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