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.Message;
  24 import org.asamk.signal.manager.api.RecipientIdentifier;
  25 import org.asamk.signal.manager.api.SendGroupMessageResults;
  26 import org.asamk.signal.manager.api.SendMessageResults;
  27 import org.asamk.signal.manager.api.TypingAction;
  28 import org.asamk.signal.manager.api.UpdateGroup;
  29 import org.asamk.signal.manager.config.ServiceConfig;
  30 import org.asamk.signal.manager.config.ServiceEnvironmentConfig;
  31 import org.asamk.signal.manager.groups.GroupId;
  32 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  33 import org.asamk.signal.manager.groups.GroupNotFoundException;
  34 import org.asamk.signal.manager.groups.GroupSendingNotAllowedException;
  35 import org.asamk.signal.manager.groups.LastGroupAdminException;
  36 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  37 import org.asamk.signal.manager.helper.AttachmentHelper;
  38 import org.asamk.signal.manager.helper.ContactHelper;
  39 import org.asamk.signal.manager.helper.GroupHelper;
  40 import org.asamk.signal.manager.helper.GroupV2Helper;
  41 import org.asamk.signal.manager.helper.IdentityHelper;
  42 import org.asamk.signal.manager.helper.IncomingMessageHandler;
  43 import org.asamk.signal.manager.helper.PinHelper;
  44 import org.asamk.signal.manager.helper.PreKeyHelper;
  45 import org.asamk.signal.manager.helper.ProfileHelper;
  46 import org.asamk.signal.manager.helper.SendHelper;
  47 import org.asamk.signal.manager.helper.StorageHelper;
  48 import org.asamk.signal.manager.helper.SyncHelper;
  49 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  50 import org.asamk.signal.manager.jobs.Context;
  51 import org.asamk.signal.manager.storage.SignalAccount;
  52 import org.asamk.signal.manager.storage.groups.GroupInfo;
  53 import org.asamk.signal.manager.storage.identities.IdentityInfo;
  54 import org.asamk.signal.manager.storage.messageCache.CachedMessage;
  55 import org.asamk.signal.manager.storage.recipients.Contact;
  56 import org.asamk.signal.manager.storage.recipients.Profile;
  57 import org.asamk.signal.manager.storage.recipients.RecipientAddress;
  58 import org.asamk.signal.manager.storage.recipients.RecipientId;
  59 import org.asamk.signal.manager.storage.stickers.Sticker;
  60 import org.asamk.signal.manager.storage.stickers.StickerPackId;
  61 import org.asamk.signal.manager.util.KeyUtils;
  62 import org.asamk.signal.manager.util.StickerUtils;
  63 import org.slf4j.Logger;
  64 import org.slf4j.LoggerFactory;
  65 import org.whispersystems.libsignal.InvalidKeyException;
  66 import org.whispersystems.libsignal.ecc.ECPublicKey;
  67 import org.whispersystems.libsignal.util.Pair;
  68 import org.whispersystems.libsignal.util.guava.Optional;
  69 import org.whispersystems.signalservice.api.SignalSessionLock;
  70 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  71 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  72 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  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.push.exceptions.UnregisteredUserException;
  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.getAvatarsPath());
 173         final var attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
 174         final var stickerPackStore = new StickerPackStore(pathConfig.getStickerPacksPath());
 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, Optional<File> avatar
 362     ) throws IOException {
 363         profileHelper.setProfile(givenName, familyName, about, aboutEmoji, avatar);
 364         syncHelper.sendSyncFetchProfileMessage();
 365     }
 366
 367     @Override
 368     public void unregister() throws IOException {
 369         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 370         // If this is the master device, other users can't send messages to this number anymore.
 371         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 372         dependencies.getAccountManager().setGcmId(Optional.absent());
 373
 374         account.setRegistered(false);
 375     }
 376
 377     @Override
 378     public void deleteAccount() throws IOException {
 379         try {
 380             pinHelper.removeRegistrationLockPin();
 381         } catch (UnauthenticatedResponseException e) {
 382             logger.warn("Failed to remove registration lock pin");
 383         }
 384         account.setRegistrationLockPin(null, null);
 385
 386         dependencies.getAccountManager().deleteAccount();
 387
 388         account.setRegistered(false);
 389     }
 390
 391     @Override
 392     public void submitRateLimitRecaptchaChallenge(String challenge, String captcha) throws IOException {
 393         dependencies.getAccountManager().submitRateLimitRecaptchaChallenge(challenge, captcha);
 394     }
 395
 396     @Override
 397     public List<Device> getLinkedDevices() throws IOException {
 398         var devices = dependencies.getAccountManager().getDevices();
 399         account.setMultiDevice(devices.size() > 1);
 400         var identityKey = account.getIdentityKeyPair().getPrivateKey();
 401         return devices.stream().map(d -> {
 402             String deviceName = d.getName();
 403             if (deviceName != null) {
 404                 try {
 405                     deviceName = DeviceNameUtil.decryptDeviceName(deviceName, identityKey);
 406                 } catch (IOException e) {
 407                     logger.debug("Failed to decrypt device name, maybe plain text?", e);
 408                 }
 409             }
 410             return new Device(d.getId(),
 411                     deviceName,
 412                     d.getCreated(),
 413                     d.getLastSeen(),
 414                     d.getId() == account.getDeviceId());
 415         }).collect(Collectors.toList());
 416     }
 417
 418     @Override
 419     public void removeLinkedDevices(long deviceId) throws IOException {
 420         dependencies.getAccountManager().removeDevice(deviceId);
 421         var devices = dependencies.getAccountManager().getDevices();
 422         account.setMultiDevice(devices.size() > 1);
 423     }
 424
 425     @Override
 426     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 427         var info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 428
 429         addDevice(info.deviceIdentifier, info.deviceKey);
 430     }
 431
 432     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 433         var identityKeyPair = account.getIdentityKeyPair();
 434         var verificationCode = dependencies.getAccountManager().getNewDeviceVerificationCode();
 435
 436         dependencies.getAccountManager()
 437                 .addDevice(deviceIdentifier,
 438                         deviceKey,
 439                         identityKeyPair,
 440                         Optional.of(account.getProfileKey().serialize()),
 441                         verificationCode);
 442         account.setMultiDevice(true);
 443     }
 444
 445     @Override
 446     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 447         if (!account.isMasterDevice()) {
 448             throw new RuntimeException("Only master device can set a PIN");
 449         }
 450         if (pin.isPresent()) {
 451             final var masterKey = account.getPinMasterKey() != null
 452                     ? account.getPinMasterKey()
 453                     : KeyUtils.createMasterKey();
 454
 455             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 456
 457             account.setRegistrationLockPin(pin.get(), masterKey);
 458         } else {
 459             // Remove KBS Pin
 460             pinHelper.removeRegistrationLockPin();
 461
 462             account.setRegistrationLockPin(null, null);
 463         }
 464     }
 465
 466     void refreshPreKeys() throws IOException {
 467         preKeyHelper.refreshPreKeys();
 468     }
 469
 470     @Override
 471     public Profile getRecipientProfile(RecipientIdentifier.Single recipient) throws UnregisteredUserException {
 472         return profileHelper.getRecipientProfile(resolveRecipient(recipient));
 473     }
 474
 475     private Profile getRecipientProfile(RecipientId recipientId) {
 476         return profileHelper.getRecipientProfile(recipientId);
 477     }
 478
 479     @Override
 480     public List<Group> getGroups() {
 481         return account.getGroupStore().getGroups().stream().map(this::toGroup).collect(Collectors.toList());
 482     }
 483
 484     private Group toGroup(final GroupInfo groupInfo) {
 485         if (groupInfo == null) {
 486             return null;
 487         }
 488
 489         return new Group(groupInfo.getGroupId(),
 490                 groupInfo.getTitle(),
 491                 groupInfo.getDescription(),
 492                 groupInfo.getGroupInviteLink(),
 493                 groupInfo.getMembers()
 494                         .stream()
 495                         .map(account.getRecipientStore()::resolveRecipientAddress)
 496                         .collect(Collectors.toSet()),
 497                 groupInfo.getPendingMembers()
 498                         .stream()
 499                         .map(account.getRecipientStore()::resolveRecipientAddress)
 500                         .collect(Collectors.toSet()),
 501                 groupInfo.getRequestingMembers()
 502                         .stream()
 503                         .map(account.getRecipientStore()::resolveRecipientAddress)
 504                         .collect(Collectors.toSet()),
 505                 groupInfo.getAdminMembers()
 506                         .stream()
 507                         .map(account.getRecipientStore()::resolveRecipientAddress)
 508                         .collect(Collectors.toSet()),
 509                 groupInfo.isBlocked(),
 510                 groupInfo.getMessageExpirationTimer(),
 511                 groupInfo.getPermissionAddMember(),
 512                 groupInfo.getPermissionEditDetails(),
 513                 groupInfo.getPermissionSendMessage(),
 514                 groupInfo.isMember(account.getSelfRecipientId()),
 515                 groupInfo.isAdmin(account.getSelfRecipientId()));
 516     }
 517
 518     @Override
 519     public SendGroupMessageResults quitGroup(
 520             GroupId groupId, Set<RecipientIdentifier.Single> groupAdmins
 521     ) throws GroupNotFoundException, IOException, NotAGroupMemberException, LastGroupAdminException {
 522         final var newAdmins = resolveRecipients(groupAdmins);
 523         return groupHelper.quitGroup(groupId, newAdmins);
 524     }
 525
 526     @Override
 527     public void deleteGroup(GroupId groupId) throws IOException {
 528         groupHelper.deleteGroup(groupId);
 529     }
 530
 531     @Override
 532     public Pair<GroupId, SendGroupMessageResults> createGroup(
 533             String name, Set<RecipientIdentifier.Single> members, File avatarFile
 534     ) throws IOException, AttachmentInvalidException {
 535         return groupHelper.createGroup(name, members == null ? null : resolveRecipients(members), avatarFile);
 536     }
 537
 538     @Override
 539     public SendGroupMessageResults updateGroup(
 540             final GroupId groupId, final UpdateGroup updateGroup
 541     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException, GroupSendingNotAllowedException {
 542         return groupHelper.updateGroup(groupId,
 543                 updateGroup.getName(),
 544                 updateGroup.getDescription(),
 545                 updateGroup.getMembers() == null ? null : resolveRecipients(updateGroup.getMembers()),
 546                 updateGroup.getRemoveMembers() == null ? null : resolveRecipients(updateGroup.getRemoveMembers()),
 547                 updateGroup.getAdmins() == null ? null : resolveRecipients(updateGroup.getAdmins()),
 548                 updateGroup.getRemoveAdmins() == null ? null : resolveRecipients(updateGroup.getRemoveAdmins()),
 549                 updateGroup.isResetGroupLink(),
 550                 updateGroup.getGroupLinkState(),
 551                 updateGroup.getAddMemberPermission(),
 552                 updateGroup.getEditDetailsPermission(),
 553                 updateGroup.getAvatarFile(),
 554                 updateGroup.getExpirationTimer(),
 555                 updateGroup.getIsAnnouncementGroup());
 556     }
 557
 558     @Override
 559     public Pair<GroupId, SendGroupMessageResults> joinGroup(
 560             GroupInviteLinkUrl inviteLinkUrl
 561     ) throws IOException, GroupLinkNotActiveException {
 562         return groupHelper.joinGroup(inviteLinkUrl);
 563     }
 564
 565     private SendMessageResults sendMessage(
 566             SignalServiceDataMessage.Builder messageBuilder, Set<RecipientIdentifier> recipients
 567     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 568         var results = new HashMap<RecipientIdentifier, List<SendMessageResult>>();
 569         long timestamp = System.currentTimeMillis();
 570         messageBuilder.withTimestamp(timestamp);
 571         for (final var recipient : recipients) {
 572             if (recipient instanceof RecipientIdentifier.Single single) {
 573                 final var recipientId = resolveRecipient(single);
 574                 final var result = sendHelper.sendMessage(messageBuilder, recipientId);
 575                 results.put(recipient, List.of(result));
 576             } else if (recipient instanceof RecipientIdentifier.NoteToSelf) {
 577                 final var result = sendHelper.sendSelfMessage(messageBuilder);
 578                 results.put(recipient, List.of(result));
 579             } else if (recipient instanceof RecipientIdentifier.Group group) {
 580                 final var result = sendHelper.sendAsGroupMessage(messageBuilder, group.groupId);
 581                 results.put(recipient, result);
 582             }
 583         }
 584         return new SendMessageResults(timestamp, results);
 585     }
 586
 587     private void sendTypingMessage(
 588             SignalServiceTypingMessage.Action action, Set<RecipientIdentifier> recipients
 589     ) throws IOException, UntrustedIdentityException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 590         final var timestamp = System.currentTimeMillis();
 591         for (var recipient : recipients) {
 592             if (recipient instanceof RecipientIdentifier.Single) {
 593                 final var message = new SignalServiceTypingMessage(action, timestamp, Optional.absent());
 594                 final var recipientId = resolveRecipient((RecipientIdentifier.Single) recipient);
 595                 sendHelper.sendTypingMessage(message, recipientId);
 596             } else if (recipient instanceof RecipientIdentifier.Group) {
 597                 final var groupId = ((RecipientIdentifier.Group) recipient).groupId;
 598                 final var message = new SignalServiceTypingMessage(action, timestamp, Optional.of(groupId.serialize()));
 599                 sendHelper.sendGroupTypingMessage(message, groupId);
 600             }
 601         }
 602     }
 603
 604     @Override
 605     public void sendTypingMessage(
 606             TypingAction action, Set<RecipientIdentifier> recipients
 607     ) throws IOException, UntrustedIdentityException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 608         sendTypingMessage(action.toSignalService(), recipients);
 609     }
 610
 611     @Override
 612     public void sendReadReceipt(
 613             RecipientIdentifier.Single sender, List<Long> messageIds
 614     ) throws IOException, UntrustedIdentityException {
 615         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.READ,
 616                 messageIds,
 617                 System.currentTimeMillis());
 618
 619         sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(sender));
 620     }
 621
 622     @Override
 623     public void sendViewedReceipt(
 624             RecipientIdentifier.Single sender, List<Long> messageIds
 625     ) throws IOException, UntrustedIdentityException {
 626         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.VIEWED,
 627                 messageIds,
 628                 System.currentTimeMillis());
 629
 630         sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(sender));
 631     }
 632
 633     @Override
 634     public SendMessageResults sendMessage(
 635             Message message, Set<RecipientIdentifier> recipients
 636     ) throws IOException, AttachmentInvalidException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 637         final var messageBuilder = SignalServiceDataMessage.newBuilder();
 638         applyMessage(messageBuilder, message);
 639         return sendMessage(messageBuilder, recipients);
 640     }
 641
 642     private void applyMessage(
 643             final SignalServiceDataMessage.Builder messageBuilder, final Message message
 644     ) throws AttachmentInvalidException, IOException {
 645         messageBuilder.withBody(message.getMessageText());
 646         final var attachments = message.getAttachments();
 647         if (attachments != null) {
 648             messageBuilder.withAttachments(attachmentHelper.uploadAttachments(attachments));
 649         }
 650     }
 651
 652     @Override
 653     public SendMessageResults sendRemoteDeleteMessage(
 654             long targetSentTimestamp, Set<RecipientIdentifier> recipients
 655     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 656         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
 657         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
 658         return sendMessage(messageBuilder, recipients);
 659     }
 660
 661     @Override
 662     public SendMessageResults sendMessageReaction(
 663             String emoji,
 664             boolean remove,
 665             RecipientIdentifier.Single targetAuthor,
 666             long targetSentTimestamp,
 667             Set<RecipientIdentifier> recipients
 668     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 669         var targetAuthorRecipientId = resolveRecipient(targetAuthor);
 670         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 671                 remove,
 672                 resolveSignalServiceAddress(targetAuthorRecipientId),
 673                 targetSentTimestamp);
 674         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
 675         return sendMessage(messageBuilder, recipients);
 676     }
 677
 678     @Override
 679     public SendMessageResults sendEndSessionMessage(Set<RecipientIdentifier.Single> recipients) throws IOException {
 680         var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
 681
 682         try {
 683             return sendMessage(messageBuilder,
 684                     recipients.stream().map(RecipientIdentifier.class::cast).collect(Collectors.toSet()));
 685         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 686             throw new AssertionError(e);
 687         } finally {
 688             for (var recipient : recipients) {
 689                 final var recipientId = resolveRecipient(recipient);
 690                 account.getSessionStore().deleteAllSessions(recipientId);
 691             }
 692         }
 693     }
 694
 695     @Override
 696     public void setContactName(
 697             RecipientIdentifier.Single recipient, String name
 698     ) throws NotMasterDeviceException, UnregisteredUserException {
 699         if (!account.isMasterDevice()) {
 700             throw new NotMasterDeviceException();
 701         }
 702         contactHelper.setContactName(resolveRecipient(recipient), name);
 703     }
 704
 705     @Override
 706     public void setContactBlocked(
 707             RecipientIdentifier.Single recipient, boolean blocked
 708     ) throws NotMasterDeviceException, IOException {
 709         if (!account.isMasterDevice()) {
 710             throw new NotMasterDeviceException();
 711         }
 712         contactHelper.setContactBlocked(resolveRecipient(recipient), blocked);
 713         // TODO cycle our profile key
 714         syncHelper.sendBlockedList();
 715     }
 716
 717     @Override
 718     public void setGroupBlocked(
 719             final GroupId groupId, final boolean blocked
 720     ) throws GroupNotFoundException, IOException, NotMasterDeviceException {
 721         if (!account.isMasterDevice()) {
 722             throw new NotMasterDeviceException();
 723         }
 724         groupHelper.setGroupBlocked(groupId, blocked);
 725         // TODO cycle our profile key
 726         syncHelper.sendBlockedList();
 727     }
 728
 729     /**
 730      * Change the expiration timer for a contact
 731      */
 732     @Override
 733     public void setExpirationTimer(
 734             RecipientIdentifier.Single recipient, int messageExpirationTimer
 735     ) throws IOException {
 736         var recipientId = resolveRecipient(recipient);
 737         contactHelper.setExpirationTimer(recipientId, messageExpirationTimer);
 738         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
 739         try {
 740             sendMessage(messageBuilder, Set.of(recipient));
 741         } catch (NotAGroupMemberException | GroupNotFoundException | GroupSendingNotAllowedException e) {
 742             throw new AssertionError(e);
 743         }
 744     }
 745
 746     /**
 747      * Upload the sticker pack from path.
 748      *
 749      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 750      * @return if successful, returns the URL to install the sticker pack in the signal app
 751      */
 752     @Override
 753     public URI uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
 754         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
 755
 756         var messageSender = dependencies.getMessageSender();
 757
 758         var packKey = KeyUtils.createStickerUploadKey();
 759         var packIdString = messageSender.uploadStickerManifest(manifest, packKey);
 760         var packId = StickerPackId.deserialize(Hex.fromStringCondensed(packIdString));
 761
 762         var sticker = new Sticker(packId, packKey);
 763         account.getStickerStore().updateSticker(sticker);
 764
 765         try {
 766             return new URI("https",
 767                     "signal.art",
 768                     "/addstickers/",
 769                     "pack_id="
 770                             + URLEncoder.encode(Hex.toStringCondensed(packId.serialize()), StandardCharsets.UTF_8)
 771                             + "&pack_key="
 772                             + URLEncoder.encode(Hex.toStringCondensed(packKey), StandardCharsets.UTF_8));
 773         } catch (URISyntaxException e) {
 774             throw new AssertionError(e);
 775         }
 776     }
 777
 778     @Override
 779     public void requestAllSyncData() throws IOException {
 780         syncHelper.requestAllSyncData();
 781         retrieveRemoteStorage();
 782     }
 783
 784     void retrieveRemoteStorage() throws IOException {
 785         if (account.getStorageKey() != null) {
 786             storageHelper.readDataFromStorage();
 787         }
 788     }
 789
 790     private RecipientId refreshRegisteredUser(RecipientId recipientId) throws IOException {
 791         final var address = resolveSignalServiceAddress(recipientId);
 792         if (!address.getNumber().isPresent()) {
 793             return recipientId;
 794         }
 795         final var number = address.getNumber().get();
 796         final var uuid = getRegisteredUser(number);
 797         return resolveRecipientTrusted(new SignalServiceAddress(uuid, number));
 798     }
 799
 800     private UUID getRegisteredUser(final String number) throws IOException {
 801         final Map<String, UUID> uuidMap;
 802         try {
 803             uuidMap = getRegisteredUsers(Set.of(number));
 804         } catch (NumberFormatException e) {
 805             throw new UnregisteredUserException(number, e);
 806         }
 807         final var uuid = uuidMap.get(number);
 808         if (uuid == null) {
 809             throw new UnregisteredUserException(number, null);
 810         }
 811         return uuid;
 812     }
 813
 814     private Map<String, UUID> getRegisteredUsers(final Set<String> numbers) throws IOException {
 815         final Map<String, UUID> registeredUsers;
 816         try {
 817             registeredUsers = dependencies.getAccountManager()
 818                     .getRegisteredUsers(ServiceConfig.getIasKeyStore(),
 819                             numbers,
 820                             serviceEnvironmentConfig.getCdsMrenclave());
 821         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
 822             throw new IOException(e);
 823         }
 824
 825         // Store numbers as recipients so we have the number/uuid association
 826         registeredUsers.forEach((number, uuid) -> resolveRecipientTrusted(new SignalServiceAddress(uuid, number)));
 827
 828         return registeredUsers;
 829     }
 830
 831     private void retryFailedReceivedMessages(ReceiveMessageHandler handler) {
 832         Set<HandleAction> queuedActions = new HashSet<>();
 833         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
 834             var actions = retryFailedReceivedMessage(handler, cachedMessage);
 835             if (actions != null) {
 836                 queuedActions.addAll(actions);
 837             }
 838         }
 839         handleQueuedActions(queuedActions);
 840     }
 841
 842     private List<HandleAction> retryFailedReceivedMessage(
 843             final ReceiveMessageHandler handler, final CachedMessage cachedMessage
 844     ) {
 845         var envelope = cachedMessage.loadEnvelope();
 846         if (envelope == null) {
 847             cachedMessage.delete();
 848             return null;
 849         }
 850
 851         final var result = incomingMessageHandler.handleRetryEnvelope(envelope, ignoreAttachments, handler);
 852         final var actions = result.first();
 853         final var exception = result.second();
 854
 855         if (exception instanceof UntrustedIdentityException) {
 856             if (System.currentTimeMillis() - envelope.getServerDeliveredTimestamp() > 1000L * 60 * 60 * 24 * 30) {
 857                 // Envelope is more than a month old, cleaning up.
 858                 cachedMessage.delete();
 859                 return null;
 860             }
 861             if (!envelope.hasSourceUuid()) {
 862                 final var identifier = ((UntrustedIdentityException) exception).getSender();
 863                 final var recipientId = account.getRecipientStore().resolveRecipient(identifier);
 864                 try {
 865                     account.getMessageCache().replaceSender(cachedMessage, recipientId);
 866                 } catch (IOException ioException) {
 867                     logger.warn("Failed to move cached message to recipient folder: {}", ioException.getMessage());
 868                 }
 869             }
 870             return null;
 871         }
 872
 873         // If successful and for all other errors that are not recoverable, delete the cached message
 874         cachedMessage.delete();
 875         return actions;
 876     }
 877
 878     @Override
 879     public void addReceiveHandler(final ReceiveMessageHandler handler) {
 880         if (isReceivingSynchronous) {
 881             throw new IllegalStateException("Already receiving message synchronously.");
 882         }
 883         synchronized (messageHandlers) {
 884             messageHandlers.add(handler);
 885
 886             startReceiveThreadIfRequired();
 887         }
 888     }
 889
 890     private void startReceiveThreadIfRequired() {
 891         if (receiveThread != null) {
 892             return;
 893         }
 894         receiveThread = new Thread(() -> {
 895             while (!Thread.interrupted()) {
 896                 try {
 897                     receiveMessagesInternal(1L, TimeUnit.HOURS, false, (envelope, decryptedContent, e) -> {
 898                         synchronized (messageHandlers) {
 899                             for (ReceiveMessageHandler h : messageHandlers) {
 900                                 try {
 901                                     h.handleMessage(envelope, decryptedContent, e);
 902                                 } catch (Exception ex) {
 903                                     logger.warn("Message handler failed, ignoring", ex);
 904                                 }
 905                             }
 906                         }
 907                     });
 908                     break;
 909                 } catch (IOException e) {
 910                     logger.warn("Receiving messages failed, retrying", e);
 911                 }
 912             }
 913             hasCaughtUpWithOldMessages = false;
 914             synchronized (messageHandlers) {
 915                 receiveThread = null;
 916
 917                 // Check if in the meantime another handler has been registered
 918                 if (!messageHandlers.isEmpty()) {
 919                     startReceiveThreadIfRequired();
 920                 }
 921             }
 922         });
 923
 924         receiveThread.start();
 925     }
 926
 927     @Override
 928     public void removeReceiveHandler(final ReceiveMessageHandler handler) {
 929         final Thread thread;
 930         synchronized (messageHandlers) {
 931             thread = receiveThread;
 932             receiveThread = null;
 933             messageHandlers.remove(handler);
 934             if (!messageHandlers.isEmpty() || isReceivingSynchronous) {
 935                 return;
 936             }
 937         }
 938
 939         stopReceiveThread(thread);
 940     }
 941
 942     private void stopReceiveThread(final Thread thread) {
 943         thread.interrupt();
 944         try {
 945             thread.join();
 946         } catch (InterruptedException ignored) {
 947         }
 948     }
 949
 950     @Override
 951     public boolean isReceiving() {
 952         if (isReceivingSynchronous) {
 953             return true;
 954         }
 955         synchronized (messageHandlers) {
 956             return messageHandlers.size() > 0;
 957         }
 958     }
 959
 960     @Override
 961     public void receiveMessages(long timeout, TimeUnit unit, ReceiveMessageHandler handler) throws IOException {
 962         receiveMessages(timeout, unit, true, handler);
 963     }
 964
 965     @Override
 966     public void receiveMessages(ReceiveMessageHandler handler) throws IOException {
 967         receiveMessages(1L, TimeUnit.HOURS, false, handler);
 968     }
 969
 970     private void receiveMessages(
 971             long timeout, TimeUnit unit, boolean returnOnTimeout, ReceiveMessageHandler handler
 972     ) throws IOException {
 973         if (isReceiving()) {
 974             throw new IllegalStateException("Already receiving message.");
 975         }
 976         isReceivingSynchronous = true;
 977         receiveThread = Thread.currentThread();
 978         try {
 979             receiveMessagesInternal(timeout, unit, returnOnTimeout, handler);
 980         } finally {
 981             receiveThread = null;
 982             hasCaughtUpWithOldMessages = false;
 983             isReceivingSynchronous = false;
 984         }
 985     }
 986
 987     private void receiveMessagesInternal(
 988             long timeout, TimeUnit unit, boolean returnOnTimeout, ReceiveMessageHandler handler
 989     ) throws IOException {
 990         retryFailedReceivedMessages(handler);
 991
 992         Set<HandleAction> queuedActions = new HashSet<>();
 993
 994         final var signalWebSocket = dependencies.getSignalWebSocket();
 995         signalWebSocket.connect();
 996
 997         hasCaughtUpWithOldMessages = false;
 998         var backOffCounter = 0;
 999         final var MAX_BACKOFF_COUNTER = 9;
1000
1001         while (!Thread.interrupted()) {
1002             SignalServiceEnvelope envelope;
1003             final CachedMessage[] cachedMessage = {null};
1004             account.setLastReceiveTimestamp(System.currentTimeMillis());
1005             logger.debug("Checking for new message from server");
1006             try {
1007                 var result = signalWebSocket.readOrEmpty(unit.toMillis(timeout), envelope1 -> {
1008                     final var recipientId = envelope1.hasSourceUuid()
1009                             ? resolveRecipient(envelope1.getSourceAddress())
1010                             : null;
1011                     // store message on disk, before acknowledging receipt to the server
1012                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1, recipientId);
1013                 });
1014                 backOffCounter = 0;
1015
1016                 if (result.isPresent()) {
1017                     envelope = result.get();
1018                     logger.debug("New message received from server");
1019                 } else {
1020                     logger.debug("Received indicator that server queue is empty");
1021                     handleQueuedActions(queuedActions);
1022                     queuedActions.clear();
1023
1024                     hasCaughtUpWithOldMessages = true;
1025                     synchronized (this) {
1026                         this.notifyAll();
1027                     }
1028
1029                     // Continue to wait another timeout for new messages
1030                     continue;
1031                 }
1032             } catch (AssertionError e) {
1033                 if (e.getCause() instanceof InterruptedException) {
1034                     Thread.currentThread().interrupt();
1035                     break;
1036                 } else {
1037                     throw e;
1038                 }
1039             } catch (IOException e) {
1040                 logger.debug("Pipe unexpectedly unavailable: {}", e.getMessage());
1041                 if (e instanceof WebSocketUnavailableException || "Connection closed!".equals(e.getMessage())) {
1042                     final var sleepMilliseconds = 100 * (long) Math.pow(2, backOffCounter);
1043                     backOffCounter = Math.min(backOffCounter + 1, MAX_BACKOFF_COUNTER);
1044                     logger.warn("Connection closed unexpectedly, reconnecting in {} ms", sleepMilliseconds);
1045                     try {
1046                         Thread.sleep(sleepMilliseconds);
1047                     } catch (InterruptedException interruptedException) {
1048                         return;
1049                     }
1050                     hasCaughtUpWithOldMessages = false;
1051                     signalWebSocket.connect();
1052                     continue;
1053                 }
1054                 throw e;
1055             } catch (TimeoutException e) {
1056                 backOffCounter = 0;
1057                 if (returnOnTimeout) return;
1058                 continue;
1059             }
1060
1061             final var result = incomingMessageHandler.handleEnvelope(envelope, ignoreAttachments, handler);
1062             queuedActions.addAll(result.first());
1063             final var exception = result.second();
1064
1065             if (hasCaughtUpWithOldMessages) {
1066                 handleQueuedActions(queuedActions);
1067                 queuedActions.clear();
1068             }
1069             if (cachedMessage[0] != null) {
1070                 if (exception instanceof UntrustedIdentityException) {
1071                     logger.debug("Keeping message with untrusted identity in message cache");
1072                     final var address = ((UntrustedIdentityException) exception).getSender();
1073                     final var recipientId = resolveRecipient(address);
1074                     if (!envelope.hasSourceUuid()) {
1075                         try {
1076                             cachedMessage[0] = account.getMessageCache().replaceSender(cachedMessage[0], recipientId);
1077                         } catch (IOException ioException) {
1078                             logger.warn("Failed to move cached message to recipient folder: {}",
1079                                     ioException.getMessage());
1080                         }
1081                     }
1082                 } else {
1083                     cachedMessage[0].delete();
1084                 }
1085             }
1086         }
1087         handleQueuedActions(queuedActions);
1088         queuedActions.clear();
1089     }
1090
1091     @Override
1092     public void setIgnoreAttachments(final boolean ignoreAttachments) {
1093         this.ignoreAttachments = ignoreAttachments;
1094     }
1095
1096     @Override
1097     public boolean hasCaughtUpWithOldMessages() {
1098         return hasCaughtUpWithOldMessages;
1099     }
1100
1101     private void handleQueuedActions(final Collection<HandleAction> queuedActions) {
1102         logger.debug("Handling message actions");
1103         var interrupted = false;
1104         for (var action : queuedActions) {
1105             try {
1106                 action.execute(context);
1107             } catch (Throwable e) {
1108                 if ((e instanceof AssertionError || e instanceof RuntimeException)
1109                         && e.getCause() instanceof InterruptedException) {
1110                     interrupted = true;
1111                     continue;
1112                 }
1113                 logger.warn("Message action failed.", e);
1114             }
1115         }
1116         if (interrupted) {
1117             Thread.currentThread().interrupt();
1118         }
1119     }
1120
1121     @Override
1122     public boolean isContactBlocked(final RecipientIdentifier.Single recipient) {
1123         final RecipientId recipientId;
1124         try {
1125             recipientId = resolveRecipient(recipient);
1126         } catch (UnregisteredUserException e) {
1127             return false;
1128         }
1129         return contactHelper.isContactBlocked(recipientId);
1130     }
1131
1132     @Override
1133     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1134         return attachmentHelper.getAttachmentFile(attachmentId);
1135     }
1136
1137     @Override
1138     public void sendContacts() throws IOException {
1139         syncHelper.sendContacts();
1140     }
1141
1142     @Override
1143     public List<Pair<RecipientAddress, Contact>> getContacts() {
1144         return account.getContactStore()
1145                 .getContacts()
1146                 .stream()
1147                 .map(p -> new Pair<>(account.getRecipientStore().resolveRecipientAddress(p.first()), p.second()))
1148                 .collect(Collectors.toList());
1149     }
1150
1151     @Override
1152     public String getContactOrProfileName(RecipientIdentifier.Single recipient) {
1153         final RecipientId recipientId;
1154         try {
1155             recipientId = resolveRecipient(recipient);
1156         } catch (UnregisteredUserException e) {
1157             return null;
1158         }
1159
1160         final var contact = account.getContactStore().getContact(recipientId);
1161         if (contact != null && !Util.isEmpty(contact.getName())) {
1162             return contact.getName();
1163         }
1164
1165         final var profile = getRecipientProfile(recipientId);
1166         if (profile != null) {
1167             return profile.getDisplayName();
1168         }
1169
1170         return null;
1171     }
1172
1173     @Override
1174     public Group getGroup(GroupId groupId) {
1175         return toGroup(groupHelper.getGroup(groupId));
1176     }
1177
1178     private GroupInfo getGroupInfo(GroupId groupId) {
1179         return groupHelper.getGroup(groupId);
1180     }
1181
1182     @Override
1183     public List<Identity> getIdentities() {
1184         return account.getIdentityKeyStore()
1185                 .getIdentities()
1186                 .stream()
1187                 .map(this::toIdentity)
1188                 .collect(Collectors.toList());
1189     }
1190
1191     private Identity toIdentity(final IdentityInfo identityInfo) {
1192         if (identityInfo == null) {
1193             return null;
1194         }
1195
1196         final var address = account.getRecipientStore().resolveRecipientAddress(identityInfo.getRecipientId());
1197         final var scannableFingerprint = identityHelper.computeSafetyNumberForScanning(identityInfo.getRecipientId(),
1198                 identityInfo.getIdentityKey());
1199         return new Identity(address,
1200                 identityInfo.getIdentityKey(),
1201                 identityHelper.computeSafetyNumber(identityInfo.getRecipientId(), identityInfo.getIdentityKey()),
1202                 scannableFingerprint == null ? null : scannableFingerprint.getSerialized(),
1203                 identityInfo.getTrustLevel(),
1204                 identityInfo.getDateAdded());
1205     }
1206
1207     @Override
1208     public List<Identity> getIdentities(RecipientIdentifier.Single recipient) {
1209         IdentityInfo identity;
1210         try {
1211             identity = account.getIdentityKeyStore().getIdentity(resolveRecipient(recipient));
1212         } catch (UnregisteredUserException e) {
1213             identity = null;
1214         }
1215         return identity == null ? List.of() : List.of(toIdentity(identity));
1216     }
1217
1218     /**
1219      * Trust this the identity with this fingerprint
1220      *
1221      * @param recipient   username of the identity
1222      * @param fingerprint Fingerprint
1223      */
1224     @Override
1225     public boolean trustIdentityVerified(RecipientIdentifier.Single recipient, byte[] fingerprint) {
1226         RecipientId recipientId;
1227         try {
1228             recipientId = resolveRecipient(recipient);
1229         } catch (UnregisteredUserException e) {
1230             return false;
1231         }
1232         return identityHelper.trustIdentityVerified(recipientId, fingerprint);
1233     }
1234
1235     /**
1236      * Trust this the identity with this safety number
1237      *
1238      * @param recipient    username of the identity
1239      * @param safetyNumber Safety number
1240      */
1241     @Override
1242     public boolean trustIdentityVerifiedSafetyNumber(RecipientIdentifier.Single recipient, String safetyNumber) {
1243         RecipientId recipientId;
1244         try {
1245             recipientId = resolveRecipient(recipient);
1246         } catch (UnregisteredUserException e) {
1247             return false;
1248         }
1249         return identityHelper.trustIdentityVerifiedSafetyNumber(recipientId, safetyNumber);
1250     }
1251
1252     /**
1253      * Trust this the identity with this scannable safety number
1254      *
1255      * @param recipient    username of the identity
1256      * @param safetyNumber Scannable safety number
1257      */
1258     @Override
1259     public boolean trustIdentityVerifiedSafetyNumber(RecipientIdentifier.Single recipient, byte[] safetyNumber) {
1260         RecipientId recipientId;
1261         try {
1262             recipientId = resolveRecipient(recipient);
1263         } catch (UnregisteredUserException e) {
1264             return false;
1265         }
1266         return identityHelper.trustIdentityVerifiedSafetyNumber(recipientId, safetyNumber);
1267     }
1268
1269     /**
1270      * Trust all keys of this identity without verification
1271      *
1272      * @param recipient username of the identity
1273      */
1274     @Override
1275     public boolean trustIdentityAllKeys(RecipientIdentifier.Single recipient) {
1276         RecipientId recipientId;
1277         try {
1278             recipientId = resolveRecipient(recipient);
1279         } catch (UnregisteredUserException e) {
1280             return false;
1281         }
1282         return identityHelper.trustIdentityAllKeys(recipientId);
1283     }
1284
1285     private void handleIdentityFailure(
1286             final RecipientId recipientId, final SendMessageResult.IdentityFailure identityFailure
1287     ) {
1288         this.identityHelper.handleIdentityFailure(recipientId, identityFailure);
1289     }
1290
1291     @Override
1292     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
1293         return resolveSignalServiceAddress(resolveRecipient(address));
1294     }
1295
1296     private SignalServiceAddress resolveSignalServiceAddress(RecipientId recipientId) {
1297         final var address = account.getRecipientStore().resolveRecipientAddress(recipientId);
1298         if (address.getUuid().isPresent()) {
1299             return address.toSignalServiceAddress();
1300         }
1301
1302         // Address in recipient store doesn't have a uuid, this shouldn't happen
1303         // Try to retrieve the uuid from the server
1304         final var number = address.getNumber().get();
1305         final UUID uuid;
1306         try {
1307             uuid = getRegisteredUser(number);
1308         } catch (IOException e) {
1309             logger.warn("Failed to get uuid for e164 number: {}", number, e);
1310             // Return SignalServiceAddress with unknown UUID
1311             return address.toSignalServiceAddress();
1312         }
1313         return resolveSignalServiceAddress(account.getRecipientStore().resolveRecipient(uuid));
1314     }
1315
1316     private Set<RecipientId> resolveRecipients(Collection<RecipientIdentifier.Single> recipients) throws UnregisteredUserException {
1317         final var recipientIds = new HashSet<RecipientId>(recipients.size());
1318         for (var number : recipients) {
1319             final var recipientId = resolveRecipient(number);
1320             recipientIds.add(recipientId);
1321         }
1322         return recipientIds;
1323     }
1324
1325     private RecipientId resolveRecipient(final RecipientIdentifier.Single recipient) throws UnregisteredUserException {
1326         if (recipient instanceof RecipientIdentifier.Uuid) {
1327             return account.getRecipientStore().resolveRecipient(((RecipientIdentifier.Uuid) recipient).uuid);
1328         } else {
1329             final var number = ((RecipientIdentifier.Number) recipient).number;
1330             return account.getRecipientStore().resolveRecipient(number, () -> {
1331                 try {
1332                     return getRegisteredUser(number);
1333                 } catch (IOException e) {
1334                     return null;
1335                 }
1336             });
1337         }
1338     }
1339
1340     private RecipientId resolveRecipient(SignalServiceAddress address) {
1341         return account.getRecipientStore().resolveRecipient(address);
1342     }
1343
1344     private RecipientId resolveRecipientTrusted(SignalServiceAddress address) {
1345         return account.getRecipientStore().resolveRecipientTrusted(address);
1346     }
1347
1348     @Override
1349     public void close() throws IOException {
1350         close(true);
1351     }
1352
1353     private void close(boolean closeAccount) throws IOException {
1354         Thread thread;
1355         synchronized (messageHandlers) {
1356             messageHandlers.clear();
1357             thread = receiveThread;
1358             receiveThread = null;
1359         }
1360         if (thread != null) {
1361             stopReceiveThread(thread);
1362         }
1363         executor.shutdown();
1364
1365         dependencies.getSignalWebSocket().disconnect();
1366
1367         if (closeAccount && account != null) {
1368             account.close();
1369         }
1370         account = null;
1371     }
1372 }