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.SignalServiceAttachmentRemoteId;
  74 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceTypingMessage;
  78 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  79 import org.whispersystems.signalservice.api.util.DeviceNameUtil;
  80 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  81 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
  82 import org.whispersystems.signalservice.api.websocket.WebSocketUnavailableException;
  83 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
  84 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
  85 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
  86 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
  87 import org.whispersystems.signalservice.internal.util.Hex;
  88 import org.whispersystems.signalservice.internal.util.Util;
  89
  90 import java.io.File;
  91 import java.io.IOException;
  92 import java.net.URI;
  93 import java.net.URISyntaxException;
  94 import java.net.URLEncoder;
  95 import java.nio.charset.StandardCharsets;
  96 import java.security.SignatureException;
  97 import java.util.Collection;
  98 import java.util.HashMap;
  99 import java.util.HashSet;
 100 import java.util.List;
 101 import java.util.Map;
 102 import java.util.Set;
 103 import java.util.UUID;
 104 import java.util.concurrent.ExecutorService;
 105 import java.util.concurrent.Executors;
 106 import java.util.concurrent.TimeUnit;
 107 import java.util.concurrent.TimeoutException;
 108 import java.util.concurrent.locks.ReentrantLock;
 109 import java.util.stream.Collectors;
 110
 111 import static org.asamk.signal.manager.config.ServiceConfig.capabilities;
 112
 113 public class ManagerImpl implements Manager {
 114
 115     private final static Logger logger = LoggerFactory.getLogger(ManagerImpl.class);
 116
 117     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
 118     private final SignalDependencies dependencies;
 119
 120     private SignalAccount account;
 121
 122     private final ExecutorService executor = Executors.newCachedThreadPool();
 123
 124     private final ProfileHelper profileHelper;
 125     private final PinHelper pinHelper;
 126     private final StorageHelper storageHelper;
 127     private final SendHelper sendHelper;
 128     private final SyncHelper syncHelper;
 129     private final AttachmentHelper attachmentHelper;
 130     private final GroupHelper groupHelper;
 131     private final ContactHelper contactHelper;
 132     private final IncomingMessageHandler incomingMessageHandler;
 133     private final PreKeyHelper preKeyHelper;
 134     private final IdentityHelper identityHelper;
 135
 136     private final Context context;
 137     private boolean hasCaughtUpWithOldMessages = false;
 138     private boolean ignoreAttachments = false;
 139
 140     private Thread receiveThread;
 141     private final Set<ReceiveMessageHandler> messageHandlers = new HashSet<>();
 142     private boolean isReceivingSynchronous;
 143
 144     ManagerImpl(
 145             SignalAccount account,
 146             PathConfig pathConfig,
 147             ServiceEnvironmentConfig serviceEnvironmentConfig,
 148             String userAgent
 149     ) {
 150         this.account = account;
 151         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 152
 153         final var credentialsProvider = new DynamicCredentialsProvider(account.getUuid(),
 154                 account.getUsername(),
 155                 account.getPassword(),
 156                 account.getDeviceId());
 157         final var sessionLock = new SignalSessionLock() {
 158             private final ReentrantLock LEGACY_LOCK = new ReentrantLock();
 159
 160             @Override
 161             public Lock acquire() {
 162                 LEGACY_LOCK.lock();
 163                 return LEGACY_LOCK::unlock;
 164             }
 165         };
 166         this.dependencies = new SignalDependencies(serviceEnvironmentConfig,
 167                 userAgent,
 168                 credentialsProvider,
 169                 account.getSignalProtocolStore(),
 170                 executor,
 171                 sessionLock);
 172         final var avatarStore = new AvatarStore(pathConfig.avatarsPath());
 173         final var attachmentStore = new AttachmentStore(pathConfig.attachmentsPath());
 174         final var stickerPackStore = new StickerPackStore(pathConfig.stickerPacksPath());
 175
 176         this.attachmentHelper = new AttachmentHelper(dependencies, attachmentStore);
 177         this.pinHelper = new PinHelper(dependencies.getKeyBackupService());
 178         final var unidentifiedAccessHelper = new UnidentifiedAccessHelper(account,
 179                 dependencies,
 180                 account::getProfileKey,
 181                 this::getRecipientProfile);
 182         this.profileHelper = new ProfileHelper(account,
 183                 dependencies,
 184                 avatarStore,
 185                 unidentifiedAccessHelper::getAccessFor,
 186                 this::resolveSignalServiceAddress);
 187         final GroupV2Helper groupV2Helper = new GroupV2Helper(profileHelper::getRecipientProfileKeyCredential,
 188                 this::getRecipientProfile,
 189                 account::getSelfRecipientId,
 190                 dependencies.getGroupsV2Operations(),
 191                 dependencies.getGroupsV2Api(),
 192                 this::resolveSignalServiceAddress);
 193         this.sendHelper = new SendHelper(account,
 194                 dependencies,
 195                 unidentifiedAccessHelper,
 196                 this::resolveSignalServiceAddress,
 197                 account.getRecipientStore(),
 198                 this::handleIdentityFailure,
 199                 this::getGroupInfo,
 200                 this::refreshRegisteredUser);
 201         this.groupHelper = new GroupHelper(account,
 202                 dependencies,
 203                 attachmentHelper,
 204                 sendHelper,
 205                 groupV2Helper,
 206                 avatarStore,
 207                 this::resolveSignalServiceAddress,
 208                 account.getRecipientStore());
 209         this.storageHelper = new StorageHelper(account, dependencies, groupHelper, profileHelper);
 210         this.contactHelper = new ContactHelper(account);
 211         this.syncHelper = new SyncHelper(account,
 212                 attachmentHelper,
 213                 sendHelper,
 214                 groupHelper,
 215                 avatarStore,
 216                 this::resolveSignalServiceAddress);
 217         preKeyHelper = new PreKeyHelper(account, dependencies);
 218
 219         this.context = new Context(account,
 220                 dependencies,
 221                 stickerPackStore,
 222                 sendHelper,
 223                 groupHelper,
 224                 syncHelper,
 225                 profileHelper,
 226                 storageHelper,
 227                 preKeyHelper);
 228         var jobExecutor = new JobExecutor(context);
 229
 230         this.incomingMessageHandler = new IncomingMessageHandler(account,
 231                 dependencies,
 232                 account.getRecipientStore(),
 233                 this::resolveSignalServiceAddress,
 234                 groupHelper,
 235                 contactHelper,
 236                 attachmentHelper,
 237                 syncHelper,
 238                 this::getRecipientProfile,
 239                 jobExecutor);
 240         this.identityHelper = new IdentityHelper(account,
 241                 dependencies,
 242                 this::resolveSignalServiceAddress,
 243                 syncHelper,
 244                 profileHelper);
 245     }
 246
 247     @Override
 248     public String getSelfNumber() {
 249         return account.getUsername();
 250     }
 251
 252     @Override
 253     public void checkAccountState() throws IOException {
 254         if (account.getLastReceiveTimestamp() == 0) {
 255             logger.info("The Signal protocol expects that incoming messages are regularly received.");
 256         } else {
 257             var diffInMilliseconds = System.currentTimeMillis() - account.getLastReceiveTimestamp();
 258             long days = TimeUnit.DAYS.convert(diffInMilliseconds, TimeUnit.MILLISECONDS);
 259             if (days > 7) {
 260                 logger.warn(
 261                         "Messages have been last received {} days ago. The Signal protocol expects that incoming messages are regularly received.",
 262                         days);
 263             }
 264         }
 265         preKeyHelper.refreshPreKeysIfNecessary();
 266         if (account.getUuid() == null) {
 267             account.setUuid(dependencies.getAccountManager().getOwnUuid());
 268         }
 269         updateAccountAttributes(null);
 270     }
 271
 272     /**
 273      * This is used for checking a set of phone numbers for registration on Signal
 274      *
 275      * @param numbers The set of phone number in question
 276      * @return A map of numbers to canonicalized number and uuid. If a number is not registered the uuid is null.
 277      * @throws IOException if its unable to get the contacts to check if they're registered
 278      */
 279     @Override
 280     public Map<String, Pair<String, UUID>> areUsersRegistered(Set<String> numbers) throws IOException {
 281         Map<String, String> canonicalizedNumbers = numbers.stream().collect(Collectors.toMap(n -> n, n -> {
 282             try {
 283                 return PhoneNumberFormatter.formatNumber(n, account.getUsername());
 284             } catch (InvalidNumberException e) {
 285                 return "";
 286             }
 287         }));
 288
 289         // Note "registeredUsers" has no optionals. It only gives us info on users who are registered
 290         var registeredUsers = getRegisteredUsers(canonicalizedNumbers.values()
 291                 .stream()
 292                 .filter(s -> !s.isEmpty())
 293                 .collect(Collectors.toSet()));
 294
 295         return numbers.stream().collect(Collectors.toMap(n -> n, n -> {
 296             final var number = canonicalizedNumbers.get(n);
 297             final var uuid = registeredUsers.get(number);
 298             return new Pair<>(number.isEmpty() ? null : number, uuid);
 299         }));
 300     }
 301
 302     @Override
 303     public void updateAccountAttributes(String deviceName) throws IOException {
 304         final String encryptedDeviceName;
 305         if (deviceName == null) {
 306             encryptedDeviceName = account.getEncryptedDeviceName();
 307         } else {
 308             final var privateKey = account.getIdentityKeyPair().getPrivateKey();
 309             encryptedDeviceName = DeviceNameUtil.encryptDeviceName(deviceName, privateKey);
 310             account.setEncryptedDeviceName(encryptedDeviceName);
 311         }
 312         dependencies.getAccountManager()
 313                 .setAccountAttributes(encryptedDeviceName,
 314                         null,
 315                         account.getLocalRegistrationId(),
 316                         true,
 317                         null,
 318                         account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 319                         account.getSelfUnidentifiedAccessKey(),
 320                         account.isUnrestrictedUnidentifiedAccess(),
 321                         capabilities,
 322                         account.isDiscoverableByPhoneNumber());
 323     }
 324
 325     @Override
 326     public void updateConfiguration(
 327             final Boolean readReceipts,
 328             final Boolean unidentifiedDeliveryIndicators,
 329             final Boolean typingIndicators,
 330             final Boolean linkPreviews
 331     ) throws IOException, NotMasterDeviceException {
 332         if (!account.isMasterDevice()) {
 333             throw new NotMasterDeviceException();
 334         }
 335
 336         final var configurationStore = account.getConfigurationStore();
 337         if (readReceipts != null) {
 338             configurationStore.setReadReceipts(readReceipts);
 339         }
 340         if (unidentifiedDeliveryIndicators != null) {
 341             configurationStore.setUnidentifiedDeliveryIndicators(unidentifiedDeliveryIndicators);
 342         }
 343         if (typingIndicators != null) {
 344             configurationStore.setTypingIndicators(typingIndicators);
 345         }
 346         if (linkPreviews != null) {
 347             configurationStore.setLinkPreviews(linkPreviews);
 348         }
 349         syncHelper.sendConfigurationMessage();
 350     }
 351
 352     /**
 353      * @param givenName  if null, the previous givenName will be kept
 354      * @param familyName if null, the previous familyName will be kept
 355      * @param about      if null, the previous about text will be kept
 356      * @param aboutEmoji if null, the previous about emoji will be kept
 357      * @param avatar     if avatar is null the image from the local avatar store is used (if present),
 358      */
 359     @Override
 360     public void setProfile(
 361             String givenName, final String familyName, String about, String aboutEmoji, java.util.Optional<File> avatar
 362     ) throws IOException {
 363         profileHelper.setProfile(givenName,
 364                 familyName,
 365                 about,
 366                 aboutEmoji,
 367                 avatar == null ? null : Optional.fromNullable(avatar.orElse(null)));
 368         syncHelper.sendSyncFetchProfileMessage();
 369     }
 370
 371     @Override
 372     public void unregister() throws IOException {
 373         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 374         // If this is the master device, other users can't send messages to this number anymore.
 375         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 376         dependencies.getAccountManager().setGcmId(Optional.absent());
 377
 378         account.setRegistered(false);
 379     }
 380
 381     @Override
 382     public void deleteAccount() throws IOException {
 383         try {
 384             pinHelper.removeRegistrationLockPin();
 385         } catch (UnauthenticatedResponseException e) {
 386             logger.warn("Failed to remove registration lock pin");
 387         }
 388         account.setRegistrationLockPin(null, null);
 389
 390         dependencies.getAccountManager().deleteAccount();
 391
 392         account.setRegistered(false);
 393     }
 394
 395     @Override
 396     public void submitRateLimitRecaptchaChallenge(String challenge, String captcha) throws IOException {
 397         dependencies.getAccountManager().submitRateLimitRecaptchaChallenge(challenge, captcha);
 398     }
 399
 400     @Override
 401     public List<Device> getLinkedDevices() throws IOException {
 402         var devices = dependencies.getAccountManager().getDevices();
 403         account.setMultiDevice(devices.size() > 1);
 404         var identityKey = account.getIdentityKeyPair().getPrivateKey();
 405         return devices.stream().map(d -> {
 406             String deviceName = d.getName();
 407             if (deviceName != null) {
 408                 try {
 409                     deviceName = DeviceNameUtil.decryptDeviceName(deviceName, identityKey);
 410                 } catch (IOException e) {
 411                     logger.debug("Failed to decrypt device name, maybe plain text?", e);
 412                 }
 413             }
 414             return new Device(d.getId(),
 415                     deviceName,
 416                     d.getCreated(),
 417                     d.getLastSeen(),
 418                     d.getId() == account.getDeviceId());
 419         }).collect(Collectors.toList());
 420     }
 421
 422     @Override
 423     public void removeLinkedDevices(long deviceId) throws IOException {
 424         dependencies.getAccountManager().removeDevice(deviceId);
 425         var devices = dependencies.getAccountManager().getDevices();
 426         account.setMultiDevice(devices.size() > 1);
 427     }
 428
 429     @Override
 430     public void addDeviceLink(URI linkUri) throws IOException, InvalidDeviceLinkException {
 431         var info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 432
 433         addDevice(info.deviceIdentifier(), info.deviceKey());
 434     }
 435
 436     private void addDevice(
 437             String deviceIdentifier, ECPublicKey deviceKey
 438     ) throws IOException, InvalidDeviceLinkException {
 439         var identityKeyPair = account.getIdentityKeyPair();
 440         var verificationCode = dependencies.getAccountManager().getNewDeviceVerificationCode();
 441
 442         try {
 443             dependencies.getAccountManager()
 444                     .addDevice(deviceIdentifier,
 445                             deviceKey,
 446                             identityKeyPair,
 447                             Optional.of(account.getProfileKey().serialize()),
 448                             verificationCode);
 449         } catch (InvalidKeyException e) {
 450             throw new InvalidDeviceLinkException("Invalid device link", e);
 451         }
 452         account.setMultiDevice(true);
 453     }
 454
 455     @Override
 456     public void setRegistrationLockPin(java.util.Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 457         if (!account.isMasterDevice()) {
 458             throw new RuntimeException("Only master device can set a PIN");
 459         }
 460         if (pin.isPresent()) {
 461             final var masterKey = account.getPinMasterKey() != null
 462                     ? account.getPinMasterKey()
 463                     : KeyUtils.createMasterKey();
 464
 465             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 466
 467             account.setRegistrationLockPin(pin.get(), masterKey);
 468         } else {
 469             // Remove KBS Pin
 470             pinHelper.removeRegistrationLockPin();
 471
 472             account.setRegistrationLockPin(null, null);
 473         }
 474     }
 475
 476     void refreshPreKeys() throws IOException {
 477         preKeyHelper.refreshPreKeys();
 478     }
 479
 480     @Override
 481     public Profile getRecipientProfile(RecipientIdentifier.Single recipient) throws IOException {
 482         return profileHelper.getRecipientProfile(resolveRecipient(recipient));
 483     }
 484
 485     private Profile getRecipientProfile(RecipientId recipientId) {
 486         return profileHelper.getRecipientProfile(recipientId);
 487     }
 488
 489     @Override
 490     public List<Group> getGroups() {
 491         return account.getGroupStore().getGroups().stream().map(this::toGroup).collect(Collectors.toList());
 492     }
 493
 494     private Group toGroup(final GroupInfo groupInfo) {
 495         if (groupInfo == null) {
 496             return null;
 497         }
 498
 499         return new Group(groupInfo.getGroupId(),
 500                 groupInfo.getTitle(),
 501                 groupInfo.getDescription(),
 502                 groupInfo.getGroupInviteLink(),
 503                 groupInfo.getMembers()
 504                         .stream()
 505                         .map(account.getRecipientStore()::resolveRecipientAddress)
 506                         .collect(Collectors.toSet()),
 507                 groupInfo.getPendingMembers()
 508                         .stream()
 509                         .map(account.getRecipientStore()::resolveRecipientAddress)
 510                         .collect(Collectors.toSet()),
 511                 groupInfo.getRequestingMembers()
 512                         .stream()
 513                         .map(account.getRecipientStore()::resolveRecipientAddress)
 514                         .collect(Collectors.toSet()),
 515                 groupInfo.getAdminMembers()
 516                         .stream()
 517                         .map(account.getRecipientStore()::resolveRecipientAddress)
 518                         .collect(Collectors.toSet()),
 519                 groupInfo.isBlocked(),
 520                 groupInfo.getMessageExpirationTimer(),
 521                 groupInfo.getPermissionAddMember(),
 522                 groupInfo.getPermissionEditDetails(),
 523                 groupInfo.getPermissionSendMessage(),
 524                 groupInfo.isMember(account.getSelfRecipientId()),
 525                 groupInfo.isAdmin(account.getSelfRecipientId()));
 526     }
 527
 528     @Override
 529     public SendGroupMessageResults quitGroup(
 530             GroupId groupId, Set<RecipientIdentifier.Single> groupAdmins
 531     ) throws GroupNotFoundException, IOException, NotAGroupMemberException, LastGroupAdminException {
 532         final var newAdmins = resolveRecipients(groupAdmins);
 533         return groupHelper.quitGroup(groupId, newAdmins);
 534     }
 535
 536     @Override
 537     public void deleteGroup(GroupId groupId) throws IOException {
 538         groupHelper.deleteGroup(groupId);
 539     }
 540
 541     @Override
 542     public Pair<GroupId, SendGroupMessageResults> createGroup(
 543             String name, Set<RecipientIdentifier.Single> members, File avatarFile
 544     ) throws IOException, AttachmentInvalidException {
 545         return groupHelper.createGroup(name, members == null ? null : resolveRecipients(members), avatarFile);
 546     }
 547
 548     @Override
 549     public SendGroupMessageResults updateGroup(
 550             final GroupId groupId, final UpdateGroup updateGroup
 551     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException, GroupSendingNotAllowedException {
 552         return groupHelper.updateGroup(groupId,
 553                 updateGroup.getName(),
 554                 updateGroup.getDescription(),
 555                 updateGroup.getMembers() == null ? null : resolveRecipients(updateGroup.getMembers()),
 556                 updateGroup.getRemoveMembers() == null ? null : resolveRecipients(updateGroup.getRemoveMembers()),
 557                 updateGroup.getAdmins() == null ? null : resolveRecipients(updateGroup.getAdmins()),
 558                 updateGroup.getRemoveAdmins() == null ? null : resolveRecipients(updateGroup.getRemoveAdmins()),
 559                 updateGroup.isResetGroupLink(),
 560                 updateGroup.getGroupLinkState(),
 561                 updateGroup.getAddMemberPermission(),
 562                 updateGroup.getEditDetailsPermission(),
 563                 updateGroup.getAvatarFile(),
 564                 updateGroup.getExpirationTimer(),
 565                 updateGroup.getIsAnnouncementGroup());
 566     }
 567
 568     @Override
 569     public Pair<GroupId, SendGroupMessageResults> joinGroup(
 570             GroupInviteLinkUrl inviteLinkUrl
 571     ) throws IOException, InactiveGroupLinkException {
 572         return groupHelper.joinGroup(inviteLinkUrl);
 573     }
 574
 575     private SendMessageResults sendMessage(
 576             SignalServiceDataMessage.Builder messageBuilder, Set<RecipientIdentifier> recipients
 577     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 578         var results = new HashMap<RecipientIdentifier, List<SendMessageResult>>();
 579         long timestamp = System.currentTimeMillis();
 580         messageBuilder.withTimestamp(timestamp);
 581         for (final var recipient : recipients) {
 582             if (recipient instanceof RecipientIdentifier.Single single) {
 583                 final var recipientId = resolveRecipient(single);
 584                 final var result = sendHelper.sendMessage(messageBuilder, recipientId);
 585                 results.put(recipient, List.of(result));
 586             } else if (recipient instanceof RecipientIdentifier.NoteToSelf) {
 587                 final var result = sendHelper.sendSelfMessage(messageBuilder);
 588                 results.put(recipient, List.of(result));
 589             } else if (recipient instanceof RecipientIdentifier.Group group) {
 590                 final var result = sendHelper.sendAsGroupMessage(messageBuilder, group.groupId);
 591                 results.put(recipient, result);
 592             }
 593         }
 594         return new SendMessageResults(timestamp, results);
 595     }
 596
 597     private void sendTypingMessage(
 598             SignalServiceTypingMessage.Action action, Set<RecipientIdentifier> recipients
 599     ) throws IOException, UntrustedIdentityException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 600         final var timestamp = System.currentTimeMillis();
 601         for (var recipient : recipients) {
 602             if (recipient instanceof RecipientIdentifier.Single) {
 603                 final var message = new SignalServiceTypingMessage(action, timestamp, Optional.absent());
 604                 final var recipientId = resolveRecipient((RecipientIdentifier.Single) recipient);
 605                 sendHelper.sendTypingMessage(message, recipientId);
 606             } else if (recipient instanceof RecipientIdentifier.Group) {
 607                 final var groupId = ((RecipientIdentifier.Group) recipient).groupId;
 608                 final var message = new SignalServiceTypingMessage(action, timestamp, Optional.of(groupId.serialize()));
 609                 sendHelper.sendGroupTypingMessage(message, groupId);
 610             }
 611         }
 612     }
 613
 614     @Override
 615     public void sendTypingMessage(
 616             TypingAction action, Set<RecipientIdentifier> recipients
 617     ) throws IOException, UntrustedIdentityException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 618         sendTypingMessage(action.toSignalService(), recipients);
 619     }
 620
 621     @Override
 622     public void sendReadReceipt(
 623             RecipientIdentifier.Single sender, List<Long> messageIds
 624     ) throws IOException, UntrustedIdentityException {
 625         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.READ,
 626                 messageIds,
 627                 System.currentTimeMillis());
 628
 629         sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(sender));
 630     }
 631
 632     @Override
 633     public void sendViewedReceipt(
 634             RecipientIdentifier.Single sender, List<Long> messageIds
 635     ) throws IOException, UntrustedIdentityException {
 636         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.VIEWED,
 637                 messageIds,
 638                 System.currentTimeMillis());
 639
 640         sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(sender));
 641     }
 642
 643     @Override
 644     public SendMessageResults sendMessage(
 645             Message message, Set<RecipientIdentifier> recipients
 646     ) throws IOException, AttachmentInvalidException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 647         final var messageBuilder = SignalServiceDataMessage.newBuilder();
 648         applyMessage(messageBuilder, message);
 649         return sendMessage(messageBuilder, recipients);
 650     }
 651
 652     private void applyMessage(
 653             final SignalServiceDataMessage.Builder messageBuilder, final Message message
 654     ) throws AttachmentInvalidException, IOException {
 655         messageBuilder.withBody(message.messageText());
 656         final var attachments = message.attachments();
 657         if (attachments != null) {
 658             messageBuilder.withAttachments(attachmentHelper.uploadAttachments(attachments));
 659         }
 660     }
 661
 662     @Override
 663     public SendMessageResults sendRemoteDeleteMessage(
 664             long targetSentTimestamp, Set<RecipientIdentifier> recipients
 665     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 666         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
 667         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
 668         return sendMessage(messageBuilder, recipients);
 669     }
 670
 671     @Override
 672     public SendMessageResults sendMessageReaction(
 673             String emoji,
 674             boolean remove,
 675             RecipientIdentifier.Single targetAuthor,
 676             long targetSentTimestamp,
 677             Set<RecipientIdentifier> recipients
 678     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 679         var targetAuthorRecipientId = resolveRecipient(targetAuthor);
 680         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 681                 remove,
 682                 resolveSignalServiceAddress(targetAuthorRecipientId),
 683                 targetSentTimestamp);
 684         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
 685         return sendMessage(messageBuilder, recipients);
 686     }
 687
 688     @Override
 689     public SendMessageResults sendEndSessionMessage(Set<RecipientIdentifier.Single> recipients) throws IOException {
 690         var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
 691
 692         try {
 693             return sendMessage(messageBuilder,
 694                     recipients.stream().map(RecipientIdentifier.class::cast).collect(Collectors.toSet()));
 695         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 696             throw new AssertionError(e);
 697         } finally {
 698             for (var recipient : recipients) {
 699                 final var recipientId = resolveRecipient(recipient);
 700                 account.getSessionStore().deleteAllSessions(recipientId);
 701             }
 702         }
 703     }
 704
 705     @Override
 706     public void setContactName(
 707             RecipientIdentifier.Single recipient, String name
 708     ) throws NotMasterDeviceException, IOException {
 709         if (!account.isMasterDevice()) {
 710             throw new NotMasterDeviceException();
 711         }
 712         contactHelper.setContactName(resolveRecipient(recipient), name);
 713     }
 714
 715     @Override
 716     public void setContactBlocked(
 717             RecipientIdentifier.Single recipient, boolean blocked
 718     ) throws NotMasterDeviceException, IOException {
 719         if (!account.isMasterDevice()) {
 720             throw new NotMasterDeviceException();
 721         }
 722         contactHelper.setContactBlocked(resolveRecipient(recipient), blocked);
 723         // TODO cycle our profile key
 724         syncHelper.sendBlockedList();
 725     }
 726
 727     @Override
 728     public void setGroupBlocked(
 729             final GroupId groupId, final boolean blocked
 730     ) throws GroupNotFoundException, IOException, NotMasterDeviceException {
 731         if (!account.isMasterDevice()) {
 732             throw new NotMasterDeviceException();
 733         }
 734         groupHelper.setGroupBlocked(groupId, blocked);
 735         // TODO cycle our profile key
 736         syncHelper.sendBlockedList();
 737     }
 738
 739     /**
 740      * Change the expiration timer for a contact
 741      */
 742     @Override
 743     public void setExpirationTimer(
 744             RecipientIdentifier.Single recipient, int messageExpirationTimer
 745     ) throws IOException {
 746         var recipientId = resolveRecipient(recipient);
 747         contactHelper.setExpirationTimer(recipientId, messageExpirationTimer);
 748         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
 749         try {
 750             sendMessage(messageBuilder, Set.of(recipient));
 751         } catch (NotAGroupMemberException | GroupNotFoundException | GroupSendingNotAllowedException e) {
 752             throw new AssertionError(e);
 753         }
 754     }
 755
 756     /**
 757      * Upload the sticker pack from path.
 758      *
 759      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 760      * @return if successful, returns the URL to install the sticker pack in the signal app
 761      */
 762     @Override
 763     public URI uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
 764         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
 765
 766         var messageSender = dependencies.getMessageSender();
 767
 768         var packKey = KeyUtils.createStickerUploadKey();
 769         var packIdString = messageSender.uploadStickerManifest(manifest, packKey);
 770         var packId = StickerPackId.deserialize(Hex.fromStringCondensed(packIdString));
 771
 772         var sticker = new Sticker(packId, packKey);
 773         account.getStickerStore().updateSticker(sticker);
 774
 775         try {
 776             return new URI("https",
 777                     "signal.art",
 778                     "/addstickers/",
 779                     "pack_id="
 780                             + URLEncoder.encode(Hex.toStringCondensed(packId.serialize()), StandardCharsets.UTF_8)
 781                             + "&pack_key="
 782                             + URLEncoder.encode(Hex.toStringCondensed(packKey), StandardCharsets.UTF_8));
 783         } catch (URISyntaxException e) {
 784             throw new AssertionError(e);
 785         }
 786     }
 787
 788     @Override
 789     public void requestAllSyncData() throws IOException {
 790         syncHelper.requestAllSyncData();
 791         retrieveRemoteStorage();
 792     }
 793
 794     void retrieveRemoteStorage() throws IOException {
 795         if (account.getStorageKey() != null) {
 796             storageHelper.readDataFromStorage();
 797         }
 798     }
 799
 800     private RecipientId refreshRegisteredUser(RecipientId recipientId) throws IOException {
 801         final var address = resolveSignalServiceAddress(recipientId);
 802         if (!address.getNumber().isPresent()) {
 803             return recipientId;
 804         }
 805         final var number = address.getNumber().get();
 806         final var uuid = getRegisteredUser(number);
 807         return resolveRecipientTrusted(new SignalServiceAddress(uuid, number));
 808     }
 809
 810     private UUID getRegisteredUser(final String number) throws IOException {
 811         final Map<String, UUID> uuidMap;
 812         try {
 813             uuidMap = getRegisteredUsers(Set.of(number));
 814         } catch (NumberFormatException e) {
 815             throw new IOException(number, e);
 816         }
 817         final var uuid = uuidMap.get(number);
 818         if (uuid == null) {
 819             throw new IOException(number, null);
 820         }
 821         return uuid;
 822     }
 823
 824     private Map<String, UUID> getRegisteredUsers(final Set<String> numbers) throws IOException {
 825         final Map<String, UUID> registeredUsers;
 826         try {
 827             registeredUsers = dependencies.getAccountManager()
 828                     .getRegisteredUsers(ServiceConfig.getIasKeyStore(),
 829                             numbers,
 830                             serviceEnvironmentConfig.getCdsMrenclave());
 831         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
 832             throw new IOException(e);
 833         }
 834
 835         // Store numbers as recipients so we have the number/uuid association
 836         registeredUsers.forEach((number, uuid) -> resolveRecipientTrusted(new SignalServiceAddress(uuid, number)));
 837
 838         return registeredUsers;
 839     }
 840
 841     private void retryFailedReceivedMessages(ReceiveMessageHandler handler) {
 842         Set<HandleAction> queuedActions = new HashSet<>();
 843         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
 844             var actions = retryFailedReceivedMessage(handler, cachedMessage);
 845             if (actions != null) {
 846                 queuedActions.addAll(actions);
 847             }
 848         }
 849         handleQueuedActions(queuedActions);
 850     }
 851
 852     private List<HandleAction> retryFailedReceivedMessage(
 853             final ReceiveMessageHandler handler, final CachedMessage cachedMessage
 854     ) {
 855         var envelope = cachedMessage.loadEnvelope();
 856         if (envelope == null) {
 857             cachedMessage.delete();
 858             return null;
 859         }
 860
 861         final var result = incomingMessageHandler.handleRetryEnvelope(envelope, ignoreAttachments, handler);
 862         final var actions = result.first();
 863         final var exception = result.second();
 864
 865         if (exception instanceof UntrustedIdentityException) {
 866             if (System.currentTimeMillis() - envelope.getServerDeliveredTimestamp() > 1000L * 60 * 60 * 24 * 30) {
 867                 // Envelope is more than a month old, cleaning up.
 868                 cachedMessage.delete();
 869                 return null;
 870             }
 871             if (!envelope.hasSourceUuid()) {
 872                 final var identifier = ((UntrustedIdentityException) exception).getSender();
 873                 final var recipientId = account.getRecipientStore().resolveRecipient(identifier);
 874                 try {
 875                     account.getMessageCache().replaceSender(cachedMessage, recipientId);
 876                 } catch (IOException ioException) {
 877                     logger.warn("Failed to move cached message to recipient folder: {}", ioException.getMessage());
 878                 }
 879             }
 880             return null;
 881         }
 882
 883         // If successful and for all other errors that are not recoverable, delete the cached message
 884         cachedMessage.delete();
 885         return actions;
 886     }
 887
 888     @Override
 889     public void addReceiveHandler(final ReceiveMessageHandler handler) {
 890         if (isReceivingSynchronous) {
 891             throw new IllegalStateException("Already receiving message synchronously.");
 892         }
 893         synchronized (messageHandlers) {
 894             messageHandlers.add(handler);
 895
 896             startReceiveThreadIfRequired();
 897         }
 898     }
 899
 900     private void startReceiveThreadIfRequired() {
 901         if (receiveThread != null) {
 902             return;
 903         }
 904         receiveThread = new Thread(() -> {
 905             while (!Thread.interrupted()) {
 906                 try {
 907                     receiveMessagesInternal(1L, TimeUnit.HOURS, false, (envelope, decryptedContent, e) -> {
 908                         synchronized (messageHandlers) {
 909                             for (ReceiveMessageHandler h : messageHandlers) {
 910                                 try {
 911                                     h.handleMessage(envelope, decryptedContent, e);
 912                                 } catch (Exception ex) {
 913                                     logger.warn("Message handler failed, ignoring", ex);
 914                                 }
 915                             }
 916                         }
 917                     });
 918                     break;
 919                 } catch (IOException e) {
 920                     logger.warn("Receiving messages failed, retrying", e);
 921                 }
 922             }
 923             hasCaughtUpWithOldMessages = false;
 924             synchronized (messageHandlers) {
 925                 receiveThread = null;
 926
 927                 // Check if in the meantime another handler has been registered
 928                 if (!messageHandlers.isEmpty()) {
 929                     startReceiveThreadIfRequired();
 930                 }
 931             }
 932         });
 933
 934         receiveThread.start();
 935     }
 936
 937     @Override
 938     public void removeReceiveHandler(final ReceiveMessageHandler handler) {
 939         final Thread thread;
 940         synchronized (messageHandlers) {
 941             thread = receiveThread;
 942             receiveThread = null;
 943             messageHandlers.remove(handler);
 944             if (!messageHandlers.isEmpty() || isReceivingSynchronous) {
 945                 return;
 946             }
 947         }
 948
 949         stopReceiveThread(thread);
 950     }
 951
 952     private void stopReceiveThread(final Thread thread) {
 953         thread.interrupt();
 954         try {
 955             thread.join();
 956         } catch (InterruptedException ignored) {
 957         }
 958     }
 959
 960     @Override
 961     public boolean isReceiving() {
 962         if (isReceivingSynchronous) {
 963             return true;
 964         }
 965         synchronized (messageHandlers) {
 966             return messageHandlers.size() > 0;
 967         }
 968     }
 969
 970     @Override
 971     public void receiveMessages(long timeout, TimeUnit unit, ReceiveMessageHandler handler) throws IOException {
 972         receiveMessages(timeout, unit, true, handler);
 973     }
 974
 975     @Override
 976     public void receiveMessages(ReceiveMessageHandler handler) throws IOException {
 977         receiveMessages(1L, TimeUnit.HOURS, false, handler);
 978     }
 979
 980     private void receiveMessages(
 981             long timeout, TimeUnit unit, boolean returnOnTimeout, ReceiveMessageHandler handler
 982     ) throws IOException {
 983         if (isReceiving()) {
 984             throw new IllegalStateException("Already receiving message.");
 985         }
 986         isReceivingSynchronous = true;
 987         receiveThread = Thread.currentThread();
 988         try {
 989             receiveMessagesInternal(timeout, unit, returnOnTimeout, handler);
 990         } finally {
 991             receiveThread = null;
 992             hasCaughtUpWithOldMessages = false;
 993             isReceivingSynchronous = false;
 994         }
 995     }
 996
 997     private void receiveMessagesInternal(
 998             long timeout, TimeUnit unit, boolean returnOnTimeout, ReceiveMessageHandler handler
 999     ) throws IOException {
1000         retryFailedReceivedMessages(handler);
1001
1002         Set<HandleAction> queuedActions = new HashSet<>();
1003
1004         final var signalWebSocket = dependencies.getSignalWebSocket();
1005         signalWebSocket.connect();
1006
1007         hasCaughtUpWithOldMessages = false;
1008         var backOffCounter = 0;
1009         final var MAX_BACKOFF_COUNTER = 9;
1010
1011         while (!Thread.interrupted()) {
1012             SignalServiceEnvelope envelope;
1013             final CachedMessage[] cachedMessage = {null};
1014             account.setLastReceiveTimestamp(System.currentTimeMillis());
1015             logger.debug("Checking for new message from server");
1016             try {
1017                 var result = signalWebSocket.readOrEmpty(unit.toMillis(timeout), envelope1 -> {
1018                     final var recipientId = envelope1.hasSourceUuid()
1019                             ? resolveRecipient(envelope1.getSourceAddress())
1020                             : null;
1021                     // store message on disk, before acknowledging receipt to the server
1022                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1, recipientId);
1023                 });
1024                 backOffCounter = 0;
1025
1026                 if (result.isPresent()) {
1027                     envelope = result.get();
1028                     logger.debug("New message received from server");
1029                 } else {
1030                     logger.debug("Received indicator that server queue is empty");
1031                     handleQueuedActions(queuedActions);
1032                     queuedActions.clear();
1033
1034                     hasCaughtUpWithOldMessages = true;
1035                     synchronized (this) {
1036                         this.notifyAll();
1037                     }
1038
1039                     // Continue to wait another timeout for new messages
1040                     continue;
1041                 }
1042             } catch (AssertionError e) {
1043                 if (e.getCause() instanceof InterruptedException) {
1044                     Thread.currentThread().interrupt();
1045                     break;
1046                 } else {
1047                     throw e;
1048                 }
1049             } catch (IOException e) {
1050                 logger.debug("Pipe unexpectedly unavailable: {}", e.getMessage());
1051                 if (e instanceof WebSocketUnavailableException || "Connection closed!".equals(e.getMessage())) {
1052                     final var sleepMilliseconds = 100 * (long) Math.pow(2, backOffCounter);
1053                     backOffCounter = Math.min(backOffCounter + 1, MAX_BACKOFF_COUNTER);
1054                     logger.warn("Connection closed unexpectedly, reconnecting in {} ms", sleepMilliseconds);
1055                     try {
1056                         Thread.sleep(sleepMilliseconds);
1057                     } catch (InterruptedException interruptedException) {
1058                         return;
1059                     }
1060                     hasCaughtUpWithOldMessages = false;
1061                     signalWebSocket.connect();
1062                     continue;
1063                 }
1064                 throw e;
1065             } catch (TimeoutException e) {
1066                 backOffCounter = 0;
1067                 if (returnOnTimeout) return;
1068                 continue;
1069             }
1070
1071             final var result = incomingMessageHandler.handleEnvelope(envelope, ignoreAttachments, handler);
1072             queuedActions.addAll(result.first());
1073             final var exception = result.second();
1074
1075             if (hasCaughtUpWithOldMessages) {
1076                 handleQueuedActions(queuedActions);
1077                 queuedActions.clear();
1078             }
1079             if (cachedMessage[0] != null) {
1080                 if (exception instanceof UntrustedIdentityException) {
1081                     logger.debug("Keeping message with untrusted identity in message cache");
1082                     final var address = ((UntrustedIdentityException) exception).getSender();
1083                     final var recipientId = resolveRecipient(address);
1084                     if (!envelope.hasSourceUuid()) {
1085                         try {
1086                             cachedMessage[0] = account.getMessageCache().replaceSender(cachedMessage[0], recipientId);
1087                         } catch (IOException ioException) {
1088                             logger.warn("Failed to move cached message to recipient folder: {}",
1089                                     ioException.getMessage());
1090                         }
1091                     }
1092                 } else {
1093                     cachedMessage[0].delete();
1094                 }
1095             }
1096         }
1097         handleQueuedActions(queuedActions);
1098         queuedActions.clear();
1099     }
1100
1101     @Override
1102     public void setIgnoreAttachments(final boolean ignoreAttachments) {
1103         this.ignoreAttachments = ignoreAttachments;
1104     }
1105
1106     @Override
1107     public boolean hasCaughtUpWithOldMessages() {
1108         return hasCaughtUpWithOldMessages;
1109     }
1110
1111     private void handleQueuedActions(final Collection<HandleAction> queuedActions) {
1112         logger.debug("Handling message actions");
1113         var interrupted = false;
1114         for (var action : queuedActions) {
1115             try {
1116                 action.execute(context);
1117             } catch (Throwable e) {
1118                 if ((e instanceof AssertionError || e instanceof RuntimeException)
1119                         && e.getCause() instanceof InterruptedException) {
1120                     interrupted = true;
1121                     continue;
1122                 }
1123                 logger.warn("Message action failed.", e);
1124             }
1125         }
1126         if (interrupted) {
1127             Thread.currentThread().interrupt();
1128         }
1129     }
1130
1131     @Override
1132     public boolean isContactBlocked(final RecipientIdentifier.Single recipient) {
1133         final RecipientId recipientId;
1134         try {
1135             recipientId = resolveRecipient(recipient);
1136         } catch (IOException e) {
1137             return false;
1138         }
1139         return contactHelper.isContactBlocked(recipientId);
1140     }
1141
1142     @Override
1143     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1144         return attachmentHelper.getAttachmentFile(attachmentId);
1145     }
1146
1147     @Override
1148     public void sendContacts() throws IOException {
1149         syncHelper.sendContacts();
1150     }
1151
1152     @Override
1153     public List<Pair<RecipientAddress, Contact>> getContacts() {
1154         return account.getContactStore()
1155                 .getContacts()
1156                 .stream()
1157                 .map(p -> new Pair<>(account.getRecipientStore().resolveRecipientAddress(p.first()), p.second()))
1158                 .collect(Collectors.toList());
1159     }
1160
1161     @Override
1162     public String getContactOrProfileName(RecipientIdentifier.Single recipient) {
1163         final RecipientId recipientId;
1164         try {
1165             recipientId = resolveRecipient(recipient);
1166         } catch (IOException e) {
1167             return null;
1168         }
1169
1170         final var contact = account.getContactStore().getContact(recipientId);
1171         if (contact != null && !Util.isEmpty(contact.getName())) {
1172             return contact.getName();
1173         }
1174
1175         final var profile = getRecipientProfile(recipientId);
1176         if (profile != null) {
1177             return profile.getDisplayName();
1178         }
1179
1180         return null;
1181     }
1182
1183     @Override
1184     public Group getGroup(GroupId groupId) {
1185         return toGroup(groupHelper.getGroup(groupId));
1186     }
1187
1188     private GroupInfo getGroupInfo(GroupId groupId) {
1189         return groupHelper.getGroup(groupId);
1190     }
1191
1192     @Override
1193     public List<Identity> getIdentities() {
1194         return account.getIdentityKeyStore()
1195                 .getIdentities()
1196                 .stream()
1197                 .map(this::toIdentity)
1198                 .collect(Collectors.toList());
1199     }
1200
1201     private Identity toIdentity(final IdentityInfo identityInfo) {
1202         if (identityInfo == null) {
1203             return null;
1204         }
1205
1206         final var address = account.getRecipientStore().resolveRecipientAddress(identityInfo.getRecipientId());
1207         final var scannableFingerprint = identityHelper.computeSafetyNumberForScanning(identityInfo.getRecipientId(),
1208                 identityInfo.getIdentityKey());
1209         return new Identity(address,
1210                 identityInfo.getIdentityKey(),
1211                 identityHelper.computeSafetyNumber(identityInfo.getRecipientId(), identityInfo.getIdentityKey()),
1212                 scannableFingerprint == null ? null : scannableFingerprint.getSerialized(),
1213                 identityInfo.getTrustLevel(),
1214                 identityInfo.getDateAdded());
1215     }
1216
1217     @Override
1218     public List<Identity> getIdentities(RecipientIdentifier.Single recipient) {
1219         IdentityInfo identity;
1220         try {
1221             identity = account.getIdentityKeyStore().getIdentity(resolveRecipient(recipient));
1222         } catch (IOException e) {
1223             identity = null;
1224         }
1225         return identity == null ? List.of() : List.of(toIdentity(identity));
1226     }
1227
1228     /**
1229      * Trust this the identity with this fingerprint
1230      *
1231      * @param recipient   username of the identity
1232      * @param fingerprint Fingerprint
1233      */
1234     @Override
1235     public boolean trustIdentityVerified(RecipientIdentifier.Single recipient, byte[] fingerprint) {
1236         RecipientId recipientId;
1237         try {
1238             recipientId = resolveRecipient(recipient);
1239         } catch (IOException e) {
1240             return false;
1241         }
1242         return identityHelper.trustIdentityVerified(recipientId, fingerprint);
1243     }
1244
1245     /**
1246      * Trust this the identity with this safety number
1247      *
1248      * @param recipient    username of the identity
1249      * @param safetyNumber Safety number
1250      */
1251     @Override
1252     public boolean trustIdentityVerifiedSafetyNumber(RecipientIdentifier.Single recipient, String safetyNumber) {
1253         RecipientId recipientId;
1254         try {
1255             recipientId = resolveRecipient(recipient);
1256         } catch (IOException e) {
1257             return false;
1258         }
1259         return identityHelper.trustIdentityVerifiedSafetyNumber(recipientId, safetyNumber);
1260     }
1261
1262     /**
1263      * Trust this the identity with this scannable safety number
1264      *
1265      * @param recipient    username of the identity
1266      * @param safetyNumber Scannable safety number
1267      */
1268     @Override
1269     public boolean trustIdentityVerifiedSafetyNumber(RecipientIdentifier.Single recipient, byte[] safetyNumber) {
1270         RecipientId recipientId;
1271         try {
1272             recipientId = resolveRecipient(recipient);
1273         } catch (IOException e) {
1274             return false;
1275         }
1276         return identityHelper.trustIdentityVerifiedSafetyNumber(recipientId, safetyNumber);
1277     }
1278
1279     /**
1280      * Trust all keys of this identity without verification
1281      *
1282      * @param recipient username of the identity
1283      */
1284     @Override
1285     public boolean trustIdentityAllKeys(RecipientIdentifier.Single recipient) {
1286         RecipientId recipientId;
1287         try {
1288             recipientId = resolveRecipient(recipient);
1289         } catch (IOException e) {
1290             return false;
1291         }
1292         return identityHelper.trustIdentityAllKeys(recipientId);
1293     }
1294
1295     private void handleIdentityFailure(
1296             final RecipientId recipientId, final SendMessageResult.IdentityFailure identityFailure
1297     ) {
1298         this.identityHelper.handleIdentityFailure(recipientId, identityFailure);
1299     }
1300
1301     @Override
1302     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
1303         return resolveSignalServiceAddress(resolveRecipient(address));
1304     }
1305
1306     private SignalServiceAddress resolveSignalServiceAddress(RecipientId recipientId) {
1307         final var address = account.getRecipientStore().resolveRecipientAddress(recipientId);
1308         if (address.getUuid().isPresent()) {
1309             return address.toSignalServiceAddress();
1310         }
1311
1312         // Address in recipient store doesn't have a uuid, this shouldn't happen
1313         // Try to retrieve the uuid from the server
1314         final var number = address.getNumber().get();
1315         final UUID uuid;
1316         try {
1317             uuid = getRegisteredUser(number);
1318         } catch (IOException e) {
1319             logger.warn("Failed to get uuid for e164 number: {}", number, e);
1320             // Return SignalServiceAddress with unknown UUID
1321             return address.toSignalServiceAddress();
1322         }
1323         return resolveSignalServiceAddress(account.getRecipientStore().resolveRecipient(uuid));
1324     }
1325
1326     private Set<RecipientId> resolveRecipients(Collection<RecipientIdentifier.Single> recipients) throws IOException {
1327         final var recipientIds = new HashSet<RecipientId>(recipients.size());
1328         for (var number : recipients) {
1329             final var recipientId = resolveRecipient(number);
1330             recipientIds.add(recipientId);
1331         }
1332         return recipientIds;
1333     }
1334
1335     private RecipientId resolveRecipient(final RecipientIdentifier.Single recipient) throws IOException {
1336         if (recipient instanceof RecipientIdentifier.Uuid) {
1337             return account.getRecipientStore().resolveRecipient(((RecipientIdentifier.Uuid) recipient).uuid);
1338         } else {
1339             final var number = ((RecipientIdentifier.Number) recipient).number;
1340             return account.getRecipientStore().resolveRecipient(number, () -> {
1341                 try {
1342                     return getRegisteredUser(number);
1343                 } catch (IOException e) {
1344                     return null;
1345                 }
1346             });
1347         }
1348     }
1349
1350     private RecipientId resolveRecipient(SignalServiceAddress address) {
1351         return account.getRecipientStore().resolveRecipient(address);
1352     }
1353
1354     private RecipientId resolveRecipientTrusted(SignalServiceAddress address) {
1355         return account.getRecipientStore().resolveRecipientTrusted(address);
1356     }
1357
1358     @Override
1359     public void close() throws IOException {
1360         close(true);
1361     }
1362
1363     private void close(boolean closeAccount) throws IOException {
1364         Thread thread;
1365         synchronized (messageHandlers) {
1366             messageHandlers.clear();
1367             thread = receiveThread;
1368             receiveThread = null;
1369         }
1370         if (thread != null) {
1371             stopReceiveThread(thread);
1372         }
1373         executor.shutdown();
1374
1375         dependencies.getSignalWebSocket().disconnect();
1376
1377         if (closeAccount && account != null) {
1378             account.close();
1379         }
1380         account = null;
1381     }
1382 }