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

   1 package org.asamk.signal.manager.helper;
   2
   3 import com.google.protobuf.ByteString;
   4
   5 import org.asamk.signal.manager.SignalDependencies;
   6 import org.asamk.signal.manager.api.UnregisteredRecipientException;
   7 import org.asamk.signal.manager.groups.GroupId;
   8 import org.asamk.signal.manager.groups.GroupNotFoundException;
   9 import org.asamk.signal.manager.groups.GroupSendingNotAllowedException;
  10 import org.asamk.signal.manager.groups.GroupUtils;
  11 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  12 import org.asamk.signal.manager.storage.SignalAccount;
  13 import org.asamk.signal.manager.storage.groups.GroupInfo;
  14 import org.asamk.signal.manager.storage.recipients.Profile;
  15 import org.asamk.signal.manager.storage.recipients.RecipientId;
  16 import org.asamk.signal.manager.storage.sendLog.MessageSendLogEntry;
  17 import org.slf4j.Logger;
  18 import org.slf4j.LoggerFactory;
  19 import org.whispersystems.libsignal.InvalidKeyException;
  20 import org.whispersystems.libsignal.InvalidRegistrationIdException;
  21 import org.whispersystems.libsignal.NoSessionException;
  22 import org.whispersystems.libsignal.SignalProtocolAddress;
  23 import org.whispersystems.libsignal.protocol.DecryptionErrorMessage;
  24 import org.whispersystems.libsignal.util.guava.Optional;
  25 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  26 import org.whispersystems.signalservice.api.crypto.ContentHint;
  27 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  28 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  29 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  30 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  31 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  32 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  33 import org.whispersystems.signalservice.api.messages.SignalServiceTypingMessage;
  34 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  35 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  36 import org.whispersystems.signalservice.api.push.DistributionId;
  37 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  38 import org.whispersystems.signalservice.api.push.exceptions.NotFoundException;
  39 import org.whispersystems.signalservice.api.push.exceptions.ProofRequiredException;
  40 import org.whispersystems.signalservice.api.push.exceptions.RateLimitException;
  41 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  42 import org.whispersystems.signalservice.internal.push.exceptions.InvalidUnidentifiedAccessHeaderException;
  43
  44 import java.io.IOException;
  45 import java.time.Duration;
  46 import java.util.ArrayList;
  47 import java.util.HashSet;
  48 import java.util.List;
  49 import java.util.Map;
  50 import java.util.Set;
  51 import java.util.concurrent.TimeUnit;
  52 import java.util.concurrent.atomic.AtomicLong;
  53 import java.util.stream.Collectors;
  54
  55 public class SendHelper {
  56
  57     private final static Logger logger = LoggerFactory.getLogger(SendHelper.class);
  58
  59     private final SignalAccount account;
  60     private final SignalDependencies dependencies;
  61     private final Context context;
  62
  63     public SendHelper(final Context context) {
  64         this.account = context.getAccount();
  65         this.dependencies = context.getDependencies();
  66         this.context = context;
  67     }
  68
  69     /**
  70      * Send a single message to one recipient.
  71      * The message is extended with the current expiration timer.
  72      */
  73     public SendMessageResult sendMessage(
  74             final SignalServiceDataMessage.Builder messageBuilder, final RecipientId recipientId
  75     ) throws IOException {
  76         final var contact = account.getContactStore().getContact(recipientId);
  77         final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
  78         messageBuilder.withExpiration(expirationTime);
  79         messageBuilder.withProfileKey(account.getProfileKey().serialize());
  80
  81         final var message = messageBuilder.build();
  82         return sendMessage(message, recipientId);
  83     }
  84
  85     /**
  86      * Send a group message to the given group
  87      * The message is extended with the current expiration timer for the group and the group context.
  88      */
  89     public List<SendMessageResult> sendAsGroupMessage(
  90             SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
  91     ) throws IOException, GroupNotFoundException, NotAGroupMemberException, GroupSendingNotAllowedException {
  92         final var g = getGroupForSending(groupId);
  93         return sendAsGroupMessage(messageBuilder, g);
  94     }
  95
  96     /**
  97      * Send a complete group message to the given recipients (should be current/old/new members)
  98      * This method should only be used for create/update/quit group messages.
  99      */
 100     public List<SendMessageResult> sendGroupMessage(
 101             final SignalServiceDataMessage message,
 102             final Set<RecipientId> recipientIds,
 103             final DistributionId distributionId
 104     ) throws IOException {
 105         return sendGroupMessage(message, recipientIds, distributionId, ContentHint.IMPLICIT);
 106     }
 107
 108     public SendMessageResult sendDeliveryReceipt(
 109             RecipientId recipientId, List<Long> messageIds
 110     ) {
 111         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 112                 messageIds,
 113                 System.currentTimeMillis());
 114
 115         return sendReceiptMessage(receiptMessage, recipientId);
 116     }
 117
 118     public SendMessageResult sendReceiptMessage(
 119             final SignalServiceReceiptMessage receiptMessage, final RecipientId recipientId
 120     ) {
 121         final var messageSendLogStore = account.getMessageSendLogStore();
 122         final var result = handleSendMessage(recipientId,
 123                 (messageSender, address, unidentifiedAccess) -> messageSender.sendReceipt(address,
 124                         unidentifiedAccess,
 125                         receiptMessage));
 126         messageSendLogStore.insertIfPossible(receiptMessage.getWhen(), result, ContentHint.IMPLICIT);
 127         handleSendMessageResult(result);
 128         return result;
 129     }
 130
 131     public SendMessageResult sendRetryReceipt(
 132             DecryptionErrorMessage errorMessage, RecipientId recipientId, Optional<GroupId> groupId
 133     ) {
 134         logger.debug("Sending retry receipt for {} to {}, device: {}",
 135                 errorMessage.getTimestamp(),
 136                 recipientId,
 137                 errorMessage.getDeviceId());
 138         final var result = handleSendMessage(recipientId,
 139                 (messageSender, address, unidentifiedAccess) -> messageSender.sendRetryReceipt(address,
 140                         unidentifiedAccess,
 141                         groupId.transform(GroupId::serialize),
 142                         errorMessage));
 143         handleSendMessageResult(result);
 144         return result;
 145     }
 146
 147     public SendMessageResult sendNullMessage(RecipientId recipientId) {
 148         final var result = handleSendMessage(recipientId, SignalServiceMessageSender::sendNullMessage);
 149         handleSendMessageResult(result);
 150         return result;
 151     }
 152
 153     public SendMessageResult sendSelfMessage(
 154             SignalServiceDataMessage.Builder messageBuilder
 155     ) {
 156         final var recipientId = account.getSelfRecipientId();
 157         final var contact = account.getContactStore().getContact(recipientId);
 158         final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
 159         messageBuilder.withExpiration(expirationTime);
 160
 161         var message = messageBuilder.build();
 162         return sendSelfMessage(message);
 163     }
 164
 165     public SendMessageResult sendSyncMessage(SignalServiceSyncMessage message) {
 166         var messageSender = dependencies.getMessageSender();
 167         try {
 168             return messageSender.sendSyncMessage(message, context.getUnidentifiedAccessHelper().getAccessForSync());
 169         } catch (UnregisteredUserException e) {
 170             var address = context.getRecipientHelper().resolveSignalServiceAddress(account.getSelfRecipientId());
 171             return SendMessageResult.unregisteredFailure(address);
 172         } catch (ProofRequiredException e) {
 173             var address = context.getRecipientHelper().resolveSignalServiceAddress(account.getSelfRecipientId());
 174             return SendMessageResult.proofRequiredFailure(address, e);
 175         } catch (RateLimitException e) {
 176             var address = context.getRecipientHelper().resolveSignalServiceAddress(account.getSelfRecipientId());
 177             logger.warn("Sending failed due to rate limiting from the signal server: {}", e.getMessage());
 178             return SendMessageResult.networkFailure(address);
 179         } catch (org.whispersystems.signalservice.api.crypto.UntrustedIdentityException e) {
 180             var address = context.getRecipientHelper().resolveSignalServiceAddress(account.getSelfRecipientId());
 181             return SendMessageResult.identityFailure(address, e.getIdentityKey());
 182         } catch (IOException e) {
 183             var address = context.getRecipientHelper().resolveSignalServiceAddress(account.getSelfRecipientId());
 184             logger.warn("Failed to send message due to IO exception: {}", e.getMessage());
 185             return SendMessageResult.networkFailure(address);
 186         }
 187     }
 188
 189     public SendMessageResult sendTypingMessage(
 190             SignalServiceTypingMessage message, RecipientId recipientId
 191     ) {
 192         final var result = handleSendMessage(recipientId,
 193                 (messageSender, address, unidentifiedAccess) -> messageSender.sendTyping(address,
 194                         unidentifiedAccess,
 195                         message));
 196         handleSendMessageResult(result);
 197         return result;
 198     }
 199
 200     public List<SendMessageResult> sendGroupTypingMessage(
 201             SignalServiceTypingMessage message, GroupId groupId
 202     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 203         final var g = getGroupForSending(groupId);
 204         if (g.isAnnouncementGroup() && !g.isAdmin(account.getSelfRecipientId())) {
 205             throw new GroupSendingNotAllowedException(groupId, g.getTitle());
 206         }
 207         final var distributionId = g.getDistributionId();
 208         final var recipientIds = g.getMembersWithout(account.getSelfRecipientId());
 209
 210         return sendGroupTypingMessage(message, recipientIds, distributionId);
 211     }
 212
 213     public SendMessageResult resendMessage(
 214             final RecipientId recipientId, final long timestamp, final MessageSendLogEntry messageSendLogEntry
 215     ) {
 216         logger.trace("Resending message {} to {}", timestamp, recipientId);
 217         if (messageSendLogEntry.groupId().isEmpty()) {
 218             return handleSendMessage(recipientId,
 219                     (messageSender, address, unidentifiedAccess) -> messageSender.resendContent(address,
 220                             unidentifiedAccess,
 221                             timestamp,
 222                             messageSendLogEntry.content(),
 223                             messageSendLogEntry.contentHint(),
 224                             Optional.absent()));
 225         }
 226
 227         final var groupId = messageSendLogEntry.groupId().get();
 228         final var group = account.getGroupStore().getGroup(groupId);
 229
 230         if (group == null) {
 231             logger.debug("Could not find a matching group for the groupId {}! Skipping message send.",
 232                     groupId.toBase64());
 233             return null;
 234         } else if (!group.getMembers().contains(recipientId)) {
 235             logger.warn("The target user is no longer in the group {}! Skipping message send.", groupId.toBase64());
 236             return null;
 237         }
 238
 239         final var senderKeyDistributionMessage = dependencies.getMessageSender()
 240                 .getOrCreateNewGroupSession(group.getDistributionId());
 241         final var distributionBytes = ByteString.copyFrom(senderKeyDistributionMessage.serialize());
 242         final var contentToSend = messageSendLogEntry.content()
 243                 .toBuilder()
 244                 .setSenderKeyDistributionMessage(distributionBytes)
 245                 .build();
 246
 247         final var result = handleSendMessage(recipientId,
 248                 (messageSender, address, unidentifiedAccess) -> messageSender.resendContent(address,
 249                         unidentifiedAccess,
 250                         timestamp,
 251                         contentToSend,
 252                         messageSendLogEntry.contentHint(),
 253                         Optional.of(group.getGroupId().serialize())));
 254
 255         if (result.isSuccess()) {
 256             final var address = context.getRecipientHelper().resolveSignalServiceAddress(recipientId);
 257             final var addresses = result.getSuccess()
 258                     .getDevices()
 259                     .stream()
 260                     .map(device -> new SignalProtocolAddress(address.getIdentifier(), device))
 261                     .collect(Collectors.toList());
 262
 263             account.getSenderKeyStore().markSenderKeySharedWith(group.getDistributionId(), addresses);
 264         }
 265
 266         return result;
 267     }
 268
 269     private List<SendMessageResult> sendAsGroupMessage(
 270             final SignalServiceDataMessage.Builder messageBuilder, final GroupInfo g
 271     ) throws IOException, GroupSendingNotAllowedException {
 272         GroupUtils.setGroupContext(messageBuilder, g);
 273         messageBuilder.withExpiration(g.getMessageExpirationTimer());
 274
 275         final var message = messageBuilder.build();
 276         final var recipients = g.getMembersWithout(account.getSelfRecipientId());
 277
 278         if (g.isAnnouncementGroup() && !g.isAdmin(account.getSelfRecipientId())) {
 279             if (message.getBody().isPresent()
 280                     || message.getAttachments().isPresent()
 281                     || message.getQuote().isPresent()
 282                     || message.getPreviews().isPresent()
 283                     || message.getMentions().isPresent()
 284                     || message.getSticker().isPresent()) {
 285                 throw new GroupSendingNotAllowedException(g.getGroupId(), g.getTitle());
 286             }
 287         }
 288
 289         return sendGroupMessage(message, recipients, g.getDistributionId(), ContentHint.RESENDABLE);
 290     }
 291
 292     private List<SendMessageResult> sendGroupMessage(
 293             final SignalServiceDataMessage message,
 294             final Set<RecipientId> recipientIds,
 295             final DistributionId distributionId,
 296             final ContentHint contentHint
 297     ) throws IOException {
 298         final var messageSender = dependencies.getMessageSender();
 299         final var messageSendLogStore = account.getMessageSendLogStore();
 300         final AtomicLong entryId = new AtomicLong(-1);
 301
 302         final LegacySenderHandler legacySender = (recipients, unidentifiedAccess, isRecipientUpdate) -> messageSender.sendDataMessage(
 303                 recipients,
 304                 unidentifiedAccess,
 305                 isRecipientUpdate,
 306                 contentHint,
 307                 message,
 308                 SignalServiceMessageSender.LegacyGroupEvents.EMPTY,
 309                 sendResult -> {
 310                     logger.trace("Partial message send result: {}", sendResult.isSuccess());
 311                     synchronized (entryId) {
 312                         if (entryId.get() == -1) {
 313                             final var newId = messageSendLogStore.insertIfPossible(message.getTimestamp(),
 314                                     sendResult,
 315                                     contentHint);
 316                             entryId.set(newId);
 317                         } else {
 318                             messageSendLogStore.addRecipientToExistingEntryIfPossible(entryId.get(), sendResult);
 319                         }
 320                     }
 321                 },
 322                 () -> false);
 323         final SenderKeySenderHandler senderKeySender = (distId, recipients, unidentifiedAccess, isRecipientUpdate) -> {
 324             final var res = messageSender.sendGroupDataMessage(distId,
 325                     recipients,
 326                     unidentifiedAccess,
 327                     isRecipientUpdate,
 328                     contentHint,
 329                     message,
 330                     SignalServiceMessageSender.SenderKeyGroupEvents.EMPTY);
 331             synchronized (entryId) {
 332                 if (entryId.get() == -1) {
 333                     final var newId = messageSendLogStore.insertIfPossible(message.getTimestamp(), res, contentHint);
 334                     entryId.set(newId);
 335                 } else {
 336                     messageSendLogStore.addRecipientToExistingEntryIfPossible(entryId.get(), res);
 337                 }
 338             }
 339             return res;
 340         };
 341         final var results = sendGroupMessageInternal(legacySender, senderKeySender, recipientIds, distributionId);
 342
 343         for (var r : results) {
 344             handleSendMessageResult(r);
 345         }
 346
 347         return results;
 348     }
 349
 350     private List<SendMessageResult> sendGroupTypingMessage(
 351             final SignalServiceTypingMessage message,
 352             final Set<RecipientId> recipientIds,
 353             final DistributionId distributionId
 354     ) throws IOException {
 355         final var messageSender = dependencies.getMessageSender();
 356         final var results = sendGroupMessageInternal((recipients, unidentifiedAccess, isRecipientUpdate) -> messageSender.sendTyping(
 357                         recipients,
 358                         unidentifiedAccess,
 359                         message,
 360                         () -> false),
 361                 (distId, recipients, unidentifiedAccess, isRecipientUpdate) -> messageSender.sendGroupTyping(distId,
 362                         recipients,
 363                         unidentifiedAccess,
 364                         message),
 365                 recipientIds,
 366                 distributionId);
 367
 368         for (var r : results) {
 369             handleSendMessageResult(r);
 370         }
 371
 372         return results;
 373     }
 374
 375     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 376         var g = context.getGroupHelper().getGroup(groupId);
 377         if (g == null) {
 378             throw new GroupNotFoundException(groupId);
 379         }
 380         if (!g.isMember(account.getSelfRecipientId())) {
 381             throw new NotAGroupMemberException(groupId, g.getTitle());
 382         }
 383         return g;
 384     }
 385
 386     private List<SendMessageResult> sendGroupMessageInternal(
 387             final LegacySenderHandler legacySender,
 388             final SenderKeySenderHandler senderKeySender,
 389             final Set<RecipientId> recipientIds,
 390             final DistributionId distributionId
 391     ) throws IOException {
 392         long startTime = System.currentTimeMillis();
 393         // isRecipientUpdate is true if we've already sent this message to some recipients in the past, otherwise false.
 394         final var isRecipientUpdate = false;
 395         Set<RecipientId> senderKeyTargets = distributionId == null
 396                 ? Set.of()
 397                 : getSenderKeyCapableRecipientIds(recipientIds);
 398         final var allResults = new ArrayList<SendMessageResult>(recipientIds.size());
 399
 400         if (senderKeyTargets.size() > 0) {
 401             final var results = sendGroupMessageInternalWithSenderKey(senderKeySender,
 402                     senderKeyTargets,
 403                     distributionId,
 404                     isRecipientUpdate);
 405
 406             if (results == null) {
 407                 senderKeyTargets = Set.of();
 408             } else {
 409                 results.stream().filter(SendMessageResult::isSuccess).forEach(allResults::add);
 410                 final var failedTargets = results.stream()
 411                         .filter(r -> !r.isSuccess())
 412                         .map(r -> context.getRecipientHelper().resolveRecipient(r.getAddress()))
 413                         .toList();
 414                 if (failedTargets.size() > 0) {
 415                     senderKeyTargets = new HashSet<>(senderKeyTargets);
 416                     failedTargets.forEach(senderKeyTargets::remove);
 417                 }
 418             }
 419         }
 420
 421         final var legacyTargets = new HashSet<>(recipientIds);
 422         legacyTargets.removeAll(senderKeyTargets);
 423         final boolean onlyTargetIsSelfWithLinkedDevice = recipientIds.isEmpty() && account.isMultiDevice();
 424
 425         if (legacyTargets.size() > 0 || onlyTargetIsSelfWithLinkedDevice) {
 426             if (legacyTargets.size() > 0) {
 427                 logger.debug("Need to do {} legacy sends.", legacyTargets.size());
 428             } else {
 429                 logger.debug("Need to do a legacy send to send a sync message for a group of only ourselves.");
 430             }
 431
 432             final List<SendMessageResult> results = sendGroupMessageInternalWithLegacy(legacySender,
 433                     legacyTargets,
 434                     isRecipientUpdate || allResults.size() > 0);
 435             allResults.addAll(results);
 436         }
 437         final var duration = Duration.ofMillis(System.currentTimeMillis() - startTime);
 438         logger.debug("Sending took {}", duration.toString());
 439         return allResults;
 440     }
 441
 442     private Set<RecipientId> getSenderKeyCapableRecipientIds(final Set<RecipientId> recipientIds) {
 443         final var selfProfile = context.getProfileHelper().getRecipientProfile(account.getSelfRecipientId());
 444         if (selfProfile == null || !selfProfile.getCapabilities().contains(Profile.Capability.senderKey)) {
 445             logger.debug("Not all of our devices support sender key. Using legacy.");
 446             return Set.of();
 447         }
 448
 449         final var senderKeyTargets = new HashSet<RecipientId>();
 450         final var recipientList = new ArrayList<>(recipientIds);
 451         final var profiles = context.getProfileHelper().getRecipientProfile(recipientList).iterator();
 452         for (final var recipientId : recipientList) {
 453             final var profile = profiles.next();
 454             if (profile == null || !profile.getCapabilities().contains(Profile.Capability.senderKey)) {
 455                 continue;
 456             }
 457
 458             final var access = context.getUnidentifiedAccessHelper().getAccessFor(recipientId);
 459             if (!access.isPresent() || !access.get().getTargetUnidentifiedAccess().isPresent()) {
 460                 continue;
 461             }
 462
 463             final var identity = account.getIdentityKeyStore().getIdentity(recipientId);
 464             if (identity == null || !identity.getTrustLevel().isTrusted()) {
 465                 continue;
 466             }
 467
 468             senderKeyTargets.add(recipientId);
 469         }
 470
 471         if (senderKeyTargets.size() < 2) {
 472             logger.debug("Too few sender-key-capable users ({}). Doing all legacy sends.", senderKeyTargets.size());
 473             return Set.of();
 474         }
 475
 476         logger.debug("Can use sender key for {}/{} recipients.", senderKeyTargets.size(), recipientIds.size());
 477         return senderKeyTargets;
 478     }
 479
 480     private List<SendMessageResult> sendGroupMessageInternalWithLegacy(
 481             final LegacySenderHandler sender, final Set<RecipientId> recipientIds, final boolean isRecipientUpdate
 482     ) throws IOException {
 483         final var recipientIdList = new ArrayList<>(recipientIds);
 484         final var addresses = recipientIdList.stream()
 485                 .map(context.getRecipientHelper()::resolveSignalServiceAddress)
 486                 .toList();
 487         final var unidentifiedAccesses = context.getUnidentifiedAccessHelper().getAccessFor(recipientIdList);
 488         try {
 489             final var results = sender.send(addresses, unidentifiedAccesses, isRecipientUpdate);
 490
 491             final var successCount = results.stream().filter(SendMessageResult::isSuccess).count();
 492             logger.debug("Successfully sent using 1:1 to {}/{} legacy targets.", successCount, recipientIdList.size());
 493             return results;
 494         } catch (org.whispersystems.signalservice.api.crypto.UntrustedIdentityException e) {
 495             return List.of();
 496         }
 497     }
 498
 499     private List<SendMessageResult> sendGroupMessageInternalWithSenderKey(
 500             final SenderKeySenderHandler sender,
 501             final Set<RecipientId> recipientIds,
 502             final DistributionId distributionId,
 503             final boolean isRecipientUpdate
 504     ) throws IOException {
 505         final var recipientIdList = new ArrayList<>(recipientIds);
 506
 507         long keyCreateTime = account.getSenderKeyStore()
 508                 .getCreateTimeForOurKey(account.getSelfRecipientId(), account.getDeviceId(), distributionId);
 509         long keyAge = System.currentTimeMillis() - keyCreateTime;
 510
 511         if (keyCreateTime != -1 && keyAge > TimeUnit.DAYS.toMillis(14)) {
 512             logger.debug("DistributionId {} was created at {} and is {} ms old (~{} days). Rotating.",
 513                     distributionId,
 514                     keyCreateTime,
 515                     keyAge,
 516                     TimeUnit.MILLISECONDS.toDays(keyAge));
 517             account.getSenderKeyStore().deleteOurKey(account.getSelfRecipientId(), distributionId);
 518         }
 519
 520         List<SignalServiceAddress> addresses = recipientIdList.stream()
 521                 .map(context.getRecipientHelper()::resolveSignalServiceAddress)
 522                 .collect(Collectors.toList());
 523         List<UnidentifiedAccess> unidentifiedAccesses = context.getUnidentifiedAccessHelper()
 524                 .getAccessFor(recipientIdList)
 525                 .stream()
 526                 .map(Optional::get)
 527                 .map(UnidentifiedAccessPair::getTargetUnidentifiedAccess)
 528                 .map(Optional::get)
 529                 .collect(Collectors.toList());
 530
 531         try {
 532             List<SendMessageResult> results = sender.send(distributionId,
 533                     addresses,
 534                     unidentifiedAccesses,
 535                     isRecipientUpdate);
 536
 537             final var successCount = results.stream().filter(SendMessageResult::isSuccess).count();
 538             logger.debug("Successfully sent using sender key to {}/{} sender key targets.",
 539                     successCount,
 540                     addresses.size());
 541
 542             return results;
 543         } catch (org.whispersystems.signalservice.api.crypto.UntrustedIdentityException e) {
 544             return null;
 545         } catch (InvalidUnidentifiedAccessHeaderException e) {
 546             logger.warn("Someone had a bad UD header. Falling back to legacy sends.", e);
 547             return null;
 548         } catch (NoSessionException e) {
 549             logger.warn("No session. Falling back to legacy sends.", e);
 550             account.getSenderKeyStore().deleteOurKey(account.getSelfRecipientId(), distributionId);
 551             return null;
 552         } catch (InvalidKeyException e) {
 553             logger.warn("Invalid key. Falling back to legacy sends.", e);
 554             account.getSenderKeyStore().deleteOurKey(account.getSelfRecipientId(), distributionId);
 555             return null;
 556         } catch (InvalidRegistrationIdException e) {
 557             logger.warn("Invalid registrationId. Falling back to legacy sends.", e);
 558             return null;
 559         } catch (NotFoundException e) {
 560             logger.warn("Someone was unregistered. Falling back to legacy sends.", e);
 561             return null;
 562         }
 563     }
 564
 565     private SendMessageResult sendMessage(
 566             SignalServiceDataMessage message, RecipientId recipientId
 567     ) {
 568         final var messageSendLogStore = account.getMessageSendLogStore();
 569         final var result = handleSendMessage(recipientId,
 570                 (messageSender, address, unidentifiedAccess) -> messageSender.sendDataMessage(address,
 571                         unidentifiedAccess,
 572                         ContentHint.RESENDABLE,
 573                         message,
 574                         SignalServiceMessageSender.IndividualSendEvents.EMPTY));
 575         messageSendLogStore.insertIfPossible(message.getTimestamp(), result, ContentHint.RESENDABLE);
 576         handleSendMessageResult(result);
 577         return result;
 578     }
 579
 580     private SendMessageResult handleSendMessage(RecipientId recipientId, SenderHandler s) {
 581         var messageSender = dependencies.getMessageSender();
 582
 583         var address = context.getRecipientHelper().resolveSignalServiceAddress(recipientId);
 584         try {
 585             try {
 586                 return s.send(messageSender, address, context.getUnidentifiedAccessHelper().getAccessFor(recipientId));
 587             } catch (UnregisteredUserException e) {
 588                 final RecipientId newRecipientId;
 589                 try {
 590                     newRecipientId = context.getRecipientHelper().refreshRegisteredUser(recipientId);
 591                 } catch (UnregisteredRecipientException ex) {
 592                     return SendMessageResult.unregisteredFailure(address);
 593                 }
 594                 address = context.getRecipientHelper().resolveSignalServiceAddress(newRecipientId);
 595                 return s.send(messageSender,
 596                         address,
 597                         context.getUnidentifiedAccessHelper().getAccessFor(newRecipientId));
 598             }
 599         } catch (UnregisteredUserException e) {
 600             return SendMessageResult.unregisteredFailure(address);
 601         } catch (ProofRequiredException e) {
 602             return SendMessageResult.proofRequiredFailure(address, e);
 603         } catch (RateLimitException e) {
 604             logger.warn("Sending failed due to rate limiting from the signal server: {}", e.getMessage());
 605             return SendMessageResult.networkFailure(address);
 606         } catch (org.whispersystems.signalservice.api.crypto.UntrustedIdentityException e) {
 607             return SendMessageResult.identityFailure(address, e.getIdentityKey());
 608         } catch (IOException e) {
 609             logger.warn("Failed to send message due to IO exception: {}", e.getMessage());
 610             return SendMessageResult.networkFailure(address);
 611         }
 612     }
 613
 614     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) {
 615         var address = account.getSelfAddress();
 616         var transcript = new SentTranscriptMessage(Optional.of(address),
 617                 message.getTimestamp(),
 618                 message,
 619                 message.getExpiresInSeconds(),
 620                 Map.of(address, true),
 621                 false);
 622         var syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
 623
 624         return sendSyncMessage(syncMessage);
 625     }
 626
 627     private void handleSendMessageResult(final SendMessageResult r) {
 628         if (r.isSuccess() && !r.getSuccess().isUnidentified()) {
 629             final var recipientId = context.getRecipientHelper().resolveRecipient(r.getAddress());
 630             final var profile = account.getRecipientStore().getProfile(recipientId);
 631             if (profile != null && (
 632                     profile.getUnidentifiedAccessMode() == Profile.UnidentifiedAccessMode.ENABLED
 633                             || profile.getUnidentifiedAccessMode() == Profile.UnidentifiedAccessMode.UNRESTRICTED
 634             )) {
 635                 account.getRecipientStore()
 636                         .storeProfile(recipientId,
 637                                 Profile.newBuilder(profile)
 638                                         .withUnidentifiedAccessMode(Profile.UnidentifiedAccessMode.UNKNOWN)
 639                                         .build());
 640             }
 641         }
 642         if (r.isUnregisteredFailure()) {
 643             final var recipientId = context.getRecipientHelper().resolveRecipient(r.getAddress());
 644             final var profile = account.getRecipientStore().getProfile(recipientId);
 645             if (profile != null && (
 646                     profile.getUnidentifiedAccessMode() == Profile.UnidentifiedAccessMode.ENABLED
 647                             || profile.getUnidentifiedAccessMode() == Profile.UnidentifiedAccessMode.UNRESTRICTED
 648             )) {
 649                 account.getRecipientStore()
 650                         .storeProfile(recipientId,
 651                                 Profile.newBuilder(profile)
 652                                         .withUnidentifiedAccessMode(Profile.UnidentifiedAccessMode.UNKNOWN)
 653                                         .build());
 654             }
 655         }
 656         if (r.getIdentityFailure() != null) {
 657             final var recipientId = context.getRecipientHelper().resolveRecipient(r.getAddress());
 658             context.getIdentityHelper().handleIdentityFailure(recipientId, r.getIdentityFailure());
 659         }
 660     }
 661
 662     interface SenderHandler {
 663
 664         SendMessageResult send(
 665                 SignalServiceMessageSender messageSender,
 666                 SignalServiceAddress address,
 667                 Optional<UnidentifiedAccessPair> unidentifiedAccess
 668         ) throws IOException, UnregisteredUserException, ProofRequiredException, RateLimitException, org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
 669     }
 670
 671     interface SenderKeySenderHandler {
 672
 673         List<SendMessageResult> send(
 674                 DistributionId distributionId,
 675                 List<SignalServiceAddress> recipients,
 676                 List<UnidentifiedAccess> unidentifiedAccess,
 677                 boolean isRecipientUpdate
 678         ) throws IOException, UntrustedIdentityException, NoSessionException, InvalidKeyException, InvalidRegistrationIdException;
 679     }
 680
 681     interface LegacySenderHandler {
 682
 683         List<SendMessageResult> send(
 684                 List<SignalServiceAddress> recipients,
 685                 List<Optional<UnidentifiedAccessPair>> unidentifiedAccess,
 686                 boolean isRecipientUpdate
 687         ) throws IOException, UntrustedIdentityException;
 688     }
 689 }