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

   1 /*
   2   Copyright (C) 2015-2021 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;
  18
  19 import org.asamk.signal.manager.actions.HandleAction;
  20 import org.asamk.signal.manager.api.Device;
  21 import org.asamk.signal.manager.api.Group;
  22 import org.asamk.signal.manager.api.Identity;
  23 import org.asamk.signal.manager.api.InactiveGroupLinkException;
  24 import org.asamk.signal.manager.api.InvalidDeviceLinkException;
  25 import org.asamk.signal.manager.api.Message;
  26 import org.asamk.signal.manager.api.Pair;
  27 import org.asamk.signal.manager.api.RecipientIdentifier;
  28 import org.asamk.signal.manager.api.SendGroupMessageResults;
  29 import org.asamk.signal.manager.api.SendMessageResults;
  30 import org.asamk.signal.manager.api.TypingAction;
  31 import org.asamk.signal.manager.api.UpdateGroup;
  32 import org.asamk.signal.manager.config.ServiceConfig;
  33 import org.asamk.signal.manager.config.ServiceEnvironmentConfig;
  34 import org.asamk.signal.manager.groups.GroupId;
  35 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  36 import org.asamk.signal.manager.groups.GroupNotFoundException;
  37 import org.asamk.signal.manager.groups.GroupSendingNotAllowedException;
  38 import org.asamk.signal.manager.groups.LastGroupAdminException;
  39 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  40 import org.asamk.signal.manager.helper.AttachmentHelper;
  41 import org.asamk.signal.manager.helper.ContactHelper;
  42 import org.asamk.signal.manager.helper.GroupHelper;
  43 import org.asamk.signal.manager.helper.GroupV2Helper;
  44 import org.asamk.signal.manager.helper.IdentityHelper;
  45 import org.asamk.signal.manager.helper.IncomingMessageHandler;
  46 import org.asamk.signal.manager.helper.PinHelper;
  47 import org.asamk.signal.manager.helper.PreKeyHelper;
  48 import org.asamk.signal.manager.helper.ProfileHelper;
  49 import org.asamk.signal.manager.helper.SendHelper;
  50 import org.asamk.signal.manager.helper.StorageHelper;
  51 import org.asamk.signal.manager.helper.SyncHelper;
  52 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  53 import org.asamk.signal.manager.jobs.Context;
  54 import org.asamk.signal.manager.storage.SignalAccount;
  55 import org.asamk.signal.manager.storage.groups.GroupInfo;
  56 import org.asamk.signal.manager.storage.identities.IdentityInfo;
  57 import org.asamk.signal.manager.storage.messageCache.CachedMessage;
  58 import org.asamk.signal.manager.storage.recipients.Contact;
  59 import org.asamk.signal.manager.storage.recipients.Profile;
  60 import org.asamk.signal.manager.storage.recipients.RecipientAddress;
  61 import org.asamk.signal.manager.storage.recipients.RecipientId;
  62 import org.asamk.signal.manager.storage.stickers.Sticker;
  63 import org.asamk.signal.manager.storage.stickers.StickerPackId;
  64 import org.asamk.signal.manager.util.KeyUtils;
  65 import org.asamk.signal.manager.util.StickerUtils;
  66 import org.slf4j.Logger;
  67 import org.slf4j.LoggerFactory;
  68 import org.whispersystems.libsignal.InvalidKeyException;
  69 import org.whispersystems.libsignal.ecc.ECPublicKey;
  70 import org.whispersystems.libsignal.util.guava.Optional;
  71 import org.whispersystems.signalservice.api.SignalSessionLock;
  72 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  73 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  74 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceTypingMessage;
  77 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  78 import org.whispersystems.signalservice.api.util.DeviceNameUtil;
  79 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  80 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
  81 import org.whispersystems.signalservice.api.websocket.WebSocketUnavailableException;
  82 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
  83 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
  84 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
  85 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
  86 import org.whispersystems.signalservice.internal.util.Hex;
  87 import org.whispersystems.signalservice.internal.util.Util;
  88
  89 import java.io.File;
  90 import java.io.IOException;
  91 import java.net.URI;
  92 import java.net.URISyntaxException;
  93 import java.net.URLEncoder;
  94 import java.nio.charset.StandardCharsets;
  95 import java.security.SignatureException;
  96 import java.util.Collection;
  97 import java.util.HashMap;
  98 import java.util.HashSet;
  99 import java.util.List;
 100 import java.util.Map;
 101 import java.util.Set;
 102 import java.util.UUID;
 103 import java.util.concurrent.ExecutorService;
 104 import java.util.concurrent.Executors;
 105 import java.util.concurrent.TimeUnit;
 106 import java.util.concurrent.TimeoutException;
 107 import java.util.concurrent.locks.ReentrantLock;
 108 import java.util.stream.Collectors;
 109
 110 import static org.asamk.signal.manager.config.ServiceConfig.capabilities;
 111
 112 public class ManagerImpl implements Manager {
 113
 114     private final static Logger logger = LoggerFactory.getLogger(ManagerImpl.class);
 115
 116     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
 117     private final SignalDependencies dependencies;
 118
 119     private SignalAccount account;
 120
 121     private final ExecutorService executor = Executors.newCachedThreadPool();
 122
 123     private final ProfileHelper profileHelper;
 124     private final PinHelper pinHelper;
 125     private final StorageHelper storageHelper;
 126     private final SendHelper sendHelper;
 127     private final SyncHelper syncHelper;
 128     private final AttachmentHelper attachmentHelper;
 129     private final GroupHelper groupHelper;
 130     private final ContactHelper contactHelper;
 131     private final IncomingMessageHandler incomingMessageHandler;
 132     private final PreKeyHelper preKeyHelper;
 133     private final IdentityHelper identityHelper;
 134
 135     private final Context context;
 136     private boolean hasCaughtUpWithOldMessages = false;
 137     private boolean ignoreAttachments = false;
 138
 139     private Thread receiveThread;
 140     private final Set<ReceiveMessageHandler> messageHandlers = new HashSet<>();
 141     private boolean isReceivingSynchronous;
 142
 143     ManagerImpl(
 144             SignalAccount account,
 145             PathConfig pathConfig,
 146             ServiceEnvironmentConfig serviceEnvironmentConfig,
 147             String userAgent
 148     ) {
 149         this.account = account;
 150         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 151
 152         final var credentialsProvider = new DynamicCredentialsProvider(account.getUuid(),
 153                 account.getUsername(),
 154                 account.getPassword(),
 155                 account.getDeviceId());
 156         final var sessionLock = new SignalSessionLock() {
 157             private final ReentrantLock LEGACY_LOCK = new ReentrantLock();
 158
 159             @Override
 160             public Lock acquire() {
 161                 LEGACY_LOCK.lock();
 162                 return LEGACY_LOCK::unlock;
 163             }
 164         };
 165         this.dependencies = new SignalDependencies(serviceEnvironmentConfig,
 166                 userAgent,
 167                 credentialsProvider,
 168                 account.getSignalProtocolStore(),
 169                 executor,
 170                 sessionLock);
 171         final var avatarStore = new AvatarStore(pathConfig.avatarsPath());
 172         final var attachmentStore = new AttachmentStore(pathConfig.attachmentsPath());
 173         final var stickerPackStore = new StickerPackStore(pathConfig.stickerPacksPath());
 174
 175         this.attachmentHelper = new AttachmentHelper(dependencies, attachmentStore);
 176         this.pinHelper = new PinHelper(dependencies.getKeyBackupService());
 177         final var unidentifiedAccessHelper = new UnidentifiedAccessHelper(account,
 178                 dependencies,
 179                 account::getProfileKey,
 180                 this::getRecipientProfile);
 181         this.profileHelper = new ProfileHelper(account,
 182                 dependencies,
 183                 avatarStore,
 184                 unidentifiedAccessHelper::getAccessFor,
 185                 this::resolveSignalServiceAddress);
 186         final GroupV2Helper groupV2Helper = new GroupV2Helper(profileHelper::getRecipientProfileKeyCredential,
 187                 this::getRecipientProfile,
 188                 account::getSelfRecipientId,
 189                 dependencies.getGroupsV2Operations(),
 190                 dependencies.getGroupsV2Api(),
 191                 this::resolveSignalServiceAddress);
 192         this.sendHelper = new SendHelper(account,
 193                 dependencies,
 194                 unidentifiedAccessHelper,
 195                 this::resolveSignalServiceAddress,
 196                 account.getRecipientStore(),
 197                 this::handleIdentityFailure,
 198                 this::getGroupInfo,
 199                 this::refreshRegisteredUser);
 200         this.groupHelper = new GroupHelper(account,
 201                 dependencies,
 202                 attachmentHelper,
 203                 sendHelper,
 204                 groupV2Helper,
 205                 avatarStore,
 206                 this::resolveSignalServiceAddress,
 207                 account.getRecipientStore());
 208         this.storageHelper = new StorageHelper(account, dependencies, groupHelper, profileHelper);
 209         this.contactHelper = new ContactHelper(account);
 210         this.syncHelper = new SyncHelper(account,
 211                 attachmentHelper,
 212                 sendHelper,
 213                 groupHelper,
 214                 avatarStore,
 215                 this::resolveSignalServiceAddress);
 216         preKeyHelper = new PreKeyHelper(account, dependencies);
 217
 218         this.context = new Context(account,
 219                 dependencies,
 220                 stickerPackStore,
 221                 sendHelper,
 222                 groupHelper,
 223                 syncHelper,
 224                 profileHelper,
 225                 storageHelper,
 226                 preKeyHelper);
 227         var jobExecutor = new JobExecutor(context);
 228
 229         this.incomingMessageHandler = new IncomingMessageHandler(account,
 230                 dependencies,
 231                 account.getRecipientStore(),
 232                 this::resolveSignalServiceAddress,
 233                 groupHelper,
 234                 contactHelper,
 235                 attachmentHelper,
 236                 syncHelper,
 237                 this::getRecipientProfile,
 238                 jobExecutor);
 239         this.identityHelper = new IdentityHelper(account,
 240                 dependencies,
 241                 this::resolveSignalServiceAddress,
 242                 syncHelper,
 243                 profileHelper);
 244     }
 245
 246     @Override
 247     public String getSelfNumber() {
 248         return account.getUsername();
 249     }
 250
 251     @Override
 252     public void checkAccountState() throws IOException {
 253         if (account.getLastReceiveTimestamp() == 0) {
 254             logger.info("The Signal protocol expects that incoming messages are regularly received.");
 255         } else {
 256             var diffInMilliseconds = System.currentTimeMillis() - account.getLastReceiveTimestamp();
 257             long days = TimeUnit.DAYS.convert(diffInMilliseconds, TimeUnit.MILLISECONDS);
 258             if (days > 7) {
 259                 logger.warn(
 260                         "Messages have been last received {} days ago. The Signal protocol expects that incoming messages are regularly received.",
 261                         days);
 262             }
 263         }
 264         preKeyHelper.refreshPreKeysIfNecessary();
 265         if (account.getUuid() == null) {
 266             account.setUuid(dependencies.getAccountManager().getOwnUuid());
 267         }
 268         updateAccountAttributes(null);
 269     }
 270
 271     /**
 272      * This is used for checking a set of phone numbers for registration on Signal
 273      *
 274      * @param numbers The set of phone number in question
 275      * @return A map of numbers to canonicalized number and uuid. If a number is not registered the uuid is null.
 276      * @throws IOException if its unable to get the contacts to check if they're registered
 277      */
 278     @Override
 279     public Map<String, Pair<String, UUID>> areUsersRegistered(Set<String> numbers) throws IOException {
 280         Map<String, String> canonicalizedNumbers = numbers.stream().collect(Collectors.toMap(n -> n, n -> {
 281             try {
 282                 return PhoneNumberFormatter.formatNumber(n, account.getUsername());
 283             } catch (InvalidNumberException e) {
 284                 return "";
 285             }
 286         }));
 287
 288         // Note "registeredUsers" has no optionals. It only gives us info on users who are registered
 289         var registeredUsers = getRegisteredUsers(canonicalizedNumbers.values()
 290                 .stream()
 291                 .filter(s -> !s.isEmpty())
 292                 .collect(Collectors.toSet()));
 293
 294         return numbers.stream().collect(Collectors.toMap(n -> n, n -> {
 295             final var number = canonicalizedNumbers.get(n);
 296             final var uuid = registeredUsers.get(number);
 297             return new Pair<>(number.isEmpty() ? null : number, uuid);
 298         }));
 299     }
 300
 301     @Override
 302     public void updateAccountAttributes(String deviceName) throws IOException {
 303         final String encryptedDeviceName;
 304         if (deviceName == null) {
 305             encryptedDeviceName = account.getEncryptedDeviceName();
 306         } else {
 307             final var privateKey = account.getIdentityKeyPair().getPrivateKey();
 308             encryptedDeviceName = DeviceNameUtil.encryptDeviceName(deviceName, privateKey);
 309             account.setEncryptedDeviceName(encryptedDeviceName);
 310         }
 311         dependencies.getAccountManager()
 312                 .setAccountAttributes(encryptedDeviceName,
 313                         null,
 314                         account.getLocalRegistrationId(),
 315                         true,
 316                         null,
 317                         account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 318                         account.getSelfUnidentifiedAccessKey(),
 319                         account.isUnrestrictedUnidentifiedAccess(),
 320                         capabilities,
 321                         account.isDiscoverableByPhoneNumber());
 322     }
 323
 324     @Override
 325     public void updateConfiguration(
 326             final Boolean readReceipts,
 327             final Boolean unidentifiedDeliveryIndicators,
 328             final Boolean typingIndicators,
 329             final Boolean linkPreviews
 330     ) throws IOException, NotMasterDeviceException {
 331         if (!account.isMasterDevice()) {
 332             throw new NotMasterDeviceException();
 333         }
 334
 335         final var configurationStore = account.getConfigurationStore();
 336         if (readReceipts != null) {
 337             configurationStore.setReadReceipts(readReceipts);
 338         }
 339         if (unidentifiedDeliveryIndicators != null) {
 340             configurationStore.setUnidentifiedDeliveryIndicators(unidentifiedDeliveryIndicators);
 341         }
 342         if (typingIndicators != null) {
 343             configurationStore.setTypingIndicators(typingIndicators);
 344         }
 345         if (linkPreviews != null) {
 346             configurationStore.setLinkPreviews(linkPreviews);
 347         }
 348         syncHelper.sendConfigurationMessage();
 349     }
 350
 351     /**
 352      * @param givenName  if null, the previous givenName will be kept
 353      * @param familyName if null, the previous familyName will be kept
 354      * @param about      if null, the previous about text will be kept
 355      * @param aboutEmoji if null, the previous about emoji will be kept
 356      * @param avatar     if avatar is null the image from the local avatar store is used (if present),
 357      */
 358     @Override
 359     public void setProfile(
 360             String givenName, final String familyName, String about, String aboutEmoji, java.util.Optional<File> avatar
 361     ) throws IOException {
 362         profileHelper.setProfile(givenName,
 363                 familyName,
 364                 about,
 365                 aboutEmoji,
 366                 avatar == null ? null : Optional.fromNullable(avatar.orElse(null)));
 367         syncHelper.sendSyncFetchProfileMessage();
 368     }
 369
 370     @Override
 371     public void unregister() throws IOException {
 372         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 373         // If this is the master device, other users can't send messages to this number anymore.
 374         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 375         dependencies.getAccountManager().setGcmId(Optional.absent());
 376
 377         account.setRegistered(false);
 378     }
 379
 380     @Override
 381     public void deleteAccount() throws IOException {
 382         try {
 383             pinHelper.removeRegistrationLockPin();
 384         } catch (IOException e) {
 385             logger.warn("Failed to remove registration lock pin");
 386         }
 387         account.setRegistrationLockPin(null, null);
 388
 389         dependencies.getAccountManager().deleteAccount();
 390
 391         account.setRegistered(false);
 392     }
 393
 394     @Override
 395     public void submitRateLimitRecaptchaChallenge(String challenge, String captcha) throws IOException {
 396         dependencies.getAccountManager().submitRateLimitRecaptchaChallenge(challenge, captcha);
 397     }
 398
 399     @Override
 400     public List<Device> getLinkedDevices() throws IOException {
 401         var devices = dependencies.getAccountManager().getDevices();
 402         account.setMultiDevice(devices.size() > 1);
 403         var identityKey = account.getIdentityKeyPair().getPrivateKey();
 404         return devices.stream().map(d -> {
 405             String deviceName = d.getName();
 406             if (deviceName != null) {
 407                 try {
 408                     deviceName = DeviceNameUtil.decryptDeviceName(deviceName, identityKey);
 409                 } catch (IOException e) {
 410                     logger.debug("Failed to decrypt device name, maybe plain text?", e);
 411                 }
 412             }
 413             return new Device(d.getId(),
 414                     deviceName,
 415                     d.getCreated(),
 416                     d.getLastSeen(),
 417                     d.getId() == account.getDeviceId());
 418         }).collect(Collectors.toList());
 419     }
 420
 421     @Override
 422     public void removeLinkedDevices(long deviceId) throws IOException {
 423         dependencies.getAccountManager().removeDevice(deviceId);
 424         var devices = dependencies.getAccountManager().getDevices();
 425         account.setMultiDevice(devices.size() > 1);
 426     }
 427
 428     @Override
 429     public void addDeviceLink(URI linkUri) throws IOException, InvalidDeviceLinkException {
 430         var info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 431
 432         addDevice(info.deviceIdentifier(), info.deviceKey());
 433     }
 434
 435     private void addDevice(
 436             String deviceIdentifier, ECPublicKey deviceKey
 437     ) throws IOException, InvalidDeviceLinkException {
 438         var identityKeyPair = account.getIdentityKeyPair();
 439         var verificationCode = dependencies.getAccountManager().getNewDeviceVerificationCode();
 440
 441         try {
 442             dependencies.getAccountManager()
 443                     .addDevice(deviceIdentifier,
 444                             deviceKey,
 445                             identityKeyPair,
 446                             Optional.of(account.getProfileKey().serialize()),
 447                             verificationCode);
 448         } catch (InvalidKeyException e) {
 449             throw new InvalidDeviceLinkException("Invalid device link", e);
 450         }
 451         account.setMultiDevice(true);
 452     }
 453
 454     @Override
 455     public void setRegistrationLockPin(java.util.Optional<String> pin) throws IOException {
 456         if (!account.isMasterDevice()) {
 457             throw new RuntimeException("Only master device can set a PIN");
 458         }
 459         if (pin.isPresent()) {
 460             final var masterKey = account.getPinMasterKey() != null
 461                     ? account.getPinMasterKey()
 462                     : KeyUtils.createMasterKey();
 463
 464             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 465
 466             account.setRegistrationLockPin(pin.get(), masterKey);
 467         } else {
 468             // Remove KBS Pin
 469             pinHelper.removeRegistrationLockPin();
 470
 471             account.setRegistrationLockPin(null, null);
 472         }
 473     }
 474
 475     void refreshPreKeys() throws IOException {
 476         preKeyHelper.refreshPreKeys();
 477     }
 478
 479     @Override
 480     public Profile getRecipientProfile(RecipientIdentifier.Single recipient) throws IOException {
 481         return profileHelper.getRecipientProfile(resolveRecipient(recipient));
 482     }
 483
 484     private Profile getRecipientProfile(RecipientId recipientId) {
 485         return profileHelper.getRecipientProfile(recipientId);
 486     }
 487
 488     @Override
 489     public List<Group> getGroups() {
 490         return account.getGroupStore().getGroups().stream().map(this::toGroup).collect(Collectors.toList());
 491     }
 492
 493     private Group toGroup(final GroupInfo groupInfo) {
 494         if (groupInfo == null) {
 495             return null;
 496         }
 497
 498         return new Group(groupInfo.getGroupId(),
 499                 groupInfo.getTitle(),
 500                 groupInfo.getDescription(),
 501                 groupInfo.getGroupInviteLink(),
 502                 groupInfo.getMembers()
 503                         .stream()
 504                         .map(account.getRecipientStore()::resolveRecipientAddress)
 505                         .collect(Collectors.toSet()),
 506                 groupInfo.getPendingMembers()
 507                         .stream()
 508                         .map(account.getRecipientStore()::resolveRecipientAddress)
 509                         .collect(Collectors.toSet()),
 510                 groupInfo.getRequestingMembers()
 511                         .stream()
 512                         .map(account.getRecipientStore()::resolveRecipientAddress)
 513                         .collect(Collectors.toSet()),
 514                 groupInfo.getAdminMembers()
 515                         .stream()
 516                         .map(account.getRecipientStore()::resolveRecipientAddress)
 517                         .collect(Collectors.toSet()),
 518                 groupInfo.isBlocked(),
 519                 groupInfo.getMessageExpirationTimer(),
 520                 groupInfo.getPermissionAddMember(),
 521                 groupInfo.getPermissionEditDetails(),
 522                 groupInfo.getPermissionSendMessage(),
 523                 groupInfo.isMember(account.getSelfRecipientId()),
 524                 groupInfo.isAdmin(account.getSelfRecipientId()));
 525     }
 526
 527     @Override
 528     public SendGroupMessageResults quitGroup(
 529             GroupId groupId, Set<RecipientIdentifier.Single> groupAdmins
 530     ) throws GroupNotFoundException, IOException, NotAGroupMemberException, LastGroupAdminException {
 531         final var newAdmins = resolveRecipients(groupAdmins);
 532         return groupHelper.quitGroup(groupId, newAdmins);
 533     }
 534
 535     @Override
 536     public void deleteGroup(GroupId groupId) throws IOException {
 537         groupHelper.deleteGroup(groupId);
 538     }
 539
 540     @Override
 541     public Pair<GroupId, SendGroupMessageResults> createGroup(
 542             String name, Set<RecipientIdentifier.Single> members, File avatarFile
 543     ) throws IOException, AttachmentInvalidException {
 544         return groupHelper.createGroup(name, members == null ? null : resolveRecipients(members), avatarFile);
 545     }
 546
 547     @Override
 548     public SendGroupMessageResults updateGroup(
 549             final GroupId groupId, final UpdateGroup updateGroup
 550     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException, GroupSendingNotAllowedException {
 551         return groupHelper.updateGroup(groupId,
 552                 updateGroup.getName(),
 553                 updateGroup.getDescription(),
 554                 updateGroup.getMembers() == null ? null : resolveRecipients(updateGroup.getMembers()),
 555                 updateGroup.getRemoveMembers() == null ? null : resolveRecipients(updateGroup.getRemoveMembers()),
 556                 updateGroup.getAdmins() == null ? null : resolveRecipients(updateGroup.getAdmins()),
 557                 updateGroup.getRemoveAdmins() == null ? null : resolveRecipients(updateGroup.getRemoveAdmins()),
 558                 updateGroup.isResetGroupLink(),
 559                 updateGroup.getGroupLinkState(),
 560                 updateGroup.getAddMemberPermission(),
 561                 updateGroup.getEditDetailsPermission(),
 562                 updateGroup.getAvatarFile(),
 563                 updateGroup.getExpirationTimer(),
 564                 updateGroup.getIsAnnouncementGroup());
 565     }
 566
 567     @Override
 568     public Pair<GroupId, SendGroupMessageResults> joinGroup(
 569             GroupInviteLinkUrl inviteLinkUrl
 570     ) throws IOException, InactiveGroupLinkException {
 571         return groupHelper.joinGroup(inviteLinkUrl);
 572     }
 573
 574     private SendMessageResults sendMessage(
 575             SignalServiceDataMessage.Builder messageBuilder, Set<RecipientIdentifier> recipients
 576     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 577         var results = new HashMap<RecipientIdentifier, List<SendMessageResult>>();
 578         long timestamp = System.currentTimeMillis();
 579         messageBuilder.withTimestamp(timestamp);
 580         for (final var recipient : recipients) {
 581             if (recipient instanceof RecipientIdentifier.Single single) {
 582                 final var recipientId = resolveRecipient(single);
 583                 final var result = sendHelper.sendMessage(messageBuilder, recipientId);
 584                 results.put(recipient, List.of(result));
 585             } else if (recipient instanceof RecipientIdentifier.NoteToSelf) {
 586                 final var result = sendHelper.sendSelfMessage(messageBuilder);
 587                 results.put(recipient, List.of(result));
 588             } else if (recipient instanceof RecipientIdentifier.Group group) {
 589                 final var result = sendHelper.sendAsGroupMessage(messageBuilder, group.groupId());
 590                 results.put(recipient, result);
 591             }
 592         }
 593         return new SendMessageResults(timestamp, results);
 594     }
 595
 596     private void sendTypingMessage(
 597             SignalServiceTypingMessage.Action action, Set<RecipientIdentifier> recipients
 598     ) throws IOException, UntrustedIdentityException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 599         final var timestamp = System.currentTimeMillis();
 600         for (var recipient : recipients) {
 601             if (recipient instanceof RecipientIdentifier.Single) {
 602                 final var message = new SignalServiceTypingMessage(action, timestamp, Optional.absent());
 603                 final var recipientId = resolveRecipient((RecipientIdentifier.Single) recipient);
 604                 sendHelper.sendTypingMessage(message, recipientId);
 605             } else if (recipient instanceof RecipientIdentifier.Group) {
 606                 final var groupId = ((RecipientIdentifier.Group) recipient).groupId();
 607                 final var message = new SignalServiceTypingMessage(action, timestamp, Optional.of(groupId.serialize()));
 608                 sendHelper.sendGroupTypingMessage(message, groupId);
 609             }
 610         }
 611     }
 612
 613     @Override
 614     public void sendTypingMessage(
 615             TypingAction action, Set<RecipientIdentifier> recipients
 616     ) throws IOException, UntrustedIdentityException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 617         sendTypingMessage(action.toSignalService(), recipients);
 618     }
 619
 620     @Override
 621     public void sendReadReceipt(
 622             RecipientIdentifier.Single sender, List<Long> messageIds
 623     ) throws IOException, UntrustedIdentityException {
 624         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.READ,
 625                 messageIds,
 626                 System.currentTimeMillis());
 627
 628         sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(sender));
 629     }
 630
 631     @Override
 632     public void sendViewedReceipt(
 633             RecipientIdentifier.Single sender, List<Long> messageIds
 634     ) throws IOException, UntrustedIdentityException {
 635         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.VIEWED,
 636                 messageIds,
 637                 System.currentTimeMillis());
 638
 639         sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(sender));
 640     }
 641
 642     @Override
 643     public SendMessageResults sendMessage(
 644             Message message, Set<RecipientIdentifier> recipients
 645     ) throws IOException, AttachmentInvalidException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 646         final var messageBuilder = SignalServiceDataMessage.newBuilder();
 647         applyMessage(messageBuilder, message);
 648         return sendMessage(messageBuilder, recipients);
 649     }
 650
 651     private void applyMessage(
 652             final SignalServiceDataMessage.Builder messageBuilder, final Message message
 653     ) throws AttachmentInvalidException, IOException {
 654         messageBuilder.withBody(message.messageText());
 655         final var attachments = message.attachments();
 656         if (attachments != null) {
 657             messageBuilder.withAttachments(attachmentHelper.uploadAttachments(attachments));
 658         }
 659     }
 660
 661     @Override
 662     public SendMessageResults sendRemoteDeleteMessage(
 663             long targetSentTimestamp, Set<RecipientIdentifier> recipients
 664     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 665         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
 666         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
 667         return sendMessage(messageBuilder, recipients);
 668     }
 669
 670     @Override
 671     public SendMessageResults sendMessageReaction(
 672             String emoji,
 673             boolean remove,
 674             RecipientIdentifier.Single targetAuthor,
 675             long targetSentTimestamp,
 676             Set<RecipientIdentifier> recipients
 677     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 678         var targetAuthorRecipientId = resolveRecipient(targetAuthor);
 679         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 680                 remove,
 681                 resolveSignalServiceAddress(targetAuthorRecipientId),
 682                 targetSentTimestamp);
 683         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
 684         return sendMessage(messageBuilder, recipients);
 685     }
 686
 687     @Override
 688     public SendMessageResults sendEndSessionMessage(Set<RecipientIdentifier.Single> recipients) throws IOException {
 689         var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
 690
 691         try {
 692             return sendMessage(messageBuilder,
 693                     recipients.stream().map(RecipientIdentifier.class::cast).collect(Collectors.toSet()));
 694         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 695             throw new AssertionError(e);
 696         } finally {
 697             for (var recipient : recipients) {
 698                 final var recipientId = resolveRecipient(recipient);
 699                 account.getSessionStore().deleteAllSessions(recipientId);
 700             }
 701         }
 702     }
 703
 704     @Override
 705     public void setContactName(
 706             RecipientIdentifier.Single recipient, String name
 707     ) throws NotMasterDeviceException, IOException {
 708         if (!account.isMasterDevice()) {
 709             throw new NotMasterDeviceException();
 710         }
 711         contactHelper.setContactName(resolveRecipient(recipient), name);
 712     }
 713
 714     @Override
 715     public void setContactBlocked(
 716             RecipientIdentifier.Single recipient, boolean blocked
 717     ) throws NotMasterDeviceException, IOException {
 718         if (!account.isMasterDevice()) {
 719             throw new NotMasterDeviceException();
 720         }
 721         contactHelper.setContactBlocked(resolveRecipient(recipient), blocked);
 722         // TODO cycle our profile key
 723         syncHelper.sendBlockedList();
 724     }
 725
 726     @Override
 727     public void setGroupBlocked(
 728             final GroupId groupId, final boolean blocked
 729     ) throws GroupNotFoundException, IOException, NotMasterDeviceException {
 730         if (!account.isMasterDevice()) {
 731             throw new NotMasterDeviceException();
 732         }
 733         groupHelper.setGroupBlocked(groupId, blocked);
 734         // TODO cycle our profile key
 735         syncHelper.sendBlockedList();
 736     }
 737
 738     /**
 739      * Change the expiration timer for a contact
 740      */
 741     @Override
 742     public void setExpirationTimer(
 743             RecipientIdentifier.Single recipient, int messageExpirationTimer
 744     ) throws IOException {
 745         var recipientId = resolveRecipient(recipient);
 746         contactHelper.setExpirationTimer(recipientId, messageExpirationTimer);
 747         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
 748         try {
 749             sendMessage(messageBuilder, Set.of(recipient));
 750         } catch (NotAGroupMemberException | GroupNotFoundException | GroupSendingNotAllowedException e) {
 751             throw new AssertionError(e);
 752         }
 753     }
 754
 755     /**
 756      * Upload the sticker pack from path.
 757      *
 758      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 759      * @return if successful, returns the URL to install the sticker pack in the signal app
 760      */
 761     @Override
 762     public URI uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
 763         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
 764
 765         var messageSender = dependencies.getMessageSender();
 766
 767         var packKey = KeyUtils.createStickerUploadKey();
 768         var packIdString = messageSender.uploadStickerManifest(manifest, packKey);
 769         var packId = StickerPackId.deserialize(Hex.fromStringCondensed(packIdString));
 770
 771         var sticker = new Sticker(packId, packKey);
 772         account.getStickerStore().updateSticker(sticker);
 773
 774         try {
 775             return new URI("https",
 776                     "signal.art",
 777                     "/addstickers/",
 778                     "pack_id="
 779                             + URLEncoder.encode(Hex.toStringCondensed(packId.serialize()), StandardCharsets.UTF_8)
 780                             + "&pack_key="
 781                             + URLEncoder.encode(Hex.toStringCondensed(packKey), StandardCharsets.UTF_8));
 782         } catch (URISyntaxException e) {
 783             throw new AssertionError(e);
 784         }
 785     }
 786
 787     @Override
 788     public void requestAllSyncData() throws IOException {
 789         syncHelper.requestAllSyncData();
 790         retrieveRemoteStorage();
 791     }
 792
 793     void retrieveRemoteStorage() throws IOException {
 794         if (account.getStorageKey() != null) {
 795             storageHelper.readDataFromStorage();
 796         }
 797     }
 798
 799     private RecipientId refreshRegisteredUser(RecipientId recipientId) throws IOException {
 800         final var address = resolveSignalServiceAddress(recipientId);
 801         if (!address.getNumber().isPresent()) {
 802             return recipientId;
 803         }
 804         final var number = address.getNumber().get();
 805         final var uuid = getRegisteredUser(number);
 806         return resolveRecipientTrusted(new SignalServiceAddress(uuid, number));
 807     }
 808
 809     private UUID getRegisteredUser(final String number) throws IOException {
 810         final Map<String, UUID> uuidMap;
 811         try {
 812             uuidMap = getRegisteredUsers(Set.of(number));
 813         } catch (NumberFormatException e) {
 814             throw new IOException(number, e);
 815         }
 816         final var uuid = uuidMap.get(number);
 817         if (uuid == null) {
 818             throw new IOException(number, null);
 819         }
 820         return uuid;
 821     }
 822
 823     private Map<String, UUID> getRegisteredUsers(final Set<String> numbers) throws IOException {
 824         final Map<String, UUID> registeredUsers;
 825         try {
 826             registeredUsers = dependencies.getAccountManager()
 827                     .getRegisteredUsers(ServiceConfig.getIasKeyStore(),
 828                             numbers,
 829                             serviceEnvironmentConfig.getCdsMrenclave());
 830         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
 831             throw new IOException(e);
 832         }
 833
 834         // Store numbers as recipients so we have the number/uuid association
 835         registeredUsers.forEach((number, uuid) -> resolveRecipientTrusted(new SignalServiceAddress(uuid, number)));
 836
 837         return registeredUsers;
 838     }
 839
 840     private void retryFailedReceivedMessages(ReceiveMessageHandler handler) {
 841         Set<HandleAction> queuedActions = new HashSet<>();
 842         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
 843             var actions = retryFailedReceivedMessage(handler, cachedMessage);
 844             if (actions != null) {
 845                 queuedActions.addAll(actions);
 846             }
 847         }
 848         handleQueuedActions(queuedActions);
 849     }
 850
 851     private List<HandleAction> retryFailedReceivedMessage(
 852             final ReceiveMessageHandler handler, final CachedMessage cachedMessage
 853     ) {
 854         var envelope = cachedMessage.loadEnvelope();
 855         if (envelope == null) {
 856             cachedMessage.delete();
 857             return null;
 858         }
 859
 860         final var result = incomingMessageHandler.handleRetryEnvelope(envelope, ignoreAttachments, handler);
 861         final var actions = result.first();
 862         final var exception = result.second();
 863
 864         if (exception instanceof UntrustedIdentityException) {
 865             if (System.currentTimeMillis() - envelope.getServerDeliveredTimestamp() > 1000L * 60 * 60 * 24 * 30) {
 866                 // Envelope is more than a month old, cleaning up.
 867                 cachedMessage.delete();
 868                 return null;
 869             }
 870             if (!envelope.hasSourceUuid()) {
 871                 final var identifier = ((UntrustedIdentityException) exception).getSender();
 872                 final var recipientId = account.getRecipientStore().resolveRecipient(identifier);
 873                 try {
 874                     account.getMessageCache().replaceSender(cachedMessage, recipientId);
 875                 } catch (IOException ioException) {
 876                     logger.warn("Failed to move cached message to recipient folder: {}", ioException.getMessage());
 877                 }
 878             }
 879             return null;
 880         }
 881
 882         // If successful and for all other errors that are not recoverable, delete the cached message
 883         cachedMessage.delete();
 884         return actions;
 885     }
 886
 887     @Override
 888     public void addReceiveHandler(final ReceiveMessageHandler handler) {
 889         if (isReceivingSynchronous) {
 890             throw new IllegalStateException("Already receiving message synchronously.");
 891         }
 892         synchronized (messageHandlers) {
 893             messageHandlers.add(handler);
 894
 895             startReceiveThreadIfRequired();
 896         }
 897     }
 898
 899     private void startReceiveThreadIfRequired() {
 900         if (receiveThread != null) {
 901             return;
 902         }
 903         receiveThread = new Thread(() -> {
 904             while (!Thread.interrupted()) {
 905                 try {
 906                     receiveMessagesInternal(1L, TimeUnit.HOURS, false, (envelope, e) -> {
 907                         synchronized (messageHandlers) {
 908                             for (ReceiveMessageHandler h : messageHandlers) {
 909                                 try {
 910                                     h.handleMessage(envelope, e);
 911                                 } catch (Exception ex) {
 912                                     logger.warn("Message handler failed, ignoring", ex);
 913                                 }
 914                             }
 915                         }
 916                     });
 917                     break;
 918                 } catch (IOException e) {
 919                     logger.warn("Receiving messages failed, retrying", e);
 920                 }
 921             }
 922             hasCaughtUpWithOldMessages = false;
 923             synchronized (messageHandlers) {
 924                 receiveThread = null;
 925
 926                 // Check if in the meantime another handler has been registered
 927                 if (!messageHandlers.isEmpty()) {
 928                     startReceiveThreadIfRequired();
 929                 }
 930             }
 931         });
 932
 933         receiveThread.start();
 934     }
 935
 936     @Override
 937     public void removeReceiveHandler(final ReceiveMessageHandler handler) {
 938         final Thread thread;
 939         synchronized (messageHandlers) {
 940             thread = receiveThread;
 941             receiveThread = null;
 942             messageHandlers.remove(handler);
 943             if (!messageHandlers.isEmpty() || isReceivingSynchronous) {
 944                 return;
 945             }
 946         }
 947
 948         stopReceiveThread(thread);
 949     }
 950
 951     private void stopReceiveThread(final Thread thread) {
 952         thread.interrupt();
 953         try {
 954             thread.join();
 955         } catch (InterruptedException ignored) {
 956         }
 957     }
 958
 959     @Override
 960     public boolean isReceiving() {
 961         if (isReceivingSynchronous) {
 962             return true;
 963         }
 964         synchronized (messageHandlers) {
 965             return messageHandlers.size() > 0;
 966         }
 967     }
 968
 969     @Override
 970     public void receiveMessages(long timeout, TimeUnit unit, ReceiveMessageHandler handler) throws IOException {
 971         receiveMessages(timeout, unit, true, handler);
 972     }
 973
 974     @Override
 975     public void receiveMessages(ReceiveMessageHandler handler) throws IOException {
 976         receiveMessages(1L, TimeUnit.HOURS, false, handler);
 977     }
 978
 979     private void receiveMessages(
 980             long timeout, TimeUnit unit, boolean returnOnTimeout, ReceiveMessageHandler handler
 981     ) throws IOException {
 982         if (isReceiving()) {
 983             throw new IllegalStateException("Already receiving message.");
 984         }
 985         isReceivingSynchronous = true;
 986         receiveThread = Thread.currentThread();
 987         try {
 988             receiveMessagesInternal(timeout, unit, returnOnTimeout, handler);
 989         } finally {
 990             receiveThread = null;
 991             hasCaughtUpWithOldMessages = false;
 992             isReceivingSynchronous = false;
 993         }
 994     }
 995
 996     private void receiveMessagesInternal(
 997             long timeout, TimeUnit unit, boolean returnOnTimeout, ReceiveMessageHandler handler
 998     ) throws IOException {
 999         retryFailedReceivedMessages(handler);
1000
1001         Set<HandleAction> queuedActions = new HashSet<>();
1002
1003         final var signalWebSocket = dependencies.getSignalWebSocket();
1004         signalWebSocket.connect();
1005
1006         hasCaughtUpWithOldMessages = false;
1007         var backOffCounter = 0;
1008         final var MAX_BACKOFF_COUNTER = 9;
1009
1010         while (!Thread.interrupted()) {
1011             SignalServiceEnvelope envelope;
1012             final CachedMessage[] cachedMessage = {null};
1013             account.setLastReceiveTimestamp(System.currentTimeMillis());
1014             logger.debug("Checking for new message from server");
1015             try {
1016                 var result = signalWebSocket.readOrEmpty(unit.toMillis(timeout), envelope1 -> {
1017                     final var recipientId = envelope1.hasSourceUuid()
1018                             ? resolveRecipient(envelope1.getSourceAddress())
1019                             : null;
1020                     // store message on disk, before acknowledging receipt to the server
1021                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1, recipientId);
1022                 });
1023                 backOffCounter = 0;
1024
1025                 if (result.isPresent()) {
1026                     envelope = result.get();
1027                     logger.debug("New message received from server");
1028                 } else {
1029                     logger.debug("Received indicator that server queue is empty");
1030                     handleQueuedActions(queuedActions);
1031                     queuedActions.clear();
1032
1033                     hasCaughtUpWithOldMessages = true;
1034                     synchronized (this) {
1035                         this.notifyAll();
1036                     }
1037
1038                     // Continue to wait another timeout for new messages
1039                     continue;
1040                 }
1041             } catch (AssertionError e) {
1042                 if (e.getCause() instanceof InterruptedException) {
1043                     Thread.currentThread().interrupt();
1044                     break;
1045                 } else {
1046                     throw e;
1047                 }
1048             } catch (IOException e) {
1049                 logger.debug("Pipe unexpectedly unavailable: {}", e.getMessage());
1050                 if (e instanceof WebSocketUnavailableException || "Connection closed!".equals(e.getMessage())) {
1051                     final var sleepMilliseconds = 100 * (long) Math.pow(2, backOffCounter);
1052                     backOffCounter = Math.min(backOffCounter + 1, MAX_BACKOFF_COUNTER);
1053                     logger.warn("Connection closed unexpectedly, reconnecting in {} ms", sleepMilliseconds);
1054                     try {
1055                         Thread.sleep(sleepMilliseconds);
1056                     } catch (InterruptedException interruptedException) {
1057                         return;
1058                     }
1059                     hasCaughtUpWithOldMessages = false;
1060                     signalWebSocket.connect();
1061                     continue;
1062                 }
1063                 throw e;
1064             } catch (TimeoutException e) {
1065                 backOffCounter = 0;
1066                 if (returnOnTimeout) return;
1067                 continue;
1068             }
1069
1070             final var result = incomingMessageHandler.handleEnvelope(envelope, ignoreAttachments, handler);
1071             queuedActions.addAll(result.first());
1072             final var exception = result.second();
1073
1074             if (hasCaughtUpWithOldMessages) {
1075                 handleQueuedActions(queuedActions);
1076                 queuedActions.clear();
1077             }
1078             if (cachedMessage[0] != null) {
1079                 if (exception instanceof UntrustedIdentityException) {
1080                     logger.debug("Keeping message with untrusted identity in message cache");
1081                     final var address = ((UntrustedIdentityException) exception).getSender();
1082                     final var recipientId = resolveRecipient(address);
1083                     if (!envelope.hasSourceUuid()) {
1084                         try {
1085                             cachedMessage[0] = account.getMessageCache().replaceSender(cachedMessage[0], recipientId);
1086                         } catch (IOException ioException) {
1087                             logger.warn("Failed to move cached message to recipient folder: {}",
1088                                     ioException.getMessage());
1089                         }
1090                     }
1091                 } else {
1092                     cachedMessage[0].delete();
1093                 }
1094             }
1095         }
1096         handleQueuedActions(queuedActions);
1097         queuedActions.clear();
1098     }
1099
1100     @Override
1101     public void setIgnoreAttachments(final boolean ignoreAttachments) {
1102         this.ignoreAttachments = ignoreAttachments;
1103     }
1104
1105     @Override
1106     public boolean hasCaughtUpWithOldMessages() {
1107         return hasCaughtUpWithOldMessages;
1108     }
1109
1110     private void handleQueuedActions(final Collection<HandleAction> queuedActions) {
1111         logger.debug("Handling message actions");
1112         var interrupted = false;
1113         for (var action : queuedActions) {
1114             try {
1115                 action.execute(context);
1116             } catch (Throwable e) {
1117                 if ((e instanceof AssertionError || e instanceof RuntimeException)
1118                         && e.getCause() instanceof InterruptedException) {
1119                     interrupted = true;
1120                     continue;
1121                 }
1122                 logger.warn("Message action failed.", e);
1123             }
1124         }
1125         if (interrupted) {
1126             Thread.currentThread().interrupt();
1127         }
1128     }
1129
1130     @Override
1131     public boolean isContactBlocked(final RecipientIdentifier.Single recipient) {
1132         final RecipientId recipientId;
1133         try {
1134             recipientId = resolveRecipient(recipient);
1135         } catch (IOException e) {
1136             return false;
1137         }
1138         return contactHelper.isContactBlocked(recipientId);
1139     }
1140
1141     @Override
1142     public File getAttachmentFile(String attachmentId) {
1143         return attachmentHelper.getAttachmentFile(attachmentId);
1144     }
1145
1146     @Override
1147     public void sendContacts() throws IOException {
1148         syncHelper.sendContacts();
1149     }
1150
1151     @Override
1152     public List<Pair<RecipientAddress, Contact>> getContacts() {
1153         return account.getContactStore()
1154                 .getContacts()
1155                 .stream()
1156                 .map(p -> new Pair<>(account.getRecipientStore().resolveRecipientAddress(p.first()), p.second()))
1157                 .collect(Collectors.toList());
1158     }
1159
1160     @Override
1161     public String getContactOrProfileName(RecipientIdentifier.Single recipient) {
1162         final RecipientId recipientId;
1163         try {
1164             recipientId = resolveRecipient(recipient);
1165         } catch (IOException e) {
1166             return null;
1167         }
1168
1169         final var contact = account.getContactStore().getContact(recipientId);
1170         if (contact != null && !Util.isEmpty(contact.getName())) {
1171             return contact.getName();
1172         }
1173
1174         final var profile = getRecipientProfile(recipientId);
1175         if (profile != null) {
1176             return profile.getDisplayName();
1177         }
1178
1179         return null;
1180     }
1181
1182     @Override
1183     public Group getGroup(GroupId groupId) {
1184         return toGroup(groupHelper.getGroup(groupId));
1185     }
1186
1187     private GroupInfo getGroupInfo(GroupId groupId) {
1188         return groupHelper.getGroup(groupId);
1189     }
1190
1191     @Override
1192     public List<Identity> getIdentities() {
1193         return account.getIdentityKeyStore()
1194                 .getIdentities()
1195                 .stream()
1196                 .map(this::toIdentity)
1197                 .collect(Collectors.toList());
1198     }
1199
1200     private Identity toIdentity(final IdentityInfo identityInfo) {
1201         if (identityInfo == null) {
1202             return null;
1203         }
1204
1205         final var address = account.getRecipientStore().resolveRecipientAddress(identityInfo.getRecipientId());
1206         final var scannableFingerprint = identityHelper.computeSafetyNumberForScanning(identityInfo.getRecipientId(),
1207                 identityInfo.getIdentityKey());
1208         return new Identity(address,
1209                 identityInfo.getIdentityKey(),
1210                 identityHelper.computeSafetyNumber(identityInfo.getRecipientId(), identityInfo.getIdentityKey()),
1211                 scannableFingerprint == null ? null : scannableFingerprint.getSerialized(),
1212                 identityInfo.getTrustLevel(),
1213                 identityInfo.getDateAdded());
1214     }
1215
1216     @Override
1217     public List<Identity> getIdentities(RecipientIdentifier.Single recipient) {
1218         IdentityInfo identity;
1219         try {
1220             identity = account.getIdentityKeyStore().getIdentity(resolveRecipient(recipient));
1221         } catch (IOException e) {
1222             identity = null;
1223         }
1224         return identity == null ? List.of() : List.of(toIdentity(identity));
1225     }
1226
1227     /**
1228      * Trust this the identity with this fingerprint
1229      *
1230      * @param recipient   username of the identity
1231      * @param fingerprint Fingerprint
1232      */
1233     @Override
1234     public boolean trustIdentityVerified(RecipientIdentifier.Single recipient, byte[] fingerprint) {
1235         RecipientId recipientId;
1236         try {
1237             recipientId = resolveRecipient(recipient);
1238         } catch (IOException e) {
1239             return false;
1240         }
1241         return identityHelper.trustIdentityVerified(recipientId, fingerprint);
1242     }
1243
1244     /**
1245      * Trust this the identity with this safety number
1246      *
1247      * @param recipient    username of the identity
1248      * @param safetyNumber Safety number
1249      */
1250     @Override
1251     public boolean trustIdentityVerifiedSafetyNumber(RecipientIdentifier.Single recipient, String safetyNumber) {
1252         RecipientId recipientId;
1253         try {
1254             recipientId = resolveRecipient(recipient);
1255         } catch (IOException e) {
1256             return false;
1257         }
1258         return identityHelper.trustIdentityVerifiedSafetyNumber(recipientId, safetyNumber);
1259     }
1260
1261     /**
1262      * Trust this the identity with this scannable safety number
1263      *
1264      * @param recipient    username of the identity
1265      * @param safetyNumber Scannable safety number
1266      */
1267     @Override
1268     public boolean trustIdentityVerifiedSafetyNumber(RecipientIdentifier.Single recipient, byte[] safetyNumber) {
1269         RecipientId recipientId;
1270         try {
1271             recipientId = resolveRecipient(recipient);
1272         } catch (IOException e) {
1273             return false;
1274         }
1275         return identityHelper.trustIdentityVerifiedSafetyNumber(recipientId, safetyNumber);
1276     }
1277
1278     /**
1279      * Trust all keys of this identity without verification
1280      *
1281      * @param recipient username of the identity
1282      */
1283     @Override
1284     public boolean trustIdentityAllKeys(RecipientIdentifier.Single recipient) {
1285         RecipientId recipientId;
1286         try {
1287             recipientId = resolveRecipient(recipient);
1288         } catch (IOException e) {
1289             return false;
1290         }
1291         return identityHelper.trustIdentityAllKeys(recipientId);
1292     }
1293
1294     private void handleIdentityFailure(
1295             final RecipientId recipientId, final SendMessageResult.IdentityFailure identityFailure
1296     ) {
1297         this.identityHelper.handleIdentityFailure(recipientId, identityFailure);
1298     }
1299
1300     private SignalServiceAddress resolveSignalServiceAddress(RecipientId recipientId) {
1301         final var address = account.getRecipientStore().resolveRecipientAddress(recipientId);
1302         if (address.getUuid().isPresent()) {
1303             return address.toSignalServiceAddress();
1304         }
1305
1306         // Address in recipient store doesn't have a uuid, this shouldn't happen
1307         // Try to retrieve the uuid from the server
1308         final var number = address.getNumber().get();
1309         final UUID uuid;
1310         try {
1311             uuid = getRegisteredUser(number);
1312         } catch (IOException e) {
1313             logger.warn("Failed to get uuid for e164 number: {}", number, e);
1314             // Return SignalServiceAddress with unknown UUID
1315             return address.toSignalServiceAddress();
1316         }
1317         return resolveSignalServiceAddress(account.getRecipientStore().resolveRecipient(uuid));
1318     }
1319
1320     private Set<RecipientId> resolveRecipients(Collection<RecipientIdentifier.Single> recipients) throws IOException {
1321         final var recipientIds = new HashSet<RecipientId>(recipients.size());
1322         for (var number : recipients) {
1323             final var recipientId = resolveRecipient(number);
1324             recipientIds.add(recipientId);
1325         }
1326         return recipientIds;
1327     }
1328
1329     private RecipientId resolveRecipient(final RecipientIdentifier.Single recipient) throws IOException {
1330         if (recipient instanceof RecipientIdentifier.Uuid) {
1331             return account.getRecipientStore().resolveRecipient(((RecipientIdentifier.Uuid) recipient).uuid());
1332         } else {
1333             final var number = ((RecipientIdentifier.Number) recipient).number();
1334             return account.getRecipientStore().resolveRecipient(number, () -> {
1335                 try {
1336                     return getRegisteredUser(number);
1337                 } catch (IOException e) {
1338                     return null;
1339                 }
1340             });
1341         }
1342     }
1343
1344     private RecipientId resolveRecipient(RecipientAddress address) {
1345         return account.getRecipientStore().resolveRecipient(address);
1346     }
1347
1348     private RecipientId resolveRecipient(SignalServiceAddress address) {
1349         return account.getRecipientStore().resolveRecipient(address);
1350     }
1351
1352     private RecipientId resolveRecipientTrusted(SignalServiceAddress address) {
1353         return account.getRecipientStore().resolveRecipientTrusted(address);
1354     }
1355
1356     @Override
1357     public void close() throws IOException {
1358         close(true);
1359     }
1360
1361     private void close(boolean closeAccount) throws IOException {
1362         Thread thread;
1363         synchronized (messageHandlers) {
1364             messageHandlers.clear();
1365             thread = receiveThread;
1366             receiveThread = null;
1367         }
1368         if (thread != null) {
1369             stopReceiveThread(thread);
1370         }
1371         executor.shutdown();
1372
1373         dependencies.getSignalWebSocket().disconnect();
1374
1375         if (closeAccount && account != null) {
1376             account.close();
1377         }
1378         account = null;
1379     }
1380 }