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 var signedPreKeyRecord = KeyUtils.generateSignedPreKeyRecord(KeyUtils.getRandomInt(PREKEY_MAXIMUM_ID),
 224                     pniIdentity.getPrivateKey());
 225             final var signedPreKeyEntity = new SignedPreKeyEntity(signedPreKeyRecord.getId(),
 226                     signedPreKeyRecord.getKeyPair().getPublicKey(),
 227                     signedPreKeyRecord.getSignature());
 228             devicePniSignedPreKeys.put(deviceId, signedPreKeyEntity);
 229
 230             // Last-resort kyber prekey
 231             final var lastResortKyberPreKeyRecord = KeyUtils.generateKyberPreKeyRecord(KeyUtils.getRandomInt(
 232                     PREKEY_MAXIMUM_ID), pniIdentity.getPrivateKey());
 233             final var kyberPreKeyEntity = new KyberPreKeyEntity(lastResortKyberPreKeyRecord.getId(),
 234                     lastResortKyberPreKeyRecord.getKeyPair().getPublicKey(),
 235                     lastResortKyberPreKeyRecord.getSignature());
 236             devicePniLastResortKyberPreKeys.put(deviceId, kyberPreKeyEntity);
 237
 238             // Registration Id
 239             var pniRegistrationId = -1;
 240             while (pniRegistrationId < 0 || pniRegistrationIds.containsValue(pniRegistrationId)) {
 241                 pniRegistrationId = KeyHelper.generateRegistrationId(false);
 242             }
 243             pniRegistrationIds.put(deviceId, pniRegistrationId);
 244
 245             // Device Message
 246             final var pniChangeNumber = new SyncMessage.PniChangeNumber.Builder().identityKeyPair(ByteString.of(
 247                             pniIdentity.serialize()))
 248                     .signedPreKey(ByteString.of(signedPreKeyRecord.serialize()))
 249                     .lastResortKyberPreKey(ByteString.of(lastResortKyberPreKeyRecord.serialize()))
 250                     .registrationId(pniRegistrationId)
 251                     .newE164(newNumber)
 252                     .build();
 253
 254             if (deviceId == selfDeviceId) {
 255                 selfChangeNumber = pniChangeNumber;
 256             } else {
 257                 try {
 258                     final var message = messageSender.getEncryptedSyncPniInitializeDeviceMessage(deviceId,
 259                             pniChangeNumber);
 260                     encryptedDeviceMessages.add(message);
 261                 } catch (UntrustedIdentityException | IOException | InvalidKeyException e) {
 262                     throw new RuntimeException(e);
 263                 }
 264             }
 265         }
 266
 267         final var sessionId = account.getSessionId(newNumber);
 268         final var result = NumberVerificationUtils.verifyNumber(sessionId,
 269                 verificationCode,
 270                 pin,
 271                 context.getPinHelper(),
 272                 (sessionId1, verificationCode1, registrationLock) -> {
 273                     final var accountManager = dependencies.getAccountManager();
 274                     try {
 275                         Utils.handleResponseException(accountManager.verifyAccount(verificationCode1, sessionId1));
 276                     } catch (AlreadyVerifiedException e) {
 277                         // Already verified so can continue changing number
 278                     }
 279                     return Utils.handleResponseException(accountManager.changeNumber(new ChangePhoneNumberRequest(
 280                             sessionId1,
 281                             null,
 282                             newNumber,
 283                             registrationLock,
 284                             pniIdentity.getPublicKey(),
 285                             encryptedDeviceMessages,
 286                             Utils.mapKeys(devicePniSignedPreKeys, Object::toString),
 287                             Utils.mapKeys(devicePniLastResortKyberPreKeys, Object::toString),
 288                             Utils.mapKeys(pniRegistrationIds, Object::toString))));
 289                 });
 290
 291         final var updatePni = PNI.parseOrThrow(result.first().getPni());
 292         if (updatePni.equals(account.getPni())) {
 293             logger.debug("PNI is unchanged after change number");
 294             return;
 295         }
 296
 297         handlePniChangeNumberMessage(selfChangeNumber, updatePni);
 298     }
 299
 300     public void handlePniChangeNumberMessage(
 301             final SyncMessage.PniChangeNumber pniChangeNumber, final PNI updatedPni
 302     ) {
 303         if (pniChangeNumber.identityKeyPair != null
 304                 && pniChangeNumber.registrationId != null
 305                 && pniChangeNumber.signedPreKey != null) {
 306             logger.debug("New PNI: {}", updatedPni);
 307             try {
 308                 setPni(updatedPni,
 309                         new IdentityKeyPair(pniChangeNumber.identityKeyPair.toByteArray()),
 310                         pniChangeNumber.newE164,
 311                         pniChangeNumber.registrationId,
 312                         new SignedPreKeyRecord(pniChangeNumber.signedPreKey.toByteArray()),
 313                         pniChangeNumber.lastResortKyberPreKey != null
 314                                 ? new KyberPreKeyRecord(pniChangeNumber.lastResortKyberPreKey.toByteArray())
 315                                 : null);
 316             } catch (Exception e) {
 317                 logger.warn("Failed to handle change number message", e);
 318             }
 319         }
 320     }
 321
 322     public static final int USERNAME_MIN_LENGTH = 3;
 323     public static final int USERNAME_MAX_LENGTH = 32;
 324
 325     public void reserveUsernameFromNickname(String nickname) throws IOException, BaseUsernameException {
 326         final var currentUsername = account.getUsername();
 327         if (currentUsername != null) {
 328             final var currentNickname = currentUsername.substring(0, currentUsername.indexOf('.'));
 329             if (currentNickname.equals(nickname)) {
 330                 try {
 331                     refreshCurrentUsername();
 332                     return;
 333                 } catch (IOException | BaseUsernameException e) {
 334                     logger.warn("[reserveUsername] Failed to refresh current username, trying to claim new username");
 335                 }
 336             }
 337         }
 338
 339         final var candidates = Username.candidatesFrom(nickname, USERNAME_MIN_LENGTH, USERNAME_MAX_LENGTH);
 340         reserveUsername(candidates);
 341     }
 342
 343     public void reserveExactUsername(String username) throws IOException, BaseUsernameException {
 344         final var currentUsername = account.getUsername();
 345         if (currentUsername != null) {
 346             if (currentUsername.equals(username)) {
 347                 try {
 348                     refreshCurrentUsername();
 349                     return;
 350                 } catch (IOException | BaseUsernameException e) {
 351                     logger.warn("[reserveUsername] Failed to refresh current username, trying to claim new username");
 352                 }
 353             }
 354         }
 355
 356         final var candidates = List.of(new Username(username));
 357         reserveUsername(candidates);
 358     }
 359
 360     private void reserveUsername(final List<Username> candidates) throws IOException {
 361         final var candidateHashes = new ArrayList<String>();
 362         for (final var candidate : candidates) {
 363             candidateHashes.add(Base64.encodeUrlSafeWithoutPadding(candidate.getHash()));
 364         }
 365
 366         final var response = dependencies.getAccountManager().reserveUsername(candidateHashes);
 367         final var hashIndex = candidateHashes.indexOf(response.getUsernameHash());
 368         if (hashIndex == -1) {
 369             logger.warn("[reserveUsername] The response hash could not be found in our set of candidateHashes.");
 370             throw new IOException("Unexpected username response");
 371         }
 372
 373         logger.debug("[reserveUsername] Successfully reserved username.");
 374         final var username = candidates.get(hashIndex);
 375
 376         final var linkComponents = dependencies.getAccountManager().confirmUsernameAndCreateNewLink(username);
 377         account.setUsername(username.getUsername());
 378         account.setUsernameLink(linkComponents);
 379         account.getRecipientStore().resolveSelfRecipientTrusted(account.getSelfRecipientAddress());
 380         account.getRecipientStore().rotateSelfStorageId();
 381         logger.debug("[confirmUsername] Successfully confirmed username.");
 382     }
 383
 384     public void refreshCurrentUsername() throws IOException, BaseUsernameException {
 385         final var localUsername = account.getUsername();
 386         if (localUsername == null) {
 387             return;
 388         }
 389
 390         final var whoAmIResponse = dependencies.getAccountManager().getWhoAmI();
 391         final var serverUsernameHash = whoAmIResponse.getUsernameHash();
 392         final var hasServerUsername = !isEmpty(serverUsernameHash);
 393         final var username = new Username(localUsername);
 394         final var localUsernameHash = Base64.encodeUrlSafeWithoutPadding(username.getHash());
 395
 396         if (!hasServerUsername) {
 397             logger.debug("No remote username is set.");
 398         }
 399
 400         if (!Objects.equals(localUsernameHash, serverUsernameHash)) {
 401             logger.debug("Local username hash does not match server username hash.");
 402         }
 403
 404         if (!hasServerUsername || !Objects.equals(localUsernameHash, serverUsernameHash)) {
 405             logger.debug("Attempting to resynchronize username.");
 406             try {
 407                 tryReserveConfirmUsername(username);
 408             } catch (UsernameMalformedException | UsernameTakenException | UsernameIsNotReservedException e) {
 409                 logger.debug("[confirmUsername] Failed to reserve confirm username: {} ({})",
 410                         e.getMessage(),
 411                         e.getClass().getSimpleName());
 412                 account.setUsername(null);
 413                 account.setUsernameLink(null);
 414                 account.getRecipientStore().rotateSelfStorageId();
 415                 throw e;
 416             }
 417         } else {
 418             logger.debug("Username already set, not refreshing.");
 419         }
 420     }
 421
 422     private void tryReserveConfirmUsername(final Username username) throws IOException {
 423         final var usernameLink = account.getUsernameLink();
 424
 425         if (usernameLink == null) {
 426             dependencies.getAccountManager()
 427                     .reserveUsername(List.of(Base64.encodeUrlSafeWithoutPadding(username.getHash())));
 428             logger.debug("[reserveUsername] Successfully reserved existing username.");
 429             final var linkComponents = dependencies.getAccountManager().confirmUsernameAndCreateNewLink(username);
 430             account.setUsernameLink(linkComponents);
 431             logger.debug("[confirmUsername] Successfully confirmed existing username.");
 432         } else {
 433             final var linkComponents = dependencies.getAccountManager().reclaimUsernameAndLink(username, usernameLink);
 434             account.setUsernameLink(linkComponents);
 435             logger.debug("[confirmUsername] Successfully reclaimed existing username and link.");
 436         }
 437         account.getRecipientStore().rotateSelfStorageId();
 438     }
 439
 440     private void tryToSetUsernameLink(Username username) {
 441         for (var i = 1; i < 4; i++) {
 442             try {
 443                 final var linkComponents = dependencies.getAccountManager().createUsernameLink(username);
 444                 account.setUsernameLink(linkComponents);
 445                 break;
 446             } catch (IOException e) {
 447                 logger.debug("[tryToSetUsernameLink] Failed with IOException on attempt {}/3", i, e);
 448             }
 449         }
 450     }
 451
 452     public void deleteUsername() throws IOException {
 453         dependencies.getAccountManager().deleteUsernameLink();
 454         account.setUsernameLink(null);
 455         dependencies.getAccountManager().deleteUsername();
 456         account.setUsername(null);
 457         logger.debug("[deleteUsername] Successfully deleted the username.");
 458     }
 459
 460     public void setDeviceName(String deviceName) {
 461         final var privateKey = account.getAciIdentityKeyPair().getPrivateKey();
 462         final var encryptedDeviceName = DeviceNameUtil.encryptDeviceName(deviceName, privateKey);
 463         account.setEncryptedDeviceName(encryptedDeviceName);
 464     }
 465
 466     public void updateAccountAttributes() throws IOException {
 467         dependencies.getAccountManager().setAccountAttributes(account.getAccountAttributes(null));
 468     }
 469
 470     public void addDevice(DeviceLinkUrl deviceLinkInfo) throws IOException, InvalidDeviceLinkException, org.asamk.signal.manager.api.DeviceLimitExceededException {
 471         String verificationCode;
 472         try {
 473             verificationCode = dependencies.getAccountManager().getNewDeviceVerificationCode();
 474         } catch (DeviceLimitExceededException e) {
 475             throw new org.asamk.signal.manager.api.DeviceLimitExceededException("Too many linked devices", e);
 476         }
 477
 478         try {
 479             dependencies.getAccountManager()
 480                     .addDevice(deviceLinkInfo.deviceIdentifier(),
 481                             deviceLinkInfo.deviceKey(),
 482                             account.getAciIdentityKeyPair(),
 483                             account.getPniIdentityKeyPair(),
 484                             account.getProfileKey(),
 485                             account.getOrCreatePinMasterKey(),
 486                             verificationCode);
 487         } catch (InvalidKeyException e) {
 488             throw new InvalidDeviceLinkException("Invalid device link", e);
 489         }
 490         account.setMultiDevice(true);
 491         context.getJobExecutor().enqueueJob(new SyncStorageJob());
 492     }
 493
 494     public void removeLinkedDevices(int deviceId) throws IOException {
 495         dependencies.getAccountManager().removeDevice(deviceId);
 496         var devices = dependencies.getAccountManager().getDevices();
 497         account.setMultiDevice(devices.size() > 1);
 498     }
 499
 500     public void migrateRegistrationPin() throws IOException {
 501         var masterKey = account.getOrCreatePinMasterKey();
 502
 503         context.getPinHelper().migrateRegistrationLockPin(account.getRegistrationLockPin(), masterKey);
 504         dependencies.getAccountManager().enableRegistrationLock(masterKey);
 505     }
 506
 507     public void setRegistrationPin(String pin) throws IOException {
 508         var masterKey = account.getOrCreatePinMasterKey();
 509
 510         context.getPinHelper().setRegistrationLockPin(pin, masterKey);
 511         dependencies.getAccountManager().enableRegistrationLock(masterKey);
 512
 513         account.setRegistrationLockPin(pin);
 514         updateAccountAttributes();
 515     }
 516
 517     public void removeRegistrationPin() throws IOException {
 518         // Remove KBS Pin
 519         context.getPinHelper().removeRegistrationLockPin();
 520         dependencies.getAccountManager().disableRegistrationLock();
 521
 522         account.setRegistrationLockPin(null);
 523     }
 524
 525     public void unregister() throws IOException {
 526         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 527         // If this is the primary device, other users can't send messages to this number anymore.
 528         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 529         dependencies.getAccountManager().setGcmId(Optional.empty());
 530
 531         account.setRegistered(false);
 532         unregisteredListener.call();
 533     }
 534
 535     public void deleteAccount() throws IOException {
 536         try {
 537             context.getPinHelper().removeRegistrationLockPin();
 538         } catch (IOException e) {
 539             logger.warn("Failed to remove registration lock pin");
 540         }
 541         account.setRegistrationLockPin(null);
 542
 543         dependencies.getAccountManager().deleteAccount();
 544
 545         account.setRegistered(false);
 546         unregisteredListener.call();
 547     }
 548
 549     public interface Callable {
 550
 551         void call();
 552     }
 553 }