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.IdentityKeyPair;
  46 import org.signal.libsignal.protocol.InvalidMessageException;
  47 import org.signal.libsignal.protocol.groups.GroupSessionBuilder;
  48 import org.signal.libsignal.protocol.message.DecryptionErrorMessage;
  49 import org.signal.libsignal.protocol.state.SignedPreKeyRecord;
  50 import org.signal.libsignal.zkgroup.InvalidInputException;
  51 import org.signal.libsignal.zkgroup.profiles.ProfileKey;
  52 import org.slf4j.Logger;
  53 import org.slf4j.LoggerFactory;
  54 import org.whispersystems.signalservice.api.InvalidMessageStructureException;
  55 import org.whispersystems.signalservice.api.crypto.SignalGroupSessionBuilder;
  56 import org.whispersystems.signalservice.api.crypto.SignalServiceCipherResult;
  57 import org.whispersystems.signalservice.api.messages.EnvelopeContentValidator;
  58 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  59 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  60 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  61 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  62 import org.whispersystems.signalservice.api.messages.SignalServiceGroupContext;
  63 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
  64 import org.whispersystems.signalservice.api.messages.SignalServiceMetadata;
  65 import org.whispersystems.signalservice.api.messages.SignalServicePniSignatureMessage;
  66 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  67 import org.whispersystems.signalservice.api.messages.SignalServiceStoryMessage;
  68 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  69 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
  70 import org.whispersystems.signalservice.api.push.ACI;
  71 import org.whispersystems.signalservice.api.push.PNI;
  72 import org.whispersystems.signalservice.api.push.ServiceId;
  73 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  74 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
  75 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
  76 import org.whispersystems.signalservice.internal.serialize.SignalServiceAddressProtobufSerializer;
  77 import org.whispersystems.signalservice.internal.serialize.SignalServiceMetadataProtobufSerializer;
  78 import org.whispersystems.signalservice.internal.serialize.protos.SignalServiceContentProto;
  79
  80 import java.util.ArrayList;
  81 import java.util.List;
  82 import java.util.Optional;
  83 import java.util.stream.Collectors;
  84
  85 public final class IncomingMessageHandler {
  86
  87     private final static Logger logger = LoggerFactory.getLogger(IncomingMessageHandler.class);
  88
  89     private final SignalAccount account;
  90     private final SignalDependencies dependencies;
  91     private final Context context;
  92
  93     public IncomingMessageHandler(final Context context) {
  94         this.account = context.getAccount();
  95         this.dependencies = context.getDependencies();
  96         this.context = context;
  97     }
  98
  99     public Pair<List<HandleAction>, Exception> handleRetryEnvelope(
 100             final SignalServiceEnvelope envelope,
 101             final ReceiveConfig receiveConfig,
 102             final Manager.ReceiveMessageHandler handler
 103     ) {
 104         final List<HandleAction> actions = new ArrayList<>();
 105         if (envelope.isPreKeySignalMessage()) {
 106             actions.add(RefreshPreKeysAction.create());
 107         }
 108
 109         SignalServiceContent content = null;
 110         if (!envelope.isReceipt()) {
 111             account.getIdentityKeyStore().setRetryingDecryption(true);
 112             try {
 113                 final var cipherResult = dependencies.getCipher()
 114                         .decrypt(envelope.getProto(), envelope.getServerDeliveredTimestamp());
 115                 content = validate(envelope.getProto(), cipherResult, envelope.getServerDeliveredTimestamp());
 116                 if (content == null) {
 117                     return new Pair<>(List.of(), null);
 118                 }
 119             } catch (ProtocolUntrustedIdentityException e) {
 120                 final var recipientId = account.getRecipientResolver().resolveRecipient(e.getSender());
 121                 final var exception = new UntrustedIdentityException(account.getRecipientAddressResolver()
 122                         .resolveRecipientAddress(recipientId)
 123                         .toApiRecipientAddress(), e.getSenderDevice());
 124                 return new Pair<>(List.of(), exception);
 125             } catch (Exception e) {
 126                 return new Pair<>(List.of(), e);
 127             } finally {
 128                 account.getIdentityKeyStore().setRetryingDecryption(false);
 129             }
 130         }
 131         actions.addAll(checkAndHandleMessage(envelope, content, receiveConfig, handler, null));
 132         return new Pair<>(actions, null);
 133     }
 134
 135     public Pair<List<HandleAction>, Exception> handleEnvelope(
 136             final SignalServiceEnvelope envelope,
 137             final ReceiveConfig receiveConfig,
 138             final Manager.ReceiveMessageHandler handler
 139     ) {
 140         final var actions = new ArrayList<HandleAction>();
 141         if (envelope.hasSourceUuid()) {
 142             // Store uuid if we don't have it already
 143             // address/uuid in envelope is sent by server
 144             account.getRecipientTrustedResolver().resolveRecipientTrusted(envelope.getSourceAddress());
 145         }
 146         SignalServiceContent content = null;
 147         Exception exception = null;
 148         if (!envelope.isReceipt()) {
 149             try {
 150                 final var cipherResult = dependencies.getCipher()
 151                         .decrypt(envelope.getProto(), envelope.getServerDeliveredTimestamp());
 152                 content = validate(envelope.getProto(), cipherResult, envelope.getServerDeliveredTimestamp());
 153                 if (content == null) {
 154                     return new Pair<>(List.of(), null);
 155                 }
 156             } catch (ProtocolUntrustedIdentityException e) {
 157                 final var recipientId = account.getRecipientResolver().resolveRecipient(e.getSender());
 158                 actions.add(new RetrieveProfileAction(recipientId));
 159                 exception = new UntrustedIdentityException(account.getRecipientAddressResolver()
 160                         .resolveRecipientAddress(recipientId)
 161                         .toApiRecipientAddress(), e.getSenderDevice());
 162             } catch (ProtocolInvalidKeyIdException | ProtocolInvalidKeyException | ProtocolNoSessionException |
 163                      ProtocolInvalidMessageException e) {
 164                 logger.debug("Failed to decrypt incoming message", e);
 165                 final var sender = account.getRecipientResolver().resolveRecipient(e.getSender());
 166                 if (context.getContactHelper().isContactBlocked(sender)) {
 167                     logger.debug("Received invalid message from blocked contact, ignoring.");
 168                 } else {
 169                     final var senderProfile = context.getProfileHelper().getRecipientProfile(sender);
 170                     final var selfProfile = context.getProfileHelper().getSelfProfile();
 171                     var serviceId = ServiceId.parseOrNull(e.getSender());
 172                     if (serviceId == null) {
 173                         // Workaround for libsignal-client issue #492
 174                         serviceId = account.getRecipientAddressResolver()
 175                                 .resolveRecipientAddress(sender)
 176                                 .serviceId()
 177                                 .orElse(null);
 178                     }
 179                     if (serviceId != null) {
 180                         final var isSelf = sender.equals(account.getSelfRecipientId())
 181                                 && e.getSenderDevice() == account.getDeviceId();
 182                         final var isSenderSenderKeyCapable = senderProfile != null && senderProfile.getCapabilities()
 183                                 .contains(Profile.Capability.senderKey);
 184                         final var isSelfSenderKeyCapable = selfProfile != null && selfProfile.getCapabilities()
 185                                 .contains(Profile.Capability.senderKey);
 186                         if (!isSelf && isSenderSenderKeyCapable && isSelfSenderKeyCapable) {
 187                             logger.debug("Received invalid message, requesting message resend.");
 188                             actions.add(new SendRetryMessageRequestAction(sender, serviceId, e, envelope));
 189                         } else {
 190                             logger.debug("Received invalid message, queuing renew session action.");
 191                             actions.add(new RenewSessionAction(sender, serviceId));
 192                         }
 193                     } else {
 194                         logger.debug("Received invalid message from invalid sender: {}", e.getSender());
 195                     }
 196                 }
 197                 exception = e;
 198             } catch (SelfSendException e) {
 199                 logger.debug("Dropping unidentified message from self.");
 200                 return new Pair<>(List.of(), null);
 201             } catch (Exception e) {
 202                 logger.debug("Failed to handle incoming message", e);
 203                 exception = e;
 204             }
 205         }
 206
 207         actions.addAll(checkAndHandleMessage(envelope, content, receiveConfig, handler, exception));
 208         return new Pair<>(actions, exception);
 209     }
 210
 211     private SignalServiceContent validate(
 212             SignalServiceProtos.Envelope envelope, SignalServiceCipherResult cipherResult, long serverDeliveredTimestamp
 213     ) throws ProtocolInvalidKeyException, ProtocolInvalidMessageException, UnsupportedDataMessageException, InvalidMessageStructureException {
 214         final var content = cipherResult.getContent();
 215         final var envelopeMetadata = cipherResult.getMetadata();
 216         final var validationResult = EnvelopeContentValidator.INSTANCE.validate(envelope, content);
 217
 218         if (validationResult instanceof EnvelopeContentValidator.Result.Invalid v) {
 219             logger.warn("Invalid content! {}", v.getReason(), v.getThrowable());
 220             return null;
 221         }
 222
 223         if (validationResult instanceof EnvelopeContentValidator.Result.UnsupportedDataMessage v) {
 224             logger.warn("Unsupported DataMessage! Our version: {}, their version: {}",
 225                     v.getOurVersion(),
 226                     v.getTheirVersion());
 227             return null;
 228         }
 229
 230         final var localAddress = new SignalServiceAddress(envelopeMetadata.getDestinationServiceId(),
 231                 Optional.ofNullable(account.getNumber()));
 232         final var metadata = new SignalServiceMetadata(new SignalServiceAddress(envelopeMetadata.getSourceServiceId(),
 233                 Optional.ofNullable(envelopeMetadata.getSourceE164())),
 234                 envelopeMetadata.getSourceDeviceId(),
 235                 envelope.getTimestamp(),
 236                 envelope.getServerTimestamp(),
 237                 serverDeliveredTimestamp,
 238                 envelopeMetadata.getSealedSender(),
 239                 envelope.getServerGuid(),
 240                 Optional.ofNullable(envelopeMetadata.getGroupId()),
 241                 envelopeMetadata.getDestinationServiceId().toString());
 242
 243         final var contentProto = SignalServiceContentProto.newBuilder()
 244                 .setLocalAddress(SignalServiceAddressProtobufSerializer.toProtobuf(localAddress))
 245                 .setMetadata(SignalServiceMetadataProtobufSerializer.toProtobuf(metadata))
 246                 .setContent(content)
 247                 .build();
 248
 249         return SignalServiceContent.createFromProto(contentProto);
 250     }
 251
 252     private List<HandleAction> checkAndHandleMessage(
 253             final SignalServiceEnvelope envelope,
 254             final SignalServiceContent content,
 255             final ReceiveConfig receiveConfig,
 256             final Manager.ReceiveMessageHandler handler,
 257             final Exception exception
 258     ) {
 259         if (content != null) {
 260             // Store uuid if we don't have it already
 261             // address/uuid is validated by unidentified sender certificate
 262
 263             boolean handledPniSignature = false;
 264             if (content.getPniSignatureMessage().isPresent()) {
 265                 final var message = content.getPniSignatureMessage().get();
 266                 final var senderAddress = getSenderAddress(envelope, content);
 267                 if (senderAddress != null) {
 268                     handledPniSignature = handlePniSignatureMessage(message, senderAddress);
 269                 }
 270             }
 271             if (!handledPniSignature) {
 272                 account.getRecipientTrustedResolver().resolveRecipientTrusted(content.getSender());
 273             }
 274         }
 275         if (envelope.isReceipt()) {
 276             final var senderDeviceAddress = getSender(envelope, content);
 277             final var sender = senderDeviceAddress.serviceId();
 278             final var senderDeviceId = senderDeviceAddress.deviceId();
 279             account.getMessageSendLogStore().deleteEntryForRecipient(envelope.getTimestamp(), sender, senderDeviceId);
 280         }
 281
 282         var notAllowedToSendToGroup = isNotAllowedToSendToGroup(envelope, content);
 283         final var groupContext = getGroupContext(content);
 284         if (groupContext != null && groupContext.getGroupV2().isPresent()) {
 285             handleGroupV2Context(groupContext.getGroupV2().get());
 286         }
 287         // Check again in case the user just joined the group
 288         notAllowedToSendToGroup = notAllowedToSendToGroup && isNotAllowedToSendToGroup(envelope, content);
 289
 290         if (isMessageBlocked(envelope, content)) {
 291             logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
 292             return List.of();
 293         } else if (notAllowedToSendToGroup) {
 294             final var senderAddress = getSenderAddress(envelope, content);
 295             logger.info("Ignoring a group message from an unauthorized sender (no member or admin): {} {}",
 296                     senderAddress == null ? null : senderAddress.getIdentifier(),
 297                     envelope.getTimestamp());
 298             return List.of();
 299         } else {
 300             List<HandleAction> actions;
 301             if (content != null) {
 302                 actions = handleMessage(envelope, content, receiveConfig);
 303             } else {
 304                 actions = List.of();
 305             }
 306             handler.handleMessage(MessageEnvelope.from(envelope,
 307                     content,
 308                     account.getRecipientResolver(),
 309                     account.getRecipientAddressResolver(),
 310                     context.getAttachmentHelper()::getAttachmentFile,
 311                     exception), exception);
 312             return actions;
 313         }
 314     }
 315
 316     public List<HandleAction> handleMessage(
 317             SignalServiceEnvelope envelope, SignalServiceContent content, ReceiveConfig receiveConfig
 318     ) {
 319         var actions = new ArrayList<HandleAction>();
 320         final var senderDeviceAddress = getSender(envelope, content);
 321         final var sender = senderDeviceAddress.recipientId();
 322         final var senderServiceId = senderDeviceAddress.serviceId();
 323         final var senderDeviceId = senderDeviceAddress.deviceId();
 324         final var destination = getDestination(envelope);
 325
 326         if (content.getReceiptMessage().isPresent()) {
 327             final var message = content.getReceiptMessage().get();
 328             if (message.isDeliveryReceipt()) {
 329                 account.getMessageSendLogStore()
 330                         .deleteEntriesForRecipient(message.getTimestamps(), senderServiceId, senderDeviceId);
 331             }
 332         }
 333
 334         if (content.getSenderKeyDistributionMessage().isPresent()) {
 335             final var message = content.getSenderKeyDistributionMessage().get();
 336             final var protocolAddress = senderServiceId.toProtocolAddress(senderDeviceId);
 337             logger.debug("Received a sender key distribution message for distributionId {} from {}",
 338                     message.getDistributionId(),
 339                     protocolAddress);
 340             new SignalGroupSessionBuilder(dependencies.getSessionLock(),
 341                     new GroupSessionBuilder(account.getSenderKeyStore())).process(protocolAddress, message);
 342         }
 343
 344         if (content.getDecryptionErrorMessage().isPresent()) {
 345             var message = content.getDecryptionErrorMessage().get();
 346             logger.debug("Received a decryption error message from {}.{} (resend request for {})",
 347                     sender,
 348                     senderDeviceId,
 349                     message.getTimestamp());
 350             if (message.getDeviceId() == account.getDeviceId()) {
 351                 handleDecryptionErrorMessage(actions, sender, senderServiceId, senderDeviceId, message);
 352             } else {
 353                 logger.debug("Request is for another one of our devices");
 354             }
 355         }
 356
 357         if (content.getDataMessage().isPresent()) {
 358             var message = content.getDataMessage().get();
 359
 360             if (content.isNeedsReceipt()) {
 361                 actions.add(new SendReceiptAction(sender,
 362                         SignalServiceReceiptMessage.Type.DELIVERY,
 363                         message.getTimestamp()));
 364             } else {
 365                 // Message wasn't sent as unidentified sender message
 366                 final var contact = context.getAccount().getContactStore().getContact(sender);
 367                 if (account.isPrimaryDevice()
 368                         && contact != null
 369                         && !contact.isBlocked()
 370                         && contact.isProfileSharingEnabled()) {
 371                     actions.add(UpdateAccountAttributesAction.create());
 372                     actions.add(new SendProfileKeyAction(sender));
 373                 }
 374             }
 375             if (receiveConfig.sendReadReceipts()) {
 376                 actions.add(new SendReceiptAction(sender,
 377                         SignalServiceReceiptMessage.Type.READ,
 378                         message.getTimestamp()));
 379             }
 380
 381             actions.addAll(handleSignalServiceDataMessage(message,
 382                     false,
 383                     senderDeviceAddress,
 384                     destination,
 385                     receiveConfig.ignoreAttachments()));
 386         }
 387
 388         if (content.getStoryMessage().isPresent()) {
 389             final var message = content.getStoryMessage().get();
 390             actions.addAll(handleSignalServiceStoryMessage(message, sender, receiveConfig.ignoreAttachments()));
 391         }
 392
 393         if (content.getSyncMessage().isPresent()) {
 394             var syncMessage = content.getSyncMessage().get();
 395             actions.addAll(handleSyncMessage(envelope,
 396                     syncMessage,
 397                     senderDeviceAddress,
 398                     receiveConfig.ignoreAttachments()));
 399         }
 400
 401         return actions;
 402     }
 403
 404     private boolean handlePniSignatureMessage(
 405             final SignalServicePniSignatureMessage message, final SignalServiceAddress senderAddress
 406     ) {
 407         final var aci = ACI.from(senderAddress.getServiceId());
 408         final var aciIdentity = account.getIdentityKeyStore().getIdentityInfo(aci);
 409         final var pni = message.getPni();
 410         final var pniIdentity = account.getIdentityKeyStore().getIdentityInfo(pni);
 411
 412         if (aciIdentity == null || pniIdentity == null || aci.equals(pni)) {
 413             return false;
 414         }
 415
 416         final var verified = pniIdentity.getIdentityKey()
 417                 .verifyAlternateIdentity(aciIdentity.getIdentityKey(), message.getSignature());
 418
 419         if (!verified) {
 420             logger.debug("Invalid PNI signature of ACI {} with PNI {}", aci, pni);
 421             return false;
 422         }
 423
 424         logger.debug("Verified association of ACI {} with PNI {}", aci, pni);
 425         account.getRecipientTrustedResolver()
 426                 .resolveRecipientTrusted(Optional.of(aci), Optional.of(pni), senderAddress.getNumber());
 427         return true;
 428     }
 429
 430     private void handleDecryptionErrorMessage(
 431             final List<HandleAction> actions,
 432             final RecipientId sender,
 433             final ServiceId senderServiceId,
 434             final int senderDeviceId,
 435             final DecryptionErrorMessage message
 436     ) {
 437         final var logEntries = account.getMessageSendLogStore()
 438                 .findMessages(senderServiceId,
 439                         senderDeviceId,
 440                         message.getTimestamp(),
 441                         message.getRatchetKey().isEmpty());
 442
 443         for (final var logEntry : logEntries) {
 444             actions.add(new ResendMessageAction(sender, message.getTimestamp(), logEntry));
 445         }
 446
 447         if (message.getRatchetKey().isPresent()) {
 448             if (account.getAciSessionStore()
 449                     .isCurrentRatchetKey(senderServiceId, senderDeviceId, message.getRatchetKey().get())) {
 450                 if (logEntries.isEmpty()) {
 451                     logger.debug("Renewing the session with sender");
 452                     actions.add(new RenewSessionAction(sender, senderServiceId));
 453                 } else {
 454                     logger.trace("Archiving the session with sender, a resend message has already been queued");
 455                     context.getAccount().getAciSessionStore().archiveSessions(senderServiceId);
 456                 }
 457             }
 458             return;
 459         }
 460
 461         var found = false;
 462         for (final var logEntry : logEntries) {
 463             if (logEntry.groupId().isEmpty()) {
 464                 continue;
 465             }
 466             final var group = account.getGroupStore().getGroup(logEntry.groupId().get());
 467             if (group == null) {
 468                 continue;
 469             }
 470             found = true;
 471             logger.trace("Deleting shared sender key with {} ({}): {}",
 472                     sender,
 473                     senderDeviceId,
 474                     group.getDistributionId());
 475             account.getSenderKeyStore().deleteSharedWith(senderServiceId, senderDeviceId, group.getDistributionId());
 476         }
 477         if (!found) {
 478             logger.debug("Reset all shared sender keys with this recipient, no related message found in send log");
 479             account.getSenderKeyStore().deleteSharedWith(senderServiceId);
 480         }
 481     }
 482
 483     private List<HandleAction> handleSyncMessage(
 484             final SignalServiceEnvelope envelope,
 485             final SignalServiceSyncMessage syncMessage,
 486             final DeviceAddress sender,
 487             final boolean ignoreAttachments
 488     ) {
 489         var actions = new ArrayList<HandleAction>();
 490         account.setMultiDevice(true);
 491         if (syncMessage.getSent().isPresent()) {
 492             var message = syncMessage.getSent().get();
 493             final var destination = message.getDestination().orElse(null);
 494             if (message.getDataMessage().isPresent()) {
 495                 actions.addAll(handleSignalServiceDataMessage(message.getDataMessage().get(),
 496                         true,
 497                         sender,
 498                         destination == null
 499                                 ? null
 500                                 : new DeviceAddress(context.getRecipientHelper().resolveRecipient(destination),
 501                                         destination.getServiceId(),
 502                                         0),
 503                         ignoreAttachments));
 504             }
 505             if (message.getStoryMessage().isPresent()) {
 506                 actions.addAll(handleSignalServiceStoryMessage(message.getStoryMessage().get(),
 507                         sender.recipientId(),
 508                         ignoreAttachments));
 509             }
 510         }
 511         if (syncMessage.getRequest().isPresent() && account.isPrimaryDevice()) {
 512             var rm = syncMessage.getRequest().get();
 513             if (rm.isContactsRequest()) {
 514                 actions.add(SendSyncContactsAction.create());
 515             }
 516             if (rm.isGroupsRequest()) {
 517                 actions.add(SendSyncGroupsAction.create());
 518             }
 519             if (rm.isBlockedListRequest()) {
 520                 actions.add(SendSyncBlockedListAction.create());
 521             }
 522             if (rm.isKeysRequest()) {
 523                 actions.add(SendSyncKeysAction.create());
 524             }
 525             if (rm.isConfigurationRequest()) {
 526                 actions.add(SendSyncConfigurationAction.create());
 527             }
 528             if (rm.isPniIdentityRequest()) {
 529                 actions.add(SendPniIdentityKeyAction.create());
 530             }
 531         }
 532         if (syncMessage.getGroups().isPresent()) {
 533             try {
 534                 final var groupsMessage = syncMessage.getGroups().get();
 535                 context.getAttachmentHelper()
 536                         .retrieveAttachment(groupsMessage, context.getSyncHelper()::handleSyncDeviceGroups);
 537             } catch (Exception e) {
 538                 logger.warn("Failed to handle received sync groups, ignoring: {}", e.getMessage());
 539             }
 540         }
 541         if (syncMessage.getBlockedList().isPresent()) {
 542             final var blockedListMessage = syncMessage.getBlockedList().get();
 543             for (var address : blockedListMessage.getAddresses()) {
 544                 context.getContactHelper()
 545                         .setContactBlocked(context.getRecipientHelper().resolveRecipient(address), true);
 546             }
 547             for (var groupId : blockedListMessage.getGroupIds()
 548                     .stream()
 549                     .map(GroupId::unknownVersion)
 550                     .collect(Collectors.toSet())) {
 551                 try {
 552                     context.getGroupHelper().setGroupBlocked(groupId, true);
 553                 } catch (GroupNotFoundException e) {
 554                     logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
 555                             groupId.toBase64());
 556                 }
 557             }
 558         }
 559         if (syncMessage.getContacts().isPresent()) {
 560             try {
 561                 final var contactsMessage = syncMessage.getContacts().get();
 562                 context.getAttachmentHelper()
 563                         .retrieveAttachment(contactsMessage.getContactsStream(),
 564                                 context.getSyncHelper()::handleSyncDeviceContacts);
 565             } catch (Exception e) {
 566                 logger.warn("Failed to handle received sync contacts, ignoring: {}", e.getMessage());
 567             }
 568         }
 569         if (syncMessage.getVerified().isPresent()) {
 570             final var verifiedMessage = syncMessage.getVerified().get();
 571             account.getIdentityKeyStore()
 572                     .setIdentityTrustLevel(verifiedMessage.getDestination().getServiceId(),
 573                             verifiedMessage.getIdentityKey(),
 574                             TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
 575         }
 576         if (syncMessage.getStickerPackOperations().isPresent()) {
 577             final var stickerPackOperationMessages = syncMessage.getStickerPackOperations().get();
 578             for (var m : stickerPackOperationMessages) {
 579                 if (m.getPackId().isEmpty()) {
 580                     continue;
 581                 }
 582                 final var stickerPackId = StickerPackId.deserialize(m.getPackId().get());
 583                 final var installed = m.getType().isEmpty()
 584                         || m.getType().get() == StickerPackOperationMessage.Type.INSTALL;
 585
 586                 var sticker = account.getStickerStore().getStickerPack(stickerPackId);
 587                 if (m.getPackKey().isPresent()) {
 588                     if (sticker == null) {
 589                         sticker = new StickerPack(-1, stickerPackId, m.getPackKey().get(), installed);
 590                         account.getStickerStore().addStickerPack(sticker);
 591                     }
 592                     if (installed) {
 593                         context.getJobExecutor()
 594                                 .enqueueJob(new RetrieveStickerPackJob(stickerPackId, m.getPackKey().get()));
 595                     }
 596                 }
 597
 598                 if (sticker != null && sticker.isInstalled() != installed) {
 599                     account.getStickerStore().updateStickerPackInstalled(sticker.packId(), installed);
 600                 }
 601             }
 602         }
 603         if (syncMessage.getFetchType().isPresent()) {
 604             switch (syncMessage.getFetchType().get()) {
 605                 case LOCAL_PROFILE -> actions.add(new RetrieveProfileAction(account.getSelfRecipientId()));
 606                 case STORAGE_MANIFEST -> actions.add(RetrieveStorageDataAction.create());
 607             }
 608         }
 609         if (syncMessage.getKeys().isPresent()) {
 610             final var keysMessage = syncMessage.getKeys().get();
 611             if (keysMessage.getStorageService().isPresent()) {
 612                 final var storageKey = keysMessage.getStorageService().get();
 613                 account.setStorageKey(storageKey);
 614                 actions.add(RetrieveStorageDataAction.create());
 615             }
 616         }
 617         if (syncMessage.getConfiguration().isPresent()) {
 618             final var configurationMessage = syncMessage.getConfiguration().get();
 619             final var configurationStore = account.getConfigurationStore();
 620             if (configurationMessage.getReadReceipts().isPresent()) {
 621                 configurationStore.setReadReceipts(configurationMessage.getReadReceipts().get());
 622             }
 623             if (configurationMessage.getLinkPreviews().isPresent()) {
 624                 configurationStore.setLinkPreviews(configurationMessage.getLinkPreviews().get());
 625             }
 626             if (configurationMessage.getTypingIndicators().isPresent()) {
 627                 configurationStore.setTypingIndicators(configurationMessage.getTypingIndicators().get());
 628             }
 629             if (configurationMessage.getUnidentifiedDeliveryIndicators().isPresent()) {
 630                 configurationStore.setUnidentifiedDeliveryIndicators(configurationMessage.getUnidentifiedDeliveryIndicators()
 631                         .get());
 632             }
 633         }
 634         if (syncMessage.getPniIdentity().isPresent()) {
 635             final var pniIdentity = syncMessage.getPniIdentity().get();
 636             account.setPniIdentityKeyPair(KeyUtils.getIdentityKeyPair(pniIdentity.getPublicKey().toByteArray(),
 637                     pniIdentity.getPrivateKey().toByteArray()));
 638             actions.add(RefreshPreKeysAction.create());
 639         }
 640         if (syncMessage.getPniChangeNumber().isPresent()) {
 641             final var pniChangeNumber = syncMessage.getPniChangeNumber().get();
 642             logger.debug("Received PNI change number sync message, applying.");
 643             if (pniChangeNumber.hasIdentityKeyPair()
 644                     && pniChangeNumber.hasRegistrationId()
 645                     && pniChangeNumber.hasSignedPreKey()
 646                     && !envelope.getUpdatedPni().isEmpty()) {
 647                 logger.debug("New PNI: {}", envelope.getUpdatedPni());
 648                 try {
 649                     final var updatedPni = PNI.parseOrThrow(envelope.getUpdatedPni());
 650                     context.getAccountHelper()
 651                             .setPni(updatedPni,
 652                                     new IdentityKeyPair(pniChangeNumber.getIdentityKeyPair().toByteArray()),
 653                                     new SignedPreKeyRecord(pniChangeNumber.getSignedPreKey().toByteArray()),
 654                                     pniChangeNumber.getRegistrationId());
 655                 } catch (Exception e) {
 656                     logger.warn("Failed to handle change number message", e);
 657                 }
 658             }
 659         }
 660         return actions;
 661     }
 662
 663     private SignalServiceGroupContext getGroupContext(SignalServiceContent content) {
 664         if (content == null) {
 665             return null;
 666         }
 667
 668         if (content.getDataMessage().isPresent()) {
 669             var message = content.getDataMessage().get();
 670             if (message.getGroupContext().isPresent()) {
 671                 return message.getGroupContext().get();
 672             }
 673         }
 674
 675         if (content.getStoryMessage().isPresent()) {
 676             var message = content.getStoryMessage().get();
 677             if (message.getGroupContext().isPresent()) {
 678                 try {
 679                     return SignalServiceGroupContext.create(null, message.getGroupContext().get());
 680                 } catch (InvalidMessageException e) {
 681                     throw new AssertionError(e);
 682                 }
 683             }
 684         }
 685
 686         return null;
 687     }
 688
 689     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
 690         SignalServiceAddress source = getSenderAddress(envelope, content);
 691         if (source == null) {
 692             return false;
 693         }
 694         final var recipientId = context.getRecipientHelper().resolveRecipient(source);
 695         if (context.getContactHelper().isContactBlocked(recipientId)) {
 696             return true;
 697         }
 698
 699         final var groupContext = getGroupContext(content);
 700         if (groupContext != null) {
 701             var groupId = GroupUtils.getGroupId(groupContext);
 702             return context.getGroupHelper().isGroupBlocked(groupId);
 703         }
 704
 705         return false;
 706     }
 707
 708     private boolean isNotAllowedToSendToGroup(SignalServiceEnvelope envelope, SignalServiceContent content) {
 709         SignalServiceAddress source = getSenderAddress(envelope, content);
 710         if (source == null) {
 711             return false;
 712         }
 713
 714         final var groupContext = getGroupContext(content);
 715         if (groupContext == null) {
 716             return false;
 717         }
 718
 719         if (groupContext.getGroupV1().isPresent()) {
 720             var groupInfo = groupContext.getGroupV1().get();
 721             if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
 722                 return false;
 723             }
 724         }
 725
 726         var groupId = GroupUtils.getGroupId(groupContext);
 727         var group = context.getGroupHelper().getGroup(groupId);
 728         if (group == null) {
 729             return false;
 730         }
 731
 732         final var message = content.getDataMessage().orElse(null);
 733
 734         final var recipientId = context.getRecipientHelper().resolveRecipient(source);
 735         if (!group.isMember(recipientId) && !(
 736                 group.isPendingMember(recipientId) && message != null && message.isGroupV2Update()
 737         )) {
 738             return true;
 739         }
 740
 741         if (group.isAnnouncementGroup() && !group.isAdmin(recipientId)) {
 742             return message == null
 743                     || message.getBody().isPresent()
 744                     || message.getAttachments().isPresent()
 745                     || message.getQuote().isPresent()
 746                     || message.getPreviews().isPresent()
 747                     || message.getMentions().isPresent()
 748                     || message.getSticker().isPresent();
 749         }
 750         return false;
 751     }
 752
 753     private List<HandleAction> handleSignalServiceDataMessage(
 754             SignalServiceDataMessage message,
 755             boolean isSync,
 756             DeviceAddress source,
 757             DeviceAddress destination,
 758             boolean ignoreAttachments
 759     ) {
 760         var actions = new ArrayList<HandleAction>();
 761         if (message.getGroupContext().isPresent()) {
 762             final var groupContext = message.getGroupContext().get();
 763             if (groupContext.getGroupV1().isPresent()) {
 764                 var groupInfo = groupContext.getGroupV1().get();
 765                 var groupId = GroupId.v1(groupInfo.getGroupId());
 766                 var group = context.getGroupHelper().getGroup(groupId);
 767                 if (group == null || group instanceof GroupInfoV1) {
 768                     var groupV1 = (GroupInfoV1) group;
 769                     switch (groupInfo.getType()) {
 770                         case UPDATE -> {
 771                             if (groupV1 == null) {
 772                                 groupV1 = new GroupInfoV1(groupId);
 773                             }
 774
 775                             if (groupInfo.getAvatar().isPresent()) {
 776                                 var avatar = groupInfo.getAvatar().get();
 777                                 context.getGroupHelper().downloadGroupAvatar(groupV1.getGroupId(), avatar);
 778                             }
 779
 780                             if (groupInfo.getName().isPresent()) {
 781                                 groupV1.name = groupInfo.getName().get();
 782                             }
 783
 784                             if (groupInfo.getMembers().isPresent()) {
 785                                 groupV1.addMembers(groupInfo.getMembers()
 786                                         .get()
 787                                         .stream()
 788                                         .map(context.getRecipientHelper()::resolveRecipient)
 789                                         .collect(Collectors.toSet()));
 790                             }
 791
 792                             account.getGroupStore().updateGroup(groupV1);
 793                         }
 794                         case DELIVER -> {
 795                             if (groupV1 == null && !isSync) {
 796                                 actions.add(new SendGroupInfoRequestAction(source.recipientId(), groupId));
 797                             }
 798                         }
 799                         case QUIT -> {
 800                             if (groupV1 != null) {
 801                                 groupV1.removeMember(source.recipientId());
 802                                 account.getGroupStore().updateGroup(groupV1);
 803                             }
 804                         }
 805                         case REQUEST_INFO -> {
 806                             if (groupV1 != null && !isSync) {
 807                                 actions.add(new SendGroupInfoAction(source.recipientId(), groupV1.getGroupId()));
 808                             }
 809                         }
 810                     }
 811                 } else {
 812                     // Received a group v1 message for a v2 group
 813                 }
 814             }
 815             if (groupContext.getGroupV2().isPresent()) {
 816                 handleGroupV2Context(groupContext.getGroupV2().get());
 817             }
 818         }
 819
 820         final var conversationPartnerAddress = isSync ? destination : source;
 821         if (conversationPartnerAddress != null && message.isEndSession()) {
 822             account.getAciSessionStore().deleteAllSessions(conversationPartnerAddress.serviceId());
 823         }
 824         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
 825             if (message.getGroupContext().isPresent()) {
 826                 final var groupContext = message.getGroupContext().get();
 827                 if (groupContext.getGroupV1().isPresent()) {
 828                     var groupInfo = groupContext.getGroupV1().get();
 829                     var group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
 830                     if (group != null) {
 831                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
 832                             group.messageExpirationTime = message.getExpiresInSeconds();
 833                             account.getGroupStore().updateGroup(group);
 834                         }
 835                     }
 836                 } else if (groupContext.getGroupV2().isPresent()) {
 837                     // disappearing message timer already stored in the DecryptedGroup
 838                 }
 839             } else if (conversationPartnerAddress != null) {
 840                 context.getContactHelper()
 841                         .setExpirationTimer(conversationPartnerAddress.recipientId(), message.getExpiresInSeconds());
 842             }
 843         }
 844         if (!ignoreAttachments) {
 845             if (message.getAttachments().isPresent()) {
 846                 for (var attachment : message.getAttachments().get()) {
 847                     context.getAttachmentHelper().downloadAttachment(attachment);
 848                 }
 849             }
 850             if (message.getSharedContacts().isPresent()) {
 851                 for (var contact : message.getSharedContacts().get()) {
 852                     if (contact.getAvatar().isPresent()) {
 853                         context.getAttachmentHelper().downloadAttachment(contact.getAvatar().get().getAttachment());
 854                     }
 855                 }
 856             }
 857             if (message.getPreviews().isPresent()) {
 858                 final var previews = message.getPreviews().get();
 859                 for (var preview : previews) {
 860                     if (preview.getImage().isPresent()) {
 861                         context.getAttachmentHelper().downloadAttachment(preview.getImage().get());
 862                     }
 863                 }
 864             }
 865             if (message.getQuote().isPresent()) {
 866                 final var quote = message.getQuote().get();
 867
 868                 for (var quotedAttachment : quote.getAttachments()) {
 869                     final var thumbnail = quotedAttachment.getThumbnail();
 870                     if (thumbnail != null) {
 871                         context.getAttachmentHelper().downloadAttachment(thumbnail);
 872                     }
 873                 }
 874             }
 875         }
 876         if (message.getGiftBadge().isPresent()) {
 877             handleIncomingGiftBadge(message.getGiftBadge().get());
 878         }
 879         if (message.getProfileKey().isPresent()) {
 880             handleIncomingProfileKey(message.getProfileKey().get(), source.recipientId());
 881         }
 882         if (message.getSticker().isPresent()) {
 883             final var messageSticker = message.getSticker().get();
 884             final var stickerPackId = StickerPackId.deserialize(messageSticker.getPackId());
 885             var sticker = account.getStickerStore().getStickerPack(stickerPackId);
 886             if (sticker == null) {
 887                 sticker = new StickerPack(stickerPackId, messageSticker.getPackKey());
 888                 account.getStickerStore().addStickerPack(sticker);
 889             }
 890             context.getJobExecutor().enqueueJob(new RetrieveStickerPackJob(stickerPackId, messageSticker.getPackKey()));
 891         }
 892         return actions;
 893     }
 894
 895     private void handleIncomingGiftBadge(final SignalServiceDataMessage.GiftBadge giftBadge) {
 896         // TODO
 897     }
 898
 899     private List<HandleAction> handleSignalServiceStoryMessage(
 900             SignalServiceStoryMessage message, RecipientId source, boolean ignoreAttachments
 901     ) {
 902         var actions = new ArrayList<HandleAction>();
 903         if (message.getGroupContext().isPresent()) {
 904             handleGroupV2Context(message.getGroupContext().get());
 905         }
 906
 907         if (!ignoreAttachments) {
 908             if (message.getFileAttachment().isPresent()) {
 909                 context.getAttachmentHelper().downloadAttachment(message.getFileAttachment().get());
 910             }
 911             if (message.getTextAttachment().isPresent()) {
 912                 final var textAttachment = message.getTextAttachment().get();
 913                 if (textAttachment.getPreview().isPresent()) {
 914                     final var preview = textAttachment.getPreview().get();
 915                     if (preview.getImage().isPresent()) {
 916                         context.getAttachmentHelper().downloadAttachment(preview.getImage().get());
 917                     }
 918                 }
 919             }
 920         }
 921
 922         if (message.getProfileKey().isPresent()) {
 923             handleIncomingProfileKey(message.getProfileKey().get(), source);
 924         }
 925
 926         return actions;
 927     }
 928
 929     private void handleGroupV2Context(final SignalServiceGroupV2 groupContext) {
 930         final var groupMasterKey = groupContext.getMasterKey();
 931
 932         context.getGroupHelper()
 933                 .getOrMigrateGroup(groupMasterKey,
 934                         groupContext.getRevision(),
 935                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
 936     }
 937
 938     private void handleIncomingProfileKey(final byte[] profileKeyBytes, final RecipientId source) {
 939         if (profileKeyBytes.length != 32) {
 940             logger.debug("Received invalid profile key of length {}", profileKeyBytes.length);
 941             return;
 942         }
 943         final ProfileKey profileKey;
 944         try {
 945             profileKey = new ProfileKey(profileKeyBytes);
 946         } catch (InvalidInputException e) {
 947             throw new AssertionError(e);
 948         }
 949         if (account.getSelfRecipientId().equals(source)) {
 950             this.account.setProfileKey(profileKey);
 951         }
 952         this.account.getProfileStore().storeProfileKey(source, profileKey);
 953     }
 954
 955     private SignalServiceAddress getSenderAddress(SignalServiceEnvelope envelope, SignalServiceContent content) {
 956         if (!envelope.isUnidentifiedSender() && envelope.hasSourceUuid()) {
 957             return envelope.getSourceAddress();
 958         } else if (content != null) {
 959             return content.getSender();
 960         } else {
 961             return null;
 962         }
 963     }
 964
 965     private DeviceAddress getSender(SignalServiceEnvelope envelope, SignalServiceContent content) {
 966         if (!envelope.isUnidentifiedSender() && envelope.hasSourceUuid()) {
 967             return new DeviceAddress(context.getRecipientHelper().resolveRecipient(envelope.getSourceAddress()),
 968                     envelope.getSourceAddress().getServiceId(),
 969                     envelope.getSourceDevice());
 970         } else {
 971             return new DeviceAddress(context.getRecipientHelper().resolveRecipient(content.getSender()),
 972                     content.getSender().getServiceId(),
 973                     content.getSenderDevice());
 974         }
 975     }
 976
 977     private DeviceAddress getDestination(SignalServiceEnvelope envelope) {
 978         if (!envelope.hasDestinationUuid()) {
 979             return new DeviceAddress(account.getSelfRecipientId(), account.getAci(), account.getDeviceId());
 980         }
 981         final var addressOptional = SignalServiceAddress.fromRaw(envelope.getDestinationUuid(), null);
 982         if (addressOptional.isEmpty()) {
 983             return new DeviceAddress(account.getSelfRecipientId(), account.getAci(), account.getDeviceId());
 984         }
 985         final var address = addressOptional.get();
 986         return new DeviceAddress(context.getRecipientHelper().resolveRecipient(address), address.getServiceId(), 0);
 987     }
 988
 989     private record DeviceAddress(RecipientId recipientId, ServiceId serviceId, int deviceId) {}
 990 }