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 org.asamk.signal.manager.api.Contact;
   4 import org.asamk.signal.manager.api.GroupId;
   5 import org.asamk.signal.manager.api.GroupNotFoundException;
   6 import org.asamk.signal.manager.api.GroupSendingNotAllowedException;
   7 import org.asamk.signal.manager.api.NotAGroupMemberException;
   8 import org.asamk.signal.manager.api.Profile;
   9 import org.asamk.signal.manager.api.UnregisteredRecipientException;
  10 import org.asamk.signal.manager.groups.GroupUtils;
  11 import org.asamk.signal.manager.internal.SignalDependencies;
  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.RecipientId;
  15 import org.asamk.signal.manager.storage.sendLog.MessageSendLogEntry;
  16 import org.signal.libsignal.protocol.InvalidKeyException;
  17 import org.signal.libsignal.protocol.InvalidRegistrationIdException;
  18 import org.signal.libsignal.protocol.NoSessionException;
  19 import org.signal.libsignal.protocol.SignalProtocolAddress;
  20 import org.signal.libsignal.protocol.message.DecryptionErrorMessage;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  24 import org.whispersystems.signalservice.api.crypto.ContentHint;
  25 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  26 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  27 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  28 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  29 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  30 import org.whispersystems.signalservice.api.messages.SignalServiceEditMessage;
  31 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  32 import org.whispersystems.signalservice.api.messages.SignalServiceTypingMessage;
  33 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  34 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  35 import org.whispersystems.signalservice.api.push.DistributionId;
  36 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  37 import org.whispersystems.signalservice.api.push.exceptions.NotFoundException;
  38 import org.whispersystems.signalservice.api.push.exceptions.ProofRequiredException;
  39 import org.whispersystems.signalservice.api.push.exceptions.RateLimitException;
  40 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  41 import org.whispersystems.signalservice.internal.push.exceptions.InvalidUnidentifiedAccessHeaderException;
  42 import org.whispersystems.signalservice.internal.push.http.PartialSendCompleteListener;
  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.Optional;
  51 import java.util.Set;
  52 import java.util.concurrent.TimeUnit;
  53 import java.util.concurrent.atomic.AtomicLong;
  54
  55 import okio.ByteString;
  56
  57 public class SendHelper {
  58
  59     private static final Logger logger = LoggerFactory.getLogger(SendHelper.class);
  60
  61     private final SignalAccount account;
  62     private final SignalDependencies dependencies;
  63     private final Context context;
  64
  65     public SendHelper(final Context context) {
  66         this.account = context.getAccount();
  67         this.dependencies = context.getDependencies();
  68         this.context = context;
  69     }
  70
  71     /**
  72      * Send a single message to one recipient.
  73      * The message is extended with the current expiration timer.
  74      */
  75     public SendMessageResult sendMessage(
  76             final SignalServiceDataMessage.Builder messageBuilder,
  77             final RecipientId recipientId,
  78             Optional<Long> editTargetTimestamp
  79     ) {
  80         var contact = account.getContactStore().getContact(recipientId);
  81         if (contact == null || !contact.isProfileSharingEnabled() || contact.isHidden()) {
  82             final var contactBuilder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
  83             contact = contactBuilder.withIsProfileSharingEnabled(true).withIsHidden(false).build();
  84             account.getContactStore().storeContact(recipientId, contact);
  85         }
  86
  87         final var expirationTime = contact.messageExpirationTime();
  88         messageBuilder.withExpiration(expirationTime);
  89
  90         if (!contact.isBlocked()) {
  91             final var profileKey = account.getProfileKey().serialize();
  92             messageBuilder.withProfileKey(profileKey);
  93         }
  94
  95         final var message = messageBuilder.build();
  96         return sendMessage(message, recipientId, editTargetTimestamp);
  97     }
  98
  99     /**
 100      * Send a group message to the given group
 101      * The message is extended with the current expiration timer for the group and the group context.
 102      */
 103     public List<SendMessageResult> sendAsGroupMessage(
 104             final SignalServiceDataMessage.Builder messageBuilder,
 105             final GroupId groupId,
 106             final boolean includeSelf,
 107             final Optional<Long> editTargetTimestamp
 108     ) throws IOException, GroupNotFoundException, NotAGroupMemberException, GroupSendingNotAllowedException {
 109         final var g = getGroupForSending(groupId);
 110         return sendAsGroupMessage(messageBuilder, g, includeSelf, editTargetTimestamp);
 111     }
 112
 113     /**
 114      * Send a complete group message to the given recipients (should be current/old/new members)
 115      * This method should only be used for create/update/quit group messages.
 116      */
 117     public List<SendMessageResult> sendGroupMessage(
 118             final SignalServiceDataMessage message,
 119             final Set<RecipientId> recipientIds,
 120             final DistributionId distributionId
 121     ) throws IOException {
 122         return sendGroupMessage(message, recipientIds, distributionId, ContentHint.IMPLICIT, Optional.empty());
 123     }
 124
 125     public SendMessageResult sendReceiptMessage(
 126             final SignalServiceReceiptMessage receiptMessage, final RecipientId recipientId
 127     ) {
 128         final var messageSendLogStore = account.getMessageSendLogStore();
 129         final var result = handleSendMessage(recipientId,
 130                 (messageSender, address, unidentifiedAccess, includePniSignature) -> messageSender.sendReceipt(address,
 131                         unidentifiedAccess,
 132                         receiptMessage,
 133                         includePniSignature));
 134         messageSendLogStore.insertIfPossible(receiptMessage.getWhen(), result, ContentHint.IMPLICIT, false);
 135         handleSendMessageResult(result);
 136         return result;
 137     }
 138
 139     public SendMessageResult sendProfileKey(RecipientId recipientId) {
 140         logger.debug("Sending updated profile key to recipient: {}", recipientId);
 141         final var profileKey = account.getProfileKey().serialize();
 142         final var message = SignalServiceDataMessage.newBuilder()
 143                 .asProfileKeyUpdate(true)
 144                 .withProfileKey(profileKey)
 145                 .build();
 146         return handleSendMessage(recipientId,
 147                 (messageSender, address, unidentifiedAccess, includePniSignature) -> messageSender.sendDataMessage(
 148                         address,
 149                         unidentifiedAccess,
 150                         ContentHint.IMPLICIT,
 151                         message,
 152                         SignalServiceMessageSender.IndividualSendEvents.EMPTY,
 153                         false,
 154                         includePniSignature));
 155     }
 156
 157     public SendMessageResult sendRetryReceipt(
 158             DecryptionErrorMessage errorMessage, RecipientId recipientId, Optional<GroupId> groupId
 159     ) {
 160         logger.debug("Sending retry receipt for {} to {}, device: {}",
 161                 errorMessage.getTimestamp(),
 162                 recipientId,
 163                 errorMessage.getDeviceId());
 164         final var result = handleSendMessage(recipientId,
 165                 (messageSender, address, unidentifiedAccess, includePniSignature) -> messageSender.sendRetryReceipt(
 166                         address,
 167                         unidentifiedAccess,
 168                         groupId.map(GroupId::serialize),
 169                         errorMessage));
 170         handleSendMessageResult(result);
 171         return result;
 172     }
 173
 174     public SendMessageResult sendNullMessage(RecipientId recipientId) {
 175         final var result = handleSendMessage(recipientId,
 176                 (messageSender, address, unidentifiedAccess, includePniSignature) -> messageSender.sendNullMessage(
 177                         address,
 178                         unidentifiedAccess));
 179         handleSendMessageResult(result);
 180         return result;
 181     }
 182
 183     public SendMessageResult sendSelfMessage(
 184             SignalServiceDataMessage.Builder messageBuilder, Optional<Long> editTargetTimestamp
 185     ) {
 186         final var recipientId = account.getSelfRecipientId();
 187         final var contact = account.getContactStore().getContact(recipientId);
 188         final var expirationTime = contact != null ? contact.messageExpirationTime() : 0;
 189         messageBuilder.withExpiration(expirationTime);
 190
 191         var message = messageBuilder.build();
 192         return sendSelfMessage(message, editTargetTimestamp);
 193     }
 194
 195     public SendMessageResult sendSyncMessage(SignalServiceSyncMessage message) {
 196         var messageSender = dependencies.getMessageSender();
 197         if (!account.isMultiDevice()) {
 198             logger.trace("Not sending sync message because there are no linked devices.");
 199             return SendMessageResult.success(account.getSelfAddress(), List.of(), false, false, 0, Optional.empty());
 200         }
 201         try {
 202             return messageSender.sendSyncMessage(message, context.getUnidentifiedAccessHelper().getAccessForSync());
 203         } catch (UnregisteredUserException e) {
 204             var address = context.getRecipientHelper().resolveSignalServiceAddress(account.getSelfRecipientId());
 205             return SendMessageResult.unregisteredFailure(address);
 206         } catch (ProofRequiredException e) {
 207             var address = context.getRecipientHelper().resolveSignalServiceAddress(account.getSelfRecipientId());
 208             return SendMessageResult.proofRequiredFailure(address, e);
 209         } catch (RateLimitException e) {
 210             var address = context.getRecipientHelper().resolveSignalServiceAddress(account.getSelfRecipientId());
 211             logger.warn("Sending failed due to rate limiting from the signal server: {}", e.getMessage());
 212             return SendMessageResult.rateLimitFailure(address, e);
 213         } catch (org.whispersystems.signalservice.api.crypto.UntrustedIdentityException e) {
 214             var address = context.getRecipientHelper().resolveSignalServiceAddress(account.getSelfRecipientId());
 215             return SendMessageResult.identityFailure(address, e.getIdentityKey());
 216         } catch (IOException e) {
 217             var address = context.getRecipientHelper().resolveSignalServiceAddress(account.getSelfRecipientId());
 218             logger.warn("Failed to send message due to IO exception: {}", e.getMessage());
 219             logger.debug("Exception", e);
 220             return SendMessageResult.networkFailure(address);
 221         }
 222     }
 223
 224     public SendMessageResult sendTypingMessage(
 225             SignalServiceTypingMessage message, RecipientId recipientId
 226     ) {
 227         final var result = handleSendMessage(recipientId,
 228                 (messageSender, address, unidentifiedAccess, includePniSignature) -> messageSender.sendTyping(List.of(
 229                         address), List.of(unidentifiedAccess), message, null).getFirst());
 230         handleSendMessageResult(result);
 231         return result;
 232     }
 233
 234     public List<SendMessageResult> sendGroupTypingMessage(
 235             SignalServiceTypingMessage message, GroupId groupId
 236     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 237         final var g = getGroupForSending(groupId);
 238         if (g.isAnnouncementGroup() && !g.isAdmin(account.getSelfRecipientId())) {
 239             throw new GroupSendingNotAllowedException(groupId, g.getTitle());
 240         }
 241         final var distributionId = g.getDistributionId();
 242         final var recipientIds = g.getMembersWithout(account.getSelfRecipientId());
 243
 244         return sendGroupTypingMessage(message, recipientIds, distributionId);
 245     }
 246
 247     public SendMessageResult resendMessage(
 248             final RecipientId recipientId, final long timestamp, final MessageSendLogEntry messageSendLogEntry
 249     ) {
 250         logger.trace("Resending message {} to {}", timestamp, recipientId);
 251         if (messageSendLogEntry.groupId().isEmpty()) {
 252             return handleSendMessage(recipientId,
 253                     (messageSender, address, unidentifiedAccess, includePniSignature) -> messageSender.resendContent(
 254                             address,
 255                             unidentifiedAccess,
 256                             timestamp,
 257                             messageSendLogEntry.content(),
 258                             messageSendLogEntry.contentHint(),
 259                             Optional.empty(),
 260                             messageSendLogEntry.urgent()));
 261         }
 262
 263         final var groupId = messageSendLogEntry.groupId().get();
 264         final var group = account.getGroupStore().getGroup(groupId);
 265
 266         if (group == null) {
 267             logger.debug("Could not find a matching group for the groupId {}! Skipping message send.",
 268                     groupId.toBase64());
 269             return null;
 270         } else if (!group.getMembers().contains(recipientId)) {
 271             logger.warn("The target user is no longer in the group {}! Skipping message send.", groupId.toBase64());
 272             return null;
 273         }
 274
 275         final var senderKeyDistributionMessage = dependencies.getMessageSender()
 276                 .getOrCreateNewGroupSession(group.getDistributionId());
 277         final var distributionBytes = ByteString.of(senderKeyDistributionMessage.serialize());
 278         final var contentToSend = messageSendLogEntry.content()
 279                 .newBuilder()
 280                 .senderKeyDistributionMessage(distributionBytes)
 281                 .build();
 282
 283         final var result = handleSendMessage(recipientId,
 284                 (messageSender, address, unidentifiedAccess, includePniSignature) -> messageSender.resendContent(address,
 285                         unidentifiedAccess,
 286                         timestamp,
 287                         contentToSend,
 288                         messageSendLogEntry.contentHint(),
 289                         Optional.of(group.getGroupId().serialize()),
 290                         messageSendLogEntry.urgent()));
 291
 292         if (result.isSuccess()) {
 293             final var address = context.getRecipientHelper().resolveSignalServiceAddress(recipientId);
 294             final var addresses = result.getSuccess()
 295                     .getDevices()
 296                     .stream()
 297                     .map(device -> new SignalProtocolAddress(address.getIdentifier(), device))
 298                     .toList();
 299
 300             account.getSenderKeyStore().markSenderKeySharedWith(group.getDistributionId(), addresses);
 301         }
 302
 303         return result;
 304     }
 305
 306     private List<SendMessageResult> sendAsGroupMessage(
 307             final SignalServiceDataMessage.Builder messageBuilder,
 308             final GroupInfo g,
 309             final boolean includeSelf,
 310             final Optional<Long> editTargetTimestamp
 311     ) throws IOException, GroupSendingNotAllowedException {
 312         GroupUtils.setGroupContext(messageBuilder, g);
 313         messageBuilder.withExpiration(g.getMessageExpirationTimer());
 314
 315         final var message = messageBuilder.build();
 316         final var recipients = includeSelf ? g.getMembers() : g.getMembersWithout(account.getSelfRecipientId());
 317
 318         if (g.isAnnouncementGroup() && !g.isAdmin(account.getSelfRecipientId())) {
 319             if (message.getBody().isPresent()
 320                     || message.getAttachments().isPresent()
 321                     || message.getQuote().isPresent()
 322                     || message.getPreviews().isPresent()
 323                     || message.getMentions().isPresent()
 324                     || message.getSticker().isPresent()) {
 325                 throw new GroupSendingNotAllowedException(g.getGroupId(), g.getTitle());
 326             }
 327         }
 328
 329         return sendGroupMessage(message,
 330                 recipients,
 331                 g.getDistributionId(),
 332                 ContentHint.RESENDABLE,
 333                 editTargetTimestamp);
 334     }
 335
 336     private List<SendMessageResult> sendGroupMessage(
 337             final SignalServiceDataMessage message,
 338             final Set<RecipientId> recipientIds,
 339             final DistributionId distributionId,
 340             final ContentHint contentHint,
 341             final Optional<Long> editTargetTimestamp
 342     ) throws IOException {
 343         final var messageSender = dependencies.getMessageSender();
 344         final var messageSendLogStore = account.getMessageSendLogStore();
 345         final AtomicLong entryId = new AtomicLong(-1);
 346
 347         final var urgent = true;
 348         final PartialSendCompleteListener partialSendCompleteListener = sendResult -> {
 349             logger.trace("Partial message send result: {}", sendResult.isSuccess());
 350             synchronized (entryId) {
 351                 if (entryId.get() == -1) {
 352                     final var newId = messageSendLogStore.insertIfPossible(message.getTimestamp(),
 353                             sendResult,
 354                             contentHint,
 355                             urgent);
 356                     entryId.set(newId);
 357                 } else {
 358                     messageSendLogStore.addRecipientToExistingEntryIfPossible(entryId.get(), sendResult);
 359                 }
 360             }
 361         };
 362         final LegacySenderHandler legacySender = (recipients, unidentifiedAccess, isRecipientUpdate) ->
 363                 editTargetTimestamp.isEmpty()
 364                         ? messageSender.sendDataMessage(recipients,
 365                         unidentifiedAccess,
 366                         isRecipientUpdate,
 367                         contentHint,
 368                         message,
 369                         SignalServiceMessageSender.LegacyGroupEvents.EMPTY,
 370                         partialSendCompleteListener,
 371                         () -> false,
 372                         urgent)
 373                         : messageSender.sendEditMessage(recipients,
 374                                 unidentifiedAccess,
 375                                 isRecipientUpdate,
 376                                 contentHint,
 377                                 message,
 378                                 SignalServiceMessageSender.LegacyGroupEvents.EMPTY,
 379                                 partialSendCompleteListener,
 380                                 () -> false,
 381                                 urgent,
 382                                 editTargetTimestamp.get());
 383         final SenderKeySenderHandler senderKeySender = (distId, recipients, unidentifiedAccess, isRecipientUpdate) -> messageSender.sendGroupDataMessage(
 384                 distId,
 385                 recipients,
 386                 unidentifiedAccess,
 387                 isRecipientUpdate,
 388                 contentHint,
 389                 message,
 390                 SignalServiceMessageSender.SenderKeyGroupEvents.EMPTY,
 391                 urgent,
 392                 false,
 393                 editTargetTimestamp.map(timestamp -> new SignalServiceEditMessage(timestamp, message)).orElse(null),
 394                 sendResult -> {
 395                     logger.trace("Partial message send results: {}", sendResult.size());
 396                     synchronized (entryId) {
 397                         if (entryId.get() == -1) {
 398                             final var newId = messageSendLogStore.insertIfPossible(message.getTimestamp(),
 399                                     sendResult,
 400                                     contentHint,
 401                                     urgent);
 402                             entryId.set(newId);
 403                         } else {
 404                             messageSendLogStore.addRecipientToExistingEntryIfPossible(entryId.get(), sendResult);
 405                         }
 406                     }
 407                     synchronized (entryId) {
 408                         if (entryId.get() == -1) {
 409                             final var newId = messageSendLogStore.insertIfPossible(message.getTimestamp(),
 410                                     sendResult,
 411                                     contentHint,
 412                                     urgent);
 413                             entryId.set(newId);
 414                         } else {
 415                             messageSendLogStore.addRecipientToExistingEntryIfPossible(entryId.get(), sendResult);
 416                         }
 417                     }
 418                 });
 419         final var results = sendGroupMessageInternal(legacySender, senderKeySender, recipientIds, distributionId);
 420
 421         for (var r : results) {
 422             handleSendMessageResult(r);
 423         }
 424
 425         return results;
 426     }
 427
 428     private List<SendMessageResult> sendGroupTypingMessage(
 429             final SignalServiceTypingMessage message,
 430             final Set<RecipientId> recipientIds,
 431             final DistributionId distributionId
 432     ) throws IOException {
 433         final var messageSender = dependencies.getMessageSender();
 434         final var results = sendGroupMessageInternal((recipients, unidentifiedAccess, isRecipientUpdate) -> messageSender.sendTyping(
 435                         recipients,
 436                         unidentifiedAccess,
 437                         message,
 438                         () -> false),
 439                 (distId, recipients, unidentifiedAccess, isRecipientUpdate) -> messageSender.sendGroupTyping(distId,
 440                         recipients,
 441                         unidentifiedAccess,
 442                         message),
 443                 recipientIds,
 444                 distributionId);
 445
 446         for (var r : results) {
 447             handleSendMessageResult(r);
 448         }
 449
 450         return results;
 451     }
 452
 453     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 454         var g = context.getGroupHelper().getGroup(groupId);
 455         if (g == null) {
 456             throw new GroupNotFoundException(groupId);
 457         }
 458         if (!g.isMember(account.getSelfRecipientId())) {
 459             throw new NotAGroupMemberException(groupId, g.getTitle());
 460         }
 461         if (!g.isProfileSharingEnabled()) {
 462             g.setProfileSharingEnabled(true);
 463             account.getGroupStore().updateGroup(g);
 464         }
 465         return g;
 466     }
 467
 468     private List<SendMessageResult> sendGroupMessageInternal(
 469             final LegacySenderHandler legacySender,
 470             final SenderKeySenderHandler senderKeySender,
 471             final Set<RecipientId> recipientIds,
 472             final DistributionId distributionId
 473     ) throws IOException {
 474         long startTime = System.currentTimeMillis();
 475         // isRecipientUpdate is true if we've already sent this message to some recipients in the past, otherwise false.
 476         final var isRecipientUpdate = false;
 477         Set<RecipientId> senderKeyTargets = distributionId == null
 478                 ? Set.of()
 479                 : getSenderKeyCapableRecipientIds(recipientIds);
 480         final var allResults = new ArrayList<SendMessageResult>(recipientIds.size());
 481
 482         if (!senderKeyTargets.isEmpty()) {
 483             final var results = sendGroupMessageInternalWithSenderKey(senderKeySender,
 484                     senderKeyTargets,
 485                     distributionId,
 486                     isRecipientUpdate);
 487
 488             if (results == null) {
 489                 senderKeyTargets = Set.of();
 490             } else {
 491                 results.stream().filter(SendMessageResult::isSuccess).forEach(allResults::add);
 492                 final var recipientResolver = account.getRecipientResolver();
 493                 final var failedTargets = results.stream()
 494                         .filter(r -> !r.isSuccess())
 495                         .map(r -> recipientResolver.resolveRecipient(r.getAddress()))
 496                         .toList();
 497                 if (!failedTargets.isEmpty()) {
 498                     senderKeyTargets = new HashSet<>(senderKeyTargets);
 499                     failedTargets.forEach(senderKeyTargets::remove);
 500                 }
 501             }
 502         }
 503
 504         final var legacyTargets = new HashSet<>(recipientIds);
 505         legacyTargets.removeAll(senderKeyTargets);
 506         final boolean onlyTargetIsSelfWithLinkedDevice = recipientIds.isEmpty() && account.isMultiDevice();
 507
 508         if (!legacyTargets.isEmpty() || onlyTargetIsSelfWithLinkedDevice) {
 509             if (!legacyTargets.isEmpty()) {
 510                 logger.debug("Need to do {} legacy sends.", legacyTargets.size());
 511             } else {
 512                 logger.debug("Need to do a legacy send to send a sync message for a group of only ourselves.");
 513             }
 514
 515             final List<SendMessageResult> results = sendGroupMessageInternalWithLegacy(legacySender,
 516                     legacyTargets,
 517                     isRecipientUpdate || !allResults.isEmpty());
 518             allResults.addAll(results);
 519         }
 520         final var duration = Duration.ofMillis(System.currentTimeMillis() - startTime);
 521         logger.debug("Sending took {}", duration.toString());
 522         return allResults;
 523     }
 524
 525     private Set<RecipientId> getSenderKeyCapableRecipientIds(final Set<RecipientId> recipientIds) {
 526         final var senderKeyTargets = new HashSet<RecipientId>();
 527         final var recipientList = new ArrayList<>(recipientIds);
 528         for (final var recipientId : recipientList) {
 529             final var access = context.getUnidentifiedAccessHelper().getAccessFor(recipientId);
 530             if (access.isEmpty() || access.get().getTargetUnidentifiedAccess().isEmpty()) {
 531                 continue;
 532             }
 533
 534             final var serviceId = account.getRecipientAddressResolver()
 535                     .resolveRecipientAddress(recipientId)
 536                     .serviceId()
 537                     .orElse(null);
 538             if (serviceId == null) {
 539                 continue;
 540             }
 541             final var identity = account.getIdentityKeyStore().getIdentityInfo(serviceId);
 542             if (identity == null || !identity.getTrustLevel().isTrusted()) {
 543                 continue;
 544             }
 545
 546             senderKeyTargets.add(recipientId);
 547         }
 548
 549         if (senderKeyTargets.size() < 2) {
 550             logger.debug("Too few sender-key-capable users ({}). Doing all legacy sends.", senderKeyTargets.size());
 551             return Set.of();
 552         }
 553
 554         logger.debug("Can use sender key for {}/{} recipients.", senderKeyTargets.size(), recipientIds.size());
 555         return senderKeyTargets;
 556     }
 557
 558     private List<SendMessageResult> sendGroupMessageInternalWithLegacy(
 559             final LegacySenderHandler sender, final Set<RecipientId> recipientIds, final boolean isRecipientUpdate
 560     ) throws IOException {
 561         final var recipientIdList = new ArrayList<>(recipientIds);
 562         final var addresses = recipientIdList.stream()
 563                 .map(context.getRecipientHelper()::resolveSignalServiceAddress)
 564                 .toList();
 565         final var unidentifiedAccesses = context.getUnidentifiedAccessHelper().getAccessFor(recipientIdList);
 566         try {
 567             final var results = sender.send(addresses, unidentifiedAccesses, isRecipientUpdate);
 568
 569             final var successCount = results.stream().filter(SendMessageResult::isSuccess).count();
 570             logger.debug("Successfully sent using 1:1 to {}/{} legacy targets.", successCount, recipientIdList.size());
 571             return results;
 572         } catch (org.whispersystems.signalservice.api.crypto.UntrustedIdentityException e) {
 573             return List.of();
 574         }
 575     }
 576
 577     private List<SendMessageResult> sendGroupMessageInternalWithSenderKey(
 578             final SenderKeySenderHandler sender,
 579             final Set<RecipientId> recipientIds,
 580             final DistributionId distributionId,
 581             final boolean isRecipientUpdate
 582     ) throws IOException {
 583         final var recipientIdList = new ArrayList<>(recipientIds);
 584
 585         long keyCreateTime = account.getSenderKeyStore()
 586                 .getCreateTimeForOurKey(account.getAci(), account.getDeviceId(), distributionId);
 587         long keyAge = System.currentTimeMillis() - keyCreateTime;
 588
 589         if (keyCreateTime != -1 && keyAge > TimeUnit.DAYS.toMillis(14)) {
 590             logger.debug("DistributionId {} was created at {} and is {} ms old (~{} days). Rotating.",
 591                     distributionId,
 592                     keyCreateTime,
 593                     keyAge,
 594                     TimeUnit.MILLISECONDS.toDays(keyAge));
 595             account.getSenderKeyStore().deleteOurKey(account.getAci(), distributionId);
 596         }
 597
 598         List<SignalServiceAddress> addresses = recipientIdList.stream()
 599                 .map(context.getRecipientHelper()::resolveSignalServiceAddress)
 600                 .toList();
 601         List<UnidentifiedAccess> unidentifiedAccesses = context.getUnidentifiedAccessHelper()
 602                 .getAccessFor(recipientIdList)
 603                 .stream()
 604                 .map(Optional::get)
 605                 .map(UnidentifiedAccessPair::getTargetUnidentifiedAccess)
 606                 .map(Optional::get)
 607                 .toList();
 608
 609         try {
 610             List<SendMessageResult> results = sender.send(distributionId,
 611                     addresses,
 612                     unidentifiedAccesses,
 613                     isRecipientUpdate);
 614
 615             final var successCount = results.stream().filter(SendMessageResult::isSuccess).count();
 616             logger.debug("Successfully sent using sender key to {}/{} sender key targets.",
 617                     successCount,
 618                     addresses.size());
 619
 620             return results;
 621         } catch (org.whispersystems.signalservice.api.crypto.UntrustedIdentityException e) {
 622             return null;
 623         } catch (InvalidUnidentifiedAccessHeaderException e) {
 624             logger.warn("Someone had a bad UD header. Falling back to legacy sends.", e);
 625             return null;
 626         } catch (NoSessionException e) {
 627             logger.warn("No session. Falling back to legacy sends.", e);
 628             account.getSenderKeyStore().deleteOurKey(account.getAci(), distributionId);
 629             return null;
 630         } catch (InvalidKeyException e) {
 631             logger.warn("Invalid key. Falling back to legacy sends.", e);
 632             account.getSenderKeyStore().deleteOurKey(account.getAci(), distributionId);
 633             return null;
 634         } catch (InvalidRegistrationIdException e) {
 635             logger.warn("Invalid registrationId. Falling back to legacy sends.", e);
 636             return null;
 637         } catch (NotFoundException e) {
 638             logger.warn("Someone was unregistered. Falling back to legacy sends.", e);
 639             return null;
 640         } catch (IOException e) {
 641             if (e.getCause() instanceof InvalidKeyException) {
 642                 logger.warn("Invalid key. Falling back to legacy sends.", e);
 643                 return null;
 644             } else {
 645                 throw e;
 646             }
 647         }
 648     }
 649
 650     private SendMessageResult sendMessage(
 651             SignalServiceDataMessage message, RecipientId recipientId, Optional<Long> editTargetTimestamp
 652     ) {
 653         final var messageSendLogStore = account.getMessageSendLogStore();
 654         final var urgent = true;
 655         final var result = handleSendMessage(recipientId,
 656                 editTargetTimestamp.isEmpty()
 657                         ? (messageSender, address, unidentifiedAccess, includePniSignature) -> messageSender.sendDataMessage(
 658                         address,
 659                         unidentifiedAccess,
 660                         ContentHint.RESENDABLE,
 661                         message,
 662                         SignalServiceMessageSender.IndividualSendEvents.EMPTY,
 663                         urgent,
 664                         includePniSignature)
 665                         : (messageSender, address, unidentifiedAccess, includePniSignature) -> messageSender.sendEditMessage(
 666                                 address,
 667                                 unidentifiedAccess,
 668                                 ContentHint.RESENDABLE,
 669                                 message,
 670                                 SignalServiceMessageSender.IndividualSendEvents.EMPTY,
 671                                 urgent,
 672                                 editTargetTimestamp.get()));
 673         messageSendLogStore.insertIfPossible(message.getTimestamp(), result, ContentHint.RESENDABLE, urgent);
 674         handleSendMessageResult(result);
 675         return result;
 676     }
 677
 678     private SendMessageResult handleSendMessage(RecipientId recipientId, SenderHandler s) {
 679         var messageSender = dependencies.getMessageSender();
 680
 681         var address = context.getRecipientHelper().resolveSignalServiceAddress(recipientId);
 682         try {
 683             final boolean includePniSignature = account.getRecipientStore().needsPniSignature(recipientId);
 684             try {
 685                 return s.send(messageSender,
 686                         address,
 687                         context.getUnidentifiedAccessHelper().getAccessFor(recipientId),
 688                         includePniSignature);
 689             } catch (UnregisteredUserException e) {
 690                 final RecipientId newRecipientId;
 691                 try {
 692                     newRecipientId = context.getRecipientHelper().refreshRegisteredUser(recipientId);
 693                 } catch (UnregisteredRecipientException ex) {
 694                     return SendMessageResult.unregisteredFailure(address);
 695                 }
 696                 address = context.getRecipientHelper().resolveSignalServiceAddress(newRecipientId);
 697                 return s.send(messageSender,
 698                         address,
 699                         context.getUnidentifiedAccessHelper().getAccessFor(newRecipientId),
 700                         includePniSignature);
 701             }
 702         } catch (UnregisteredUserException e) {
 703             return SendMessageResult.unregisteredFailure(address);
 704         } catch (ProofRequiredException e) {
 705             return SendMessageResult.proofRequiredFailure(address, e);
 706         } catch (RateLimitException e) {
 707             logger.warn("Sending failed due to rate limiting from the signal server: {}", e.getMessage());
 708             return SendMessageResult.rateLimitFailure(address, e);
 709         } catch (org.whispersystems.signalservice.api.crypto.UntrustedIdentityException e) {
 710             return SendMessageResult.identityFailure(address, e.getIdentityKey());
 711         } catch (IOException e) {
 712             logger.warn("Failed to send message due to IO exception: {}", e.getMessage());
 713             logger.debug("Exception", e);
 714             return SendMessageResult.networkFailure(address);
 715         }
 716     }
 717
 718     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message, Optional<Long> editTargetTimestamp) {
 719         var address = account.getSelfAddress();
 720         var transcript = new SentTranscriptMessage(Optional.of(address),
 721                 message.getTimestamp(),
 722                 editTargetTimestamp.isEmpty() ? Optional.of(message) : Optional.empty(),
 723                 message.getExpiresInSeconds(),
 724                 Map.of(address.getServiceId(), true),
 725                 false,
 726                 Optional.empty(),
 727                 Set.of(),
 728                 editTargetTimestamp.map((timestamp) -> new SignalServiceEditMessage(timestamp, message)));
 729         var syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
 730
 731         return sendSyncMessage(syncMessage);
 732     }
 733
 734     private void handleSendMessageResult(final SendMessageResult r) {
 735         if (r.isSuccess() && !r.getSuccess().isUnidentified()) {
 736             final var recipientId = account.getRecipientResolver().resolveRecipient(r.getAddress());
 737             final var profile = account.getProfileStore().getProfile(recipientId);
 738             if (profile != null && (
 739                     profile.getUnidentifiedAccessMode() == Profile.UnidentifiedAccessMode.ENABLED
 740                             || profile.getUnidentifiedAccessMode() == Profile.UnidentifiedAccessMode.UNRESTRICTED
 741             )) {
 742                 account.getProfileStore()
 743                         .storeProfile(recipientId,
 744                                 Profile.newBuilder(profile)
 745                                         .withUnidentifiedAccessMode(Profile.UnidentifiedAccessMode.UNKNOWN)
 746                                         .build());
 747             }
 748         }
 749         if (r.isUnregisteredFailure()) {
 750             final var recipientId = account.getRecipientResolver().resolveRecipient(r.getAddress());
 751             final var profile = account.getProfileStore().getProfile(recipientId);
 752             if (profile != null && (
 753                     profile.getUnidentifiedAccessMode() == Profile.UnidentifiedAccessMode.ENABLED
 754                             || profile.getUnidentifiedAccessMode() == Profile.UnidentifiedAccessMode.UNRESTRICTED
 755             )) {
 756                 account.getProfileStore()
 757                         .storeProfile(recipientId,
 758                                 Profile.newBuilder(profile)
 759                                         .withUnidentifiedAccessMode(Profile.UnidentifiedAccessMode.UNKNOWN)
 760                                         .build());
 761             }
 762         }
 763         if (r.getIdentityFailure() != null) {
 764             final var recipientId = account.getRecipientResolver().resolveRecipient(r.getAddress());
 765             context.getIdentityHelper()
 766                     .handleIdentityFailure(recipientId, r.getAddress().getServiceId(), r.getIdentityFailure());
 767         }
 768     }
 769
 770     interface SenderHandler {
 771
 772         SendMessageResult send(
 773                 SignalServiceMessageSender messageSender,
 774                 SignalServiceAddress address,
 775                 Optional<UnidentifiedAccessPair> unidentifiedAccess,
 776                 boolean includePniSignature
 777         ) throws IOException, UnregisteredUserException, ProofRequiredException, RateLimitException, org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
 778     }
 779
 780     interface SenderKeySenderHandler {
 781
 782         List<SendMessageResult> send(
 783                 DistributionId distributionId,
 784                 List<SignalServiceAddress> recipients,
 785                 List<UnidentifiedAccess> unidentifiedAccess,
 786                 boolean isRecipientUpdate
 787         ) throws IOException, UntrustedIdentityException, NoSessionException, InvalidKeyException, InvalidRegistrationIdException;
 788     }
 789
 790     interface LegacySenderHandler {
 791
 792         List<SendMessageResult> send(
 793                 List<SignalServiceAddress> recipients,
 794                 List<Optional<UnidentifiedAccessPair>> unidentifiedAccess,
 795                 boolean isRecipientUpdate
 796         ) throws IOException, UntrustedIdentityException;
 797     }
 798 }