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

   1 package org.asamk.signal.manager.helper;
   2
   3 import org.asamk.signal.manager.api.CaptchaRequiredException;
   4 import org.asamk.signal.manager.api.DeviceLinkUrl;
   5 import org.asamk.signal.manager.api.IncorrectPinException;
   6 import org.asamk.signal.manager.api.InvalidDeviceLinkException;
   7 import org.asamk.signal.manager.api.NonNormalizedPhoneNumberException;
   8 import org.asamk.signal.manager.api.PinLockedException;
   9 import org.asamk.signal.manager.api.RateLimitException;
  10 import org.asamk.signal.manager.api.VerificationMethodNotAvailableException;
  11 import org.asamk.signal.manager.internal.SignalDependencies;
  12 import org.asamk.signal.manager.jobs.SyncStorageJob;
  13 import org.asamk.signal.manager.storage.SignalAccount;
  14 import org.asamk.signal.manager.util.KeyUtils;
  15 import org.asamk.signal.manager.util.NumberVerificationUtils;
  16 import org.asamk.signal.manager.util.Utils;
  17 import org.signal.core.util.Base64;
  18 import org.signal.libsignal.protocol.IdentityKeyPair;
  19 import org.signal.libsignal.protocol.InvalidKeyException;
  20 import org.signal.libsignal.protocol.SignalProtocolAddress;
  21 import org.signal.libsignal.protocol.state.KyberPreKeyRecord;
  22 import org.signal.libsignal.protocol.state.SignedPreKeyRecord;
  23 import org.signal.libsignal.protocol.util.KeyHelper;
  24 import org.signal.libsignal.usernames.BaseUsernameException;
  25 import org.signal.libsignal.usernames.Username;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28 import org.whispersystems.signalservice.api.account.ChangePhoneNumberRequest;
  29 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  30 import org.whispersystems.signalservice.api.push.ServiceId.ACI;
  31 import org.whispersystems.signalservice.api.push.ServiceId.PNI;
  32 import org.whispersystems.signalservice.api.push.ServiceIdType;
  33 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  34 import org.whispersystems.signalservice.api.push.SignedPreKeyEntity;
  35 import org.whispersystems.signalservice.api.push.exceptions.AlreadyVerifiedException;
  36 import org.whispersystems.signalservice.api.push.exceptions.AuthorizationFailedException;
  37 import org.whispersystems.signalservice.api.push.exceptions.DeprecatedVersionException;
  38 import org.whispersystems.signalservice.api.push.exceptions.UsernameIsNotReservedException;
  39 import org.whispersystems.signalservice.api.push.exceptions.UsernameMalformedException;
  40 import org.whispersystems.signalservice.api.push.exceptions.UsernameTakenException;
  41 import org.whispersystems.signalservice.api.util.DeviceNameUtil;
  42 import org.whispersystems.signalservice.internal.push.DeviceLimitExceededException;
  43 import org.whispersystems.signalservice.internal.push.KyberPreKeyEntity;
  44 import org.whispersystems.signalservice.internal.push.OutgoingPushMessage;
  45 import org.whispersystems.signalservice.internal.push.SyncMessage;
  46 import org.whispersystems.signalservice.internal.push.exceptions.MismatchedDevicesException;
  47
  48 import java.io.IOException;
  49 import java.util.ArrayList;
  50 import java.util.HashMap;
  51 import java.util.List;
  52 import java.util.Objects;
  53 import java.util.Optional;
  54 import java.util.concurrent.TimeUnit;
  55
  56 import okio.ByteString;
  57
  58 import static org.asamk.signal.manager.config.ServiceConfig.PREKEY_MAXIMUM_ID;
  59 import static org.whispersystems.signalservice.internal.util.Util.isEmpty;
  60
  61 public class AccountHelper {
  62
  63     private static final Logger logger = LoggerFactory.getLogger(AccountHelper.class);
  64
  65     private final Context context;
  66     private final SignalAccount account;
  67     private final SignalDependencies dependencies;
  68
  69     private Callable unregisteredListener;
  70
  71     public AccountHelper(final Context context) {
  72         this.account = context.getAccount();
  73         this.dependencies = context.getDependencies();
  74         this.context = context;
  75     }
  76
  77     public void setUnregisteredListener(final Callable unregisteredListener) {
  78         this.unregisteredListener = unregisteredListener;
  79     }
  80
  81     public void checkAccountState() throws IOException {
  82         if (account.getLastReceiveTimestamp() == 0) {
  83             logger.info("The Signal protocol expects that incoming messages are regularly received.");
  84         } else {
  85             var diffInMilliseconds = System.currentTimeMillis() - account.getLastReceiveTimestamp();
  86             long days = TimeUnit.DAYS.convert(diffInMilliseconds, TimeUnit.MILLISECONDS);
  87             if (days > 7) {
  88                 logger.warn(
  89                         "Messages have been last received {} days ago. The Signal protocol expects that incoming messages are regularly received.",
  90                         days);
  91             }
  92         }
  93         try {
  94             updateAccountAttributes();
  95             if (account.getPreviousStorageVersion() < 9) {
  96                 context.getPreKeyHelper().forceRefreshPreKeys();
  97             } else {
  98                 context.getPreKeyHelper().refreshPreKeysIfNecessary();
  99             }
 100             if (account.getAci() == null || account.getPni() == null) {
 101                 checkWhoAmiI();
 102             }
 103             if (!account.isPrimaryDevice() && account.getPniIdentityKeyPair() == null) {
 104                 context.getSyncHelper().requestSyncPniIdentity();
 105             }
 106             if (account.getPreviousStorageVersion() < 4
 107                     && account.isPrimaryDevice()
 108                     && account.getRegistrationLockPin() != null) {
 109                 migrateRegistrationPin();
 110             }
 111             if (account.getUsername() != null && account.getUsernameLink() == null) {
 112                 try {
 113                     tryToSetUsernameLink(new Username(account.getUsername()));
 114                 } catch (BaseUsernameException e) {
 115                     logger.debug("Invalid local username");
 116                 }
 117             }
 118         } catch (DeprecatedVersionException e) {
 119             logger.debug("Signal-Server returned deprecated version exception", e);
 120             throw e;
 121         } catch (AuthorizationFailedException e) {
 122             account.setRegistered(false);
 123             throw e;
 124         }
 125     }
 126
 127     public void checkWhoAmiI() throws IOException {
 128         final var whoAmI = dependencies.getAccountManager().getWhoAmI();
 129         final var number = whoAmI.getNumber();
 130         final var aci = ACI.parseOrThrow(whoAmI.getAci());
 131         final var pni = PNI.parseOrThrow(whoAmI.getPni());
 132         if (number.equals(account.getNumber()) && aci.equals(account.getAci()) && pni.equals(account.getPni())) {
 133             return;
 134         }
 135
 136         updateSelfIdentifiers(number, aci, pni);
 137     }
 138
 139     private void updateSelfIdentifiers(final String number, final ACI aci, final PNI pni) {
 140         account.setNumber(number);
 141         account.setAci(aci);
 142         account.setPni(pni);
 143         if (account.isPrimaryDevice() && account.getPniIdentityKeyPair() == null) {
 144             account.setPniIdentityKeyPair(KeyUtils.generateIdentityKeyPair());
 145         }
 146         account.getRecipientTrustedResolver().resolveSelfRecipientTrusted(account.getSelfRecipientAddress());
 147         context.getUnidentifiedAccessHelper().rotateSenderCertificates();
 148         dependencies.resetAfterAddressChange();
 149         context.getGroupV2Helper().clearAuthCredentialCache();
 150         context.getAccountFileUpdater().updateAccountIdentifiers(account.getNumber(), account.getAci());
 151         context.getJobExecutor().enqueueJob(new SyncStorageJob());
 152     }
 153
 154     public void setPni(
 155             final PNI updatedPni,
 156             final IdentityKeyPair pniIdentityKeyPair,
 157             final String number,
 158             final int localPniRegistrationId,
 159             final SignedPreKeyRecord pniSignedPreKey,
 160             final KyberPreKeyRecord lastResortKyberPreKey
 161     ) throws IOException {
 162         updateSelfIdentifiers(number != null ? number : account.getNumber(), account.getAci(), updatedPni);
 163         account.setNewPniIdentity(pniIdentityKeyPair, pniSignedPreKey, lastResortKyberPreKey, localPniRegistrationId);
 164         context.getPreKeyHelper().refreshPreKeysIfNecessary(ServiceIdType.PNI);
 165     }
 166
 167     public void startChangeNumber(
 168             String newNumber, boolean voiceVerification, String captcha
 169     ) throws IOException, CaptchaRequiredException, NonNormalizedPhoneNumberException, RateLimitException, VerificationMethodNotAvailableException {
 170         final var accountManager = dependencies.createUnauthenticatedAccountManager(newNumber, account.getPassword());
 171         String sessionId = NumberVerificationUtils.handleVerificationSession(accountManager,
 172                 account.getSessionId(newNumber),
 173                 id -> account.setSessionId(newNumber, id),
 174                 voiceVerification,
 175                 captcha);
 176         NumberVerificationUtils.requestVerificationCode(accountManager, sessionId, voiceVerification);
 177     }
 178
 179     public void finishChangeNumber(
 180             String newNumber, String verificationCode, String pin
 181     ) throws IncorrectPinException, PinLockedException, IOException {
 182         for (var attempts = 0; attempts < 5; attempts++) {
 183             try {
 184                 finishChangeNumberInternal(newNumber, verificationCode, pin);
 185                 break;
 186             } catch (MismatchedDevicesException e) {
 187                 logger.debug("Change number failed with mismatched devices, retrying.");
 188                 try {
 189                     dependencies.getMessageSender().handleChangeNumberMismatchDevices(e.getMismatchedDevices());
 190                 } catch (UntrustedIdentityException ex) {
 191                     throw new AssertionError(ex);
 192                 }
 193             }
 194         }
 195     }
 196
 197     private void finishChangeNumberInternal(
 198             String newNumber, String verificationCode, String pin
 199     ) throws IncorrectPinException, PinLockedException, IOException {
 200         final var pniIdentity = KeyUtils.generateIdentityKeyPair();
 201         final var encryptedDeviceMessages = new ArrayList<OutgoingPushMessage>();
 202         final var devicePniSignedPreKeys = new HashMap<Integer, SignedPreKeyEntity>();
 203         final var devicePniLastResortKyberPreKeys = new HashMap<Integer, KyberPreKeyEntity>();
 204         final var pniRegistrationIds = new HashMap<Integer, Integer>();
 205
 206         final var selfDeviceId = account.getDeviceId();
 207         SyncMessage.PniChangeNumber selfChangeNumber = null;
 208
 209         final var deviceIds = new ArrayList<Integer>();
 210         deviceIds.add(SignalServiceAddress.DEFAULT_DEVICE_ID);
 211         final var aci = account.getAci();
 212         final var accountDataStore = account.getSignalServiceDataStore().aci();
 213         final var subDeviceSessions = accountDataStore.getSubDeviceSessions(aci.toString())
 214                 .stream()
 215                 .filter(deviceId -> accountDataStore.containsSession(new SignalProtocolAddress(aci.toString(),
 216                         deviceId)))
 217                 .toList();
 218         deviceIds.addAll(subDeviceSessions);
 219
 220         final var messageSender = dependencies.getMessageSender();
 221         for (final var deviceId : deviceIds) {
 222             // Signed Prekey
 223             final SignedPreKeyRecord signedPreKeyRecord;
 224             try {
 225                 signedPreKeyRecord = KeyUtils.generateSignedPreKeyRecord(KeyUtils.getRandomInt(PREKEY_MAXIMUM_ID),
 226                         pniIdentity.getPrivateKey());
 227                 final var signedPreKeyEntity = new SignedPreKeyEntity(signedPreKeyRecord.getId(),
 228                         signedPreKeyRecord.getKeyPair().getPublicKey(),
 229                         signedPreKeyRecord.getSignature());
 230                 devicePniSignedPreKeys.put(deviceId, signedPreKeyEntity);
 231             } catch (InvalidKeyException e) {
 232                 throw new AssertionError("unexpected invalid key", e);
 233             }
 234
 235             // Last-resort kyber prekey
 236             final KyberPreKeyRecord lastResortKyberPreKeyRecord;
 237             try {
 238                 lastResortKyberPreKeyRecord = KeyUtils.generateKyberPreKeyRecord(KeyUtils.getRandomInt(PREKEY_MAXIMUM_ID),
 239                         pniIdentity.getPrivateKey());
 240                 final var kyberPreKeyEntity = new KyberPreKeyEntity(lastResortKyberPreKeyRecord.getId(),
 241                         lastResortKyberPreKeyRecord.getKeyPair().getPublicKey(),
 242                         lastResortKyberPreKeyRecord.getSignature());
 243                 devicePniLastResortKyberPreKeys.put(deviceId, kyberPreKeyEntity);
 244             } catch (InvalidKeyException e) {
 245                 throw new AssertionError("unexpected invalid key", e);
 246             }
 247
 248             // Registration Id
 249             var pniRegistrationId = -1;
 250             while (pniRegistrationId < 0 || pniRegistrationIds.containsValue(pniRegistrationId)) {
 251                 pniRegistrationId = KeyHelper.generateRegistrationId(false);
 252             }
 253             pniRegistrationIds.put(deviceId, pniRegistrationId);
 254
 255             // Device Message
 256             final var pniChangeNumber = new SyncMessage.PniChangeNumber.Builder().identityKeyPair(ByteString.of(
 257                             pniIdentity.serialize()))
 258                     .signedPreKey(ByteString.of(signedPreKeyRecord.serialize()))
 259                     .lastResortKyberPreKey(ByteString.of(lastResortKyberPreKeyRecord.serialize()))
 260                     .registrationId(pniRegistrationId)
 261                     .newE164(newNumber)
 262                     .build();
 263
 264             if (deviceId == selfDeviceId) {
 265                 selfChangeNumber = pniChangeNumber;
 266             } else {
 267                 try {
 268                     final var message = messageSender.getEncryptedSyncPniInitializeDeviceMessage(deviceId,
 269                             pniChangeNumber);
 270                     encryptedDeviceMessages.add(message);
 271                 } catch (UntrustedIdentityException | IOException | InvalidKeyException e) {
 272                     throw new RuntimeException(e);
 273                 }
 274             }
 275         }
 276
 277         final var sessionId = account.getSessionId(newNumber);
 278         final var result = NumberVerificationUtils.verifyNumber(sessionId,
 279                 verificationCode,
 280                 pin,
 281                 context.getPinHelper(),
 282                 (sessionId1, verificationCode1, registrationLock) -> {
 283                     final var accountManager = dependencies.getAccountManager();
 284                     try {
 285                         Utils.handleResponseException(accountManager.verifyAccount(verificationCode1, sessionId1));
 286                     } catch (AlreadyVerifiedException e) {
 287                         // Already verified so can continue changing number
 288                     }
 289                     return Utils.handleResponseException(accountManager.changeNumber(new ChangePhoneNumberRequest(
 290                             sessionId1,
 291                             null,
 292                             newNumber,
 293                             registrationLock,
 294                             pniIdentity.getPublicKey(),
 295                             encryptedDeviceMessages,
 296                             Utils.mapKeys(devicePniSignedPreKeys, Object::toString),
 297                             Utils.mapKeys(devicePniLastResortKyberPreKeys, Object::toString),
 298                             Utils.mapKeys(pniRegistrationIds, Object::toString))));
 299                 });
 300
 301         final var updatePni = PNI.parseOrThrow(result.first().getPni());
 302         if (updatePni.equals(account.getPni())) {
 303             logger.debug("PNI is unchanged after change number");
 304             return;
 305         }
 306
 307         handlePniChangeNumberMessage(selfChangeNumber, updatePni);
 308     }
 309
 310     public void handlePniChangeNumberMessage(
 311             final SyncMessage.PniChangeNumber pniChangeNumber, final PNI updatedPni
 312     ) {
 313         if (pniChangeNumber.identityKeyPair != null
 314                 && pniChangeNumber.registrationId != null
 315                 && pniChangeNumber.signedPreKey != null) {
 316             logger.debug("New PNI: {}", updatedPni);
 317             try {
 318                 setPni(updatedPni,
 319                         new IdentityKeyPair(pniChangeNumber.identityKeyPair.toByteArray()),
 320                         pniChangeNumber.newE164,
 321                         pniChangeNumber.registrationId,
 322                         new SignedPreKeyRecord(pniChangeNumber.signedPreKey.toByteArray()),
 323                         pniChangeNumber.lastResortKyberPreKey != null
 324                                 ? new KyberPreKeyRecord(pniChangeNumber.lastResortKyberPreKey.toByteArray())
 325                                 : null);
 326             } catch (Exception e) {
 327                 logger.warn("Failed to handle change number message", e);
 328             }
 329         }
 330     }
 331
 332     public static final int USERNAME_MIN_LENGTH = 3;
 333     public static final int USERNAME_MAX_LENGTH = 32;
 334
 335     public void reserveUsernameFromNickname(String nickname) throws IOException, BaseUsernameException {
 336         final var currentUsername = account.getUsername();
 337         if (currentUsername != null) {
 338             final var currentNickname = currentUsername.substring(0, currentUsername.indexOf('.'));
 339             if (currentNickname.equals(nickname)) {
 340                 try {
 341                     refreshCurrentUsername();
 342                     return;
 343                 } catch (IOException | BaseUsernameException e) {
 344                     logger.warn("[reserveUsername] Failed to refresh current username, trying to claim new username");
 345                 }
 346             }
 347         }
 348
 349         final var candidates = Username.candidatesFrom(nickname, USERNAME_MIN_LENGTH, USERNAME_MAX_LENGTH);
 350         reserveUsername(candidates);
 351     }
 352
 353     public void reserveExactUsername(String username) throws IOException, BaseUsernameException {
 354         final var currentUsername = account.getUsername();
 355         if (currentUsername != null) {
 356             if (currentUsername.equals(username)) {
 357                 try {
 358                     refreshCurrentUsername();
 359                     return;
 360                 } catch (IOException | BaseUsernameException e) {
 361                     logger.warn("[reserveUsername] Failed to refresh current username, trying to claim new username");
 362                 }
 363             }
 364         }
 365
 366         final var candidates = List.of(new Username(username));
 367         reserveUsername(candidates);
 368     }
 369
 370     private void reserveUsername(final List<Username> candidates) throws IOException {
 371         final var candidateHashes = new ArrayList<String>();
 372         for (final var candidate : candidates) {
 373             candidateHashes.add(Base64.encodeUrlSafeWithoutPadding(candidate.getHash()));
 374         }
 375
 376         final var response = dependencies.getAccountManager().reserveUsername(candidateHashes);
 377         final var hashIndex = candidateHashes.indexOf(response.getUsernameHash());
 378         if (hashIndex == -1) {
 379             logger.warn("[reserveUsername] The response hash could not be found in our set of candidateHashes.");
 380             throw new IOException("Unexpected username response");
 381         }
 382
 383         logger.debug("[reserveUsername] Successfully reserved username.");
 384         final var username = candidates.get(hashIndex);
 385
 386         final var linkComponents = dependencies.getAccountManager().confirmUsernameAndCreateNewLink(username);
 387         account.setUsername(username.getUsername());
 388         account.setUsernameLink(linkComponents);
 389         account.getRecipientStore().resolveSelfRecipientTrusted(account.getSelfRecipientAddress());
 390         account.getRecipientStore().rotateSelfStorageId();
 391         logger.debug("[confirmUsername] Successfully confirmed username.");
 392     }
 393
 394     public void refreshCurrentUsername() throws IOException, BaseUsernameException {
 395         final var localUsername = account.getUsername();
 396         if (localUsername == null) {
 397             return;
 398         }
 399
 400         final var whoAmIResponse = dependencies.getAccountManager().getWhoAmI();
 401         final var serverUsernameHash = whoAmIResponse.getUsernameHash();
 402         final var hasServerUsername = !isEmpty(serverUsernameHash);
 403         final var username = new Username(localUsername);
 404         final var localUsernameHash = Base64.encodeUrlSafeWithoutPadding(username.getHash());
 405
 406         if (!hasServerUsername) {
 407             logger.debug("No remote username is set.");
 408         }
 409
 410         if (!Objects.equals(localUsernameHash, serverUsernameHash)) {
 411             logger.debug("Local username hash does not match server username hash.");
 412         }
 413
 414         if (!hasServerUsername || !Objects.equals(localUsernameHash, serverUsernameHash)) {
 415             logger.debug("Attempting to resynchronize username.");
 416             try {
 417                 tryReserveConfirmUsername(username);
 418             } catch (UsernameMalformedException | UsernameTakenException | UsernameIsNotReservedException e) {
 419                 logger.debug("[confirmUsername] Failed to reserve confirm username: {} ({})",
 420                         e.getMessage(),
 421                         e.getClass().getSimpleName());
 422                 account.setUsername(null);
 423                 account.setUsernameLink(null);
 424                 account.getRecipientStore().rotateSelfStorageId();
 425                 throw e;
 426             }
 427         } else {
 428             logger.debug("Username already set, not refreshing.");
 429         }
 430     }
 431
 432     private void tryReserveConfirmUsername(final Username username) throws IOException {
 433         final var usernameLink = account.getUsernameLink();
 434
 435         if (usernameLink == null) {
 436             dependencies.getAccountManager()
 437                     .reserveUsername(List.of(Base64.encodeUrlSafeWithoutPadding(username.getHash())));
 438             logger.debug("[reserveUsername] Successfully reserved existing username.");
 439             final var linkComponents = dependencies.getAccountManager().confirmUsernameAndCreateNewLink(username);
 440             account.setUsernameLink(linkComponents);
 441             logger.debug("[confirmUsername] Successfully confirmed existing username.");
 442         } else {
 443             final var linkComponents = dependencies.getAccountManager().reclaimUsernameAndLink(username, usernameLink);
 444             account.setUsernameLink(linkComponents);
 445             logger.debug("[confirmUsername] Successfully reclaimed existing username and link.");
 446         }
 447         account.getRecipientStore().rotateSelfStorageId();
 448     }
 449
 450     private void tryToSetUsernameLink(Username username) {
 451         for (var i = 1; i < 4; i++) {
 452             try {
 453                 final var linkComponents = dependencies.getAccountManager().createUsernameLink(username);
 454                 account.setUsernameLink(linkComponents);
 455                 break;
 456             } catch (IOException e) {
 457                 logger.debug("[tryToSetUsernameLink] Failed with IOException on attempt {}/3", i, e);
 458             }
 459         }
 460     }
 461
 462     public void deleteUsername() throws IOException {
 463         dependencies.getAccountManager().deleteUsernameLink();
 464         account.setUsernameLink(null);
 465         dependencies.getAccountManager().deleteUsername();
 466         account.setUsername(null);
 467         logger.debug("[deleteUsername] Successfully deleted the username.");
 468     }
 469
 470     public void setDeviceName(String deviceName) {
 471         final var privateKey = account.getAciIdentityKeyPair().getPrivateKey();
 472         final var encryptedDeviceName = DeviceNameUtil.encryptDeviceName(deviceName, privateKey);
 473         account.setEncryptedDeviceName(encryptedDeviceName);
 474     }
 475
 476     public void updateAccountAttributes() throws IOException {
 477         dependencies.getAccountManager().setAccountAttributes(account.getAccountAttributes(null));
 478     }
 479
 480     public void addDevice(DeviceLinkUrl deviceLinkInfo) throws IOException, InvalidDeviceLinkException, org.asamk.signal.manager.api.DeviceLimitExceededException {
 481         String verificationCode;
 482         try {
 483             verificationCode = dependencies.getAccountManager().getNewDeviceVerificationCode();
 484         } catch (DeviceLimitExceededException e) {
 485             throw new org.asamk.signal.manager.api.DeviceLimitExceededException("Too many linked devices", e);
 486         }
 487
 488         try {
 489             dependencies.getAccountManager()
 490                     .addDevice(deviceLinkInfo.deviceIdentifier(),
 491                             deviceLinkInfo.deviceKey(),
 492                             account.getAciIdentityKeyPair(),
 493                             account.getPniIdentityKeyPair(),
 494                             account.getProfileKey(),
 495                             account.getOrCreatePinMasterKey(),
 496                             verificationCode);
 497         } catch (InvalidKeyException e) {
 498             throw new InvalidDeviceLinkException("Invalid device link", e);
 499         }
 500         account.setMultiDevice(true);
 501         context.getJobExecutor().enqueueJob(new SyncStorageJob());
 502     }
 503
 504     public void removeLinkedDevices(int deviceId) throws IOException {
 505         dependencies.getAccountManager().removeDevice(deviceId);
 506         var devices = dependencies.getAccountManager().getDevices();
 507         account.setMultiDevice(devices.size() > 1);
 508     }
 509
 510     public void migrateRegistrationPin() throws IOException {
 511         var masterKey = account.getOrCreatePinMasterKey();
 512
 513         context.getPinHelper().migrateRegistrationLockPin(account.getRegistrationLockPin(), masterKey);
 514         dependencies.getAccountManager().enableRegistrationLock(masterKey);
 515     }
 516
 517     public void setRegistrationPin(String pin) throws IOException {
 518         var masterKey = account.getOrCreatePinMasterKey();
 519
 520         context.getPinHelper().setRegistrationLockPin(pin, masterKey);
 521         dependencies.getAccountManager().enableRegistrationLock(masterKey);
 522
 523         account.setRegistrationLockPin(pin);
 524         updateAccountAttributes();
 525     }
 526
 527     public void removeRegistrationPin() throws IOException {
 528         // Remove KBS Pin
 529         context.getPinHelper().removeRegistrationLockPin();
 530         dependencies.getAccountManager().disableRegistrationLock();
 531
 532         account.setRegistrationLockPin(null);
 533     }
 534
 535     public void unregister() throws IOException {
 536         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 537         // If this is the primary device, other users can't send messages to this number anymore.
 538         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 539         dependencies.getAccountManager().setGcmId(Optional.empty());
 540
 541         account.setRegistered(false);
 542         unregisteredListener.call();
 543     }
 544
 545     public void deleteAccount() throws IOException {
 546         try {
 547             context.getPinHelper().removeRegistrationLockPin();
 548         } catch (IOException e) {
 549             logger.warn("Failed to remove registration lock pin");
 550         }
 551         account.setRegistrationLockPin(null);
 552
 553         dependencies.getAccountManager().deleteAccount();
 554
 555         account.setRegistered(false);
 556         unregisteredListener.call();
 557     }
 558
 559     public interface Callable {
 560
 561         void call();
 562     }
 563 }