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

   1 /*
   2   Copyright (C) 2015-2022 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager.internal;
  18
  19 import org.asamk.signal.manager.Manager;
  20 import org.asamk.signal.manager.api.AlreadyReceivingException;
  21 import org.asamk.signal.manager.api.AttachmentInvalidException;
  22 import org.asamk.signal.manager.api.CaptchaRequiredException;
  23 import org.asamk.signal.manager.api.Configuration;
  24 import org.asamk.signal.manager.api.Device;
  25 import org.asamk.signal.manager.api.DeviceLinkUrl;
  26 import org.asamk.signal.manager.api.Group;
  27 import org.asamk.signal.manager.api.GroupId;
  28 import org.asamk.signal.manager.api.GroupInviteLinkUrl;
  29 import org.asamk.signal.manager.api.GroupNotFoundException;
  30 import org.asamk.signal.manager.api.GroupSendingNotAllowedException;
  31 import org.asamk.signal.manager.api.Identity;
  32 import org.asamk.signal.manager.api.IdentityVerificationCode;
  33 import org.asamk.signal.manager.api.InactiveGroupLinkException;
  34 import org.asamk.signal.manager.api.IncorrectPinException;
  35 import org.asamk.signal.manager.api.InvalidDeviceLinkException;
  36 import org.asamk.signal.manager.api.InvalidStickerException;
  37 import org.asamk.signal.manager.api.InvalidUsernameException;
  38 import org.asamk.signal.manager.api.LastGroupAdminException;
  39 import org.asamk.signal.manager.api.Message;
  40 import org.asamk.signal.manager.api.MessageEnvelope;
  41 import org.asamk.signal.manager.api.NonNormalizedPhoneNumberException;
  42 import org.asamk.signal.manager.api.NotAGroupMemberException;
  43 import org.asamk.signal.manager.api.NotPrimaryDeviceException;
  44 import org.asamk.signal.manager.api.Pair;
  45 import org.asamk.signal.manager.api.PendingAdminApprovalException;
  46 import org.asamk.signal.manager.api.PinLockedException;
  47 import org.asamk.signal.manager.api.Profile;
  48 import org.asamk.signal.manager.api.RateLimitException;
  49 import org.asamk.signal.manager.api.ReceiveConfig;
  50 import org.asamk.signal.manager.api.Recipient;
  51 import org.asamk.signal.manager.api.RecipientIdentifier;
  52 import org.asamk.signal.manager.api.SendGroupMessageResults;
  53 import org.asamk.signal.manager.api.SendMessageResult;
  54 import org.asamk.signal.manager.api.SendMessageResults;
  55 import org.asamk.signal.manager.api.StickerPackId;
  56 import org.asamk.signal.manager.api.StickerPackInvalidException;
  57 import org.asamk.signal.manager.api.StickerPackUrl;
  58 import org.asamk.signal.manager.api.TextStyle;
  59 import org.asamk.signal.manager.api.TypingAction;
  60 import org.asamk.signal.manager.api.UnregisteredRecipientException;
  61 import org.asamk.signal.manager.api.UpdateGroup;
  62 import org.asamk.signal.manager.api.UpdateProfile;
  63 import org.asamk.signal.manager.api.UserStatus;
  64 import org.asamk.signal.manager.config.ServiceEnvironmentConfig;
  65 import org.asamk.signal.manager.helper.AccountFileUpdater;
  66 import org.asamk.signal.manager.helper.Context;
  67 import org.asamk.signal.manager.helper.RecipientHelper.RegisteredUser;
  68 import org.asamk.signal.manager.storage.AttachmentStore;
  69 import org.asamk.signal.manager.storage.AvatarStore;
  70 import org.asamk.signal.manager.storage.SignalAccount;
  71 import org.asamk.signal.manager.storage.groups.GroupInfo;
  72 import org.asamk.signal.manager.storage.identities.IdentityInfo;
  73 import org.asamk.signal.manager.storage.recipients.RecipientId;
  74 import org.asamk.signal.manager.storage.stickerPacks.JsonStickerPack;
  75 import org.asamk.signal.manager.storage.stickerPacks.StickerPackStore;
  76 import org.asamk.signal.manager.storage.stickers.StickerPack;
  77 import org.asamk.signal.manager.util.AttachmentUtils;
  78 import org.asamk.signal.manager.util.KeyUtils;
  79 import org.asamk.signal.manager.util.MimeUtils;
  80 import org.asamk.signal.manager.util.StickerUtils;
  81 import org.signal.libsignal.protocol.InvalidMessageException;
  82 import org.signal.libsignal.usernames.BaseUsernameException;
  83 import org.slf4j.Logger;
  84 import org.slf4j.LoggerFactory;
  85 import org.whispersystems.signalservice.api.SignalSessionLock;
  86 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  87 import org.whispersystems.signalservice.api.messages.SignalServicePreview;
  88 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  89 import org.whispersystems.signalservice.api.messages.SignalServiceTypingMessage;
  90 import org.whispersystems.signalservice.api.push.ServiceId;
  91 import org.whispersystems.signalservice.api.push.ServiceId.ACI;
  92 import org.whispersystems.signalservice.api.push.ServiceIdType;
  93 import org.whispersystems.signalservice.api.push.exceptions.CdsiResourceExhaustedException;
  94 import org.whispersystems.signalservice.api.util.DeviceNameUtil;
  95 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  96 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
  97 import org.whispersystems.signalservice.api.util.StreamDetails;
  98 import org.whispersystems.signalservice.internal.util.Hex;
  99 import org.whispersystems.signalservice.internal.util.Util;
 100
 101 import java.io.ByteArrayInputStream;
 102 import java.io.File;
 103 import java.io.IOException;
 104 import java.io.InputStream;
 105 import java.nio.charset.StandardCharsets;
 106 import java.time.Duration;
 107 import java.util.ArrayList;
 108 import java.util.Collection;
 109 import java.util.HashMap;
 110 import java.util.HashSet;
 111 import java.util.List;
 112 import java.util.Map;
 113 import java.util.Objects;
 114 import java.util.Optional;
 115 import java.util.Set;
 116 import java.util.concurrent.ExecutorService;
 117 import java.util.concurrent.Executors;
 118 import java.util.concurrent.TimeUnit;
 119 import java.util.concurrent.atomic.AtomicInteger;
 120 import java.util.concurrent.locks.ReentrantLock;
 121 import java.util.function.Function;
 122 import java.util.stream.Collectors;
 123 import java.util.stream.Stream;
 124
 125 import io.reactivex.rxjava3.disposables.CompositeDisposable;
 126
 127 public class ManagerImpl implements Manager {
 128
 129     private static final Logger logger = LoggerFactory.getLogger(ManagerImpl.class);
 130
 131     private SignalAccount account;
 132     private final SignalDependencies dependencies;
 133     private final Context context;
 134
 135     private final ExecutorService executor = Executors.newCachedThreadPool();
 136
 137     private Thread receiveThread;
 138     private boolean isReceivingSynchronous;
 139     private final Set<ReceiveMessageHandler> weakHandlers = new HashSet<>();
 140     private final Set<ReceiveMessageHandler> messageHandlers = new HashSet<>();
 141     private final List<Runnable> closedListeners = new ArrayList<>();
 142     private final List<Runnable> addressChangedListeners = new ArrayList<>();
 143     private final CompositeDisposable disposable = new CompositeDisposable();
 144
 145     public ManagerImpl(
 146             SignalAccount account,
 147             PathConfig pathConfig,
 148             AccountFileUpdater accountFileUpdater,
 149             ServiceEnvironmentConfig serviceEnvironmentConfig,
 150             String userAgent
 151     ) {
 152         this.account = account;
 153
 154         final var sessionLock = new SignalSessionLock() {
 155             private final ReentrantLock LEGACY_LOCK = new ReentrantLock();
 156
 157             @Override
 158             public Lock acquire() {
 159                 LEGACY_LOCK.lock();
 160                 return LEGACY_LOCK::unlock;
 161             }
 162         };
 163         this.dependencies = new SignalDependencies(serviceEnvironmentConfig,
 164                 userAgent,
 165                 account.getCredentialsProvider(),
 166                 account.getSignalServiceDataStore(),
 167                 executor,
 168                 sessionLock);
 169         final var avatarStore = new AvatarStore(pathConfig.avatarsPath());
 170         final var attachmentStore = new AttachmentStore(pathConfig.attachmentsPath());
 171         final var stickerPackStore = new StickerPackStore(pathConfig.stickerPacksPath());
 172
 173         this.context = new Context(account, new AccountFileUpdater() {
 174             @Override
 175             public void updateAccountIdentifiers(final String number, final ACI aci) {
 176                 accountFileUpdater.updateAccountIdentifiers(number, aci);
 177                 synchronized (addressChangedListeners) {
 178                     addressChangedListeners.forEach(Runnable::run);
 179                 }
 180             }
 181
 182             @Override
 183             public void removeAccount() {
 184                 accountFileUpdater.removeAccount();
 185             }
 186         }, dependencies, avatarStore, attachmentStore, stickerPackStore);
 187         this.context.getAccountHelper().setUnregisteredListener(this::close);
 188         this.context.getReceiveHelper().setAuthenticationFailureListener(this::close);
 189         this.context.getReceiveHelper().setCaughtUpWithOldMessagesListener(() -> {
 190             synchronized (this) {
 191                 this.notifyAll();
 192             }
 193         });
 194         disposable.add(account.getIdentityKeyStore().getIdentityChanges().subscribe(serviceId -> {
 195             logger.trace("Archiving old sessions for {}", serviceId);
 196             account.getAccountData(ServiceIdType.ACI).getSessionStore().archiveSessions(serviceId);
 197             account.getAccountData(ServiceIdType.PNI).getSessionStore().archiveSessions(serviceId);
 198             account.getSenderKeyStore().deleteSharedWith(serviceId);
 199             final var recipientId = account.getRecipientResolver().resolveRecipient(serviceId);
 200             final var profile = account.getProfileStore().getProfile(recipientId);
 201             if (profile != null) {
 202                 account.getProfileStore()
 203                         .storeProfile(recipientId,
 204                                 Profile.newBuilder(profile)
 205                                         .withUnidentifiedAccessMode(Profile.UnidentifiedAccessMode.UNKNOWN)
 206                                         .withLastUpdateTimestamp(0)
 207                                         .build());
 208             }
 209         }));
 210     }
 211
 212     @Override
 213     public String getSelfNumber() {
 214         return account.getNumber();
 215     }
 216
 217     public void checkAccountState() throws IOException {
 218         context.getAccountHelper().checkAccountState();
 219         final var lastRecipientsRefresh = account.getLastRecipientsRefresh();
 220         if (lastRecipientsRefresh == null
 221                 || lastRecipientsRefresh < System.currentTimeMillis() - TimeUnit.DAYS.toMillis(1)) {
 222             try {
 223                 context.getRecipientHelper().refreshUsers();
 224             } catch (Exception e) {
 225                 logger.warn("Full CDSI recipients refresh failed, ignoring: {} ({})",
 226                         e.getMessage(),
 227                         e.getClass().getSimpleName());
 228                 logger.debug("Full CDSI refresh failed", e);
 229             }
 230             context.getAccountHelper().checkWhoAmiI();
 231         }
 232     }
 233
 234     @Override
 235     public Map<String, UserStatus> getUserStatus(Set<String> numbers) throws IOException, RateLimitException {
 236         final var canonicalizedNumbers = numbers.stream().collect(Collectors.toMap(n -> n, n -> {
 237             try {
 238                 final var canonicalizedNumber = PhoneNumberFormatter.formatNumber(n, account.getNumber());
 239                 if (!canonicalizedNumber.equals(n)) {
 240                     logger.debug("Normalized number {} to {}.", n, canonicalizedNumber);
 241                 }
 242                 return canonicalizedNumber;
 243             } catch (InvalidNumberException e) {
 244                 return "";
 245             }
 246         }));
 247
 248         // Note "registeredUsers" has no optionals. It only gives us info on users who are registered
 249         final var canonicalizedNumbersSet = canonicalizedNumbers.values()
 250                 .stream()
 251                 .filter(s -> !s.isEmpty())
 252                 .collect(Collectors.toSet());
 253
 254         final Map<String, RegisteredUser> registeredUsers;
 255         try {
 256             registeredUsers = context.getRecipientHelper().getRegisteredUsers(canonicalizedNumbersSet);
 257         } catch (CdsiResourceExhaustedException e) {
 258             logger.debug("CDSI resource exhausted: {}", e.getMessage());
 259             throw new RateLimitException(System.currentTimeMillis() + e.getRetryAfterSeconds() * 1000L);
 260         }
 261
 262         return numbers.stream().collect(Collectors.toMap(n -> n, n -> {
 263             final var number = canonicalizedNumbers.get(n);
 264             final var user = registeredUsers.get(number);
 265             final var serviceId = user == null ? null : user.getServiceId();
 266             final var profile = serviceId == null
 267                     ? null
 268                     : context.getProfileHelper()
 269                             .getRecipientProfile(account.getRecipientResolver().resolveRecipient(serviceId));
 270             return new UserStatus(number.isEmpty() ? null : number,
 271                     serviceId == null ? null : serviceId.getRawUuid(),
 272                     profile != null
 273                             && profile.getUnidentifiedAccessMode() == Profile.UnidentifiedAccessMode.UNRESTRICTED);
 274         }));
 275     }
 276
 277     @Override
 278     public void updateAccountAttributes(String deviceName) throws IOException {
 279         if (deviceName != null) {
 280             context.getAccountHelper().setDeviceName(deviceName);
 281         }
 282         context.getAccountHelper().updateAccountAttributes();
 283         context.getAccountHelper().checkWhoAmiI();
 284     }
 285
 286     @Override
 287     public Configuration getConfiguration() {
 288         final var configurationStore = account.getConfigurationStore();
 289         return Configuration.from(configurationStore);
 290     }
 291
 292     @Override
 293     public void updateConfiguration(
 294             Configuration configuration
 295     ) throws NotPrimaryDeviceException {
 296         if (!account.isPrimaryDevice()) {
 297             throw new NotPrimaryDeviceException();
 298         }
 299
 300         final var configurationStore = account.getConfigurationStore();
 301         if (configuration.readReceipts().isPresent()) {
 302             configurationStore.setReadReceipts(configuration.readReceipts().get());
 303         }
 304         if (configuration.unidentifiedDeliveryIndicators().isPresent()) {
 305             configurationStore.setUnidentifiedDeliveryIndicators(configuration.unidentifiedDeliveryIndicators().get());
 306         }
 307         if (configuration.typingIndicators().isPresent()) {
 308             configurationStore.setTypingIndicators(configuration.typingIndicators().get());
 309         }
 310         if (configuration.linkPreviews().isPresent()) {
 311             configurationStore.setLinkPreviews(configuration.linkPreviews().get());
 312         }
 313         context.getSyncHelper().sendConfigurationMessage();
 314     }
 315
 316     @Override
 317     public void updateProfile(UpdateProfile updateProfile) throws IOException {
 318         context.getProfileHelper()
 319                 .setProfile(updateProfile.getGivenName(),
 320                         updateProfile.getFamilyName(),
 321                         updateProfile.getAbout(),
 322                         updateProfile.getAboutEmoji(),
 323                         updateProfile.isDeleteAvatar()
 324                                 ? Optional.empty()
 325                                 : updateProfile.getAvatar() == null ? null : Optional.of(updateProfile.getAvatar()),
 326                         updateProfile.getMobileCoinAddress());
 327         context.getSyncHelper().sendSyncFetchProfileMessage();
 328     }
 329
 330     void refreshCurrentUsername() throws IOException, BaseUsernameException {
 331         context.getAccountHelper().refreshCurrentUsername();
 332     }
 333
 334     @Override
 335     public String setUsername(final String username) throws IOException, InvalidUsernameException {
 336         try {
 337             return context.getAccountHelper().reserveUsername(username);
 338         } catch (BaseUsernameException e) {
 339             throw new InvalidUsernameException(e.getMessage() + " (" + e.getClass().getSimpleName() + ")", e);
 340         }
 341     }
 342
 343     @Override
 344     public void deleteUsername() throws IOException {
 345         context.getAccountHelper().deleteUsername();
 346     }
 347
 348     @Override
 349     public void startChangeNumber(
 350             String newNumber, boolean voiceVerification, String captcha
 351     ) throws RateLimitException, IOException, CaptchaRequiredException, NonNormalizedPhoneNumberException, NotPrimaryDeviceException {
 352         if (!account.isPrimaryDevice()) {
 353             throw new NotPrimaryDeviceException();
 354         }
 355         context.getAccountHelper().startChangeNumber(newNumber, voiceVerification, captcha);
 356     }
 357
 358     @Override
 359     public void finishChangeNumber(
 360             String newNumber, String verificationCode, String pin
 361     ) throws IncorrectPinException, PinLockedException, IOException, NotPrimaryDeviceException {
 362         if (!account.isPrimaryDevice()) {
 363             throw new NotPrimaryDeviceException();
 364         }
 365         context.getAccountHelper().finishChangeNumber(newNumber, verificationCode, pin);
 366     }
 367
 368     @Override
 369     public void unregister() throws IOException {
 370         context.getAccountHelper().unregister();
 371     }
 372
 373     @Override
 374     public void deleteAccount() throws IOException {
 375         context.getAccountHelper().deleteAccount();
 376     }
 377
 378     @Override
 379     public void submitRateLimitRecaptchaChallenge(String challenge, String captcha) throws IOException {
 380         captcha = captcha == null ? null : captcha.replace("signalcaptcha://", "");
 381
 382         dependencies.getAccountManager().submitRateLimitRecaptchaChallenge(challenge, captcha);
 383     }
 384
 385     @Override
 386     public List<Device> getLinkedDevices() throws IOException {
 387         var devices = dependencies.getAccountManager().getDevices();
 388         account.setMultiDevice(devices.size() > 1);
 389         var identityKey = account.getAciIdentityKeyPair().getPrivateKey();
 390         return devices.stream().map(d -> {
 391             String deviceName = d.getName();
 392             if (deviceName != null) {
 393                 try {
 394                     deviceName = DeviceNameUtil.decryptDeviceName(deviceName, identityKey);
 395                 } catch (IOException e) {
 396                     logger.debug("Failed to decrypt device name, maybe plain text?", e);
 397                 }
 398             }
 399             return new Device(d.getId(),
 400                     deviceName,
 401                     d.getCreated(),
 402                     d.getLastSeen(),
 403                     d.getId() == account.getDeviceId());
 404         }).toList();
 405     }
 406
 407     @Override
 408     public void removeLinkedDevices(int deviceId) throws IOException {
 409         context.getAccountHelper().removeLinkedDevices(deviceId);
 410     }
 411
 412     @Override
 413     public void addDeviceLink(DeviceLinkUrl linkUrl) throws IOException, InvalidDeviceLinkException, NotPrimaryDeviceException {
 414         if (!account.isPrimaryDevice()) {
 415             throw new NotPrimaryDeviceException();
 416         }
 417         context.getAccountHelper().addDevice(linkUrl);
 418     }
 419
 420     @Override
 421     public void setRegistrationLockPin(Optional<String> pin) throws IOException, NotPrimaryDeviceException {
 422         if (!account.isPrimaryDevice()) {
 423             throw new NotPrimaryDeviceException();
 424         }
 425         if (pin.isPresent()) {
 426             context.getAccountHelper().setRegistrationPin(pin.get());
 427         } else {
 428             context.getAccountHelper().removeRegistrationPin();
 429         }
 430     }
 431
 432     void refreshPreKeys() throws IOException {
 433         context.getPreKeyHelper().refreshPreKeysIfNecessary();
 434     }
 435
 436     @Override
 437     public List<Group> getGroups() {
 438         return account.getGroupStore().getGroups().stream().map(this::toGroup).toList();
 439     }
 440
 441     private Group toGroup(final GroupInfo groupInfo) {
 442         if (groupInfo == null) {
 443             return null;
 444         }
 445
 446         return Group.from(groupInfo, account.getRecipientAddressResolver(), account.getSelfRecipientId());
 447     }
 448
 449     @Override
 450     public SendGroupMessageResults quitGroup(
 451             GroupId groupId, Set<RecipientIdentifier.Single> groupAdmins
 452     ) throws GroupNotFoundException, IOException, NotAGroupMemberException, LastGroupAdminException, UnregisteredRecipientException {
 453         final var newAdmins = context.getRecipientHelper().resolveRecipients(groupAdmins);
 454         return context.getGroupHelper().quitGroup(groupId, newAdmins);
 455     }
 456
 457     @Override
 458     public void deleteGroup(GroupId groupId) throws IOException {
 459         final var group = context.getGroupHelper().getGroup(groupId);
 460         if (group.isMember(account.getSelfRecipientId())) {
 461             throw new IOException(
 462                     "The local group information cannot be removed, as the user is still a member of the group");
 463         }
 464         context.getGroupHelper().deleteGroup(groupId);
 465     }
 466
 467     @Override
 468     public Pair<GroupId, SendGroupMessageResults> createGroup(
 469             String name, Set<RecipientIdentifier.Single> members, String avatarFile
 470     ) throws IOException, AttachmentInvalidException, UnregisteredRecipientException {
 471         return context.getGroupHelper()
 472                 .createGroup(name,
 473                         members == null ? null : context.getRecipientHelper().resolveRecipients(members),
 474                         avatarFile);
 475     }
 476
 477     @Override
 478     public SendGroupMessageResults updateGroup(
 479             final GroupId groupId, final UpdateGroup updateGroup
 480     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException, GroupSendingNotAllowedException, UnregisteredRecipientException {
 481         return context.getGroupHelper()
 482                 .updateGroup(groupId,
 483                         updateGroup.getName(),
 484                         updateGroup.getDescription(),
 485                         updateGroup.getMembers() == null
 486                                 ? null
 487                                 : context.getRecipientHelper().resolveRecipients(updateGroup.getMembers()),
 488                         updateGroup.getRemoveMembers() == null
 489                                 ? null
 490                                 : context.getRecipientHelper().resolveRecipients(updateGroup.getRemoveMembers()),
 491                         updateGroup.getAdmins() == null
 492                                 ? null
 493                                 : context.getRecipientHelper().resolveRecipients(updateGroup.getAdmins()),
 494                         updateGroup.getRemoveAdmins() == null
 495                                 ? null
 496                                 : context.getRecipientHelper().resolveRecipients(updateGroup.getRemoveAdmins()),
 497                         updateGroup.getBanMembers() == null
 498                                 ? null
 499                                 : context.getRecipientHelper().resolveRecipients(updateGroup.getBanMembers()),
 500                         updateGroup.getUnbanMembers() == null
 501                                 ? null
 502                                 : context.getRecipientHelper().resolveRecipients(updateGroup.getUnbanMembers()),
 503                         updateGroup.isResetGroupLink(),
 504                         updateGroup.getGroupLinkState(),
 505                         updateGroup.getAddMemberPermission(),
 506                         updateGroup.getEditDetailsPermission(),
 507                         updateGroup.getAvatarFile(),
 508                         updateGroup.getExpirationTimer(),
 509                         updateGroup.getIsAnnouncementGroup());
 510     }
 511
 512     @Override
 513     public Pair<GroupId, SendGroupMessageResults> joinGroup(
 514             GroupInviteLinkUrl inviteLinkUrl
 515     ) throws IOException, InactiveGroupLinkException, PendingAdminApprovalException {
 516         return context.getGroupHelper().joinGroup(inviteLinkUrl);
 517     }
 518
 519     private SendMessageResults sendMessage(
 520             SignalServiceDataMessage.Builder messageBuilder, Set<RecipientIdentifier> recipients
 521     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 522         return sendMessage(messageBuilder, recipients, Optional.empty());
 523     }
 524
 525     private SendMessageResults sendMessage(
 526             SignalServiceDataMessage.Builder messageBuilder,
 527             Set<RecipientIdentifier> recipients,
 528             Optional<Long> editTargetTimestamp
 529     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 530         var results = new HashMap<RecipientIdentifier, List<SendMessageResult>>();
 531         long timestamp = System.currentTimeMillis();
 532         messageBuilder.withTimestamp(timestamp);
 533         for (final var recipient : recipients) {
 534             if (recipient instanceof RecipientIdentifier.Single single) {
 535                 try {
 536                     final var recipientId = context.getRecipientHelper().resolveRecipient(single);
 537                     final var result = context.getSendHelper()
 538                             .sendMessage(messageBuilder, recipientId, editTargetTimestamp);
 539                     results.put(recipient, List.of(toSendMessageResult(result)));
 540                 } catch (UnregisteredRecipientException e) {
 541                     results.put(recipient,
 542                             List.of(SendMessageResult.unregisteredFailure(single.toPartialRecipientAddress())));
 543                 }
 544             } else if (recipient instanceof RecipientIdentifier.NoteToSelf) {
 545                 final var result = context.getSendHelper().sendSelfMessage(messageBuilder, editTargetTimestamp);
 546                 results.put(recipient, List.of(toSendMessageResult(result)));
 547             } else if (recipient instanceof RecipientIdentifier.Group group) {
 548                 final var result = context.getSendHelper()
 549                         .sendAsGroupMessage(messageBuilder, group.groupId(), editTargetTimestamp);
 550                 results.put(recipient, result.stream().map(this::toSendMessageResult).toList());
 551             }
 552         }
 553         return new SendMessageResults(timestamp, results);
 554     }
 555
 556     private SendMessageResult toSendMessageResult(final org.whispersystems.signalservice.api.messages.SendMessageResult result) {
 557         return SendMessageResult.from(result, account.getRecipientResolver(), account.getRecipientAddressResolver());
 558     }
 559
 560     private SendMessageResults sendTypingMessage(
 561             SignalServiceTypingMessage.Action action, Set<RecipientIdentifier> recipients
 562     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 563         var results = new HashMap<RecipientIdentifier, List<SendMessageResult>>();
 564         final var timestamp = System.currentTimeMillis();
 565         for (var recipient : recipients) {
 566             if (recipient instanceof RecipientIdentifier.Single single) {
 567                 final var message = new SignalServiceTypingMessage(action, timestamp, Optional.empty());
 568                 try {
 569                     final var recipientId = context.getRecipientHelper().resolveRecipient(single);
 570                     final var result = context.getSendHelper().sendTypingMessage(message, recipientId);
 571                     results.put(recipient, List.of(toSendMessageResult(result)));
 572                 } catch (UnregisteredRecipientException e) {
 573                     results.put(recipient,
 574                             List.of(SendMessageResult.unregisteredFailure(single.toPartialRecipientAddress())));
 575                 }
 576             } else if (recipient instanceof RecipientIdentifier.Group) {
 577                 final var groupId = ((RecipientIdentifier.Group) recipient).groupId();
 578                 final var message = new SignalServiceTypingMessage(action, timestamp, Optional.of(groupId.serialize()));
 579                 final var result = context.getSendHelper().sendGroupTypingMessage(message, groupId);
 580                 results.put(recipient, result.stream().map(this::toSendMessageResult).toList());
 581             }
 582         }
 583         return new SendMessageResults(timestamp, results);
 584     }
 585
 586     @Override
 587     public SendMessageResults sendTypingMessage(
 588             TypingAction action, Set<RecipientIdentifier> recipients
 589     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 590         return sendTypingMessage(action.toSignalService(), recipients);
 591     }
 592
 593     @Override
 594     public SendMessageResults sendReadReceipt(
 595             RecipientIdentifier.Single sender, List<Long> messageIds
 596     ) {
 597         final var timestamp = System.currentTimeMillis();
 598         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.READ,
 599                 messageIds,
 600                 timestamp);
 601
 602         return sendReceiptMessage(sender, timestamp, receiptMessage);
 603     }
 604
 605     @Override
 606     public SendMessageResults sendViewedReceipt(
 607             RecipientIdentifier.Single sender, List<Long> messageIds
 608     ) {
 609         final var timestamp = System.currentTimeMillis();
 610         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.VIEWED,
 611                 messageIds,
 612                 timestamp);
 613
 614         return sendReceiptMessage(sender, timestamp, receiptMessage);
 615     }
 616
 617     private SendMessageResults sendReceiptMessage(
 618             final RecipientIdentifier.Single sender,
 619             final long timestamp,
 620             final SignalServiceReceiptMessage receiptMessage
 621     ) {
 622         try {
 623             final var result = context.getSendHelper()
 624                     .sendReceiptMessage(receiptMessage, context.getRecipientHelper().resolveRecipient(sender));
 625             return new SendMessageResults(timestamp, Map.of(sender, List.of(toSendMessageResult(result))));
 626         } catch (UnregisteredRecipientException e) {
 627             return new SendMessageResults(timestamp,
 628                     Map.of(sender, List.of(SendMessageResult.unregisteredFailure(sender.toPartialRecipientAddress()))));
 629         }
 630     }
 631
 632     @Override
 633     public SendMessageResults sendMessage(
 634             Message message, Set<RecipientIdentifier> recipients
 635     ) throws IOException, AttachmentInvalidException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException, UnregisteredRecipientException, InvalidStickerException {
 636         final var selfProfile = context.getProfileHelper().getSelfProfile();
 637         if (selfProfile == null || selfProfile.getDisplayName().isEmpty()) {
 638             logger.warn(
 639                     "No profile name set. When sending a message it's recommended to set a profile name with the updateProfile command. This may become mandatory in the future.");
 640         }
 641         final var messageBuilder = SignalServiceDataMessage.newBuilder();
 642         applyMessage(messageBuilder, message);
 643         return sendMessage(messageBuilder, recipients);
 644     }
 645
 646     @Override
 647     public SendMessageResults sendEditMessage(
 648             Message message, Set<RecipientIdentifier> recipients, long editTargetTimestamp
 649     ) throws IOException, AttachmentInvalidException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException, UnregisteredRecipientException, InvalidStickerException {
 650         final var messageBuilder = SignalServiceDataMessage.newBuilder();
 651         applyMessage(messageBuilder, message);
 652         return sendMessage(messageBuilder, recipients, Optional.of(editTargetTimestamp));
 653     }
 654
 655     private void applyMessage(
 656             final SignalServiceDataMessage.Builder messageBuilder, final Message message
 657     ) throws AttachmentInvalidException, IOException, UnregisteredRecipientException, InvalidStickerException {
 658         if (message.messageText().length() > 2000) {
 659             final var messageBytes = message.messageText().getBytes(StandardCharsets.UTF_8);
 660             final var textAttachment = AttachmentUtils.createAttachmentStream(new StreamDetails(new ByteArrayInputStream(
 661                     messageBytes), MimeUtils.LONG_TEXT, messageBytes.length), Optional.empty());
 662             messageBuilder.withBody(message.messageText().substring(0, 2000));
 663             messageBuilder.withAttachment(context.getAttachmentHelper().uploadAttachment(textAttachment));
 664         } else {
 665             messageBuilder.withBody(message.messageText());
 666         }
 667         if (!message.attachments().isEmpty()) {
 668             messageBuilder.withAttachments(context.getAttachmentHelper().uploadAttachments(message.attachments()));
 669         }
 670         if (!message.mentions().isEmpty()) {
 671             messageBuilder.withMentions(resolveMentions(message.mentions()));
 672         }
 673         if (!message.textStyles().isEmpty()) {
 674             messageBuilder.withBodyRanges(message.textStyles().stream().map(TextStyle::toBodyRange).toList());
 675         }
 676         if (message.quote().isPresent()) {
 677             final var quote = message.quote().get();
 678             final var quotedAttachments = new ArrayList<SignalServiceDataMessage.Quote.QuotedAttachment>();
 679             for (final var a : quote.attachments()) {
 680                 final var quotedAttachment = new SignalServiceDataMessage.Quote.QuotedAttachment(a.contentType(),
 681                         a.filename(),
 682                         a.preview() == null ? null : context.getAttachmentHelper().uploadAttachment(a.preview()));
 683                 quotedAttachments.add(quotedAttachment);
 684             }
 685             messageBuilder.withQuote(new SignalServiceDataMessage.Quote(quote.timestamp(),
 686                     context.getRecipientHelper()
 687                             .resolveSignalServiceAddress(context.getRecipientHelper().resolveRecipient(quote.author()))
 688                             .getServiceId(),
 689                     quote.message(),
 690                     quotedAttachments,
 691                     resolveMentions(quote.mentions()),
 692                     SignalServiceDataMessage.Quote.Type.NORMAL,
 693                     quote.textStyles().stream().map(TextStyle::toBodyRange).toList()));
 694         }
 695         if (message.sticker().isPresent()) {
 696             final var sticker = message.sticker().get();
 697             final var packId = StickerPackId.deserialize(sticker.packId());
 698             final var stickerId = sticker.stickerId();
 699
 700             final var stickerPack = context.getAccount().getStickerStore().getStickerPack(packId);
 701             if (stickerPack == null) {
 702                 throw new InvalidStickerException("Sticker pack not found");
 703             }
 704             final var manifest = context.getStickerHelper().getOrRetrieveStickerPack(packId, stickerPack.packKey());
 705             if (manifest.stickers().size() <= stickerId) {
 706                 throw new InvalidStickerException("Sticker id not part of this pack");
 707             }
 708             final var manifestSticker = manifest.stickers().get(stickerId);
 709             final var streamDetails = context.getStickerPackStore().retrieveSticker(packId, stickerId);
 710             if (streamDetails == null) {
 711                 throw new InvalidStickerException("Missing local sticker file");
 712             }
 713             messageBuilder.withSticker(new SignalServiceDataMessage.Sticker(packId.serialize(),
 714                     stickerPack.packKey(),
 715                     stickerId,
 716                     manifestSticker.emoji(),
 717                     AttachmentUtils.createAttachmentStream(streamDetails, Optional.empty())));
 718         }
 719         if (!message.previews().isEmpty()) {
 720             final var previews = new ArrayList<SignalServicePreview>(message.previews().size());
 721             for (final var p : message.previews()) {
 722                 final var image = p.image().isPresent() ? context.getAttachmentHelper()
 723                         .uploadAttachment(p.image().get()) : null;
 724                 previews.add(new SignalServicePreview(p.url(),
 725                         p.title(),
 726                         p.description(),
 727                         0,
 728                         Optional.ofNullable(image)));
 729             }
 730             messageBuilder.withPreviews(previews);
 731         }
 732         if (message.storyReply().isPresent()) {
 733             final var storyReply = message.storyReply().get();
 734             final var authorServiceId = context.getRecipientHelper()
 735                     .resolveSignalServiceAddress(context.getRecipientHelper().resolveRecipient(storyReply.author()))
 736                     .getServiceId();
 737             messageBuilder.withStoryContext(new SignalServiceDataMessage.StoryContext(authorServiceId,
 738                     storyReply.timestamp()));
 739         }
 740     }
 741
 742     private ArrayList<SignalServiceDataMessage.Mention> resolveMentions(final List<Message.Mention> mentionList) throws UnregisteredRecipientException {
 743         final var mentions = new ArrayList<SignalServiceDataMessage.Mention>();
 744         for (final var m : mentionList) {
 745             final var recipientId = context.getRecipientHelper().resolveRecipient(m.recipient());
 746             mentions.add(new SignalServiceDataMessage.Mention(context.getRecipientHelper()
 747                     .resolveSignalServiceAddress(recipientId)
 748                     .getServiceId(), m.start(), m.length()));
 749         }
 750         return mentions;
 751     }
 752
 753     @Override
 754     public SendMessageResults sendRemoteDeleteMessage(
 755             long targetSentTimestamp, Set<RecipientIdentifier> recipients
 756     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 757         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
 758         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
 759         for (final var recipient : recipients) {
 760             if (recipient instanceof RecipientIdentifier.Uuid u) {
 761                 account.getMessageSendLogStore()
 762                         .deleteEntryForRecipientNonGroup(targetSentTimestamp, ACI.from(u.uuid()));
 763             } else if (recipient instanceof RecipientIdentifier.Single r) {
 764                 try {
 765                     final var recipientId = context.getRecipientHelper().resolveRecipient(r);
 766                     final var address = account.getRecipientAddressResolver().resolveRecipientAddress(recipientId);
 767                     if (address.serviceId().isPresent()) {
 768                         account.getMessageSendLogStore()
 769                                 .deleteEntryForRecipientNonGroup(targetSentTimestamp, address.serviceId().get());
 770                     }
 771                 } catch (UnregisteredRecipientException ignored) {
 772                 }
 773             } else if (recipient instanceof RecipientIdentifier.Group r) {
 774                 account.getMessageSendLogStore().deleteEntryForGroup(targetSentTimestamp, r.groupId());
 775             }
 776         }
 777         return sendMessage(messageBuilder, recipients);
 778     }
 779
 780     @Override
 781     public SendMessageResults sendMessageReaction(
 782             String emoji,
 783             boolean remove,
 784             RecipientIdentifier.Single targetAuthor,
 785             long targetSentTimestamp,
 786             Set<RecipientIdentifier> recipients,
 787             final boolean isStory
 788     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException, UnregisteredRecipientException {
 789         var targetAuthorRecipientId = context.getRecipientHelper().resolveRecipient(targetAuthor);
 790         final var authorServiceId = context.getRecipientHelper()
 791                 .resolveSignalServiceAddress(targetAuthorRecipientId)
 792                 .getServiceId();
 793         var reaction = new SignalServiceDataMessage.Reaction(emoji, remove, authorServiceId, targetSentTimestamp);
 794         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
 795         if (isStory) {
 796             messageBuilder.withStoryContext(new SignalServiceDataMessage.StoryContext(authorServiceId,
 797                     targetSentTimestamp));
 798         }
 799         return sendMessage(messageBuilder, recipients);
 800     }
 801
 802     @Override
 803     public SendMessageResults sendPaymentNotificationMessage(
 804             byte[] receipt, String note, RecipientIdentifier.Single recipient
 805     ) throws IOException {
 806         final var paymentNotification = new SignalServiceDataMessage.PaymentNotification(receipt, note);
 807         final var payment = new SignalServiceDataMessage.Payment(paymentNotification, null);
 808         final var messageBuilder = SignalServiceDataMessage.newBuilder().withPayment(payment);
 809         try {
 810             return sendMessage(messageBuilder, Set.of(recipient));
 811         } catch (NotAGroupMemberException | GroupNotFoundException | GroupSendingNotAllowedException e) {
 812             throw new AssertionError(e);
 813         }
 814     }
 815
 816     @Override
 817     public SendMessageResults sendEndSessionMessage(Set<RecipientIdentifier.Single> recipients) throws IOException {
 818         var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
 819
 820         try {
 821             return sendMessage(messageBuilder,
 822                     recipients.stream().map(RecipientIdentifier.class::cast).collect(Collectors.toSet()));
 823         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 824             throw new AssertionError(e);
 825         } finally {
 826             for (var recipient : recipients) {
 827                 final RecipientId recipientId;
 828                 try {
 829                     recipientId = context.getRecipientHelper().resolveRecipient(recipient);
 830                 } catch (UnregisteredRecipientException e) {
 831                     continue;
 832                 }
 833                 final var serviceId = context.getAccount()
 834                         .getRecipientAddressResolver()
 835                         .resolveRecipientAddress(recipientId)
 836                         .serviceId();
 837                 if (serviceId.isPresent()) {
 838                     account.getAccountData(ServiceIdType.ACI).getSessionStore().deleteAllSessions(serviceId.get());
 839                 }
 840             }
 841         }
 842     }
 843
 844     @Override
 845     public void hideRecipient(final RecipientIdentifier.Single recipient) {
 846         final var recipientIdOptional = context.getRecipientHelper().resolveRecipientOptional(recipient);
 847         if (recipientIdOptional.isPresent()) {
 848             context.getContactHelper().setContactHidden(recipientIdOptional.get(), true);
 849             account.removeRecipient(recipientIdOptional.get());
 850         }
 851     }
 852
 853     @Override
 854     public void deleteRecipient(final RecipientIdentifier.Single recipient) {
 855         final var recipientIdOptional = context.getRecipientHelper().resolveRecipientOptional(recipient);
 856         if (recipientIdOptional.isPresent()) {
 857             account.removeRecipient(recipientIdOptional.get());
 858         }
 859     }
 860
 861     @Override
 862     public void deleteContact(final RecipientIdentifier.Single recipient) {
 863         final var recipientIdOptional = context.getRecipientHelper().resolveRecipientOptional(recipient);
 864         if (recipientIdOptional.isPresent()) {
 865             account.getContactStore().deleteContact(recipientIdOptional.get());
 866         }
 867     }
 868
 869     @Override
 870     public void setContactName(
 871             RecipientIdentifier.Single recipient, String givenName, final String familyName
 872     ) throws NotPrimaryDeviceException, UnregisteredRecipientException {
 873         if (!account.isPrimaryDevice()) {
 874             throw new NotPrimaryDeviceException();
 875         }
 876         context.getContactHelper()
 877                 .setContactName(context.getRecipientHelper().resolveRecipient(recipient), givenName, familyName);
 878     }
 879
 880     @Override
 881     public void setContactsBlocked(
 882             Collection<RecipientIdentifier.Single> recipients, boolean blocked
 883     ) throws NotPrimaryDeviceException, IOException, UnregisteredRecipientException {
 884         if (!account.isPrimaryDevice()) {
 885             throw new NotPrimaryDeviceException();
 886         }
 887         if (recipients.isEmpty()) {
 888             return;
 889         }
 890         final var recipientIds = context.getRecipientHelper().resolveRecipients(recipients);
 891         final var selfRecipientId = account.getSelfRecipientId();
 892         boolean shouldRotateProfileKey = false;
 893         for (final var recipientId : recipientIds) {
 894             if (context.getContactHelper().isContactBlocked(recipientId) == blocked) {
 895                 continue;
 896             }
 897             context.getContactHelper().setContactBlocked(recipientId, blocked);
 898             // if we don't have a common group with the blocked contact we need to rotate the profile key
 899             shouldRotateProfileKey = blocked && (
 900                     shouldRotateProfileKey || account.getGroupStore()
 901                             .getGroups()
 902                             .stream()
 903                             .noneMatch(g -> g.isMember(selfRecipientId) && g.isMember(recipientId))
 904             );
 905         }
 906         if (shouldRotateProfileKey) {
 907             context.getProfileHelper().rotateProfileKey();
 908         }
 909         context.getSyncHelper().sendBlockedList();
 910     }
 911
 912     @Override
 913     public void setGroupsBlocked(
 914             final Collection<GroupId> groupIds, final boolean blocked
 915     ) throws GroupNotFoundException, NotPrimaryDeviceException, IOException {
 916         if (!account.isPrimaryDevice()) {
 917             throw new NotPrimaryDeviceException();
 918         }
 919         if (groupIds.isEmpty()) {
 920             return;
 921         }
 922         boolean shouldRotateProfileKey = false;
 923         for (final var groupId : groupIds) {
 924             if (context.getGroupHelper().isGroupBlocked(groupId) == blocked) {
 925                 continue;
 926             }
 927             context.getGroupHelper().setGroupBlocked(groupId, blocked);
 928             shouldRotateProfileKey = blocked;
 929         }
 930         if (shouldRotateProfileKey) {
 931             context.getProfileHelper().rotateProfileKey();
 932         }
 933         context.getSyncHelper().sendBlockedList();
 934     }
 935
 936     @Override
 937     public void setExpirationTimer(
 938             RecipientIdentifier.Single recipient, int messageExpirationTimer
 939     ) throws IOException, UnregisteredRecipientException {
 940         var recipientId = context.getRecipientHelper().resolveRecipient(recipient);
 941         context.getContactHelper().setExpirationTimer(recipientId, messageExpirationTimer);
 942         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
 943         try {
 944             sendMessage(messageBuilder, Set.of(recipient));
 945         } catch (NotAGroupMemberException | GroupNotFoundException | GroupSendingNotAllowedException e) {
 946             throw new AssertionError(e);
 947         }
 948     }
 949
 950     @Override
 951     public StickerPackUrl uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
 952         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
 953
 954         var messageSender = dependencies.getMessageSender();
 955
 956         var packKey = KeyUtils.createStickerUploadKey();
 957         var packIdString = messageSender.uploadStickerManifest(manifest, packKey);
 958         var packId = StickerPackId.deserialize(Hex.fromStringCondensed(packIdString));
 959
 960         var sticker = new StickerPack(packId, packKey);
 961         account.getStickerStore().addStickerPack(sticker);
 962         context.getSyncHelper().sendStickerOperationsMessage(List.of(sticker), List.of());
 963
 964         return new StickerPackUrl(packId, packKey);
 965     }
 966
 967     @Override
 968     public void installStickerPack(StickerPackUrl url) throws IOException {
 969         final var packId = url.packId();
 970         final var packKey = url.packKey();
 971         try {
 972             context.getStickerHelper().retrieveStickerPack(packId, packKey);
 973         } catch (InvalidMessageException e) {
 974             throw new IOException(e);
 975         }
 976
 977         final var sticker = context.getStickerHelper().addOrUpdateStickerPack(packId, packKey, true);
 978         context.getSyncHelper().sendStickerOperationsMessage(List.of(sticker), List.of());
 979     }
 980
 981     @Override
 982     public List<org.asamk.signal.manager.api.StickerPack> getStickerPacks() {
 983         final var stickerPackStore = context.getStickerPackStore();
 984         return account.getStickerStore().getStickerPacks().stream().map(pack -> {
 985             if (stickerPackStore.existsStickerPack(pack.packId())) {
 986                 try {
 987                     final var manifest = stickerPackStore.retrieveManifest(pack.packId());
 988                     return new org.asamk.signal.manager.api.StickerPack(pack.packId(),
 989                             new StickerPackUrl(pack.packId(), pack.packKey()),
 990                             pack.isInstalled(),
 991                             manifest.title(),
 992                             manifest.author(),
 993                             Optional.ofNullable(manifest.cover() == null ? null : manifest.cover().toApi()),
 994                             manifest.stickers().stream().map(JsonStickerPack.JsonSticker::toApi).toList());
 995                 } catch (Exception e) {
 996                     logger.warn("Failed to read local sticker pack manifest: {}", e.getMessage(), e);
 997                 }
 998             }
 999
1000             return new org.asamk.signal.manager.api.StickerPack(pack.packId(), pack.packKey(), pack.isInstalled());
1001         }).toList();
1002     }
1003
1004     @Override
1005     public void requestAllSyncData() throws IOException {
1006         context.getSyncHelper().requestAllSyncData();
1007         retrieveRemoteStorage();
1008     }
1009
1010     void retrieveRemoteStorage() throws IOException {
1011         context.getStorageHelper().readDataFromStorage();
1012     }
1013
1014     @Override
1015     public void addReceiveHandler(final ReceiveMessageHandler handler, final boolean isWeakListener) {
1016         synchronized (messageHandlers) {
1017             if (isWeakListener) {
1018                 weakHandlers.add(handler);
1019             } else {
1020                 messageHandlers.add(handler);
1021                 startReceiveThreadIfRequired();
1022             }
1023         }
1024     }
1025
1026     private static final AtomicInteger threadNumber = new AtomicInteger(0);
1027
1028     private void startReceiveThreadIfRequired() {
1029         if (receiveThread != null || isReceivingSynchronous) {
1030             return;
1031         }
1032         receiveThread = Thread.ofPlatform().name("receive-" + threadNumber.getAndIncrement()).start(() -> {
1033             logger.debug("Starting receiving messages");
1034             context.getReceiveHelper().receiveMessagesContinuously(this::passReceivedMessageToHandlers);
1035             logger.debug("Finished receiving messages");
1036             synchronized (messageHandlers) {
1037                 receiveThread = null;
1038
1039                 // Check if in the meantime another handler has been registered
1040                 if (!messageHandlers.isEmpty()) {
1041                     logger.debug("Another handler has been registered, starting receive thread again");
1042                     startReceiveThreadIfRequired();
1043                 }
1044             }
1045         });
1046     }
1047
1048     private void passReceivedMessageToHandlers(MessageEnvelope envelope, Throwable e) {
1049         synchronized (messageHandlers) {
1050             Stream.concat(messageHandlers.stream(), weakHandlers.stream()).forEach(h -> {
1051                 try {
1052                     h.handleMessage(envelope, e);
1053                 } catch (Throwable ex) {
1054                     logger.warn("Message handler failed, ignoring", ex);
1055                 }
1056             });
1057         }
1058     }
1059
1060     @Override
1061     public void removeReceiveHandler(final ReceiveMessageHandler handler) {
1062         final Thread thread;
1063         synchronized (messageHandlers) {
1064             weakHandlers.remove(handler);
1065             messageHandlers.remove(handler);
1066             if (!messageHandlers.isEmpty() || receiveThread == null || isReceivingSynchronous) {
1067                 return;
1068             }
1069             thread = receiveThread;
1070             receiveThread = null;
1071         }
1072
1073         stopReceiveThread(thread);
1074     }
1075
1076     private void stopReceiveThread(final Thread thread) {
1077         if (context.getReceiveHelper().requestStopReceiveMessages()) {
1078             logger.debug("Receive stop requested, interrupting read from server.");
1079             thread.interrupt();
1080         }
1081         try {
1082             thread.join();
1083         } catch (InterruptedException ignored) {
1084         }
1085     }
1086
1087     @Override
1088     public boolean isReceiving() {
1089         if (isReceivingSynchronous) {
1090             return true;
1091         }
1092         synchronized (messageHandlers) {
1093             return !messageHandlers.isEmpty();
1094         }
1095     }
1096
1097     @Override
1098     public void receiveMessages(
1099             Optional<Duration> timeout, Optional<Integer> maxMessages, ReceiveMessageHandler handler
1100     ) throws IOException, AlreadyReceivingException {
1101         receiveMessages(timeout.orElse(Duration.ofMinutes(1)), timeout.isPresent(), maxMessages.orElse(null), handler);
1102     }
1103
1104     @Override
1105     public void stopReceiveMessages() {
1106         Thread thread = null;
1107         synchronized (messageHandlers) {
1108             if (isReceivingSynchronous) {
1109                 thread = receiveThread;
1110                 receiveThread = null;
1111             }
1112         }
1113         if (thread != null) {
1114             stopReceiveThread(thread);
1115         }
1116     }
1117
1118     private void receiveMessages(
1119             Duration timeout, boolean returnOnTimeout, Integer maxMessages, ReceiveMessageHandler handler
1120     ) throws IOException, AlreadyReceivingException {
1121         synchronized (messageHandlers) {
1122             if (isReceiving()) {
1123                 throw new AlreadyReceivingException("Already receiving message.");
1124             }
1125             isReceivingSynchronous = true;
1126             receiveThread = Thread.currentThread();
1127         }
1128         try {
1129             context.getReceiveHelper().receiveMessages(timeout, returnOnTimeout, maxMessages, (envelope, e) -> {
1130                 passReceivedMessageToHandlers(envelope, e);
1131                 handler.handleMessage(envelope, e);
1132             });
1133         } finally {
1134             synchronized (messageHandlers) {
1135                 receiveThread = null;
1136                 isReceivingSynchronous = false;
1137                 if (!messageHandlers.isEmpty()) {
1138                     startReceiveThreadIfRequired();
1139                 }
1140             }
1141         }
1142     }
1143
1144     @Override
1145     public void setReceiveConfig(final ReceiveConfig receiveConfig) {
1146         context.getReceiveHelper().setReceiveConfig(receiveConfig);
1147     }
1148
1149     @Override
1150     public boolean isContactBlocked(final RecipientIdentifier.Single recipient) {
1151         final RecipientId recipientId;
1152         try {
1153             recipientId = context.getRecipientHelper().resolveRecipient(recipient);
1154         } catch (UnregisteredRecipientException e) {
1155             return false;
1156         }
1157         return context.getContactHelper().isContactBlocked(recipientId);
1158     }
1159
1160     @Override
1161     public void sendContacts() throws IOException {
1162         context.getSyncHelper().sendContacts();
1163     }
1164
1165     @Override
1166     public List<Recipient> getRecipients(
1167             boolean onlyContacts,
1168             Optional<Boolean> blocked,
1169             Collection<RecipientIdentifier.Single> recipients,
1170             Optional<String> name
1171     ) {
1172         final var recipientIds = recipients.stream().map(a -> {
1173             try {
1174                 return context.getRecipientHelper().resolveRecipient(a);
1175             } catch (UnregisteredRecipientException e) {
1176                 return null;
1177             }
1178         }).filter(Objects::nonNull).collect(Collectors.toSet());
1179         if (!recipients.isEmpty() && recipientIds.isEmpty()) {
1180             return List.of();
1181         }
1182         // refresh profiles of explicitly given recipients
1183         context.getProfileHelper().refreshRecipientProfiles(recipientIds);
1184         return account.getRecipientStore()
1185                 .getRecipients(onlyContacts, blocked, recipientIds, name)
1186                 .stream()
1187                 .map(s -> new Recipient(s.getRecipientId(),
1188                         s.getAddress().toApiRecipientAddress(),
1189                         s.getContact(),
1190                         s.getProfileKey(),
1191                         s.getExpiringProfileKeyCredential(),
1192                         s.getProfile()))
1193                 .toList();
1194     }
1195
1196     @Override
1197     public String getContactOrProfileName(RecipientIdentifier.Single recipient) {
1198         final RecipientId recipientId;
1199         try {
1200             recipientId = context.getRecipientHelper().resolveRecipient(recipient);
1201         } catch (UnregisteredRecipientException e) {
1202             return null;
1203         }
1204
1205         final var contact = account.getContactStore().getContact(recipientId);
1206         if (contact != null && !Util.isEmpty(contact.getName())) {
1207             return contact.getName();
1208         }
1209
1210         final var profile = context.getProfileHelper().getRecipientProfile(recipientId);
1211         if (profile != null) {
1212             return profile.getDisplayName();
1213         }
1214
1215         return null;
1216     }
1217
1218     @Override
1219     public Group getGroup(GroupId groupId) {
1220         return toGroup(context.getGroupHelper().getGroup(groupId));
1221     }
1222
1223     @Override
1224     public List<Identity> getIdentities() {
1225         return account.getIdentityKeyStore()
1226                 .getIdentities()
1227                 .stream()
1228                 .map(this::toIdentity)
1229                 .filter(Objects::nonNull)
1230                 .toList();
1231     }
1232
1233     private Identity toIdentity(final IdentityInfo identityInfo) {
1234         if (identityInfo == null) {
1235             return null;
1236         }
1237
1238         final var address = account.getRecipientAddressResolver()
1239                 .resolveRecipientAddress(account.getRecipientResolver().resolveRecipient(identityInfo.getServiceId()));
1240         if (address.serviceId().isPresent() && !Objects.equals(address.serviceId().get(),
1241                 identityInfo.getServiceId())) {
1242             return null;
1243         }
1244         final var scannableFingerprint = context.getIdentityHelper()
1245                 .computeSafetyNumberForScanning(identityInfo.getServiceId(), identityInfo.getIdentityKey());
1246         return new Identity(address.toApiRecipientAddress(),
1247                 identityInfo.getIdentityKey(),
1248                 context.getIdentityHelper()
1249                         .computeSafetyNumber(identityInfo.getServiceId(), identityInfo.getIdentityKey()),
1250                 scannableFingerprint == null ? null : scannableFingerprint.getSerialized(),
1251                 identityInfo.getTrustLevel(),
1252                 identityInfo.getDateAddedTimestamp());
1253     }
1254
1255     @Override
1256     public List<Identity> getIdentities(RecipientIdentifier.Single recipient) {
1257         ServiceId serviceId;
1258         try {
1259             final var address = account.getRecipientAddressResolver()
1260                     .resolveRecipientAddress(context.getRecipientHelper().resolveRecipient(recipient));
1261             if (address.serviceId().isEmpty()) {
1262                 return List.of();
1263             }
1264             serviceId = address.serviceId().get();
1265         } catch (UnregisteredRecipientException e) {
1266             return List.of();
1267         }
1268         final var identity = account.getIdentityKeyStore().getIdentityInfo(serviceId);
1269         return identity == null ? List.of() : List.of(toIdentity(identity));
1270     }
1271
1272     @Override
1273     public boolean trustIdentityVerified(
1274             RecipientIdentifier.Single recipient, IdentityVerificationCode verificationCode
1275     ) throws UnregisteredRecipientException {
1276         return switch (verificationCode) {
1277             case IdentityVerificationCode.Fingerprint fingerprint -> trustIdentity(recipient,
1278                     r -> context.getIdentityHelper().trustIdentityVerified(r, fingerprint.fingerprint()));
1279             case IdentityVerificationCode.SafetyNumber safetyNumber -> trustIdentity(recipient,
1280                     r -> context.getIdentityHelper().trustIdentityVerifiedSafetyNumber(r, safetyNumber.safetyNumber()));
1281             case IdentityVerificationCode.ScannableSafetyNumber safetyNumber -> trustIdentity(recipient,
1282                     r -> context.getIdentityHelper().trustIdentityVerifiedSafetyNumber(r, safetyNumber.safetyNumber()));
1283             case null, default -> throw new AssertionError("Invalid verification code type");
1284         };
1285     }
1286
1287     @Override
1288     public boolean trustIdentityAllKeys(RecipientIdentifier.Single recipient) throws UnregisteredRecipientException {
1289         return trustIdentity(recipient, r -> context.getIdentityHelper().trustIdentityAllKeys(r));
1290     }
1291
1292     private boolean trustIdentity(
1293             RecipientIdentifier.Single recipient, Function<RecipientId, Boolean> trustMethod
1294     ) throws UnregisteredRecipientException {
1295         final var recipientId = context.getRecipientHelper().resolveRecipient(recipient);
1296         final var updated = trustMethod.apply(recipientId);
1297         if (updated && this.isReceiving()) {
1298             context.getReceiveHelper().setNeedsToRetryFailedMessages(true);
1299         }
1300         return updated;
1301     }
1302
1303     @Override
1304     public void addAddressChangedListener(final Runnable listener) {
1305         synchronized (addressChangedListeners) {
1306             addressChangedListeners.add(listener);
1307         }
1308     }
1309
1310     @Override
1311     public void addClosedListener(final Runnable listener) {
1312         synchronized (closedListeners) {
1313             closedListeners.add(listener);
1314         }
1315     }
1316
1317     @Override
1318     public InputStream retrieveAttachment(final String id) throws IOException {
1319         return context.getAttachmentHelper().retrieveAttachment(id).getStream();
1320     }
1321
1322     @Override
1323     public void close() {
1324         Thread thread;
1325         synchronized (messageHandlers) {
1326             weakHandlers.clear();
1327             messageHandlers.clear();
1328             thread = receiveThread;
1329             receiveThread = null;
1330         }
1331         if (thread != null) {
1332             stopReceiveThread(thread);
1333         }
1334         executor.close();
1335
1336         dependencies.getSignalWebSocket().disconnect();
1337         dependencies.getPushServiceSocket().close();
1338         disposable.dispose();
1339
1340         if (account != null) {
1341             account.close();
1342         }
1343
1344         synchronized (closedListeners) {
1345             closedListeners.forEach(Runnable::run);
1346             closedListeners.clear();
1347         }
1348
1349         account = null;
1350     }
1351 }