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