nmode's Git Repositories - signal-cli/blob - lib/src/main/java/org/asamk/signal/manager/Manager.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.Message;
  22 import org.asamk.signal.manager.api.RecipientIdentifier;
  23 import org.asamk.signal.manager.api.SendGroupMessageResults;
  24 import org.asamk.signal.manager.api.SendMessageResults;
  25 import org.asamk.signal.manager.api.TypingAction;
  26 import org.asamk.signal.manager.config.ServiceConfig;
  27 import org.asamk.signal.manager.config.ServiceEnvironment;
  28 import org.asamk.signal.manager.config.ServiceEnvironmentConfig;
  29 import org.asamk.signal.manager.groups.GroupId;
  30 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  31 import org.asamk.signal.manager.groups.GroupLinkState;
  32 import org.asamk.signal.manager.groups.GroupNotFoundException;
  33 import org.asamk.signal.manager.groups.GroupPermission;
  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.IncomingMessageHandler;
  42 import org.asamk.signal.manager.helper.PinHelper;
  43 import org.asamk.signal.manager.helper.PreKeyHelper;
  44 import org.asamk.signal.manager.helper.ProfileHelper;
  45 import org.asamk.signal.manager.helper.SendHelper;
  46 import org.asamk.signal.manager.helper.StorageHelper;
  47 import org.asamk.signal.manager.helper.SyncHelper;
  48 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  49 import org.asamk.signal.manager.jobs.Context;
  50 import org.asamk.signal.manager.storage.SignalAccount;
  51 import org.asamk.signal.manager.storage.groups.GroupInfo;
  52 import org.asamk.signal.manager.storage.identities.IdentityInfo;
  53 import org.asamk.signal.manager.storage.identities.TrustNewIdentity;
  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.RecipientId;
  58 import org.asamk.signal.manager.storage.stickers.Sticker;
  59 import org.asamk.signal.manager.storage.stickers.StickerPackId;
  60 import org.asamk.signal.manager.util.KeyUtils;
  61 import org.asamk.signal.manager.util.StickerUtils;
  62 import org.asamk.signal.manager.util.Utils;
  63 import org.slf4j.Logger;
  64 import org.slf4j.LoggerFactory;
  65 import org.whispersystems.libsignal.IdentityKey;
  66 import org.whispersystems.libsignal.InvalidKeyException;
  67 import org.whispersystems.libsignal.ecc.ECPublicKey;
  68 import org.whispersystems.libsignal.fingerprint.Fingerprint;
  69 import org.whispersystems.libsignal.fingerprint.FingerprintParsingException;
  70 import org.whispersystems.libsignal.fingerprint.FingerprintVersionMismatchException;
  71 import org.whispersystems.libsignal.util.Pair;
  72 import org.whispersystems.libsignal.util.guava.Optional;
  73 import org.whispersystems.signalservice.api.SignalSessionLock;
  74 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  75 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  79 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  80 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  81 import org.whispersystems.signalservice.api.messages.SignalServiceTypingMessage;
  82 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  83 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  84 import org.whispersystems.signalservice.api.util.DeviceNameUtil;
  85 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  86 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
  87 import org.whispersystems.signalservice.api.websocket.WebSocketUnavailableException;
  88 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
  89 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
  90 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
  91 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
  92 import org.whispersystems.signalservice.internal.util.Hex;
  93 import org.whispersystems.signalservice.internal.util.Util;
  94
  95 import java.io.Closeable;
  96 import java.io.File;
  97 import java.io.IOException;
  98 import java.net.URI;
  99 import java.net.URISyntaxException;
 100 import java.net.URLEncoder;
 101 import java.nio.charset.StandardCharsets;
 102 import java.security.SignatureException;
 103 import java.util.Arrays;
 104 import java.util.Collection;
 105 import java.util.Date;
 106 import java.util.HashMap;
 107 import java.util.HashSet;
 108 import java.util.List;
 109 import java.util.Map;
 110 import java.util.Set;
 111 import java.util.UUID;
 112 import java.util.concurrent.ExecutorService;
 113 import java.util.concurrent.Executors;
 114 import java.util.concurrent.TimeUnit;
 115 import java.util.concurrent.TimeoutException;
 116 import java.util.concurrent.locks.ReentrantLock;
 117 import java.util.function.Function;
 118 import java.util.stream.Collectors;
 119
 120 import static org.asamk.signal.manager.config.ServiceConfig.capabilities;
 121
 122 public class Manager implements Closeable {
 123
 124     private final static Logger logger = LoggerFactory.getLogger(Manager.class);
 125
 126     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
 127     private final SignalDependencies dependencies;
 128
 129     private SignalAccount account;
 130
 131     private final ExecutorService executor = Executors.newCachedThreadPool();
 132
 133     private final ProfileHelper profileHelper;
 134     private final PinHelper pinHelper;
 135     private final StorageHelper storageHelper;
 136     private final SendHelper sendHelper;
 137     private final SyncHelper syncHelper;
 138     private final AttachmentHelper attachmentHelper;
 139     private final GroupHelper groupHelper;
 140     private final ContactHelper contactHelper;
 141     private final IncomingMessageHandler incomingMessageHandler;
 142     private final PreKeyHelper preKeyHelper;
 143
 144     private final Context context;
 145     private boolean hasCaughtUpWithOldMessages = false;
 146
 147     Manager(
 148             SignalAccount account,
 149             PathConfig pathConfig,
 150             ServiceEnvironmentConfig serviceEnvironmentConfig,
 151             String userAgent
 152     ) {
 153         this.account = account;
 154         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 155
 156         final var credentialsProvider = new DynamicCredentialsProvider(account.getUuid(),
 157                 account.getUsername(),
 158                 account.getPassword(),
 159                 account.getDeviceId());
 160         final var sessionLock = new SignalSessionLock() {
 161             private final ReentrantLock LEGACY_LOCK = new ReentrantLock();
 162
 163             @Override
 164             public Lock acquire() {
 165                 LEGACY_LOCK.lock();
 166                 return LEGACY_LOCK::unlock;
 167             }
 168         };
 169         this.dependencies = new SignalDependencies(serviceEnvironmentConfig,
 170                 userAgent,
 171                 credentialsProvider,
 172                 account.getSignalProtocolStore(),
 173                 executor,
 174                 sessionLock);
 175         final var avatarStore = new AvatarStore(pathConfig.getAvatarsPath());
 176         final var attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
 177         final var stickerPackStore = new StickerPackStore(pathConfig.getStickerPacksPath());
 178
 179         this.attachmentHelper = new AttachmentHelper(dependencies, attachmentStore);
 180         this.pinHelper = new PinHelper(dependencies.getKeyBackupService());
 181         final var unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 182                 account.getProfileStore()::getProfileKey,
 183                 this::getRecipientProfile,
 184                 this::getSenderCertificate);
 185         this.profileHelper = new ProfileHelper(account,
 186                 dependencies,
 187                 avatarStore,
 188                 account.getProfileStore()::getProfileKey,
 189                 unidentifiedAccessHelper::getAccessFor,
 190                 this::resolveSignalServiceAddress);
 191         final GroupV2Helper groupV2Helper = new GroupV2Helper(profileHelper::getRecipientProfileKeyCredential,
 192                 this::getRecipientProfile,
 193                 account::getSelfRecipientId,
 194                 dependencies.getGroupsV2Operations(),
 195                 dependencies.getGroupsV2Api(),
 196                 this::resolveSignalServiceAddress);
 197         this.sendHelper = new SendHelper(account,
 198                 dependencies,
 199                 unidentifiedAccessHelper,
 200                 this::resolveSignalServiceAddress,
 201                 account.getRecipientStore(),
 202                 this::handleIdentityFailure,
 203                 this::getGroup,
 204                 this::refreshRegisteredUser);
 205         this.groupHelper = new GroupHelper(account,
 206                 dependencies,
 207                 attachmentHelper,
 208                 sendHelper,
 209                 groupV2Helper,
 210                 avatarStore,
 211                 this::resolveSignalServiceAddress,
 212                 account.getRecipientStore());
 213         this.storageHelper = new StorageHelper(account, dependencies, groupHelper);
 214         this.contactHelper = new ContactHelper(account);
 215         this.syncHelper = new SyncHelper(account,
 216                 attachmentHelper,
 217                 sendHelper,
 218                 groupHelper,
 219                 avatarStore,
 220                 this::resolveSignalServiceAddress);
 221         preKeyHelper = new PreKeyHelper(account, dependencies);
 222
 223         this.context = new Context(account,
 224                 dependencies,
 225                 stickerPackStore,
 226                 sendHelper,
 227                 groupHelper,
 228                 syncHelper,
 229                 profileHelper,
 230                 storageHelper,
 231                 preKeyHelper);
 232         var jobExecutor = new JobExecutor(context);
 233
 234         this.incomingMessageHandler = new IncomingMessageHandler(account,
 235                 dependencies,
 236                 account.getRecipientStore(),
 237                 this::resolveSignalServiceAddress,
 238                 groupHelper,
 239                 contactHelper,
 240                 attachmentHelper,
 241                 syncHelper,
 242                 jobExecutor);
 243     }
 244
 245     public String getUsername() {
 246         return account.getUsername();
 247     }
 248
 249     public RecipientId getSelfRecipientId() {
 250         return account.getSelfRecipientId();
 251     }
 252
 253     public int getDeviceId() {
 254         return account.getDeviceId();
 255     }
 256
 257     public static Manager init(
 258             String username,
 259             File settingsPath,
 260             ServiceEnvironment serviceEnvironment,
 261             String userAgent,
 262             final TrustNewIdentity trustNewIdentity
 263     ) throws IOException, NotRegisteredException {
 264         var pathConfig = PathConfig.createDefault(settingsPath);
 265
 266         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 267             throw new NotRegisteredException();
 268         }
 269
 270         var account = SignalAccount.load(pathConfig.getDataPath(), username, true, trustNewIdentity);
 271
 272         if (!account.isRegistered()) {
 273             throw new NotRegisteredException();
 274         }
 275
 276         final var serviceEnvironmentConfig = ServiceConfig.getServiceEnvironmentConfig(serviceEnvironment, userAgent);
 277
 278         return new Manager(account, pathConfig, serviceEnvironmentConfig, userAgent);
 279     }
 280
 281     public static List<String> getAllLocalUsernames(File settingsPath) {
 282         var pathConfig = PathConfig.createDefault(settingsPath);
 283         final var dataPath = pathConfig.getDataPath();
 284         final var files = dataPath.listFiles();
 285
 286         if (files == null) {
 287             return List.of();
 288         }
 289
 290         return Arrays.stream(files)
 291                 .filter(File::isFile)
 292                 .map(File::getName)
 293                 .filter(file -> PhoneNumberFormatter.isValidNumber(file, null))
 294                 .collect(Collectors.toList());
 295     }
 296
 297     public void checkAccountState() throws IOException {
 298         if (account.getLastReceiveTimestamp() == 0) {
 299             logger.info("The Signal protocol expects that incoming messages are regularly received.");
 300         } else {
 301             var diffInMilliseconds = System.currentTimeMillis() - account.getLastReceiveTimestamp();
 302             long days = TimeUnit.DAYS.convert(diffInMilliseconds, TimeUnit.MILLISECONDS);
 303             if (days > 7) {
 304                 logger.warn(
 305                         "Messages have been last received {} days ago. The Signal protocol expects that incoming messages are regularly received.",
 306                         days);
 307             }
 308         }
 309         preKeyHelper.refreshPreKeysIfNecessary();
 310         if (account.getUuid() == null) {
 311             account.setUuid(dependencies.getAccountManager().getOwnUuid());
 312         }
 313         updateAccountAttributes(null);
 314     }
 315
 316     /**
 317      * This is used for checking a set of phone numbers for registration on Signal
 318      *
 319      * @param numbers The set of phone number in question
 320      * @return A map of numbers to canonicalized number and uuid. If a number is not registered the uuid is null.
 321      * @throws IOException if its unable to get the contacts to check if they're registered
 322      */
 323     public Map<String, Pair<String, UUID>> areUsersRegistered(Set<String> numbers) throws IOException {
 324         Map<String, String> canonicalizedNumbers = numbers.stream().collect(Collectors.toMap(n -> n, n -> {
 325             try {
 326                 return PhoneNumberFormatter.formatNumber(n, account.getUsername());
 327             } catch (InvalidNumberException e) {
 328                 return "";
 329             }
 330         }));
 331
 332         // Note "registeredUsers" has no optionals. It only gives us info on users who are registered
 333         var registeredUsers = getRegisteredUsers(canonicalizedNumbers.values()
 334                 .stream()
 335                 .filter(s -> !s.isEmpty())
 336                 .collect(Collectors.toSet()));
 337
 338         return numbers.stream().collect(Collectors.toMap(n -> n, n -> {
 339             final var number = canonicalizedNumbers.get(n);
 340             final var uuid = registeredUsers.get(number);
 341             return new Pair<>(number.isEmpty() ? null : number, uuid);
 342         }));
 343     }
 344
 345     public void updateAccountAttributes(String deviceName) throws IOException {
 346         final String encryptedDeviceName;
 347         if (deviceName == null) {
 348             encryptedDeviceName = account.getEncryptedDeviceName();
 349         } else {
 350             final var privateKey = account.getIdentityKeyPair().getPrivateKey();
 351             encryptedDeviceName = DeviceNameUtil.encryptDeviceName(deviceName, privateKey);
 352             account.setEncryptedDeviceName(encryptedDeviceName);
 353         }
 354         dependencies.getAccountManager()
 355                 .setAccountAttributes(encryptedDeviceName,
 356                         null,
 357                         account.getLocalRegistrationId(),
 358                         true,
 359                         null,
 360                         account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 361                         account.getSelfUnidentifiedAccessKey(),
 362                         account.isUnrestrictedUnidentifiedAccess(),
 363                         capabilities,
 364                         account.isDiscoverableByPhoneNumber());
 365     }
 366
 367     /**
 368      * @param givenName  if null, the previous givenName will be kept
 369      * @param familyName if null, the previous familyName will be kept
 370      * @param about      if null, the previous about text will be kept
 371      * @param aboutEmoji if null, the previous about emoji will be kept
 372      * @param avatar     if avatar is null the image from the local avatar store is used (if present),
 373      */
 374     public void setProfile(
 375             String givenName, final String familyName, String about, String aboutEmoji, Optional<File> avatar
 376     ) throws IOException {
 377         profileHelper.setProfile(givenName, familyName, about, aboutEmoji, avatar);
 378         syncHelper.sendSyncFetchProfileMessage();
 379     }
 380
 381     public void unregister() throws IOException {
 382         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 383         // If this is the master device, other users can't send messages to this number anymore.
 384         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 385         dependencies.getAccountManager().setGcmId(Optional.absent());
 386
 387         account.setRegistered(false);
 388     }
 389
 390     public void deleteAccount() throws IOException {
 391         try {
 392             pinHelper.removeRegistrationLockPin();
 393         } catch (UnauthenticatedResponseException e) {
 394             logger.warn("Failed to remove registration lock pin");
 395         }
 396         account.setRegistrationLockPin(null, null);
 397
 398         dependencies.getAccountManager().deleteAccount();
 399
 400         account.setRegistered(false);
 401     }
 402
 403     public void submitRateLimitRecaptchaChallenge(String challenge, String captcha) throws IOException {
 404         dependencies.getAccountManager().submitRateLimitRecaptchaChallenge(challenge, captcha);
 405     }
 406
 407     public List<Device> getLinkedDevices() throws IOException {
 408         var devices = dependencies.getAccountManager().getDevices();
 409         account.setMultiDevice(devices.size() > 1);
 410         var identityKey = account.getIdentityKeyPair().getPrivateKey();
 411         return devices.stream().map(d -> {
 412             String deviceName = d.getName();
 413             if (deviceName != null) {
 414                 try {
 415                     deviceName = DeviceNameUtil.decryptDeviceName(deviceName, identityKey);
 416                 } catch (IOException e) {
 417                     logger.debug("Failed to decrypt device name, maybe plain text?", e);
 418                 }
 419             }
 420             return new Device(d.getId(), deviceName, d.getCreated(), d.getLastSeen());
 421         }).collect(Collectors.toList());
 422     }
 423
 424     public void removeLinkedDevices(int deviceId) throws IOException {
 425         dependencies.getAccountManager().removeDevice(deviceId);
 426         var devices = dependencies.getAccountManager().getDevices();
 427         account.setMultiDevice(devices.size() > 1);
 428     }
 429
 430     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 431         var info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 432
 433         addDevice(info.deviceIdentifier, info.deviceKey);
 434     }
 435
 436     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 437         var identityKeyPair = account.getIdentityKeyPair();
 438         var verificationCode = dependencies.getAccountManager().getNewDeviceVerificationCode();
 439
 440         dependencies.getAccountManager()
 441                 .addDevice(deviceIdentifier,
 442                         deviceKey,
 443                         identityKeyPair,
 444                         Optional.of(account.getProfileKey().serialize()),
 445                         verificationCode);
 446         account.setMultiDevice(true);
 447     }
 448
 449     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 450         if (!account.isMasterDevice()) {
 451             throw new RuntimeException("Only master device can set a PIN");
 452         }
 453         if (pin.isPresent()) {
 454             final var masterKey = account.getPinMasterKey() != null
 455                     ? account.getPinMasterKey()
 456                     : KeyUtils.createMasterKey();
 457
 458             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 459
 460             account.setRegistrationLockPin(pin.get(), masterKey);
 461         } else {
 462             // Remove KBS Pin
 463             pinHelper.removeRegistrationLockPin();
 464
 465             account.setRegistrationLockPin(null, null);
 466         }
 467     }
 468
 469     void refreshPreKeys() throws IOException {
 470         preKeyHelper.refreshPreKeys();
 471     }
 472
 473     public Profile getRecipientProfile(RecipientId recipientId) {
 474         return profileHelper.getRecipientProfile(recipientId);
 475     }
 476
 477     public List<GroupInfo> getGroups() {
 478         return account.getGroupStore().getGroups();
 479     }
 480
 481     public SendGroupMessageResults quitGroup(
 482             GroupId groupId, Set<RecipientIdentifier.Single> groupAdmins
 483     ) throws GroupNotFoundException, IOException, NotAGroupMemberException, LastGroupAdminException {
 484         final var newAdmins = resolveRecipients(groupAdmins);
 485         return groupHelper.quitGroup(groupId, newAdmins);
 486     }
 487
 488     public void deleteGroup(GroupId groupId) throws IOException {
 489         groupHelper.deleteGroup(groupId);
 490     }
 491
 492     public Pair<GroupId, SendGroupMessageResults> createGroup(
 493             String name, Set<RecipientIdentifier.Single> members, File avatarFile
 494     ) throws IOException, AttachmentInvalidException {
 495         return groupHelper.createGroup(name, members == null ? null : resolveRecipients(members), avatarFile);
 496     }
 497
 498     public SendGroupMessageResults updateGroup(
 499             GroupId groupId,
 500             String name,
 501             String description,
 502             Set<RecipientIdentifier.Single> members,
 503             Set<RecipientIdentifier.Single> removeMembers,
 504             Set<RecipientIdentifier.Single> admins,
 505             Set<RecipientIdentifier.Single> removeAdmins,
 506             boolean resetGroupLink,
 507             GroupLinkState groupLinkState,
 508             GroupPermission addMemberPermission,
 509             GroupPermission editDetailsPermission,
 510             File avatarFile,
 511             Integer expirationTimer,
 512             Boolean isAnnouncementGroup
 513     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException, GroupSendingNotAllowedException {
 514         return groupHelper.updateGroup(groupId,
 515                 name,
 516                 description,
 517                 members == null ? null : resolveRecipients(members),
 518                 removeMembers == null ? null : resolveRecipients(removeMembers),
 519                 admins == null ? null : resolveRecipients(admins),
 520                 removeAdmins == null ? null : resolveRecipients(removeAdmins),
 521                 resetGroupLink,
 522                 groupLinkState,
 523                 addMemberPermission,
 524                 editDetailsPermission,
 525                 avatarFile,
 526                 expirationTimer,
 527                 isAnnouncementGroup);
 528     }
 529
 530     public Pair<GroupId, SendGroupMessageResults> joinGroup(
 531             GroupInviteLinkUrl inviteLinkUrl
 532     ) throws IOException, GroupLinkNotActiveException {
 533         return groupHelper.joinGroup(inviteLinkUrl);
 534     }
 535
 536     public SendMessageResults sendMessage(
 537             SignalServiceDataMessage.Builder messageBuilder, Set<RecipientIdentifier> recipients
 538     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 539         var results = new HashMap<RecipientIdentifier, List<SendMessageResult>>();
 540         long timestamp = System.currentTimeMillis();
 541         messageBuilder.withTimestamp(timestamp);
 542         for (final var recipient : recipients) {
 543             if (recipient instanceof RecipientIdentifier.Single) {
 544                 final var recipientId = resolveRecipient((RecipientIdentifier.Single) recipient);
 545                 final var result = sendHelper.sendMessage(messageBuilder, recipientId);
 546                 results.put(recipient, List.of(result));
 547             } else if (recipient instanceof RecipientIdentifier.NoteToSelf) {
 548                 final var result = sendHelper.sendSelfMessage(messageBuilder);
 549                 results.put(recipient, List.of(result));
 550             } else if (recipient instanceof RecipientIdentifier.Group) {
 551                 final var groupId = ((RecipientIdentifier.Group) recipient).groupId;
 552                 final var result = sendHelper.sendAsGroupMessage(messageBuilder, groupId);
 553                 results.put(recipient, result);
 554             }
 555         }
 556         return new SendMessageResults(timestamp, results);
 557     }
 558
 559     public void sendTypingMessage(
 560             SignalServiceTypingMessage.Action action, Set<RecipientIdentifier> recipients
 561     ) throws IOException, UntrustedIdentityException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 562         final var timestamp = System.currentTimeMillis();
 563         for (var recipient : recipients) {
 564             if (recipient instanceof RecipientIdentifier.Single) {
 565                 final var message = new SignalServiceTypingMessage(action, timestamp, Optional.absent());
 566                 final var recipientId = resolveRecipient((RecipientIdentifier.Single) recipient);
 567                 sendHelper.sendTypingMessage(message, recipientId);
 568             } else if (recipient instanceof RecipientIdentifier.Group) {
 569                 final var groupId = ((RecipientIdentifier.Group) recipient).groupId;
 570                 final var message = new SignalServiceTypingMessage(action, timestamp, Optional.of(groupId.serialize()));
 571                 sendHelper.sendGroupTypingMessage(message, groupId);
 572             }
 573         }
 574     }
 575
 576     public void sendReadReceipt(
 577             RecipientIdentifier.Single sender, List<Long> messageIds
 578     ) throws IOException, UntrustedIdentityException {
 579         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.READ,
 580                 messageIds,
 581                 System.currentTimeMillis());
 582
 583         sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(sender));
 584     }
 585
 586     public void sendViewedReceipt(
 587             RecipientIdentifier.Single sender, List<Long> messageIds
 588     ) throws IOException, UntrustedIdentityException {
 589         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.VIEWED,
 590                 messageIds,
 591                 System.currentTimeMillis());
 592
 593         sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(sender));
 594     }
 595
 596     public SendMessageResults sendMessage(
 597             Message message, Set<RecipientIdentifier> recipients
 598     ) throws IOException, AttachmentInvalidException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 599         final var messageBuilder = SignalServiceDataMessage.newBuilder();
 600         applyMessage(messageBuilder, message);
 601         return sendMessage(messageBuilder, recipients);
 602     }
 603
 604     private void applyMessage(
 605             final SignalServiceDataMessage.Builder messageBuilder, final Message message
 606     ) throws AttachmentInvalidException, IOException {
 607         messageBuilder.withBody(message.getMessageText());
 608         final var attachments = message.getAttachments();
 609         if (attachments != null) {
 610             messageBuilder.withAttachments(attachmentHelper.uploadAttachments(attachments));
 611         }
 612     }
 613
 614     public SendMessageResults sendRemoteDeleteMessage(
 615             long targetSentTimestamp, Set<RecipientIdentifier> recipients
 616     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 617         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
 618         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
 619         return sendMessage(messageBuilder, recipients);
 620     }
 621
 622     public SendMessageResults sendMessageReaction(
 623             String emoji,
 624             boolean remove,
 625             RecipientIdentifier.Single targetAuthor,
 626             long targetSentTimestamp,
 627             Set<RecipientIdentifier> recipients
 628     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 629         var targetAuthorRecipientId = resolveRecipient(targetAuthor);
 630         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 631                 remove,
 632                 resolveSignalServiceAddress(targetAuthorRecipientId),
 633                 targetSentTimestamp);
 634         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
 635         return sendMessage(messageBuilder, recipients);
 636     }
 637
 638     public SendMessageResults sendEndSessionMessage(Set<RecipientIdentifier.Single> recipients) throws IOException {
 639         var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
 640
 641         try {
 642             return sendMessage(messageBuilder,
 643                     recipients.stream().map(RecipientIdentifier.class::cast).collect(Collectors.toSet()));
 644         } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
 645             throw new AssertionError(e);
 646         } finally {
 647             for (var recipient : recipients) {
 648                 final var recipientId = resolveRecipient(recipient);
 649                 account.getSessionStore().deleteAllSessions(recipientId);
 650             }
 651         }
 652     }
 653
 654     public void setContactName(
 655             RecipientIdentifier.Single recipient, String name
 656     ) throws NotMasterDeviceException, UnregisteredUserException {
 657         if (!account.isMasterDevice()) {
 658             throw new NotMasterDeviceException();
 659         }
 660         contactHelper.setContactName(resolveRecipient(recipient), name);
 661     }
 662
 663     public void setContactBlocked(
 664             RecipientIdentifier.Single recipient, boolean blocked
 665     ) throws NotMasterDeviceException, IOException {
 666         if (!account.isMasterDevice()) {
 667             throw new NotMasterDeviceException();
 668         }
 669         contactHelper.setContactBlocked(resolveRecipient(recipient), blocked);
 670         // TODO cycle our profile key
 671         syncHelper.sendBlockedList();
 672     }
 673
 674     public void setGroupBlocked(
 675             final GroupId groupId, final boolean blocked
 676     ) throws GroupNotFoundException, IOException {
 677         groupHelper.setGroupBlocked(groupId, blocked);
 678         // TODO cycle our profile key
 679         syncHelper.sendBlockedList();
 680     }
 681
 682     /**
 683      * Change the expiration timer for a contact
 684      */
 685     public void setExpirationTimer(
 686             RecipientIdentifier.Single recipient, int messageExpirationTimer
 687     ) throws IOException {
 688         var recipientId = resolveRecipient(recipient);
 689         contactHelper.setExpirationTimer(recipientId, messageExpirationTimer);
 690         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
 691         try {
 692             sendMessage(messageBuilder, Set.of(recipient));
 693         } catch (NotAGroupMemberException | GroupNotFoundException | GroupSendingNotAllowedException e) {
 694             throw new AssertionError(e);
 695         }
 696     }
 697
 698     /**
 699      * Upload the sticker pack from path.
 700      *
 701      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 702      * @return if successful, returns the URL to install the sticker pack in the signal app
 703      */
 704     public URI uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
 705         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
 706
 707         var messageSender = dependencies.getMessageSender();
 708
 709         var packKey = KeyUtils.createStickerUploadKey();
 710         var packIdString = messageSender.uploadStickerManifest(manifest, packKey);
 711         var packId = StickerPackId.deserialize(Hex.fromStringCondensed(packIdString));
 712
 713         var sticker = new Sticker(packId, packKey);
 714         account.getStickerStore().updateSticker(sticker);
 715
 716         try {
 717             return new URI("https",
 718                     "signal.art",
 719                     "/addstickers/",
 720                     "pack_id="
 721                             + URLEncoder.encode(Hex.toStringCondensed(packId.serialize()), StandardCharsets.UTF_8)
 722                             + "&pack_key="
 723                             + URLEncoder.encode(Hex.toStringCondensed(packKey), StandardCharsets.UTF_8));
 724         } catch (URISyntaxException e) {
 725             throw new AssertionError(e);
 726         }
 727     }
 728
 729     public void requestAllSyncData() throws IOException {
 730         syncHelper.requestAllSyncData();
 731         retrieveRemoteStorage();
 732     }
 733
 734     void retrieveRemoteStorage() throws IOException {
 735         if (account.getStorageKey() != null) {
 736             storageHelper.readDataFromStorage();
 737         }
 738     }
 739
 740     private byte[] getSenderCertificate() {
 741         byte[] certificate;
 742         try {
 743             if (account.isPhoneNumberShared()) {
 744                 certificate = dependencies.getAccountManager().getSenderCertificate();
 745             } else {
 746                 certificate = dependencies.getAccountManager().getSenderCertificateForPhoneNumberPrivacy();
 747             }
 748         } catch (IOException e) {
 749             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
 750             return null;
 751         }
 752         // TODO cache for a day
 753         return certificate;
 754     }
 755
 756     private RecipientId refreshRegisteredUser(RecipientId recipientId) throws IOException {
 757         final var address = resolveSignalServiceAddress(recipientId);
 758         if (!address.getNumber().isPresent()) {
 759             return recipientId;
 760         }
 761         final var number = address.getNumber().get();
 762         final var uuid = getRegisteredUser(number);
 763         return resolveRecipientTrusted(new SignalServiceAddress(uuid, number));
 764     }
 765
 766     private UUID getRegisteredUser(final String number) throws IOException {
 767         final Map<String, UUID> uuidMap;
 768         try {
 769             uuidMap = getRegisteredUsers(Set.of(number));
 770         } catch (NumberFormatException e) {
 771             throw new UnregisteredUserException(number, e);
 772         }
 773         final var uuid = uuidMap.get(number);
 774         if (uuid == null) {
 775             throw new UnregisteredUserException(number, null);
 776         }
 777         return uuid;
 778     }
 779
 780     private Map<String, UUID> getRegisteredUsers(final Set<String> numbers) throws IOException {
 781         final Map<String, UUID> registeredUsers;
 782         try {
 783             registeredUsers = dependencies.getAccountManager()
 784                     .getRegisteredUsers(ServiceConfig.getIasKeyStore(),
 785                             numbers,
 786                             serviceEnvironmentConfig.getCdsMrenclave());
 787         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
 788             throw new IOException(e);
 789         }
 790
 791         // Store numbers as recipients so we have the number/uuid association
 792         registeredUsers.forEach((number, uuid) -> resolveRecipientTrusted(new SignalServiceAddress(uuid, number)));
 793
 794         return registeredUsers;
 795     }
 796
 797     public void sendTypingMessage(
 798             TypingAction action, Set<RecipientIdentifier> recipients
 799     ) throws IOException, UntrustedIdentityException, NotAGroupMemberException, GroupNotFoundException, GroupSendingNotAllowedException {
 800         sendTypingMessage(action.toSignalService(), recipients);
 801     }
 802
 803     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
 804         Set<HandleAction> queuedActions = new HashSet<>();
 805         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
 806             var actions = retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
 807             if (actions != null) {
 808                 queuedActions.addAll(actions);
 809             }
 810         }
 811         handleQueuedActions(queuedActions);
 812     }
 813
 814     private List<HandleAction> retryFailedReceivedMessage(
 815             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
 816     ) {
 817         var envelope = cachedMessage.loadEnvelope();
 818         if (envelope == null) {
 819             cachedMessage.delete();
 820             return null;
 821         }
 822
 823         final var result = incomingMessageHandler.handleRetryEnvelope(envelope, ignoreAttachments, handler);
 824         final var actions = result.first();
 825         final var exception = result.second();
 826
 827         if (exception instanceof UntrustedIdentityException) {
 828             if (System.currentTimeMillis() - envelope.getServerDeliveredTimestamp() > 1000L * 60 * 60 * 24 * 30) {
 829                 // Envelope is more than a month old, cleaning up.
 830                 cachedMessage.delete();
 831                 return null;
 832             }
 833             if (!envelope.hasSourceUuid()) {
 834                 final var identifier = ((UntrustedIdentityException) exception).getSender();
 835                 final var recipientId = account.getRecipientStore().resolveRecipient(identifier);
 836                 try {
 837                     account.getMessageCache().replaceSender(cachedMessage, recipientId);
 838                 } catch (IOException ioException) {
 839                     logger.warn("Failed to move cached message to recipient folder: {}", ioException.getMessage());
 840                 }
 841             }
 842             return null;
 843         }
 844
 845         // If successful and for all other errors that are not recoverable, delete the cached message
 846         cachedMessage.delete();
 847         return actions;
 848     }
 849
 850     public void receiveMessages(
 851             long timeout,
 852             TimeUnit unit,
 853             boolean returnOnTimeout,
 854             boolean ignoreAttachments,
 855             ReceiveMessageHandler handler
 856     ) throws IOException {
 857         retryFailedReceivedMessages(handler, ignoreAttachments);
 858
 859         Set<HandleAction> queuedActions = new HashSet<>();
 860
 861         final var signalWebSocket = dependencies.getSignalWebSocket();
 862         signalWebSocket.connect();
 863
 864         hasCaughtUpWithOldMessages = false;
 865
 866         while (!Thread.interrupted()) {
 867             SignalServiceEnvelope envelope;
 868             final CachedMessage[] cachedMessage = {null};
 869             account.setLastReceiveTimestamp(System.currentTimeMillis());
 870             logger.debug("Checking for new message from server");
 871             try {
 872                 var result = signalWebSocket.readOrEmpty(unit.toMillis(timeout), envelope1 -> {
 873                     final var recipientId = envelope1.hasSourceUuid()
 874                             ? resolveRecipient(envelope1.getSourceAddress())
 875                             : null;
 876                     // store message on disk, before acknowledging receipt to the server
 877                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1, recipientId);
 878                 });
 879                 logger.debug("New message received from server");
 880                 if (result.isPresent()) {
 881                     envelope = result.get();
 882                 } else {
 883                     // Received indicator that server queue is empty
 884                     handleQueuedActions(queuedActions);
 885                     queuedActions.clear();
 886
 887                     hasCaughtUpWithOldMessages = true;
 888                     synchronized (this) {
 889                         this.notifyAll();
 890                     }
 891
 892                     // Continue to wait another timeout for new messages
 893                     continue;
 894                 }
 895             } catch (AssertionError e) {
 896                 if (e.getCause() instanceof InterruptedException) {
 897                     Thread.currentThread().interrupt();
 898                     break;
 899                 } else {
 900                     throw e;
 901                 }
 902             } catch (WebSocketUnavailableException e) {
 903                 logger.debug("Pipe unexpectedly unavailable, connecting");
 904                 signalWebSocket.connect();
 905                 continue;
 906             } catch (TimeoutException e) {
 907                 if (returnOnTimeout) return;
 908                 continue;
 909             }
 910
 911             final var result = incomingMessageHandler.handleEnvelope(envelope, ignoreAttachments, handler);
 912             queuedActions.addAll(result.first());
 913             final var exception = result.second();
 914
 915             if (hasCaughtUpWithOldMessages) {
 916                 handleQueuedActions(queuedActions);
 917             }
 918             if (cachedMessage[0] != null) {
 919                 if (exception instanceof UntrustedIdentityException) {
 920                     final var address = ((UntrustedIdentityException) exception).getSender();
 921                     final var recipientId = resolveRecipient(address);
 922                     if (!envelope.hasSourceUuid()) {
 923                         try {
 924                             cachedMessage[0] = account.getMessageCache().replaceSender(cachedMessage[0], recipientId);
 925                         } catch (IOException ioException) {
 926                             logger.warn("Failed to move cached message to recipient folder: {}",
 927                                     ioException.getMessage());
 928                         }
 929                     }
 930                 } else {
 931                     cachedMessage[0].delete();
 932                 }
 933             }
 934         }
 935         handleQueuedActions(queuedActions);
 936     }
 937
 938     public boolean hasCaughtUpWithOldMessages() {
 939         return hasCaughtUpWithOldMessages;
 940     }
 941
 942     private void handleQueuedActions(final Collection<HandleAction> queuedActions) {
 943         var interrupted = false;
 944         for (var action : queuedActions) {
 945             try {
 946                 action.execute(context);
 947             } catch (Throwable e) {
 948                 if ((e instanceof AssertionError || e instanceof RuntimeException)
 949                         && e.getCause() instanceof InterruptedException) {
 950                     interrupted = true;
 951                     continue;
 952                 }
 953                 logger.warn("Message action failed.", e);
 954             }
 955         }
 956         if (interrupted) {
 957             Thread.currentThread().interrupt();
 958         }
 959     }
 960
 961     public boolean isContactBlocked(final RecipientIdentifier.Single recipient) {
 962         final RecipientId recipientId;
 963         try {
 964             recipientId = resolveRecipient(recipient);
 965         } catch (UnregisteredUserException e) {
 966             return false;
 967         }
 968         return contactHelper.isContactBlocked(recipientId);
 969     }
 970
 971     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
 972         return attachmentHelper.getAttachmentFile(attachmentId);
 973     }
 974
 975     public void sendContacts() throws IOException {
 976         syncHelper.sendContacts();
 977     }
 978
 979     public List<Pair<RecipientId, Contact>> getContacts() {
 980         return account.getContactStore().getContacts();
 981     }
 982
 983     public String getContactOrProfileName(RecipientIdentifier.Single recipientIdentifier) {
 984         final RecipientId recipientId;
 985         try {
 986             recipientId = resolveRecipient(recipientIdentifier);
 987         } catch (UnregisteredUserException e) {
 988             return null;
 989         }
 990
 991         final var contact = account.getContactStore().getContact(recipientId);
 992         if (contact != null && !Util.isEmpty(contact.getName())) {
 993             return contact.getName();
 994         }
 995
 996         final var profile = getRecipientProfile(recipientId);
 997         if (profile != null) {
 998             return profile.getDisplayName();
 999         }
1000
1001         return null;
1002     }
1003
1004     public GroupInfo getGroup(GroupId groupId) {
1005         return groupHelper.getGroup(groupId);
1006     }
1007
1008     public List<IdentityInfo> getIdentities() {
1009         return account.getIdentityKeyStore().getIdentities();
1010     }
1011
1012     public List<IdentityInfo> getIdentities(RecipientIdentifier.Single recipient) {
1013         IdentityInfo identity;
1014         try {
1015             identity = account.getIdentityKeyStore().getIdentity(resolveRecipient(recipient));
1016         } catch (UnregisteredUserException e) {
1017             identity = null;
1018         }
1019         return identity == null ? List.of() : List.of(identity);
1020     }
1021
1022     /**
1023      * Trust this the identity with this fingerprint
1024      *
1025      * @param recipient   username of the identity
1026      * @param fingerprint Fingerprint
1027      */
1028     public boolean trustIdentityVerified(RecipientIdentifier.Single recipient, byte[] fingerprint) {
1029         RecipientId recipientId;
1030         try {
1031             recipientId = resolveRecipient(recipient);
1032         } catch (UnregisteredUserException e) {
1033             return false;
1034         }
1035         return trustIdentity(recipientId,
1036                 identityKey -> Arrays.equals(identityKey.serialize(), fingerprint),
1037                 TrustLevel.TRUSTED_VERIFIED);
1038     }
1039
1040     /**
1041      * Trust this the identity with this safety number
1042      *
1043      * @param recipient    username of the identity
1044      * @param safetyNumber Safety number
1045      */
1046     public boolean trustIdentityVerifiedSafetyNumber(RecipientIdentifier.Single recipient, String safetyNumber) {
1047         RecipientId recipientId;
1048         try {
1049             recipientId = resolveRecipient(recipient);
1050         } catch (UnregisteredUserException e) {
1051             return false;
1052         }
1053         var address = resolveSignalServiceAddress(recipientId);
1054         return trustIdentity(recipientId,
1055                 identityKey -> safetyNumber.equals(computeSafetyNumber(address, identityKey)),
1056                 TrustLevel.TRUSTED_VERIFIED);
1057     }
1058
1059     /**
1060      * Trust this the identity with this scannable safety number
1061      *
1062      * @param recipient    username of the identity
1063      * @param safetyNumber Scannable safety number
1064      */
1065     public boolean trustIdentityVerifiedSafetyNumber(RecipientIdentifier.Single recipient, byte[] safetyNumber) {
1066         RecipientId recipientId;
1067         try {
1068             recipientId = resolveRecipient(recipient);
1069         } catch (UnregisteredUserException e) {
1070             return false;
1071         }
1072         var address = resolveSignalServiceAddress(recipientId);
1073         return trustIdentity(recipientId, identityKey -> {
1074             final var fingerprint = computeSafetyNumberFingerprint(address, identityKey);
1075             try {
1076                 return fingerprint != null && fingerprint.getScannableFingerprint().compareTo(safetyNumber);
1077             } catch (FingerprintVersionMismatchException | FingerprintParsingException e) {
1078                 return false;
1079             }
1080         }, TrustLevel.TRUSTED_VERIFIED);
1081     }
1082
1083     /**
1084      * Trust all keys of this identity without verification
1085      *
1086      * @param recipient username of the identity
1087      */
1088     public boolean trustIdentityAllKeys(RecipientIdentifier.Single recipient) {
1089         RecipientId recipientId;
1090         try {
1091             recipientId = resolveRecipient(recipient);
1092         } catch (UnregisteredUserException e) {
1093             return false;
1094         }
1095         return trustIdentity(recipientId, identityKey -> true, TrustLevel.TRUSTED_UNVERIFIED);
1096     }
1097
1098     private boolean trustIdentity(
1099             RecipientId recipientId, Function<IdentityKey, Boolean> verifier, TrustLevel trustLevel
1100     ) {
1101         var identity = account.getIdentityKeyStore().getIdentity(recipientId);
1102         if (identity == null) {
1103             return false;
1104         }
1105
1106         if (!verifier.apply(identity.getIdentityKey())) {
1107             return false;
1108         }
1109
1110         account.getIdentityKeyStore().setIdentityTrustLevel(recipientId, identity.getIdentityKey(), trustLevel);
1111         try {
1112             var address = resolveSignalServiceAddress(recipientId);
1113             syncHelper.sendVerifiedMessage(address, identity.getIdentityKey(), trustLevel);
1114         } catch (IOException e) {
1115             logger.warn("Failed to send verification sync message: {}", e.getMessage());
1116         }
1117
1118         return true;
1119     }
1120
1121     private void handleIdentityFailure(
1122             final RecipientId recipientId, final SendMessageResult.IdentityFailure identityFailure
1123     ) {
1124         final var identityKey = identityFailure.getIdentityKey();
1125         if (identityKey != null) {
1126             final var newIdentity = account.getIdentityKeyStore().saveIdentity(recipientId, identityKey, new Date());
1127             if (newIdentity) {
1128                 account.getSessionStore().archiveSessions(recipientId);
1129             }
1130         } else {
1131             // Retrieve profile to get the current identity key from the server
1132             profileHelper.refreshRecipientProfile(recipientId);
1133         }
1134     }
1135
1136     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
1137         final Fingerprint fingerprint = computeSafetyNumberFingerprint(theirAddress, theirIdentityKey);
1138         return fingerprint == null ? null : fingerprint.getDisplayableFingerprint().getDisplayText();
1139     }
1140
1141     public byte[] computeSafetyNumberForScanning(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
1142         final Fingerprint fingerprint = computeSafetyNumberFingerprint(theirAddress, theirIdentityKey);
1143         return fingerprint == null ? null : fingerprint.getScannableFingerprint().getSerialized();
1144     }
1145
1146     private Fingerprint computeSafetyNumberFingerprint(
1147             final SignalServiceAddress theirAddress, final IdentityKey theirIdentityKey
1148     ) {
1149         return Utils.computeSafetyNumber(capabilities.isUuid(),
1150                 account.getSelfAddress(),
1151                 account.getIdentityKeyPair().getPublicKey(),
1152                 theirAddress,
1153                 theirIdentityKey);
1154     }
1155
1156     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
1157         return resolveSignalServiceAddress(resolveRecipient(address));
1158     }
1159
1160     public SignalServiceAddress resolveSignalServiceAddress(UUID uuid) {
1161         return resolveSignalServiceAddress(account.getRecipientStore().resolveRecipient(uuid));
1162     }
1163
1164     public SignalServiceAddress resolveSignalServiceAddress(RecipientId recipientId) {
1165         final var address = account.getRecipientStore().resolveRecipientAddress(recipientId);
1166         if (address.getUuid().isPresent()) {
1167             return address.toSignalServiceAddress();
1168         }
1169
1170         // Address in recipient store doesn't have a uuid, this shouldn't happen
1171         // Try to retrieve the uuid from the server
1172         final var number = address.getNumber().get();
1173         try {
1174             return resolveSignalServiceAddress(getRegisteredUser(number));
1175         } catch (IOException e) {
1176             logger.warn("Failed to get uuid for e164 number: {}", number, e);
1177             // Return SignalServiceAddress with unknown UUID
1178             return address.toSignalServiceAddress();
1179         }
1180     }
1181
1182     private Set<RecipientId> resolveRecipients(Collection<RecipientIdentifier.Single> recipients) throws UnregisteredUserException {
1183         final var recipientIds = new HashSet<RecipientId>(recipients.size());
1184         for (var number : recipients) {
1185             final var recipientId = resolveRecipient(number);
1186             recipientIds.add(recipientId);
1187         }
1188         return recipientIds;
1189     }
1190
1191     private RecipientId resolveRecipient(final RecipientIdentifier.Single recipient) throws UnregisteredUserException {
1192         if (recipient instanceof RecipientIdentifier.Uuid) {
1193             return account.getRecipientStore().resolveRecipient(((RecipientIdentifier.Uuid) recipient).uuid);
1194         } else {
1195             final var number = ((RecipientIdentifier.Number) recipient).number;
1196             return account.getRecipientStore().resolveRecipient(number, () -> {
1197                 try {
1198                     return getRegisteredUser(number);
1199                 } catch (IOException e) {
1200                     return null;
1201                 }
1202             });
1203         }
1204     }
1205
1206     private RecipientId resolveRecipient(SignalServiceAddress address) {
1207         return account.getRecipientStore().resolveRecipient(address);
1208     }
1209
1210     private RecipientId resolveRecipientTrusted(SignalServiceAddress address) {
1211         return account.getRecipientStore().resolveRecipientTrusted(address);
1212     }
1213
1214     @Override
1215     public void close() throws IOException {
1216         close(true);
1217     }
1218
1219     private void close(boolean closeAccount) throws IOException {
1220         executor.shutdown();
1221
1222         dependencies.getSignalWebSocket().disconnect();
1223
1224         if (closeAccount && account != null) {
1225             account.close();
1226         }
1227         account = null;
1228     }
1229
1230     public interface ReceiveMessageHandler {
1231
1232         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
1233     }
1234 }