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,
 169             boolean voiceVerification,
 170             String captcha
 171     ) throws IOException, CaptchaRequiredException, NonNormalizedPhoneNumberException, RateLimitException, VerificationMethodNotAvailableException {
 172         final var accountManager = dependencies.createUnauthenticatedAccountManager(newNumber, account.getPassword());
 173         final var registrationApi = accountManager.getRegistrationApi();
 174         String sessionId = NumberVerificationUtils.handleVerificationSession(registrationApi,
 175                 account.getSessionId(newNumber),
 176                 id -> account.setSessionId(newNumber, id),
 177                 voiceVerification,
 178                 captcha);
 179         NumberVerificationUtils.requestVerificationCode(registrationApi, sessionId, voiceVerification);
 180     }
 181
 182     public void finishChangeNumber(
 183             String newNumber,
 184             String verificationCode,
 185             String pin
 186     ) throws IncorrectPinException, PinLockedException, IOException {
 187         for (var attempts = 0; attempts < 5; attempts++) {
 188             try {
 189                 finishChangeNumberInternal(newNumber, verificationCode, pin);
 190                 break;
 191             } catch (MismatchedDevicesException e) {
 192                 logger.debug("Change number failed with mismatched devices, retrying.");
 193                 try {
 194                     dependencies.getMessageSender().handleChangeNumberMismatchDevices(e.getMismatchedDevices());
 195                 } catch (UntrustedIdentityException ex) {
 196                     throw new AssertionError(ex);
 197                 }
 198             }
 199         }
 200     }
 201
 202     private void finishChangeNumberInternal(
 203             String newNumber,
 204             String verificationCode,
 205             String pin
 206     ) throws IncorrectPinException, PinLockedException, IOException {
 207         final var pniIdentity = KeyUtils.generateIdentityKeyPair();
 208         final var encryptedDeviceMessages = new ArrayList<OutgoingPushMessage>();
 209         final var devicePniSignedPreKeys = new HashMap<Integer, SignedPreKeyEntity>();
 210         final var devicePniLastResortKyberPreKeys = new HashMap<Integer, KyberPreKeyEntity>();
 211         final var pniRegistrationIds = new HashMap<Integer, Integer>();
 212
 213         final var selfDeviceId = account.getDeviceId();
 214         SyncMessage.PniChangeNumber selfChangeNumber = null;
 215
 216         final var deviceIds = new ArrayList<Integer>();
 217         deviceIds.add(SignalServiceAddress.DEFAULT_DEVICE_ID);
 218         final var aci = account.getAci();
 219         final var accountDataStore = account.getSignalServiceDataStore().aci();
 220         final var subDeviceSessions = accountDataStore.getSubDeviceSessions(aci.toString())
 221                 .stream()
 222                 .filter(deviceId -> accountDataStore.containsSession(new SignalProtocolAddress(aci.toString(),
 223                         deviceId)))
 224                 .toList();
 225         deviceIds.addAll(subDeviceSessions);
 226
 227         final var messageSender = dependencies.getMessageSender();
 228         for (final var deviceId : deviceIds) {
 229             // Signed Prekey
 230             final SignedPreKeyRecord signedPreKeyRecord;
 231             try {
 232                 signedPreKeyRecord = KeyUtils.generateSignedPreKeyRecord(KeyUtils.getRandomInt(PREKEY_MAXIMUM_ID),
 233                         pniIdentity.getPrivateKey());
 234                 final var signedPreKeyEntity = new SignedPreKeyEntity(signedPreKeyRecord.getId(),
 235                         signedPreKeyRecord.getKeyPair().getPublicKey(),
 236                         signedPreKeyRecord.getSignature());
 237                 devicePniSignedPreKeys.put(deviceId, signedPreKeyEntity);
 238             } catch (InvalidKeyException e) {
 239                 throw new AssertionError("unexpected invalid key", e);
 240             }
 241
 242             // Last-resort kyber prekey
 243             final KyberPreKeyRecord lastResortKyberPreKeyRecord;
 244             try {
 245                 lastResortKyberPreKeyRecord = KeyUtils.generateKyberPreKeyRecord(KeyUtils.getRandomInt(PREKEY_MAXIMUM_ID),
 246                         pniIdentity.getPrivateKey());
 247                 final var kyberPreKeyEntity = new KyberPreKeyEntity(lastResortKyberPreKeyRecord.getId(),
 248                         lastResortKyberPreKeyRecord.getKeyPair().getPublicKey(),
 249                         lastResortKyberPreKeyRecord.getSignature());
 250                 devicePniLastResortKyberPreKeys.put(deviceId, kyberPreKeyEntity);
 251             } catch (InvalidKeyException e) {
 252                 throw new AssertionError("unexpected invalid key", e);
 253             }
 254
 255             // Registration Id
 256             var pniRegistrationId = -1;
 257             while (pniRegistrationId < 0 || pniRegistrationIds.containsValue(pniRegistrationId)) {
 258                 pniRegistrationId = KeyHelper.generateRegistrationId(false);
 259             }
 260             pniRegistrationIds.put(deviceId, pniRegistrationId);
 261
 262             // Device Message
 263             final var pniChangeNumber = new SyncMessage.PniChangeNumber.Builder().identityKeyPair(ByteString.of(
 264                             pniIdentity.serialize()))
 265                     .signedPreKey(ByteString.of(signedPreKeyRecord.serialize()))
 266                     .lastResortKyberPreKey(ByteString.of(lastResortKyberPreKeyRecord.serialize()))
 267                     .registrationId(pniRegistrationId)
 268                     .newE164(newNumber)
 269                     .build();
 270
 271             if (deviceId == selfDeviceId) {
 272                 selfChangeNumber = pniChangeNumber;
 273             } else {
 274                 try {
 275                     final var message = messageSender.getEncryptedSyncPniInitializeDeviceMessage(deviceId,
 276                             pniChangeNumber);
 277                     encryptedDeviceMessages.add(message);
 278                 } catch (UntrustedIdentityException | IOException | InvalidKeyException e) {
 279                     throw new RuntimeException(e);
 280                 }
 281             }
 282         }
 283
 284         final var sessionId = account.getSessionId(newNumber);
 285         final var result = NumberVerificationUtils.verifyNumber(sessionId,
 286                 verificationCode,
 287                 pin,
 288                 context.getPinHelper(),
 289                 (sessionId1, verificationCode1, registrationLock) -> {
 290                     final var registrationApi = dependencies.getRegistrationApi();
 291                     try {
 292                         Utils.handleResponseException(registrationApi.verifyAccount(sessionId1, verificationCode1));
 293                     } catch (AlreadyVerifiedException e) {
 294                         // Already verified so can continue changing number
 295                     }
 296                     return Utils.handleResponseException(registrationApi.changeNumber(new ChangePhoneNumberRequest(
 297                             sessionId1,
 298                             null,
 299                             newNumber,
 300                             registrationLock,
 301                             pniIdentity.getPublicKey(),
 302                             encryptedDeviceMessages,
 303                             Utils.mapKeys(devicePniSignedPreKeys, Object::toString),
 304                             Utils.mapKeys(devicePniLastResortKyberPreKeys, Object::toString),
 305                             Utils.mapKeys(pniRegistrationIds, Object::toString))));
 306                 });
 307
 308         final var updatePni = PNI.parseOrThrow(result.first().getPni());
 309         if (updatePni.equals(account.getPni())) {
 310             logger.debug("PNI is unchanged after change number");
 311             return;
 312         }
 313
 314         handlePniChangeNumberMessage(selfChangeNumber, updatePni);
 315     }
 316
 317     public void handlePniChangeNumberMessage(final SyncMessage.PniChangeNumber pniChangeNumber, final PNI updatedPni) {
 318         if (pniChangeNumber.identityKeyPair != null
 319                 && pniChangeNumber.registrationId != null
 320                 && pniChangeNumber.signedPreKey != null) {
 321             logger.debug("New PNI: {}", updatedPni);
 322             try {
 323                 setPni(updatedPni,
 324                         new IdentityKeyPair(pniChangeNumber.identityKeyPair.toByteArray()),
 325                         pniChangeNumber.newE164,
 326                         pniChangeNumber.registrationId,
 327                         new SignedPreKeyRecord(pniChangeNumber.signedPreKey.toByteArray()),
 328                         pniChangeNumber.lastResortKyberPreKey != null
 329                                 ? new KyberPreKeyRecord(pniChangeNumber.lastResortKyberPreKey.toByteArray())
 330                                 : null);
 331             } catch (Exception e) {
 332                 logger.warn("Failed to handle change number message", e);
 333             }
 334         }
 335     }
 336
 337     public static final int USERNAME_MIN_LENGTH = 3;
 338     public static final int USERNAME_MAX_LENGTH = 32;
 339
 340     public void reserveUsernameFromNickname(String nickname) throws IOException, BaseUsernameException {
 341         final var currentUsername = account.getUsername();
 342         if (currentUsername != null) {
 343             final var currentNickname = currentUsername.substring(0, currentUsername.indexOf('.'));
 344             if (currentNickname.equals(nickname)) {
 345                 try {
 346                     refreshCurrentUsername();
 347                     return;
 348                 } catch (IOException | BaseUsernameException e) {
 349                     logger.warn("[reserveUsername] Failed to refresh current username, trying to claim new username");
 350                 }
 351             }
 352         }
 353
 354         final var candidates = Username.candidatesFrom(nickname, USERNAME_MIN_LENGTH, USERNAME_MAX_LENGTH);
 355         reserveUsername(candidates);
 356     }
 357
 358     public void reserveExactUsername(String username) throws IOException, BaseUsernameException {
 359         final var currentUsername = account.getUsername();
 360         if (currentUsername != null) {
 361             if (currentUsername.equals(username)) {
 362                 try {
 363                     refreshCurrentUsername();
 364                     return;
 365                 } catch (IOException | BaseUsernameException e) {
 366                     logger.warn("[reserveUsername] Failed to refresh current username, trying to claim new username");
 367                 }
 368             }
 369         }
 370
 371         final var candidates = List.of(new Username(username));
 372         reserveUsername(candidates);
 373     }
 374
 375     private void reserveUsername(final List<Username> candidates) throws IOException {
 376         final var candidateHashes = new ArrayList<String>();
 377         for (final var candidate : candidates) {
 378             candidateHashes.add(Base64.encodeUrlSafeWithoutPadding(candidate.getHash()));
 379         }
 380
 381         final var response = dependencies.getAccountManager().reserveUsername(candidateHashes);
 382         final var hashIndex = candidateHashes.indexOf(response.getUsernameHash());
 383         if (hashIndex == -1) {
 384             logger.warn("[reserveUsername] The response hash could not be found in our set of candidateHashes.");
 385             throw new IOException("Unexpected username response");
 386         }
 387
 388         logger.debug("[reserveUsername] Successfully reserved username.");
 389         final var username = candidates.get(hashIndex);
 390
 391         final var linkComponents = dependencies.getAccountManager().confirmUsernameAndCreateNewLink(username);
 392         account.setUsername(username.getUsername());
 393         account.setUsernameLink(linkComponents);
 394         account.getRecipientStore().resolveSelfRecipientTrusted(account.getSelfRecipientAddress());
 395         account.getRecipientStore().rotateSelfStorageId();
 396         logger.debug("[confirmUsername] Successfully confirmed username.");
 397     }
 398
 399     public void refreshCurrentUsername() throws IOException, BaseUsernameException {
 400         final var localUsername = account.getUsername();
 401         if (localUsername == null) {
 402             return;
 403         }
 404
 405         final var whoAmIResponse = dependencies.getAccountManager().getWhoAmI();
 406         final var serverUsernameHash = whoAmIResponse.getUsernameHash();
 407         final var hasServerUsername = !isEmpty(serverUsernameHash);
 408         final var username = new Username(localUsername);
 409         final var localUsernameHash = Base64.encodeUrlSafeWithoutPadding(username.getHash());
 410
 411         if (!hasServerUsername) {
 412             logger.debug("No remote username is set.");
 413         }
 414
 415         if (!Objects.equals(localUsernameHash, serverUsernameHash)) {
 416             logger.debug("Local username hash does not match server username hash.");
 417         }
 418
 419         if (!hasServerUsername || !Objects.equals(localUsernameHash, serverUsernameHash)) {
 420             logger.debug("Attempting to resynchronize username.");
 421             try {
 422                 tryReserveConfirmUsername(username);
 423             } catch (UsernameMalformedException | UsernameTakenException | UsernameIsNotReservedException e) {
 424                 logger.debug("[confirmUsername] Failed to reserve confirm username: {} ({})",
 425                         e.getMessage(),
 426                         e.getClass().getSimpleName());
 427                 account.setUsername(null);
 428                 account.setUsernameLink(null);
 429                 account.getRecipientStore().rotateSelfStorageId();
 430                 throw e;
 431             }
 432         } else {
 433             logger.debug("Username already set, not refreshing.");
 434         }
 435     }
 436
 437     private void tryReserveConfirmUsername(final Username username) throws IOException {
 438         final var usernameLink = account.getUsernameLink();
 439
 440         if (usernameLink == null) {
 441             dependencies.getAccountManager()
 442                     .reserveUsername(List.of(Base64.encodeUrlSafeWithoutPadding(username.getHash())));
 443             logger.debug("[reserveUsername] Successfully reserved existing username.");
 444             final var linkComponents = dependencies.getAccountManager().confirmUsernameAndCreateNewLink(username);
 445             account.setUsernameLink(linkComponents);
 446             logger.debug("[confirmUsername] Successfully confirmed existing username.");
 447         } else {
 448             final var linkComponents = dependencies.getAccountManager().reclaimUsernameAndLink(username, usernameLink);
 449             account.setUsernameLink(linkComponents);
 450             logger.debug("[confirmUsername] Successfully reclaimed existing username and link.");
 451         }
 452         account.getRecipientStore().rotateSelfStorageId();
 453     }
 454
 455     private void tryToSetUsernameLink(Username username) {
 456         for (var i = 1; i < 4; i++) {
 457             try {
 458                 final var linkComponents = dependencies.getAccountManager().createUsernameLink(username);
 459                 account.setUsernameLink(linkComponents);
 460                 break;
 461             } catch (IOException e) {
 462                 logger.debug("[tryToSetUsernameLink] Failed with IOException on attempt {}/3", i, e);
 463             }
 464         }
 465     }
 466
 467     public void deleteUsername() throws IOException {
 468         dependencies.getAccountManager().deleteUsernameLink();
 469         account.setUsernameLink(null);
 470         dependencies.getAccountManager().deleteUsername();
 471         account.setUsername(null);
 472         logger.debug("[deleteUsername] Successfully deleted the username.");
 473     }
 474
 475     public void setDeviceName(String deviceName) {
 476         final var privateKey = account.getAciIdentityKeyPair().getPrivateKey();
 477         final var encryptedDeviceName = DeviceNameUtil.encryptDeviceName(deviceName, privateKey);
 478         account.setEncryptedDeviceName(encryptedDeviceName);
 479     }
 480
 481     public void updateAccountAttributes() throws IOException {
 482         dependencies.getAccountManager().setAccountAttributes(account.getAccountAttributes(null));
 483     }
 484
 485     public void addDevice(DeviceLinkUrl deviceLinkInfo) throws IOException, InvalidDeviceLinkException, org.asamk.signal.manager.api.DeviceLimitExceededException {
 486         String verificationCode;
 487         try {
 488             verificationCode = dependencies.getAccountManager().getNewDeviceVerificationCode();
 489         } catch (DeviceLimitExceededException e) {
 490             throw new org.asamk.signal.manager.api.DeviceLimitExceededException("Too many linked devices", e);
 491         }
 492
 493         try {
 494             dependencies.getAccountManager()
 495                     .addDevice(deviceLinkInfo.deviceIdentifier(),
 496                             deviceLinkInfo.deviceKey(),
 497                             account.getAciIdentityKeyPair(),
 498                             account.getPniIdentityKeyPair(),
 499                             account.getProfileKey(),
 500                             account.getOrCreatePinMasterKey(),
 501                             verificationCode);
 502         } catch (InvalidKeyException e) {
 503             throw new InvalidDeviceLinkException("Invalid device link", e);
 504         }
 505         account.setMultiDevice(true);
 506         context.getJobExecutor().enqueueJob(new SyncStorageJob());
 507     }
 508
 509     public void removeLinkedDevices(int deviceId) throws IOException {
 510         dependencies.getAccountManager().removeDevice(deviceId);
 511         var devices = dependencies.getAccountManager().getDevices();
 512         account.setMultiDevice(devices.size() > 1);
 513     }
 514
 515     public void migrateRegistrationPin() throws IOException {
 516         var masterKey = account.getOrCreatePinMasterKey();
 517
 518         context.getPinHelper().migrateRegistrationLockPin(account.getRegistrationLockPin(), masterKey);
 519         dependencies.getAccountManager().enableRegistrationLock(masterKey);
 520     }
 521
 522     public void setRegistrationPin(String pin) throws IOException {
 523         var masterKey = account.getOrCreatePinMasterKey();
 524
 525         context.getPinHelper().setRegistrationLockPin(pin, masterKey);
 526         dependencies.getAccountManager().enableRegistrationLock(masterKey);
 527
 528         account.setRegistrationLockPin(pin);
 529         updateAccountAttributes();
 530     }
 531
 532     public void removeRegistrationPin() throws IOException {
 533         // Remove KBS Pin
 534         context.getPinHelper().removeRegistrationLockPin();
 535         dependencies.getAccountManager().disableRegistrationLock();
 536
 537         account.setRegistrationLockPin(null);
 538     }
 539
 540     public void unregister() throws IOException {
 541         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 542         // If this is the primary device, other users can't send messages to this number anymore.
 543         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 544         dependencies.getAccountManager().setGcmId(Optional.empty());
 545
 546         account.setRegistered(false);
 547         unregisteredListener.call();
 548     }
 549
 550     public void deleteAccount() throws IOException {
 551         try {
 552             context.getPinHelper().removeRegistrationLockPin();
 553         } catch (IOException e) {
 554             logger.warn("Failed to remove registration lock pin");
 555         }
 556         account.setRegistrationLockPin(null);
 557
 558         dependencies.getAccountManager().deleteAccount();
 559
 560         account.setRegistered(false);
 561         unregisteredListener.call();
 562     }
 563
 564     public interface Callable {
 565
 566         void call();
 567     }
 568 }