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.api.Device;
  20 import org.asamk.signal.manager.api.TypingAction;
  21 import org.asamk.signal.manager.config.ServiceConfig;
  22 import org.asamk.signal.manager.config.ServiceEnvironment;
  23 import org.asamk.signal.manager.config.ServiceEnvironmentConfig;
  24 import org.asamk.signal.manager.groups.GroupId;
  25 import org.asamk.signal.manager.groups.GroupIdV1;
  26 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  27 import org.asamk.signal.manager.groups.GroupLinkState;
  28 import org.asamk.signal.manager.groups.GroupNotFoundException;
  29 import org.asamk.signal.manager.groups.GroupPermission;
  30 import org.asamk.signal.manager.groups.GroupUtils;
  31 import org.asamk.signal.manager.groups.LastGroupAdminException;
  32 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  33 import org.asamk.signal.manager.helper.GroupV2Helper;
  34 import org.asamk.signal.manager.helper.PinHelper;
  35 import org.asamk.signal.manager.helper.ProfileHelper;
  36 import org.asamk.signal.manager.helper.SendHelper;
  37 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  38 import org.asamk.signal.manager.jobs.Context;
  39 import org.asamk.signal.manager.jobs.Job;
  40 import org.asamk.signal.manager.jobs.RetrieveStickerPackJob;
  41 import org.asamk.signal.manager.storage.SignalAccount;
  42 import org.asamk.signal.manager.storage.groups.GroupInfo;
  43 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  44 import org.asamk.signal.manager.storage.groups.GroupInfoV2;
  45 import org.asamk.signal.manager.storage.identities.IdentityInfo;
  46 import org.asamk.signal.manager.storage.messageCache.CachedMessage;
  47 import org.asamk.signal.manager.storage.recipients.Contact;
  48 import org.asamk.signal.manager.storage.recipients.Profile;
  49 import org.asamk.signal.manager.storage.recipients.RecipientId;
  50 import org.asamk.signal.manager.storage.stickers.Sticker;
  51 import org.asamk.signal.manager.storage.stickers.StickerPackId;
  52 import org.asamk.signal.manager.util.AttachmentUtils;
  53 import org.asamk.signal.manager.util.IOUtils;
  54 import org.asamk.signal.manager.util.KeyUtils;
  55 import org.asamk.signal.manager.util.ProfileUtils;
  56 import org.asamk.signal.manager.util.StickerUtils;
  57 import org.asamk.signal.manager.util.Utils;
  58 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  59 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  60 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  61 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  62 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  63 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  64 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  65 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  66 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  67 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  68 import org.signal.libsignal.metadata.SelfSendException;
  69 import org.signal.storageservice.protos.groups.GroupChange;
  70 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
  71 import org.signal.zkgroup.InvalidInputException;
  72 import org.signal.zkgroup.VerificationFailedException;
  73 import org.signal.zkgroup.groups.GroupMasterKey;
  74 import org.signal.zkgroup.groups.GroupSecretParams;
  75 import org.signal.zkgroup.profiles.ProfileKey;
  76 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  77 import org.slf4j.Logger;
  78 import org.slf4j.LoggerFactory;
  79 import org.whispersystems.libsignal.IdentityKey;
  80 import org.whispersystems.libsignal.IdentityKeyPair;
  81 import org.whispersystems.libsignal.InvalidKeyException;
  82 import org.whispersystems.libsignal.InvalidMessageException;
  83 import org.whispersystems.libsignal.ecc.ECPublicKey;
  84 import org.whispersystems.libsignal.state.PreKeyRecord;
  85 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  86 import org.whispersystems.libsignal.util.Pair;
  87 import org.whispersystems.libsignal.util.guava.Optional;
  88 import org.whispersystems.signalservice.api.InvalidMessageStructureException;
  89 import org.whispersystems.signalservice.api.SignalSessionLock;
  90 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  91 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  92 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  93 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  94 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  95 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  96 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  97 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  98 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  99 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
 100 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
 101 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
 102 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
 103 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
 104 import org.whispersystems.signalservice.api.messages.SignalServiceTypingMessage;
 105 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
 106 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 107 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 108 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 109 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 110 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 111 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 112 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 113 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 114 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 115 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 116 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 117 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 118 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 119 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 120 import org.whispersystems.signalservice.api.push.exceptions.ConflictException;
 121 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 122 import org.whispersystems.signalservice.api.util.DeviceNameUtil;
 123 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 124 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
 125 import org.whispersystems.signalservice.api.util.UuidUtil;
 126 import org.whispersystems.signalservice.api.websocket.WebSocketUnavailableException;
 127 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 128 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 129 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 130 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 131 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 132 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 133 import org.whispersystems.signalservice.internal.util.Hex;
 134 import org.whispersystems.signalservice.internal.util.Util;
 135
 136 import java.io.Closeable;
 137 import java.io.File;
 138 import java.io.FileInputStream;
 139 import java.io.FileOutputStream;
 140 import java.io.IOException;
 141 import java.io.InputStream;
 142 import java.io.OutputStream;
 143 import java.net.URI;
 144 import java.net.URISyntaxException;
 145 import java.net.URLEncoder;
 146 import java.nio.charset.StandardCharsets;
 147 import java.nio.file.Files;
 148 import java.security.SignatureException;
 149 import java.util.ArrayList;
 150 import java.util.Arrays;
 151 import java.util.Base64;
 152 import java.util.Collection;
 153 import java.util.Date;
 154 import java.util.HashSet;
 155 import java.util.List;
 156 import java.util.Map;
 157 import java.util.Set;
 158 import java.util.UUID;
 159 import java.util.concurrent.ExecutorService;
 160 import java.util.concurrent.Executors;
 161 import java.util.concurrent.TimeUnit;
 162 import java.util.concurrent.TimeoutException;
 163 import java.util.concurrent.locks.ReentrantLock;
 164 import java.util.function.Function;
 165 import java.util.stream.Collectors;
 166
 167 import static org.asamk.signal.manager.config.ServiceConfig.capabilities;
 168
 169 public class Manager implements Closeable {
 170
 171     private final static Logger logger = LoggerFactory.getLogger(Manager.class);
 172
 173     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
 174     private final SignalDependencies dependencies;
 175
 176     private SignalAccount account;
 177
 178     private final ExecutorService executor = Executors.newCachedThreadPool();
 179
 180     private final ProfileHelper profileHelper;
 181     private final GroupV2Helper groupV2Helper;
 182     private final PinHelper pinHelper;
 183     private final SendHelper sendHelper;
 184
 185     private final AvatarStore avatarStore;
 186     private final AttachmentStore attachmentStore;
 187     private final StickerPackStore stickerPackStore;
 188     private final SignalSessionLock sessionLock = new SignalSessionLock() {
 189         private final ReentrantLock LEGACY_LOCK = new ReentrantLock();
 190
 191         @Override
 192         public Lock acquire() {
 193             LEGACY_LOCK.lock();
 194             return LEGACY_LOCK::unlock;
 195         }
 196     };
 197
 198     Manager(
 199             SignalAccount account,
 200             PathConfig pathConfig,
 201             ServiceEnvironmentConfig serviceEnvironmentConfig,
 202             String userAgent
 203     ) {
 204         this.account = account;
 205         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 206
 207         final var credentialsProvider = new DynamicCredentialsProvider(account.getUuid(),
 208                 account.getUsername(),
 209                 account.getPassword(),
 210                 account.getDeviceId());
 211         this.dependencies = new SignalDependencies(account.getSelfAddress(),
 212                 serviceEnvironmentConfig,
 213                 userAgent,
 214                 credentialsProvider,
 215                 account.getSignalProtocolStore(),
 216                 executor,
 217                 sessionLock);
 218         this.pinHelper = new PinHelper(dependencies.getKeyBackupService());
 219
 220         final var unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 221                 account.getProfileStore()::getProfileKey,
 222                 this::getRecipientProfile,
 223                 this::getSenderCertificate);
 224         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 225                 unidentifiedAccessHelper::getAccessFor,
 226                 dependencies::getProfileService,
 227                 dependencies::getMessageReceiver,
 228                 this::resolveSignalServiceAddress);
 229         this.groupV2Helper = new GroupV2Helper(this::getRecipientProfileKeyCredential,
 230                 this::getRecipientProfile,
 231                 account::getSelfRecipientId,
 232                 dependencies.getGroupsV2Operations(),
 233                 dependencies.getGroupsV2Api(),
 234                 this::getGroupAuthForToday,
 235                 this::resolveSignalServiceAddress);
 236         this.avatarStore = new AvatarStore(pathConfig.getAvatarsPath());
 237         this.attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
 238         this.stickerPackStore = new StickerPackStore(pathConfig.getStickerPacksPath());
 239         this.sendHelper = new SendHelper(account,
 240                 dependencies,
 241                 unidentifiedAccessHelper,
 242                 this::resolveSignalServiceAddress,
 243                 this::resolveRecipient,
 244                 this::handleIdentityFailure,
 245                 this::getGroup,
 246                 this::refreshRegisteredUser);
 247     }
 248
 249     public String getUsername() {
 250         return account.getUsername();
 251     }
 252
 253     public SignalServiceAddress getSelfAddress() {
 254         return account.getSelfAddress();
 255     }
 256
 257     public RecipientId getSelfRecipientId() {
 258         return account.getSelfRecipientId();
 259     }
 260
 261     private IdentityKeyPair getIdentityKeyPair() {
 262         return account.getIdentityKeyPair();
 263     }
 264
 265     public int getDeviceId() {
 266         return account.getDeviceId();
 267     }
 268
 269     public static Manager init(
 270             String username, File settingsPath, ServiceEnvironment serviceEnvironment, String userAgent
 271     ) throws IOException, NotRegisteredException {
 272         var pathConfig = PathConfig.createDefault(settingsPath);
 273
 274         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 275             throw new NotRegisteredException();
 276         }
 277
 278         var account = SignalAccount.load(pathConfig.getDataPath(), username, true);
 279
 280         if (!account.isRegistered()) {
 281             throw new NotRegisteredException();
 282         }
 283
 284         final var serviceEnvironmentConfig = ServiceConfig.getServiceEnvironmentConfig(serviceEnvironment, userAgent);
 285
 286         return new Manager(account, pathConfig, serviceEnvironmentConfig, userAgent);
 287     }
 288
 289     public static List<String> getAllLocalUsernames(File settingsPath) {
 290         var pathConfig = PathConfig.createDefault(settingsPath);
 291         final var dataPath = pathConfig.getDataPath();
 292         final var files = dataPath.listFiles();
 293
 294         if (files == null) {
 295             return List.of();
 296         }
 297
 298         return Arrays.stream(files)
 299                 .filter(File::isFile)
 300                 .map(File::getName)
 301                 .filter(file -> PhoneNumberFormatter.isValidNumber(file, null))
 302                 .collect(Collectors.toList());
 303     }
 304
 305     public void checkAccountState() throws IOException {
 306         if (account.getLastReceiveTimestamp() == 0) {
 307             logger.warn("The Signal protocol expects that incoming messages are regularly received.");
 308         } else {
 309             var diffInMilliseconds = System.currentTimeMillis() - account.getLastReceiveTimestamp();
 310             long days = TimeUnit.DAYS.convert(diffInMilliseconds, TimeUnit.MILLISECONDS);
 311             if (days > 7) {
 312                 logger.warn(
 313                         "Messages have been last received {} days ago. The Signal protocol expects that incoming messages are regularly received.",
 314                         days);
 315             }
 316         }
 317         if (dependencies.getAccountManager().getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 318             refreshPreKeys();
 319         }
 320         if (account.getUuid() == null) {
 321             account.setUuid(dependencies.getAccountManager().getOwnUuid());
 322         }
 323         updateAccountAttributes();
 324     }
 325
 326     /**
 327      * This is used for checking a set of phone numbers for registration on Signal
 328      *
 329      * @param numbers The set of phone number in question
 330      * @return A map of numbers to booleans. True if registered, false otherwise. Should never be null
 331      * @throws IOException if its unable to get the contacts to check if they're registered
 332      */
 333     public Map<String, Boolean> areUsersRegistered(Set<String> numbers) throws IOException {
 334         // Note "contactDetails" has no optionals. It only gives us info on users who are registered
 335         var contactDetails = getRegisteredUsers(numbers);
 336
 337         var registeredUsers = contactDetails.keySet();
 338
 339         return numbers.stream().collect(Collectors.toMap(x -> x, registeredUsers::contains));
 340     }
 341
 342     public void updateAccountAttributes() throws IOException {
 343         dependencies.getAccountManager()
 344                 .setAccountAttributes(account.getEncryptedDeviceName(),
 345                         null,
 346                         account.getLocalRegistrationId(),
 347                         true,
 348                         // set legacy pin only if no KBS master key is set
 349                         account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
 350                         account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 351                         account.getSelfUnidentifiedAccessKey(),
 352                         account.isUnrestrictedUnidentifiedAccess(),
 353                         capabilities,
 354                         account.isDiscoverableByPhoneNumber());
 355     }
 356
 357     /**
 358      * @param givenName  if null, the previous givenName will be kept
 359      * @param familyName if null, the previous familyName will be kept
 360      * @param about      if null, the previous about text will be kept
 361      * @param aboutEmoji if null, the previous about emoji will be kept
 362      * @param avatar     if avatar is null the image from the local avatar store is used (if present),
 363      */
 364     public void setProfile(
 365             String givenName, final String familyName, String about, String aboutEmoji, Optional<File> avatar
 366     ) throws IOException {
 367         var profile = getRecipientProfile(account.getSelfRecipientId());
 368         var builder = profile == null ? Profile.newBuilder() : Profile.newBuilder(profile);
 369         if (givenName != null) {
 370             builder.withGivenName(givenName);
 371         }
 372         if (familyName != null) {
 373             builder.withFamilyName(familyName);
 374         }
 375         if (about != null) {
 376             builder.withAbout(about);
 377         }
 378         if (aboutEmoji != null) {
 379             builder.withAboutEmoji(aboutEmoji);
 380         }
 381         var newProfile = builder.build();
 382
 383         try (final var streamDetails = avatar == null
 384                 ? avatarStore.retrieveProfileAvatar(getSelfAddress())
 385                 : avatar.isPresent() ? Utils.createStreamDetailsFromFile(avatar.get()) : null) {
 386             dependencies.getAccountManager()
 387                     .setVersionedProfile(account.getUuid(),
 388                             account.getProfileKey(),
 389                             newProfile.getInternalServiceName(),
 390                             newProfile.getAbout() == null ? "" : newProfile.getAbout(),
 391                             newProfile.getAboutEmoji() == null ? "" : newProfile.getAboutEmoji(),
 392                             Optional.absent(),
 393                             streamDetails);
 394         }
 395
 396         if (avatar != null) {
 397             if (avatar.isPresent()) {
 398                 avatarStore.storeProfileAvatar(getSelfAddress(),
 399                         outputStream -> IOUtils.copyFileToStream(avatar.get(), outputStream));
 400             } else {
 401                 avatarStore.deleteProfileAvatar(getSelfAddress());
 402             }
 403         }
 404         account.getProfileStore().storeProfile(account.getSelfRecipientId(), newProfile);
 405
 406         sendHelper.sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
 407     }
 408
 409     public void unregister() throws IOException {
 410         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 411         // If this is the master device, other users can't send messages to this number anymore.
 412         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 413         dependencies.getAccountManager().setGcmId(Optional.absent());
 414
 415         account.setRegistered(false);
 416     }
 417
 418     public void deleteAccount() throws IOException {
 419         dependencies.getAccountManager().deleteAccount();
 420
 421         account.setRegistered(false);
 422     }
 423
 424     public List<Device> getLinkedDevices() throws IOException {
 425         var devices = dependencies.getAccountManager().getDevices();
 426         account.setMultiDevice(devices.size() > 1);
 427         var identityKey = account.getIdentityKeyPair().getPrivateKey();
 428         return devices.stream().map(d -> {
 429             String deviceName = d.getName();
 430             if (deviceName != null) {
 431                 try {
 432                     deviceName = DeviceNameUtil.decryptDeviceName(deviceName, identityKey);
 433                 } catch (IOException e) {
 434                     logger.debug("Failed to decrypt device name, maybe plain text?", e);
 435                 }
 436             }
 437             return new Device(d.getId(), deviceName, d.getCreated(), d.getLastSeen());
 438         }).collect(Collectors.toList());
 439     }
 440
 441     public void removeLinkedDevices(int deviceId) throws IOException {
 442         dependencies.getAccountManager().removeDevice(deviceId);
 443         var devices = dependencies.getAccountManager().getDevices();
 444         account.setMultiDevice(devices.size() > 1);
 445     }
 446
 447     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 448         var info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 449
 450         addDevice(info.deviceIdentifier, info.deviceKey);
 451     }
 452
 453     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 454         var identityKeyPair = getIdentityKeyPair();
 455         var verificationCode = dependencies.getAccountManager().getNewDeviceVerificationCode();
 456
 457         dependencies.getAccountManager()
 458                 .addDevice(deviceIdentifier,
 459                         deviceKey,
 460                         identityKeyPair,
 461                         Optional.of(account.getProfileKey().serialize()),
 462                         verificationCode);
 463         account.setMultiDevice(true);
 464     }
 465
 466     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 467         if (!account.isMasterDevice()) {
 468             throw new RuntimeException("Only master device can set a PIN");
 469         }
 470         if (pin.isPresent()) {
 471             final var masterKey = account.getPinMasterKey() != null
 472                     ? account.getPinMasterKey()
 473                     : KeyUtils.createMasterKey();
 474
 475             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 476
 477             account.setRegistrationLockPin(pin.get(), masterKey);
 478         } else {
 479             // Remove KBS Pin
 480             pinHelper.removeRegistrationLockPin();
 481
 482             account.setRegistrationLockPin(null, null);
 483         }
 484     }
 485
 486     void refreshPreKeys() throws IOException {
 487         var oneTimePreKeys = generatePreKeys();
 488         final var identityKeyPair = getIdentityKeyPair();
 489         var signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 490
 491         dependencies.getAccountManager().setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 492     }
 493
 494     private List<PreKeyRecord> generatePreKeys() {
 495         final var offset = account.getPreKeyIdOffset();
 496
 497         var records = KeyUtils.generatePreKeyRecords(offset, ServiceConfig.PREKEY_BATCH_SIZE);
 498         account.addPreKeys(records);
 499
 500         return records;
 501     }
 502
 503     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 504         final var signedPreKeyId = account.getNextSignedPreKeyId();
 505
 506         var record = KeyUtils.generateSignedPreKeyRecord(identityKeyPair, signedPreKeyId);
 507         account.addSignedPreKey(record);
 508
 509         return record;
 510     }
 511
 512     public Profile getRecipientProfile(
 513             RecipientId recipientId
 514     ) {
 515         return getRecipientProfile(recipientId, false);
 516     }
 517
 518     private final Set<RecipientId> pendingProfileRequest = new HashSet<>();
 519
 520     Profile getRecipientProfile(
 521             RecipientId recipientId, boolean force
 522     ) {
 523         var profile = account.getProfileStore().getProfile(recipientId);
 524
 525         var now = System.currentTimeMillis();
 526         // Profiles are cached for 24h before retrieving them again, unless forced
 527         if (!force && profile != null && now - profile.getLastUpdateTimestamp() < 24 * 60 * 60 * 1000) {
 528             return profile;
 529         }
 530
 531         synchronized (pendingProfileRequest) {
 532             if (pendingProfileRequest.contains(recipientId)) {
 533                 return profile;
 534             }
 535             pendingProfileRequest.add(recipientId);
 536         }
 537         final SignalServiceProfile encryptedProfile;
 538         try {
 539             encryptedProfile = retrieveEncryptedProfile(recipientId);
 540         } finally {
 541             synchronized (pendingProfileRequest) {
 542                 pendingProfileRequest.remove(recipientId);
 543             }
 544         }
 545         if (encryptedProfile == null) {
 546             return null;
 547         }
 548
 549         profile = decryptProfileIfKeyKnown(recipientId, encryptedProfile);
 550         account.getProfileStore().storeProfile(recipientId, profile);
 551
 552         return profile;
 553     }
 554
 555     private Profile decryptProfileIfKeyKnown(
 556             final RecipientId recipientId, final SignalServiceProfile encryptedProfile
 557     ) {
 558         var profileKey = account.getProfileStore().getProfileKey(recipientId);
 559         if (profileKey == null) {
 560             return new Profile(System.currentTimeMillis(),
 561                     null,
 562                     null,
 563                     null,
 564                     null,
 565                     ProfileUtils.getUnidentifiedAccessMode(encryptedProfile, null),
 566                     ProfileUtils.getCapabilities(encryptedProfile));
 567         }
 568
 569         return decryptProfileAndDownloadAvatar(recipientId, profileKey, encryptedProfile);
 570     }
 571
 572     private SignalServiceProfile retrieveEncryptedProfile(RecipientId recipientId) {
 573         try {
 574             return retrieveProfileAndCredential(recipientId, SignalServiceProfile.RequestType.PROFILE).getProfile();
 575         } catch (IOException e) {
 576             logger.warn("Failed to retrieve profile, ignoring: {}", e.getMessage());
 577             return null;
 578         }
 579     }
 580
 581     private ProfileAndCredential retrieveProfileAndCredential(
 582             final RecipientId recipientId, final SignalServiceProfile.RequestType requestType
 583     ) throws IOException {
 584         final var profileAndCredential = profileHelper.retrieveProfileSync(recipientId, requestType);
 585         final var profile = profileAndCredential.getProfile();
 586
 587         try {
 588             var newIdentity = account.getIdentityKeyStore()
 589                     .saveIdentity(recipientId,
 590                             new IdentityKey(Base64.getDecoder().decode(profile.getIdentityKey())),
 591                             new Date());
 592
 593             if (newIdentity) {
 594                 account.getSessionStore().archiveSessions(recipientId);
 595             }
 596         } catch (InvalidKeyException ignored) {
 597             logger.warn("Got invalid identity key in profile for {}",
 598                     resolveSignalServiceAddress(recipientId).getIdentifier());
 599         }
 600         return profileAndCredential;
 601     }
 602
 603     private ProfileKeyCredential getRecipientProfileKeyCredential(RecipientId recipientId) {
 604         var profileKeyCredential = account.getProfileStore().getProfileKeyCredential(recipientId);
 605         if (profileKeyCredential != null) {
 606             return profileKeyCredential;
 607         }
 608
 609         ProfileAndCredential profileAndCredential;
 610         try {
 611             profileAndCredential = retrieveProfileAndCredential(recipientId,
 612                     SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 613         } catch (IOException e) {
 614             logger.warn("Failed to retrieve profile key credential, ignoring: {}", e.getMessage());
 615             return null;
 616         }
 617
 618         profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 619         account.getProfileStore().storeProfileKeyCredential(recipientId, profileKeyCredential);
 620
 621         var profileKey = account.getProfileStore().getProfileKey(recipientId);
 622         if (profileKey != null) {
 623             final var profile = decryptProfileAndDownloadAvatar(recipientId,
 624                     profileKey,
 625                     profileAndCredential.getProfile());
 626             account.getProfileStore().storeProfile(recipientId, profile);
 627         }
 628
 629         return profileKeyCredential;
 630     }
 631
 632     private Profile decryptProfileAndDownloadAvatar(
 633             final RecipientId recipientId, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 634     ) {
 635         if (encryptedProfile.getAvatar() != null) {
 636             downloadProfileAvatar(resolveSignalServiceAddress(recipientId), encryptedProfile.getAvatar(), profileKey);
 637         }
 638
 639         return ProfileUtils.decryptProfile(profileKey, encryptedProfile);
 640     }
 641
 642     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(GroupId groupId) throws IOException {
 643         final var streamDetails = avatarStore.retrieveGroupAvatar(groupId);
 644         if (streamDetails == null) {
 645             return Optional.absent();
 646         }
 647
 648         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 649     }
 650
 651     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(SignalServiceAddress address) throws IOException {
 652         final var streamDetails = avatarStore.retrieveContactAvatar(address);
 653         if (streamDetails == null) {
 654             return Optional.absent();
 655         }
 656
 657         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 658     }
 659
 660     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 661         var g = getGroup(groupId);
 662         if (g == null) {
 663             throw new GroupNotFoundException(groupId);
 664         }
 665         if (!g.isMember(account.getSelfRecipientId()) && !g.isPendingMember(account.getSelfRecipientId())) {
 666             throw new NotAGroupMemberException(groupId, g.getTitle());
 667         }
 668         return g;
 669     }
 670
 671     public List<GroupInfo> getGroups() {
 672         return account.getGroupStore().getGroups();
 673     }
 674
 675     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 676             String messageText, List<String> attachments, GroupId groupId
 677     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 678         final var messageBuilder = createMessageBuilder().withBody(messageText);
 679         if (attachments != null) {
 680             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 681         }
 682
 683         return sendHelper.sendAsGroupMessage(messageBuilder, groupId);
 684     }
 685
 686     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 687             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, GroupId groupId
 688     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 689         var targetAuthorRecipientId = canonicalizeAndResolveRecipient(targetAuthor);
 690         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 691                 remove,
 692                 resolveSignalServiceAddress(targetAuthorRecipientId),
 693                 targetSentTimestamp);
 694         final var messageBuilder = createMessageBuilder().withReaction(reaction);
 695
 696         return sendHelper.sendAsGroupMessage(messageBuilder, groupId);
 697     }
 698
 699     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(
 700             GroupId groupId, Set<String> groupAdmins
 701     ) throws GroupNotFoundException, IOException, NotAGroupMemberException, InvalidNumberException, LastGroupAdminException {
 702         var group = getGroupForUpdating(groupId);
 703         if (group instanceof GroupInfoV1) {
 704             return quitGroupV1((GroupInfoV1) group);
 705         }
 706
 707         final var newAdmins = getRecipientIds(groupAdmins);
 708         try {
 709             return quitGroupV2((GroupInfoV2) group, newAdmins);
 710         } catch (ConflictException e) {
 711             // Detected conflicting update, refreshing group and trying again
 712             group = getGroup(groupId, true);
 713             return quitGroupV2((GroupInfoV2) group, newAdmins);
 714         }
 715     }
 716
 717     private Pair<Long, List<SendMessageResult>> quitGroupV1(final GroupInfoV1 groupInfoV1) throws IOException {
 718         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 719                 .withId(groupInfoV1.getGroupId().serialize())
 720                 .build();
 721
 722         var messageBuilder = createMessageBuilder().asGroupMessage(group);
 723         groupInfoV1.removeMember(account.getSelfRecipientId());
 724         account.getGroupStore().updateGroup(groupInfoV1);
 725         return sendHelper.sendGroupMessage(messageBuilder.build(),
 726                 groupInfoV1.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 727     }
 728
 729     private Pair<Long, List<SendMessageResult>> quitGroupV2(
 730             final GroupInfoV2 groupInfoV2, final Set<RecipientId> newAdmins
 731     ) throws LastGroupAdminException, IOException {
 732         final var currentAdmins = groupInfoV2.getAdminMembers();
 733         newAdmins.removeAll(currentAdmins);
 734         newAdmins.retainAll(groupInfoV2.getMembers());
 735         if (currentAdmins.contains(getSelfRecipientId())
 736                 && currentAdmins.size() == 1
 737                 && groupInfoV2.getMembers().size() > 1
 738                 && newAdmins.size() == 0) {
 739             // Last admin can't leave the group, unless she's also the last member
 740             throw new LastGroupAdminException(groupInfoV2.getGroupId(), groupInfoV2.getTitle());
 741         }
 742         final var groupGroupChangePair = groupV2Helper.leaveGroup(groupInfoV2, newAdmins);
 743         groupInfoV2.setGroup(groupGroupChangePair.first(), this::resolveRecipient);
 744         var messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 745         account.getGroupStore().updateGroup(groupInfoV2);
 746         return sendHelper.sendGroupMessage(messageBuilder.build(),
 747                 groupInfoV2.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 748     }
 749
 750     public void deleteGroup(GroupId groupId) throws IOException {
 751         account.getGroupStore().deleteGroup(groupId);
 752         avatarStore.deleteGroupAvatar(groupId);
 753     }
 754
 755     public Pair<GroupId, List<SendMessageResult>> createGroup(
 756             String name, List<String> members, File avatarFile
 757     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
 758         return createGroup(name, members == null ? null : getRecipientIds(members), avatarFile);
 759     }
 760
 761     private Pair<GroupId, List<SendMessageResult>> createGroup(
 762             String name, Set<RecipientId> members, File avatarFile
 763     ) throws IOException, AttachmentInvalidException {
 764         final var selfRecipientId = account.getSelfRecipientId();
 765         if (members != null && members.contains(selfRecipientId)) {
 766             members = new HashSet<>(members);
 767             members.remove(selfRecipientId);
 768         }
 769
 770         var gv2Pair = groupV2Helper.createGroup(name == null ? "" : name,
 771                 members == null ? Set.of() : members,
 772                 avatarFile);
 773
 774         SignalServiceDataMessage.Builder messageBuilder;
 775         if (gv2Pair == null) {
 776             // Failed to create v2 group, creating v1 group instead
 777             var gv1 = new GroupInfoV1(GroupIdV1.createRandom());
 778             gv1.addMembers(List.of(selfRecipientId));
 779             final var result = updateGroupV1(gv1, name, members, avatarFile);
 780             return new Pair<>(gv1.getGroupId(), result.second());
 781         }
 782
 783         final var gv2 = gv2Pair.first();
 784         final var decryptedGroup = gv2Pair.second();
 785
 786         gv2.setGroup(decryptedGroup, this::resolveRecipient);
 787         if (avatarFile != null) {
 788             avatarStore.storeGroupAvatar(gv2.getGroupId(),
 789                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 790         }
 791         messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 792         account.getGroupStore().updateGroup(gv2);
 793
 794         final var result = sendHelper.sendGroupMessage(messageBuilder.build(),
 795                 gv2.getMembersIncludingPendingWithout(selfRecipientId));
 796         return new Pair<>(gv2.getGroupId(), result.second());
 797     }
 798
 799     public Pair<Long, List<SendMessageResult>> updateGroup(
 800             GroupId groupId,
 801             String name,
 802             String description,
 803             List<String> members,
 804             List<String> removeMembers,
 805             List<String> admins,
 806             List<String> removeAdmins,
 807             boolean resetGroupLink,
 808             GroupLinkState groupLinkState,
 809             GroupPermission addMemberPermission,
 810             GroupPermission editDetailsPermission,
 811             File avatarFile,
 812             Integer expirationTimer,
 813             Boolean isAnnouncementGroup
 814     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 815         return updateGroup(groupId,
 816                 name,
 817                 description,
 818                 members == null ? null : getRecipientIds(members),
 819                 removeMembers == null ? null : getRecipientIds(removeMembers),
 820                 admins == null ? null : getRecipientIds(admins),
 821                 removeAdmins == null ? null : getRecipientIds(removeAdmins),
 822                 resetGroupLink,
 823                 groupLinkState,
 824                 addMemberPermission,
 825                 editDetailsPermission,
 826                 avatarFile,
 827                 expirationTimer,
 828                 isAnnouncementGroup);
 829     }
 830
 831     private Pair<Long, List<SendMessageResult>> updateGroup(
 832             final GroupId groupId,
 833             final String name,
 834             final String description,
 835             final Set<RecipientId> members,
 836             final Set<RecipientId> removeMembers,
 837             final Set<RecipientId> admins,
 838             final Set<RecipientId> removeAdmins,
 839             final boolean resetGroupLink,
 840             final GroupLinkState groupLinkState,
 841             final GroupPermission addMemberPermission,
 842             final GroupPermission editDetailsPermission,
 843             final File avatarFile,
 844             final Integer expirationTimer,
 845             final Boolean isAnnouncementGroup
 846     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 847         var group = getGroupForUpdating(groupId);
 848
 849         if (group instanceof GroupInfoV2) {
 850             try {
 851                 return updateGroupV2((GroupInfoV2) group,
 852                         name,
 853                         description,
 854                         members,
 855                         removeMembers,
 856                         admins,
 857                         removeAdmins,
 858                         resetGroupLink,
 859                         groupLinkState,
 860                         addMemberPermission,
 861                         editDetailsPermission,
 862                         avatarFile,
 863                         expirationTimer,
 864                         isAnnouncementGroup);
 865             } catch (ConflictException e) {
 866                 // Detected conflicting update, refreshing group and trying again
 867                 group = getGroup(groupId, true);
 868                 return updateGroupV2((GroupInfoV2) group,
 869                         name,
 870                         description,
 871                         members,
 872                         removeMembers,
 873                         admins,
 874                         removeAdmins,
 875                         resetGroupLink,
 876                         groupLinkState,
 877                         addMemberPermission,
 878                         editDetailsPermission,
 879                         avatarFile,
 880                         expirationTimer,
 881                         isAnnouncementGroup);
 882             }
 883         }
 884
 885         final var gv1 = (GroupInfoV1) group;
 886         final var result = updateGroupV1(gv1, name, members, avatarFile);
 887         if (expirationTimer != null) {
 888             setExpirationTimer(gv1, expirationTimer);
 889         }
 890         return result;
 891     }
 892
 893     private Pair<Long, List<SendMessageResult>> updateGroupV1(
 894             final GroupInfoV1 gv1, final String name, final Set<RecipientId> members, final File avatarFile
 895     ) throws IOException, AttachmentInvalidException {
 896         updateGroupV1Details(gv1, name, members, avatarFile);
 897         var messageBuilder = getGroupUpdateMessageBuilder(gv1);
 898
 899         account.getGroupStore().updateGroup(gv1);
 900
 901         return sendHelper.sendGroupMessage(messageBuilder.build(),
 902                 gv1.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 903     }
 904
 905     private void updateGroupV1Details(
 906             final GroupInfoV1 g, final String name, final Collection<RecipientId> members, final File avatarFile
 907     ) throws IOException {
 908         if (name != null) {
 909             g.name = name;
 910         }
 911
 912         if (members != null) {
 913             final var newMemberAddresses = members.stream()
 914                     .filter(member -> !g.isMember(member))
 915                     .map(this::resolveSignalServiceAddress)
 916                     .collect(Collectors.toList());
 917             final var newE164Members = new HashSet<String>();
 918             for (var member : newMemberAddresses) {
 919                 if (!member.getNumber().isPresent()) {
 920                     continue;
 921                 }
 922                 newE164Members.add(member.getNumber().get());
 923             }
 924
 925             final var registeredUsers = getRegisteredUsers(newE164Members);
 926             if (registeredUsers.size() != newE164Members.size()) {
 927                 // Some of the new members are not registered on Signal
 928                 newE164Members.removeAll(registeredUsers.keySet());
 929                 throw new IOException("Failed to add members "
 930                         + String.join(", ", newE164Members)
 931                         + " to group: Not registered on Signal");
 932             }
 933
 934             g.addMembers(members);
 935         }
 936
 937         if (avatarFile != null) {
 938             avatarStore.storeGroupAvatar(g.getGroupId(),
 939                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 940         }
 941     }
 942
 943     private Pair<Long, List<SendMessageResult>> updateGroupV2(
 944             final GroupInfoV2 group,
 945             final String name,
 946             final String description,
 947             final Set<RecipientId> members,
 948             final Set<RecipientId> removeMembers,
 949             final Set<RecipientId> admins,
 950             final Set<RecipientId> removeAdmins,
 951             final boolean resetGroupLink,
 952             final GroupLinkState groupLinkState,
 953             final GroupPermission addMemberPermission,
 954             final GroupPermission editDetailsPermission,
 955             final File avatarFile,
 956             final Integer expirationTimer,
 957             final Boolean isAnnouncementGroup
 958     ) throws IOException {
 959         Pair<Long, List<SendMessageResult>> result = null;
 960         if (group.isPendingMember(account.getSelfRecipientId())) {
 961             var groupGroupChangePair = groupV2Helper.acceptInvite(group);
 962             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 963         }
 964
 965         if (members != null) {
 966             final var newMembers = new HashSet<>(members);
 967             newMembers.removeAll(group.getMembers());
 968             if (newMembers.size() > 0) {
 969                 var groupGroupChangePair = groupV2Helper.addMembers(group, newMembers);
 970                 result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 971             }
 972         }
 973
 974         if (removeMembers != null) {
 975             var existingRemoveMembers = new HashSet<>(removeMembers);
 976             existingRemoveMembers.retainAll(group.getMembers());
 977             existingRemoveMembers.remove(getSelfRecipientId());// self can be removed with sendQuitGroupMessage
 978             if (existingRemoveMembers.size() > 0) {
 979                 var groupGroupChangePair = groupV2Helper.removeMembers(group, existingRemoveMembers);
 980                 result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 981             }
 982
 983             var pendingRemoveMembers = new HashSet<>(removeMembers);
 984             pendingRemoveMembers.retainAll(group.getPendingMembers());
 985             if (pendingRemoveMembers.size() > 0) {
 986                 var groupGroupChangePair = groupV2Helper.revokeInvitedMembers(group, pendingRemoveMembers);
 987                 result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 988             }
 989         }
 990
 991         if (admins != null) {
 992             final var newAdmins = new HashSet<>(admins);
 993             newAdmins.retainAll(group.getMembers());
 994             newAdmins.removeAll(group.getAdminMembers());
 995             if (newAdmins.size() > 0) {
 996                 for (var admin : newAdmins) {
 997                     var groupGroupChangePair = groupV2Helper.setMemberAdmin(group, admin, true);
 998                     result = sendUpdateGroupV2Message(group,
 999                             groupGroupChangePair.first(),
1000                             groupGroupChangePair.second());
1001                 }
1002             }
1003         }
1004
1005         if (removeAdmins != null) {
1006             final var existingRemoveAdmins = new HashSet<>(removeAdmins);
1007             existingRemoveAdmins.retainAll(group.getAdminMembers());
1008             if (existingRemoveAdmins.size() > 0) {
1009                 for (var admin : existingRemoveAdmins) {
1010                     var groupGroupChangePair = groupV2Helper.setMemberAdmin(group, admin, false);
1011                     result = sendUpdateGroupV2Message(group,
1012                             groupGroupChangePair.first(),
1013                             groupGroupChangePair.second());
1014                 }
1015             }
1016         }
1017
1018         if (resetGroupLink) {
1019             var groupGroupChangePair = groupV2Helper.resetGroupLinkPassword(group);
1020             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1021         }
1022
1023         if (groupLinkState != null) {
1024             var groupGroupChangePair = groupV2Helper.setGroupLinkState(group, groupLinkState);
1025             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1026         }
1027
1028         if (addMemberPermission != null) {
1029             var groupGroupChangePair = groupV2Helper.setAddMemberPermission(group, addMemberPermission);
1030             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1031         }
1032
1033         if (editDetailsPermission != null) {
1034             var groupGroupChangePair = groupV2Helper.setEditDetailsPermission(group, editDetailsPermission);
1035             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1036         }
1037
1038         if (expirationTimer != null) {
1039             var groupGroupChangePair = groupV2Helper.setMessageExpirationTimer(group, expirationTimer);
1040             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1041         }
1042
1043         if (isAnnouncementGroup != null) {
1044             var groupGroupChangePair = groupV2Helper.setIsAnnouncementGroup(group, isAnnouncementGroup);
1045             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1046         }
1047
1048         if (name != null || description != null || avatarFile != null) {
1049             var groupGroupChangePair = groupV2Helper.updateGroup(group, name, description, avatarFile);
1050             if (avatarFile != null) {
1051                 avatarStore.storeGroupAvatar(group.getGroupId(),
1052                         outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
1053             }
1054             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1055         }
1056
1057         return result;
1058     }
1059
1060     public Pair<GroupId, List<SendMessageResult>> joinGroup(
1061             GroupInviteLinkUrl inviteLinkUrl
1062     ) throws IOException, GroupLinkNotActiveException {
1063         final var groupJoinInfo = groupV2Helper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
1064                 inviteLinkUrl.getPassword());
1065         final var groupChange = groupV2Helper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
1066                 inviteLinkUrl.getPassword(),
1067                 groupJoinInfo);
1068         final var group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
1069                 groupJoinInfo.getRevision() + 1,
1070                 groupChange.toByteArray());
1071
1072         if (group.getGroup() == null) {
1073             // Only requested member, can't send update to group members
1074             return new Pair<>(group.getGroupId(), List.of());
1075         }
1076
1077         final var result = sendUpdateGroupV2Message(group, group.getGroup(), groupChange);
1078
1079         return new Pair<>(group.getGroupId(), result.second());
1080     }
1081
1082     private Pair<Long, List<SendMessageResult>> sendUpdateGroupV2Message(
1083             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
1084     ) throws IOException {
1085         final var selfRecipientId = account.getSelfRecipientId();
1086         final var members = group.getMembersIncludingPendingWithout(selfRecipientId);
1087         group.setGroup(newDecryptedGroup, this::resolveRecipient);
1088         members.addAll(group.getMembersIncludingPendingWithout(selfRecipientId));
1089
1090         final var messageBuilder = getGroupUpdateMessageBuilder(group, groupChange.toByteArray());
1091         account.getGroupStore().updateGroup(group);
1092         return sendHelper.sendGroupMessage(messageBuilder.build(), members);
1093     }
1094
1095     private static int currentTimeDays() {
1096         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
1097     }
1098
1099     private GroupsV2AuthorizationString getGroupAuthForToday(
1100             final GroupSecretParams groupSecretParams
1101     ) throws IOException {
1102         final var today = currentTimeDays();
1103         // Returns credentials for the next 7 days
1104         final var credentials = dependencies.getGroupsV2Api().getCredentials(today);
1105         // TODO cache credentials until they expire
1106         var authCredentialResponse = credentials.get(today);
1107         try {
1108             return dependencies.getGroupsV2Api()
1109                     .getGroupsV2AuthorizationString(account.getUuid(),
1110                             today,
1111                             groupSecretParams,
1112                             authCredentialResponse);
1113         } catch (VerificationFailedException e) {
1114             throw new IOException(e);
1115         }
1116     }
1117
1118     Pair<Long, List<SendMessageResult>> sendGroupInfoMessage(
1119             GroupIdV1 groupId, SignalServiceAddress recipient
1120     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
1121         GroupInfoV1 g;
1122         var group = getGroupForUpdating(groupId);
1123         if (!(group instanceof GroupInfoV1)) {
1124             throw new IOException("Received an invalid group request for a v2 group!");
1125         }
1126         g = (GroupInfoV1) group;
1127
1128         final var recipientId = resolveRecipient(recipient);
1129         if (!g.isMember(recipientId)) {
1130             throw new NotAGroupMemberException(groupId, g.name);
1131         }
1132
1133         var messageBuilder = getGroupUpdateMessageBuilder(g);
1134
1135         // Send group message only to the recipient who requested it
1136         return sendHelper.sendGroupMessage(messageBuilder.build(), Set.of(recipientId));
1137     }
1138
1139     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
1140         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
1141                 .withId(g.getGroupId().serialize())
1142                 .withName(g.name)
1143                 .withMembers(g.getMembers()
1144                         .stream()
1145                         .map(this::resolveSignalServiceAddress)
1146                         .collect(Collectors.toList()));
1147
1148         try {
1149             final var attachment = createGroupAvatarAttachment(g.getGroupId());
1150             if (attachment.isPresent()) {
1151                 group.withAvatar(attachment.get());
1152             }
1153         } catch (IOException e) {
1154             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
1155         }
1156
1157         return createMessageBuilder().asGroupMessage(group.build()).withExpiration(g.getMessageExpirationTime());
1158     }
1159
1160     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
1161         var group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
1162                 .withRevision(g.getGroup().getRevision())
1163                 .withSignedGroupChange(signedGroupChange);
1164         return createMessageBuilder().asGroupMessage(group.build()).withExpiration(g.getMessageExpirationTime());
1165     }
1166
1167     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
1168             GroupIdV1 groupId, SignalServiceAddress recipient
1169     ) throws IOException {
1170         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO).withId(groupId.serialize());
1171
1172         var messageBuilder = createMessageBuilder().asGroupMessage(group.build());
1173
1174         // Send group info request message to the recipient who sent us a message with this groupId
1175         return sendHelper.sendGroupMessage(messageBuilder.build(), Set.of(resolveRecipient(recipient)));
1176     }
1177
1178     void sendReceipt(
1179             SignalServiceAddress remoteAddress, long messageId
1180     ) throws IOException, UntrustedIdentityException {
1181         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
1182                 List.of(messageId),
1183                 System.currentTimeMillis());
1184
1185         sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(remoteAddress));
1186     }
1187
1188     public Pair<Long, List<SendMessageResult>> sendMessage(
1189             String messageText, List<String> attachments, List<String> recipients
1190     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
1191         final var messageBuilder = createMessageBuilder().withBody(messageText);
1192         if (attachments != null) {
1193             var attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
1194
1195             // Upload attachments here, so we only upload once even for multiple recipients
1196             var messageSender = dependencies.getMessageSender();
1197             var attachmentPointers = new ArrayList<SignalServiceAttachment>(attachmentStreams.size());
1198             for (var attachment : attachmentStreams) {
1199                 if (attachment.isStream()) {
1200                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
1201                 } else if (attachment.isPointer()) {
1202                     attachmentPointers.add(attachment.asPointer());
1203                 }
1204             }
1205
1206             messageBuilder.withAttachments(attachmentPointers);
1207         }
1208         return sendHelper.sendMessage(messageBuilder, getRecipientIds(recipients));
1209     }
1210
1211     public Pair<Long, SendMessageResult> sendSelfMessage(
1212             String messageText, List<String> attachments
1213     ) throws IOException, AttachmentInvalidException {
1214         final var messageBuilder = createMessageBuilder().withBody(messageText);
1215         if (attachments != null) {
1216             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
1217         }
1218         return sendHelper.sendSelfMessage(messageBuilder);
1219     }
1220
1221     public Pair<Long, List<SendMessageResult>> sendRemoteDeleteMessage(
1222             long targetSentTimestamp, List<String> recipients
1223     ) throws IOException, InvalidNumberException {
1224         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1225         final var messageBuilder = createMessageBuilder().withRemoteDelete(delete);
1226         return sendHelper.sendMessage(messageBuilder, getRecipientIds(recipients));
1227     }
1228
1229     public Pair<Long, List<SendMessageResult>> sendGroupRemoteDeleteMessage(
1230             long targetSentTimestamp, GroupId groupId
1231     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1232         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1233         final var messageBuilder = createMessageBuilder().withRemoteDelete(delete);
1234         return sendHelper.sendAsGroupMessage(messageBuilder, groupId);
1235     }
1236
1237     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
1238             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
1239     ) throws IOException, InvalidNumberException {
1240         var targetAuthorRecipientId = canonicalizeAndResolveRecipient(targetAuthor);
1241         var reaction = new SignalServiceDataMessage.Reaction(emoji,
1242                 remove,
1243                 resolveSignalServiceAddress(targetAuthorRecipientId),
1244                 targetSentTimestamp);
1245         final var messageBuilder = createMessageBuilder().withReaction(reaction);
1246         return sendHelper.sendMessage(messageBuilder, getRecipientIds(recipients));
1247     }
1248
1249     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1250         var messageBuilder = createMessageBuilder().asEndSessionMessage();
1251
1252         final var recipientIds = getRecipientIds(recipients);
1253         try {
1254             return sendHelper.sendMessage(messageBuilder, recipientIds);
1255         } finally {
1256             for (var recipientId : recipientIds) {
1257                 handleEndSession(recipientId);
1258             }
1259         }
1260     }
1261
1262     void renewSession(RecipientId recipientId) throws IOException {
1263         account.getSessionStore().archiveSessions(recipientId);
1264         if (!recipientId.equals(getSelfRecipientId())) {
1265             sendHelper.sendNullMessage(recipientId);
1266         }
1267     }
1268
1269     public void setContactName(String number, String name) throws InvalidNumberException, NotMasterDeviceException {
1270         if (!account.isMasterDevice()) {
1271             throw new NotMasterDeviceException();
1272         }
1273         final var recipientId = canonicalizeAndResolveRecipient(number);
1274         var contact = account.getContactStore().getContact(recipientId);
1275         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1276         account.getContactStore().storeContact(recipientId, builder.withName(name).build());
1277     }
1278
1279     public void setContactBlocked(
1280             String number, boolean blocked
1281     ) throws InvalidNumberException, NotMasterDeviceException {
1282         if (!account.isMasterDevice()) {
1283             throw new NotMasterDeviceException();
1284         }
1285         setContactBlocked(canonicalizeAndResolveRecipient(number), blocked);
1286     }
1287
1288     private void setContactBlocked(RecipientId recipientId, boolean blocked) {
1289         var contact = account.getContactStore().getContact(recipientId);
1290         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1291         account.getContactStore().storeContact(recipientId, builder.withBlocked(blocked).build());
1292     }
1293
1294     public void setGroupBlocked(final GroupId groupId, final boolean blocked) throws GroupNotFoundException {
1295         var group = getGroup(groupId);
1296         if (group == null) {
1297             throw new GroupNotFoundException(groupId);
1298         }
1299
1300         group.setBlocked(blocked);
1301         account.getGroupStore().updateGroup(group);
1302     }
1303
1304     private void setExpirationTimer(RecipientId recipientId, int messageExpirationTimer) {
1305         var contact = account.getContactStore().getContact(recipientId);
1306         if (contact != null && contact.getMessageExpirationTime() == messageExpirationTimer) {
1307             return;
1308         }
1309         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1310         account.getContactStore()
1311                 .storeContact(recipientId, builder.withMessageExpirationTime(messageExpirationTimer).build());
1312     }
1313
1314     private void sendExpirationTimerUpdate(RecipientId recipientId) throws IOException {
1315         final var messageBuilder = createMessageBuilder().asExpirationUpdate();
1316         sendHelper.sendMessage(messageBuilder, Set.of(recipientId));
1317     }
1318
1319     /**
1320      * Change the expiration timer for a contact
1321      */
1322     public void setExpirationTimer(
1323             String number, int messageExpirationTimer
1324     ) throws IOException, InvalidNumberException {
1325         var recipientId = canonicalizeAndResolveRecipient(number);
1326         setExpirationTimer(recipientId, messageExpirationTimer);
1327         sendExpirationTimerUpdate(recipientId);
1328     }
1329
1330     /**
1331      * Change the expiration timer for a group
1332      */
1333     private void setExpirationTimer(
1334             GroupInfoV1 groupInfoV1, int messageExpirationTimer
1335     ) throws NotAGroupMemberException, GroupNotFoundException, IOException {
1336         groupInfoV1.messageExpirationTime = messageExpirationTimer;
1337         account.getGroupStore().updateGroup(groupInfoV1);
1338         sendExpirationTimerUpdate(groupInfoV1.getGroupId());
1339     }
1340
1341     private void sendExpirationTimerUpdate(GroupIdV1 groupId) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1342         final var messageBuilder = createMessageBuilder().asExpirationUpdate();
1343         sendHelper.sendAsGroupMessage(messageBuilder, groupId);
1344     }
1345
1346     /**
1347      * Upload the sticker pack from path.
1348      *
1349      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1350      * @return if successful, returns the URL to install the sticker pack in the signal app
1351      */
1352     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1353         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
1354
1355         var messageSender = dependencies.getMessageSender();
1356
1357         var packKey = KeyUtils.createStickerUploadKey();
1358         var packIdString = messageSender.uploadStickerManifest(manifest, packKey);
1359         var packId = StickerPackId.deserialize(Hex.fromStringCondensed(packIdString));
1360
1361         var sticker = new Sticker(packId, packKey);
1362         account.getStickerStore().updateSticker(sticker);
1363
1364         try {
1365             return new URI("https",
1366                     "signal.art",
1367                     "/addstickers/",
1368                     "pack_id="
1369                             + URLEncoder.encode(Hex.toStringCondensed(packId.serialize()), StandardCharsets.UTF_8)
1370                             + "&pack_key="
1371                             + URLEncoder.encode(Hex.toStringCondensed(packKey), StandardCharsets.UTF_8)).toString();
1372         } catch (URISyntaxException e) {
1373             throw new AssertionError(e);
1374         }
1375     }
1376
1377     public void requestAllSyncData() throws IOException {
1378         requestSyncGroups();
1379         requestSyncContacts();
1380         requestSyncBlocked();
1381         requestSyncConfiguration();
1382         requestSyncKeys();
1383     }
1384
1385     private void requestSyncGroups() throws IOException {
1386         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1387                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1388                 .build();
1389         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1390         sendHelper.sendSyncMessage(message);
1391     }
1392
1393     private void requestSyncContacts() throws IOException {
1394         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1395                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1396                 .build();
1397         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1398         sendHelper.sendSyncMessage(message);
1399     }
1400
1401     private void requestSyncBlocked() throws IOException {
1402         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1403                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1404                 .build();
1405         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1406         sendHelper.sendSyncMessage(message);
1407     }
1408
1409     private void requestSyncConfiguration() throws IOException {
1410         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1411                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1412                 .build();
1413         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1414         sendHelper.sendSyncMessage(message);
1415     }
1416
1417     private void requestSyncKeys() throws IOException {
1418         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1419                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
1420                 .build();
1421         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1422         sendHelper.sendSyncMessage(message);
1423     }
1424
1425     private byte[] getSenderCertificate() {
1426         byte[] certificate;
1427         try {
1428             if (account.isPhoneNumberShared()) {
1429                 certificate = dependencies.getAccountManager().getSenderCertificate();
1430             } else {
1431                 certificate = dependencies.getAccountManager().getSenderCertificateForPhoneNumberPrivacy();
1432             }
1433         } catch (IOException e) {
1434             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1435             return null;
1436         }
1437         // TODO cache for a day
1438         return certificate;
1439     }
1440
1441     private Set<RecipientId> getRecipientIds(Collection<String> numbers) throws InvalidNumberException {
1442         final var signalServiceAddresses = new HashSet<SignalServiceAddress>(numbers.size());
1443         final var addressesMissingUuid = new HashSet<SignalServiceAddress>();
1444
1445         for (var number : numbers) {
1446             final var resolvedAddress = resolveSignalServiceAddress(canonicalizeAndResolveRecipient(number));
1447             if (resolvedAddress.getUuid().isPresent()) {
1448                 signalServiceAddresses.add(resolvedAddress);
1449             } else {
1450                 addressesMissingUuid.add(resolvedAddress);
1451             }
1452         }
1453
1454         final var numbersMissingUuid = addressesMissingUuid.stream()
1455                 .map(a -> a.getNumber().get())
1456                 .collect(Collectors.toSet());
1457         Map<String, UUID> registeredUsers;
1458         try {
1459             registeredUsers = getRegisteredUsers(numbersMissingUuid);
1460         } catch (IOException e) {
1461             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1462             registeredUsers = Map.of();
1463         }
1464
1465         for (var address : addressesMissingUuid) {
1466             final var number = address.getNumber().get();
1467             if (registeredUsers.containsKey(number)) {
1468                 final var newAddress = resolveSignalServiceAddress(resolveRecipientTrusted(new SignalServiceAddress(
1469                         registeredUsers.get(number),
1470                         number)));
1471                 signalServiceAddresses.add(newAddress);
1472             } else {
1473                 signalServiceAddresses.add(address);
1474             }
1475         }
1476
1477         return signalServiceAddresses.stream().map(this::resolveRecipient).collect(Collectors.toSet());
1478     }
1479
1480     private RecipientId refreshRegisteredUser(RecipientId recipientId) throws IOException {
1481         final var address = resolveSignalServiceAddress(recipientId);
1482         if (!address.getNumber().isPresent()) {
1483             return recipientId;
1484         }
1485         final var number = address.getNumber().get();
1486         final var uuidMap = getRegisteredUsers(Set.of(number));
1487         return resolveRecipientTrusted(new SignalServiceAddress(uuidMap.getOrDefault(number, null), number));
1488     }
1489
1490     private Map<String, UUID> getRegisteredUsers(final Set<String> numbers) throws IOException {
1491         try {
1492             return dependencies.getAccountManager()
1493                     .getRegisteredUsers(ServiceConfig.getIasKeyStore(),
1494                             numbers,
1495                             serviceEnvironmentConfig.getCdsMrenclave());
1496         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
1497             throw new IOException(e);
1498         }
1499     }
1500
1501     public void sendTypingMessage(
1502             TypingAction action, Set<String> recipients
1503     ) throws IOException, UntrustedIdentityException, InvalidNumberException {
1504         final var timestamp = System.currentTimeMillis();
1505         var message = new SignalServiceTypingMessage(action.toSignalService(), timestamp, Optional.absent());
1506         sendHelper.sendTypingMessage(message, getRecipientIds(recipients));
1507     }
1508
1509     public void sendGroupTypingMessage(
1510             TypingAction action, GroupId groupId
1511     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1512         final var timestamp = System.currentTimeMillis();
1513         final var message = new SignalServiceTypingMessage(action.toSignalService(),
1514                 timestamp,
1515                 Optional.of(groupId.serialize()));
1516         sendHelper.sendGroupTypingMessage(message, groupId);
1517     }
1518
1519     private SignalServiceDataMessage.Builder createMessageBuilder() {
1520         final var timestamp = System.currentTimeMillis();
1521
1522         var messageBuilder = SignalServiceDataMessage.newBuilder();
1523         messageBuilder.withTimestamp(timestamp);
1524         return messageBuilder;
1525     }
1526
1527     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, ProtocolUntrustedIdentityException, InvalidMessageStructureException {
1528         return dependencies.getCipher().decrypt(envelope);
1529     }
1530
1531     private void handleEndSession(RecipientId recipientId) {
1532         account.getSessionStore().deleteAllSessions(recipientId);
1533     }
1534
1535     private List<HandleAction> handleSignalServiceDataMessage(
1536             SignalServiceDataMessage message,
1537             boolean isSync,
1538             SignalServiceAddress source,
1539             SignalServiceAddress destination,
1540             boolean ignoreAttachments
1541     ) {
1542         var actions = new ArrayList<HandleAction>();
1543         if (message.getGroupContext().isPresent()) {
1544             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1545                 var groupInfo = message.getGroupContext().get().getGroupV1().get();
1546                 var groupId = GroupId.v1(groupInfo.getGroupId());
1547                 var group = getGroup(groupId);
1548                 if (group == null || group instanceof GroupInfoV1) {
1549                     var groupV1 = (GroupInfoV1) group;
1550                     switch (groupInfo.getType()) {
1551                         case UPDATE: {
1552                             if (groupV1 == null) {
1553                                 groupV1 = new GroupInfoV1(groupId);
1554                             }
1555
1556                             if (groupInfo.getAvatar().isPresent()) {
1557                                 var avatar = groupInfo.getAvatar().get();
1558                                 downloadGroupAvatar(avatar, groupV1.getGroupId());
1559                             }
1560
1561                             if (groupInfo.getName().isPresent()) {
1562                                 groupV1.name = groupInfo.getName().get();
1563                             }
1564
1565                             if (groupInfo.getMembers().isPresent()) {
1566                                 groupV1.addMembers(groupInfo.getMembers()
1567                                         .get()
1568                                         .stream()
1569                                         .map(this::resolveRecipient)
1570                                         .collect(Collectors.toSet()));
1571                             }
1572
1573                             account.getGroupStore().updateGroup(groupV1);
1574                             break;
1575                         }
1576                         case DELIVER:
1577                             if (groupV1 == null && !isSync) {
1578                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1579                             }
1580                             break;
1581                         case QUIT: {
1582                             if (groupV1 != null) {
1583                                 groupV1.removeMember(resolveRecipient(source));
1584                                 account.getGroupStore().updateGroup(groupV1);
1585                             }
1586                             break;
1587                         }
1588                         case REQUEST_INFO:
1589                             if (groupV1 != null && !isSync) {
1590                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
1591                             }
1592                             break;
1593                     }
1594                 } else {
1595                     // Received a group v1 message for a v2 group
1596                 }
1597             }
1598             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1599                 final var groupContext = message.getGroupContext().get().getGroupV2().get();
1600                 final var groupMasterKey = groupContext.getMasterKey();
1601
1602                 getOrMigrateGroup(groupMasterKey,
1603                         groupContext.getRevision(),
1604                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1605             }
1606         }
1607
1608         final var conversationPartnerAddress = isSync ? destination : source;
1609         if (conversationPartnerAddress != null && message.isEndSession()) {
1610             handleEndSession(resolveRecipient(conversationPartnerAddress));
1611         }
1612         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1613             if (message.getGroupContext().isPresent()) {
1614                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1615                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1616                     var group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1617                     if (group != null) {
1618                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1619                             group.messageExpirationTime = message.getExpiresInSeconds();
1620                             account.getGroupStore().updateGroup(group);
1621                         }
1622                     }
1623                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1624                     // disappearing message timer already stored in the DecryptedGroup
1625                 }
1626             } else if (conversationPartnerAddress != null) {
1627                 setExpirationTimer(resolveRecipient(conversationPartnerAddress), message.getExpiresInSeconds());
1628             }
1629         }
1630         if (!ignoreAttachments) {
1631             if (message.getAttachments().isPresent()) {
1632                 for (var attachment : message.getAttachments().get()) {
1633                     downloadAttachment(attachment);
1634                 }
1635             }
1636             if (message.getSharedContacts().isPresent()) {
1637                 for (var contact : message.getSharedContacts().get()) {
1638                     if (contact.getAvatar().isPresent()) {
1639                         downloadAttachment(contact.getAvatar().get().getAttachment());
1640                     }
1641                 }
1642             }
1643         }
1644         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1645             final ProfileKey profileKey;
1646             try {
1647                 profileKey = new ProfileKey(message.getProfileKey().get());
1648             } catch (InvalidInputException e) {
1649                 throw new AssertionError(e);
1650             }
1651             if (source.matches(account.getSelfAddress())) {
1652                 this.account.setProfileKey(profileKey);
1653             }
1654             this.account.getProfileStore().storeProfileKey(resolveRecipient(source), profileKey);
1655         }
1656         if (message.getPreviews().isPresent()) {
1657             final var previews = message.getPreviews().get();
1658             for (var preview : previews) {
1659                 if (preview.getImage().isPresent()) {
1660                     downloadAttachment(preview.getImage().get());
1661                 }
1662             }
1663         }
1664         if (message.getQuote().isPresent()) {
1665             final var quote = message.getQuote().get();
1666
1667             for (var quotedAttachment : quote.getAttachments()) {
1668                 final var thumbnail = quotedAttachment.getThumbnail();
1669                 if (thumbnail != null) {
1670                     downloadAttachment(thumbnail);
1671                 }
1672             }
1673         }
1674         if (message.getSticker().isPresent()) {
1675             final var messageSticker = message.getSticker().get();
1676             final var stickerPackId = StickerPackId.deserialize(messageSticker.getPackId());
1677             var sticker = account.getStickerStore().getSticker(stickerPackId);
1678             if (sticker == null) {
1679                 sticker = new Sticker(stickerPackId, messageSticker.getPackKey());
1680                 account.getStickerStore().updateSticker(sticker);
1681             }
1682             enqueueJob(new RetrieveStickerPackJob(stickerPackId, messageSticker.getPackKey()));
1683         }
1684         return actions;
1685     }
1686
1687     private GroupInfoV2 getOrMigrateGroup(
1688             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1689     ) {
1690         final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1691
1692         var groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1693         var groupInfo = getGroup(groupId);
1694         final GroupInfoV2 groupInfoV2;
1695         if (groupInfo instanceof GroupInfoV1) {
1696             // Received a v2 group message for a v1 group, we need to locally migrate the group
1697             account.getGroupStore().deleteGroupV1(((GroupInfoV1) groupInfo).getGroupId());
1698             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1699             logger.info("Locally migrated group {} to group v2, id: {}",
1700                     groupInfo.getGroupId().toBase64(),
1701                     groupInfoV2.getGroupId().toBase64());
1702         } else if (groupInfo instanceof GroupInfoV2) {
1703             groupInfoV2 = (GroupInfoV2) groupInfo;
1704         } else {
1705             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1706         }
1707
1708         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1709             DecryptedGroup group = null;
1710             if (signedGroupChange != null
1711                     && groupInfoV2.getGroup() != null
1712                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1713                 group = groupV2Helper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(),
1714                         signedGroupChange,
1715                         groupMasterKey);
1716             }
1717             if (group == null) {
1718                 group = groupV2Helper.getDecryptedGroup(groupSecretParams);
1719             }
1720             if (group != null) {
1721                 storeProfileKeysFromMembers(group);
1722                 final var avatar = group.getAvatar();
1723                 if (avatar != null && !avatar.isEmpty()) {
1724                     downloadGroupAvatar(groupId, groupSecretParams, avatar);
1725                 }
1726             }
1727             groupInfoV2.setGroup(group, this::resolveRecipient);
1728             account.getGroupStore().updateGroup(groupInfoV2);
1729         }
1730
1731         return groupInfoV2;
1732     }
1733
1734     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1735         for (var member : group.getMembersList()) {
1736             final var uuid = UuidUtil.parseOrThrow(member.getUuid().toByteArray());
1737             final var recipientId = account.getRecipientStore().resolveRecipient(uuid);
1738             try {
1739                 account.getProfileStore()
1740                         .storeProfileKey(recipientId, new ProfileKey(member.getProfileKey().toByteArray()));
1741             } catch (InvalidInputException ignored) {
1742             }
1743         }
1744     }
1745
1746     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1747         Set<HandleAction> queuedActions = new HashSet<>();
1748         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
1749             var actions = retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
1750             if (actions != null) {
1751                 queuedActions.addAll(actions);
1752             }
1753         }
1754         for (var action : queuedActions) {
1755             try {
1756                 action.execute(this);
1757             } catch (Throwable e) {
1758                 if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
1759                     Thread.currentThread().interrupt();
1760                 }
1761                 logger.warn("Message action failed.", e);
1762             }
1763         }
1764     }
1765
1766     private List<HandleAction> retryFailedReceivedMessage(
1767             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
1768     ) {
1769         var envelope = cachedMessage.loadEnvelope();
1770         if (envelope == null) {
1771             return null;
1772         }
1773         SignalServiceContent content = null;
1774         List<HandleAction> actions = null;
1775         if (!envelope.isReceipt()) {
1776             try {
1777                 content = decryptMessage(envelope);
1778             } catch (ProtocolUntrustedIdentityException e) {
1779                 if (!envelope.hasSource()) {
1780                     final var identifier = e.getSender();
1781                     final var recipientId = resolveRecipient(identifier);
1782                     try {
1783                         account.getMessageCache().replaceSender(cachedMessage, recipientId);
1784                     } catch (IOException ioException) {
1785                         logger.warn("Failed to move cached message to recipient folder: {}", ioException.getMessage());
1786                     }
1787                 }
1788                 return null;
1789             } catch (Exception er) {
1790                 // All other errors are not recoverable, so delete the cached message
1791                 cachedMessage.delete();
1792                 return null;
1793             }
1794             actions = handleMessage(envelope, content, ignoreAttachments);
1795         }
1796         handler.handleMessage(envelope, content, null);
1797         cachedMessage.delete();
1798         return actions;
1799     }
1800
1801     public void receiveMessages(
1802             long timeout,
1803             TimeUnit unit,
1804             boolean returnOnTimeout,
1805             boolean ignoreAttachments,
1806             ReceiveMessageHandler handler
1807     ) throws IOException, InterruptedException {
1808         retryFailedReceivedMessages(handler, ignoreAttachments);
1809
1810         Set<HandleAction> queuedActions = null;
1811
1812         final var signalWebSocket = dependencies.getSignalWebSocket();
1813         signalWebSocket.connect();
1814
1815         var hasCaughtUpWithOldMessages = false;
1816
1817         while (!Thread.interrupted()) {
1818             SignalServiceEnvelope envelope;
1819             SignalServiceContent content = null;
1820             Exception exception = null;
1821             final CachedMessage[] cachedMessage = {null};
1822             account.setLastReceiveTimestamp(System.currentTimeMillis());
1823             logger.debug("Checking for new message from server");
1824             try {
1825                 var result = signalWebSocket.readOrEmpty(unit.toMillis(timeout), envelope1 -> {
1826                     final var recipientId = envelope1.hasSource()
1827                             ? resolveRecipient(envelope1.getSourceIdentifier())
1828                             : null;
1829                     // store message on disk, before acknowledging receipt to the server
1830                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1, recipientId);
1831                 });
1832                 logger.debug("New message received from server");
1833                 if (result.isPresent()) {
1834                     envelope = result.get();
1835                 } else {
1836                     // Received indicator that server queue is empty
1837                     hasCaughtUpWithOldMessages = true;
1838
1839                     if (queuedActions != null) {
1840                         for (var action : queuedActions) {
1841                             try {
1842                                 action.execute(this);
1843                             } catch (Throwable e) {
1844                                 if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
1845                                     Thread.currentThread().interrupt();
1846                                 }
1847                                 logger.warn("Message action failed.", e);
1848                             }
1849                         }
1850                         queuedActions.clear();
1851                         queuedActions = null;
1852                     }
1853
1854                     // Continue to wait another timeout for new messages
1855                     continue;
1856                 }
1857             } catch (AssertionError e) {
1858                 if (e.getCause() instanceof InterruptedException) {
1859                     throw (InterruptedException) e.getCause();
1860                 } else {
1861                     throw e;
1862                 }
1863             } catch (WebSocketUnavailableException e) {
1864                 logger.debug("Pipe unexpectedly unavailable, connecting");
1865                 signalWebSocket.connect();
1866                 continue;
1867             } catch (TimeoutException e) {
1868                 if (returnOnTimeout) return;
1869                 continue;
1870             }
1871
1872             if (envelope.hasSource()) {
1873                 // Store uuid if we don't have it already
1874                 // address/uuid in envelope is sent by server
1875                 resolveRecipientTrusted(envelope.getSourceAddress());
1876             }
1877             if (!envelope.isReceipt()) {
1878                 try {
1879                     content = decryptMessage(envelope);
1880                 } catch (Exception e) {
1881                     exception = e;
1882                 }
1883                 if (!envelope.hasSource() && content != null) {
1884                     // Store uuid if we don't have it already
1885                     // address/uuid is validated by unidentified sender certificate
1886                     resolveRecipientTrusted(content.getSender());
1887                 }
1888                 var actions = handleMessage(envelope, content, ignoreAttachments);
1889                 if (exception instanceof ProtocolInvalidMessageException) {
1890                     final var sender = resolveRecipient(((ProtocolInvalidMessageException) exception).getSender());
1891                     logger.debug("Received invalid message, queuing renew session action.");
1892                     actions.add(new RenewSessionAction(sender));
1893                 }
1894                 if (hasCaughtUpWithOldMessages) {
1895                     for (var action : actions) {
1896                         try {
1897                             action.execute(this);
1898                         } catch (Throwable e) {
1899                             if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
1900                                 Thread.currentThread().interrupt();
1901                             }
1902                             logger.warn("Message action failed.", e);
1903                         }
1904                     }
1905                 } else {
1906                     if (queuedActions == null) {
1907                         queuedActions = new HashSet<>();
1908                     }
1909                     queuedActions.addAll(actions);
1910                 }
1911             }
1912             final var notAllowedToSendToGroup = isNotAllowedToSendToGroup(envelope, content);
1913             if (isMessageBlocked(envelope, content)) {
1914                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
1915             } else if (notAllowedToSendToGroup) {
1916                 logger.info("Ignoring a group message from an unauthorized sender (no member or admin): {} {}",
1917                         (envelope.hasSource() ? envelope.getSourceAddress() : content.getSender()).getIdentifier(),
1918                         envelope.getTimestamp());
1919             } else {
1920                 handler.handleMessage(envelope, content, exception);
1921             }
1922             if (cachedMessage[0] != null) {
1923                 if (exception instanceof ProtocolUntrustedIdentityException) {
1924                     final var identifier = ((ProtocolUntrustedIdentityException) exception).getSender();
1925                     final var recipientId = resolveRecipient(identifier);
1926                     queuedActions.add(new RetrieveProfileAction(recipientId));
1927                     if (!envelope.hasSource()) {
1928                         try {
1929                             cachedMessage[0] = account.getMessageCache().replaceSender(cachedMessage[0], recipientId);
1930                         } catch (IOException ioException) {
1931                             logger.warn("Failed to move cached message to recipient folder: {}",
1932                                     ioException.getMessage());
1933                         }
1934                     }
1935                 } else {
1936                     cachedMessage[0].delete();
1937                 }
1938             }
1939         }
1940     }
1941
1942     private boolean isMessageBlocked(
1943             SignalServiceEnvelope envelope, SignalServiceContent content
1944     ) {
1945         SignalServiceAddress source;
1946         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1947             source = envelope.getSourceAddress();
1948         } else if (content != null) {
1949             source = content.getSender();
1950         } else {
1951             return false;
1952         }
1953         final var recipientId = resolveRecipient(source);
1954         if (isContactBlocked(recipientId)) {
1955             return true;
1956         }
1957
1958         if (content != null && content.getDataMessage().isPresent()) {
1959             var message = content.getDataMessage().get();
1960             if (message.getGroupContext().isPresent()) {
1961                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1962                 var group = getGroup(groupId);
1963                 if (group != null && group.isBlocked()) {
1964                     return true;
1965                 }
1966             }
1967         }
1968         return false;
1969     }
1970
1971     public boolean isContactBlocked(final String identifier) throws InvalidNumberException {
1972         final var recipientId = canonicalizeAndResolveRecipient(identifier);
1973         return isContactBlocked(recipientId);
1974     }
1975
1976     private boolean isContactBlocked(final RecipientId recipientId) {
1977         var sourceContact = account.getContactStore().getContact(recipientId);
1978         return sourceContact != null && sourceContact.isBlocked();
1979     }
1980
1981     private boolean isNotAllowedToSendToGroup(
1982             SignalServiceEnvelope envelope, SignalServiceContent content
1983     ) {
1984         SignalServiceAddress source;
1985         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1986             source = envelope.getSourceAddress();
1987         } else if (content != null) {
1988             source = content.getSender();
1989         } else {
1990             return false;
1991         }
1992
1993         if (content == null || !content.getDataMessage().isPresent()) {
1994             return false;
1995         }
1996
1997         var message = content.getDataMessage().get();
1998         if (!message.getGroupContext().isPresent()) {
1999             return false;
2000         }
2001
2002         if (message.getGroupContext().get().getGroupV1().isPresent()) {
2003             var groupInfo = message.getGroupContext().get().getGroupV1().get();
2004             if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
2005                 return false;
2006             }
2007         }
2008
2009         var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
2010         var group = getGroup(groupId);
2011         if (group == null) {
2012             return false;
2013         }
2014
2015         final var recipientId = resolveRecipient(source);
2016         return !group.isMember(recipientId) || (
2017                 group.isAnnouncementGroup() && !group.isAdmin(recipientId)
2018         );
2019     }
2020
2021     private List<HandleAction> handleMessage(
2022             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
2023     ) {
2024         var actions = new ArrayList<HandleAction>();
2025         if (content != null) {
2026             final SignalServiceAddress sender;
2027             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
2028                 sender = envelope.getSourceAddress();
2029             } else {
2030                 sender = content.getSender();
2031             }
2032
2033             if (content.getDataMessage().isPresent()) {
2034                 var message = content.getDataMessage().get();
2035
2036                 if (content.isNeedsReceipt()) {
2037                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
2038                 }
2039
2040                 actions.addAll(handleSignalServiceDataMessage(message,
2041                         false,
2042                         sender,
2043                         account.getSelfAddress(),
2044                         ignoreAttachments));
2045             }
2046             if (content.getSyncMessage().isPresent()) {
2047                 account.setMultiDevice(true);
2048                 var syncMessage = content.getSyncMessage().get();
2049                 if (syncMessage.getSent().isPresent()) {
2050                     var message = syncMessage.getSent().get();
2051                     final var destination = message.getDestination().orNull();
2052                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
2053                             true,
2054                             sender,
2055                             destination,
2056                             ignoreAttachments));
2057                 }
2058                 if (syncMessage.getRequest().isPresent() && account.isMasterDevice()) {
2059                     var rm = syncMessage.getRequest().get();
2060                     if (rm.isContactsRequest()) {
2061                         actions.add(SendSyncContactsAction.create());
2062                     }
2063                     if (rm.isGroupsRequest()) {
2064                         actions.add(SendSyncGroupsAction.create());
2065                     }
2066                     if (rm.isBlockedListRequest()) {
2067                         actions.add(SendSyncBlockedListAction.create());
2068                     }
2069                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
2070                 }
2071                 if (syncMessage.getGroups().isPresent()) {
2072                     File tmpFile = null;
2073                     try {
2074                         tmpFile = IOUtils.createTempFile();
2075                         final var groupsMessage = syncMessage.getGroups().get();
2076                         try (var attachmentAsStream = retrieveAttachmentAsStream(groupsMessage.asPointer(), tmpFile)) {
2077                             var s = new DeviceGroupsInputStream(attachmentAsStream);
2078                             DeviceGroup g;
2079                             while (true) {
2080                                 try {
2081                                     g = s.read();
2082                                 } catch (IOException e) {
2083                                     logger.warn("Sync groups contained invalid group, ignoring: {}", e.getMessage());
2084                                     continue;
2085                                 }
2086                                 if (g == null) {
2087                                     break;
2088                                 }
2089                                 var syncGroup = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(g.getId()));
2090                                 if (syncGroup != null) {
2091                                     if (g.getName().isPresent()) {
2092                                         syncGroup.name = g.getName().get();
2093                                     }
2094                                     syncGroup.addMembers(g.getMembers()
2095                                             .stream()
2096                                             .map(this::resolveRecipient)
2097                                             .collect(Collectors.toSet()));
2098                                     if (!g.isActive()) {
2099                                         syncGroup.removeMember(account.getSelfRecipientId());
2100                                     } else {
2101                                         // Add ourself to the member set as it's marked as active
2102                                         syncGroup.addMembers(List.of(account.getSelfRecipientId()));
2103                                     }
2104                                     syncGroup.blocked = g.isBlocked();
2105                                     if (g.getColor().isPresent()) {
2106                                         syncGroup.color = g.getColor().get();
2107                                     }
2108
2109                                     if (g.getAvatar().isPresent()) {
2110                                         downloadGroupAvatar(g.getAvatar().get(), syncGroup.getGroupId());
2111                                     }
2112                                     syncGroup.archived = g.isArchived();
2113                                     account.getGroupStore().updateGroup(syncGroup);
2114                                 }
2115                             }
2116                         }
2117                     } catch (Exception e) {
2118                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
2119                                 tmpFile,
2120                                 e.getMessage());
2121                     } finally {
2122                         if (tmpFile != null) {
2123                             try {
2124                                 Files.delete(tmpFile.toPath());
2125                             } catch (IOException e) {
2126                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
2127                                         tmpFile,
2128                                         e.getMessage());
2129                             }
2130                         }
2131                     }
2132                 }
2133                 if (syncMessage.getBlockedList().isPresent()) {
2134                     final var blockedListMessage = syncMessage.getBlockedList().get();
2135                     for (var address : blockedListMessage.getAddresses()) {
2136                         setContactBlocked(resolveRecipient(address), true);
2137                     }
2138                     for (var groupId : blockedListMessage.getGroupIds()
2139                             .stream()
2140                             .map(GroupId::unknownVersion)
2141                             .collect(Collectors.toSet())) {
2142                         try {
2143                             setGroupBlocked(groupId, true);
2144                         } catch (GroupNotFoundException e) {
2145                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
2146                                     groupId.toBase64());
2147                         }
2148                     }
2149                 }
2150                 if (syncMessage.getContacts().isPresent()) {
2151                     File tmpFile = null;
2152                     try {
2153                         tmpFile = IOUtils.createTempFile();
2154                         final var contactsMessage = syncMessage.getContacts().get();
2155                         try (var attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
2156                                 .asPointer(), tmpFile)) {
2157                             var s = new DeviceContactsInputStream(attachmentAsStream);
2158                             DeviceContact c;
2159                             while (true) {
2160                                 try {
2161                                     c = s.read();
2162                                 } catch (IOException e) {
2163                                     logger.warn("Sync contacts contained invalid contact, ignoring: {}",
2164                                             e.getMessage());
2165                                     continue;
2166                                 }
2167                                 if (c == null) {
2168                                     break;
2169                                 }
2170                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
2171                                     account.setProfileKey(c.getProfileKey().get());
2172                                 }
2173                                 final var recipientId = resolveRecipientTrusted(c.getAddress());
2174                                 var contact = account.getContactStore().getContact(recipientId);
2175                                 final var builder = contact == null
2176                                         ? Contact.newBuilder()
2177                                         : Contact.newBuilder(contact);
2178                                 if (c.getName().isPresent()) {
2179                                     builder.withName(c.getName().get());
2180                                 }
2181                                 if (c.getColor().isPresent()) {
2182                                     builder.withColor(c.getColor().get());
2183                                 }
2184                                 if (c.getProfileKey().isPresent()) {
2185                                     account.getProfileStore().storeProfileKey(recipientId, c.getProfileKey().get());
2186                                 }
2187                                 if (c.getVerified().isPresent()) {
2188                                     final var verifiedMessage = c.getVerified().get();
2189                                     account.getIdentityKeyStore()
2190                                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2191                                                     verifiedMessage.getIdentityKey(),
2192                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2193                                 }
2194                                 if (c.getExpirationTimer().isPresent()) {
2195                                     builder.withMessageExpirationTime(c.getExpirationTimer().get());
2196                                 }
2197                                 builder.withBlocked(c.isBlocked());
2198                                 builder.withArchived(c.isArchived());
2199                                 account.getContactStore().storeContact(recipientId, builder.build());
2200
2201                                 if (c.getAvatar().isPresent()) {
2202                                     downloadContactAvatar(c.getAvatar().get(), c.getAddress());
2203                                 }
2204                             }
2205                         }
2206                     } catch (Exception e) {
2207                         logger.warn("Failed to handle received sync contacts “{}”, ignoring: {}",
2208                                 tmpFile,
2209                                 e.getMessage());
2210                     } finally {
2211                         if (tmpFile != null) {
2212                             try {
2213                                 Files.delete(tmpFile.toPath());
2214                             } catch (IOException e) {
2215                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2216                                         tmpFile,
2217                                         e.getMessage());
2218                             }
2219                         }
2220                     }
2221                 }
2222                 if (syncMessage.getVerified().isPresent()) {
2223                     final var verifiedMessage = syncMessage.getVerified().get();
2224                     account.getIdentityKeyStore()
2225                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2226                                     verifiedMessage.getIdentityKey(),
2227                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2228                 }
2229                 if (syncMessage.getStickerPackOperations().isPresent()) {
2230                     final var stickerPackOperationMessages = syncMessage.getStickerPackOperations().get();
2231                     for (var m : stickerPackOperationMessages) {
2232                         if (!m.getPackId().isPresent()) {
2233                             continue;
2234                         }
2235                         final var stickerPackId = StickerPackId.deserialize(m.getPackId().get());
2236                         final var installed = !m.getType().isPresent()
2237                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL;
2238
2239                         var sticker = account.getStickerStore().getSticker(stickerPackId);
2240                         if (m.getPackKey().isPresent()) {
2241                             if (sticker == null) {
2242                                 sticker = new Sticker(stickerPackId, m.getPackKey().get());
2243                             }
2244                             if (installed) {
2245                                 enqueueJob(new RetrieveStickerPackJob(stickerPackId, m.getPackKey().get()));
2246                             }
2247                         }
2248
2249                         if (sticker != null) {
2250                             sticker.setInstalled(installed);
2251                             account.getStickerStore().updateSticker(sticker);
2252                         }
2253                     }
2254                 }
2255                 if (syncMessage.getFetchType().isPresent()) {
2256                     switch (syncMessage.getFetchType().get()) {
2257                         case LOCAL_PROFILE:
2258                             getRecipientProfile(account.getSelfRecipientId(), true);
2259                         case STORAGE_MANIFEST:
2260                             // TODO
2261                     }
2262                 }
2263                 if (syncMessage.getKeys().isPresent()) {
2264                     final var keysMessage = syncMessage.getKeys().get();
2265                     if (keysMessage.getStorageService().isPresent()) {
2266                         final var storageKey = keysMessage.getStorageService().get();
2267                         account.setStorageKey(storageKey);
2268                     }
2269                 }
2270                 if (syncMessage.getConfiguration().isPresent()) {
2271                     // TODO
2272                 }
2273             }
2274         }
2275         return actions;
2276     }
2277
2278     private void downloadContactAvatar(SignalServiceAttachment avatar, SignalServiceAddress address) {
2279         try {
2280             avatarStore.storeContactAvatar(address, outputStream -> retrieveAttachment(avatar, outputStream));
2281         } catch (IOException e) {
2282             logger.warn("Failed to download avatar for contact {}, ignoring: {}", address, e.getMessage());
2283         }
2284     }
2285
2286     private void downloadGroupAvatar(SignalServiceAttachment avatar, GroupId groupId) {
2287         try {
2288             avatarStore.storeGroupAvatar(groupId, outputStream -> retrieveAttachment(avatar, outputStream));
2289         } catch (IOException e) {
2290             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2291         }
2292     }
2293
2294     private void downloadGroupAvatar(GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey) {
2295         try {
2296             avatarStore.storeGroupAvatar(groupId,
2297                     outputStream -> retrieveGroupV2Avatar(groupSecretParams, cdnKey, outputStream));
2298         } catch (IOException e) {
2299             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2300         }
2301     }
2302
2303     private void downloadProfileAvatar(
2304             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2305     ) {
2306         try {
2307             avatarStore.storeProfileAvatar(address,
2308                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
2309         } catch (Throwable e) {
2310             if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
2311                 Thread.currentThread().interrupt();
2312             }
2313             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
2314         }
2315     }
2316
2317     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2318         return attachmentStore.getAttachmentFile(attachmentId);
2319     }
2320
2321     private void downloadAttachment(final SignalServiceAttachment attachment) {
2322         if (!attachment.isPointer()) {
2323             logger.warn("Invalid state, can't store an attachment stream.");
2324         }
2325
2326         var pointer = attachment.asPointer();
2327         if (pointer.getPreview().isPresent()) {
2328             final var preview = pointer.getPreview().get();
2329             try {
2330                 attachmentStore.storeAttachmentPreview(pointer.getRemoteId(),
2331                         outputStream -> outputStream.write(preview, 0, preview.length));
2332             } catch (IOException e) {
2333                 logger.warn("Failed to download attachment preview, ignoring: {}", e.getMessage());
2334             }
2335         }
2336
2337         try {
2338             attachmentStore.storeAttachment(pointer.getRemoteId(),
2339                     outputStream -> retrieveAttachmentPointer(pointer, outputStream));
2340         } catch (IOException e) {
2341             logger.warn("Failed to download attachment ({}), ignoring: {}", pointer.getRemoteId(), e.getMessage());
2342         }
2343     }
2344
2345     private void retrieveGroupV2Avatar(
2346             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
2347     ) throws IOException {
2348         var groupOperations = dependencies.getGroupsV2Operations().forGroup(groupSecretParams);
2349
2350         var tmpFile = IOUtils.createTempFile();
2351         try (InputStream input = dependencies.getMessageReceiver()
2352                 .retrieveGroupsV2ProfileAvatar(cdnKey, tmpFile, ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2353             var encryptedData = IOUtils.readFully(input);
2354
2355             var decryptedData = groupOperations.decryptAvatar(encryptedData);
2356             outputStream.write(decryptedData);
2357         } finally {
2358             try {
2359                 Files.delete(tmpFile.toPath());
2360             } catch (IOException e) {
2361                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2362                         tmpFile,
2363                         e.getMessage());
2364             }
2365         }
2366     }
2367
2368     private void retrieveProfileAvatar(
2369             String avatarPath, ProfileKey profileKey, OutputStream outputStream
2370     ) throws IOException {
2371         var tmpFile = IOUtils.createTempFile();
2372         try (var input = dependencies.getMessageReceiver()
2373                 .retrieveProfileAvatar(avatarPath,
2374                         tmpFile,
2375                         profileKey,
2376                         ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2377             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2378             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2379         } finally {
2380             try {
2381                 Files.delete(tmpFile.toPath());
2382             } catch (IOException e) {
2383                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2384                         tmpFile,
2385                         e.getMessage());
2386             }
2387         }
2388     }
2389
2390     private void retrieveAttachment(
2391             final SignalServiceAttachment attachment, final OutputStream outputStream
2392     ) throws IOException {
2393         if (attachment.isPointer()) {
2394             var pointer = attachment.asPointer();
2395             retrieveAttachmentPointer(pointer, outputStream);
2396         } else {
2397             var stream = attachment.asStream();
2398             IOUtils.copyStream(stream.getInputStream(), outputStream);
2399         }
2400     }
2401
2402     private void retrieveAttachmentPointer(
2403             SignalServiceAttachmentPointer pointer, OutputStream outputStream
2404     ) throws IOException {
2405         var tmpFile = IOUtils.createTempFile();
2406         try (var input = retrieveAttachmentAsStream(pointer, tmpFile)) {
2407             IOUtils.copyStream(input, outputStream);
2408         } catch (MissingConfigurationException | InvalidMessageException e) {
2409             throw new IOException(e);
2410         } finally {
2411             try {
2412                 Files.delete(tmpFile.toPath());
2413             } catch (IOException e) {
2414                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2415                         tmpFile,
2416                         e.getMessage());
2417             }
2418         }
2419     }
2420
2421     private InputStream retrieveAttachmentAsStream(
2422             SignalServiceAttachmentPointer pointer, File tmpFile
2423     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2424         return dependencies.getMessageReceiver()
2425                 .retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2426     }
2427
2428     void sendGroups() throws IOException {
2429         var groupsFile = IOUtils.createTempFile();
2430
2431         try {
2432             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2433                 var out = new DeviceGroupsOutputStream(fos);
2434                 for (var record : getGroups()) {
2435                     if (record instanceof GroupInfoV1) {
2436                         var groupInfo = (GroupInfoV1) record;
2437                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2438                                 Optional.fromNullable(groupInfo.name),
2439                                 groupInfo.getMembers()
2440                                         .stream()
2441                                         .map(this::resolveSignalServiceAddress)
2442                                         .collect(Collectors.toList()),
2443                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2444                                 groupInfo.isMember(account.getSelfRecipientId()),
2445                                 Optional.of(groupInfo.messageExpirationTime),
2446                                 Optional.fromNullable(groupInfo.color),
2447                                 groupInfo.blocked,
2448                                 Optional.absent(),
2449                                 groupInfo.archived));
2450                     }
2451                 }
2452             }
2453
2454             if (groupsFile.exists() && groupsFile.length() > 0) {
2455                 try (var groupsFileStream = new FileInputStream(groupsFile)) {
2456                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2457                             .withStream(groupsFileStream)
2458                             .withContentType("application/octet-stream")
2459                             .withLength(groupsFile.length())
2460                             .build();
2461
2462                     sendHelper.sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2463                 }
2464             }
2465         } finally {
2466             try {
2467                 Files.delete(groupsFile.toPath());
2468             } catch (IOException e) {
2469                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2470             }
2471         }
2472     }
2473
2474     public void sendContacts() throws IOException {
2475         var contactsFile = IOUtils.createTempFile();
2476
2477         try {
2478             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2479                 var out = new DeviceContactsOutputStream(fos);
2480                 for (var contactPair : account.getContactStore().getContacts()) {
2481                     final var recipientId = contactPair.first();
2482                     final var contact = contactPair.second();
2483                     final var address = resolveSignalServiceAddress(recipientId);
2484
2485                     var currentIdentity = account.getIdentityKeyStore().getIdentity(recipientId);
2486                     VerifiedMessage verifiedMessage = null;
2487                     if (currentIdentity != null) {
2488                         verifiedMessage = new VerifiedMessage(address,
2489                                 currentIdentity.getIdentityKey(),
2490                                 currentIdentity.getTrustLevel().toVerifiedState(),
2491                                 currentIdentity.getDateAdded().getTime());
2492                     }
2493
2494                     var profileKey = account.getProfileStore().getProfileKey(recipientId);
2495                     out.write(new DeviceContact(address,
2496                             Optional.fromNullable(contact.getName()),
2497                             createContactAvatarAttachment(address),
2498                             Optional.fromNullable(contact.getColor()),
2499                             Optional.fromNullable(verifiedMessage),
2500                             Optional.fromNullable(profileKey),
2501                             contact.isBlocked(),
2502                             Optional.of(contact.getMessageExpirationTime()),
2503                             Optional.absent(),
2504                             contact.isArchived()));
2505                 }
2506
2507                 if (account.getProfileKey() != null) {
2508                     // Send our own profile key as well
2509                     out.write(new DeviceContact(account.getSelfAddress(),
2510                             Optional.absent(),
2511                             Optional.absent(),
2512                             Optional.absent(),
2513                             Optional.absent(),
2514                             Optional.of(account.getProfileKey()),
2515                             false,
2516                             Optional.absent(),
2517                             Optional.absent(),
2518                             false));
2519                 }
2520             }
2521
2522             if (contactsFile.exists() && contactsFile.length() > 0) {
2523                 try (var contactsFileStream = new FileInputStream(contactsFile)) {
2524                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2525                             .withStream(contactsFileStream)
2526                             .withContentType("application/octet-stream")
2527                             .withLength(contactsFile.length())
2528                             .build();
2529
2530                     sendHelper.sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream,
2531                             true)));
2532                 }
2533             }
2534         } finally {
2535             try {
2536                 Files.delete(contactsFile.toPath());
2537             } catch (IOException e) {
2538                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2539             }
2540         }
2541     }
2542
2543     void sendBlockedList() throws IOException {
2544         var addresses = new ArrayList<SignalServiceAddress>();
2545         for (var record : account.getContactStore().getContacts()) {
2546             if (record.second().isBlocked()) {
2547                 addresses.add(resolveSignalServiceAddress(record.first()));
2548             }
2549         }
2550         var groupIds = new ArrayList<byte[]>();
2551         for (var record : getGroups()) {
2552             if (record.isBlocked()) {
2553                 groupIds.add(record.getGroupId().serialize());
2554             }
2555         }
2556         sendHelper.sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2557     }
2558
2559     private void sendVerifiedMessage(
2560             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2561     ) throws IOException {
2562         var verifiedMessage = new VerifiedMessage(destination,
2563                 identityKey,
2564                 trustLevel.toVerifiedState(),
2565                 System.currentTimeMillis());
2566         sendHelper.sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2567     }
2568
2569     public List<Pair<RecipientId, Contact>> getContacts() {
2570         return account.getContactStore().getContacts();
2571     }
2572
2573     public String getContactOrProfileName(String number) throws InvalidNumberException {
2574         final var recipientId = canonicalizeAndResolveRecipient(number);
2575         final var recipient = account.getRecipientStore().getRecipient(recipientId);
2576         if (recipient == null) {
2577             return null;
2578         }
2579
2580         if (recipient.getContact() != null && !Util.isEmpty(recipient.getContact().getName())) {
2581             return recipient.getContact().getName();
2582         }
2583
2584         if (recipient.getProfile() != null && recipient.getProfile() != null) {
2585             return recipient.getProfile().getDisplayName();
2586         }
2587
2588         return null;
2589     }
2590
2591     public GroupInfo getGroup(GroupId groupId) {
2592         return getGroup(groupId, false);
2593     }
2594
2595     public GroupInfo getGroup(GroupId groupId, boolean forceUpdate) {
2596         final var group = account.getGroupStore().getGroup(groupId);
2597         if (group instanceof GroupInfoV2 && (forceUpdate || ((GroupInfoV2) group).getGroup() == null)) {
2598             final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(((GroupInfoV2) group).getMasterKey());
2599             ((GroupInfoV2) group).setGroup(groupV2Helper.getDecryptedGroup(groupSecretParams), this::resolveRecipient);
2600             account.getGroupStore().updateGroup(group);
2601         }
2602         return group;
2603     }
2604
2605     public List<IdentityInfo> getIdentities() {
2606         return account.getIdentityKeyStore().getIdentities();
2607     }
2608
2609     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2610         final var identity = account.getIdentityKeyStore().getIdentity(canonicalizeAndResolveRecipient(number));
2611         return identity == null ? List.of() : List.of(identity);
2612     }
2613
2614     /**
2615      * Trust this the identity with this fingerprint
2616      *
2617      * @param name        username of the identity
2618      * @param fingerprint Fingerprint
2619      */
2620     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2621         var recipientId = canonicalizeAndResolveRecipient(name);
2622         return trustIdentity(recipientId,
2623                 identityKey -> Arrays.equals(identityKey.serialize(), fingerprint),
2624                 TrustLevel.TRUSTED_VERIFIED);
2625     }
2626
2627     /**
2628      * Trust this the identity with this safety number
2629      *
2630      * @param name         username of the identity
2631      * @param safetyNumber Safety number
2632      */
2633     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2634         var recipientId = canonicalizeAndResolveRecipient(name);
2635         var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2636         return trustIdentity(recipientId,
2637                 identityKey -> safetyNumber.equals(computeSafetyNumber(address, identityKey)),
2638                 TrustLevel.TRUSTED_VERIFIED);
2639     }
2640
2641     /**
2642      * Trust all keys of this identity without verification
2643      *
2644      * @param name username of the identity
2645      */
2646     public boolean trustIdentityAllKeys(String name) throws InvalidNumberException {
2647         var recipientId = canonicalizeAndResolveRecipient(name);
2648         return trustIdentity(recipientId, identityKey -> true, TrustLevel.TRUSTED_UNVERIFIED);
2649     }
2650
2651     private boolean trustIdentity(
2652             RecipientId recipientId, Function<IdentityKey, Boolean> verifier, TrustLevel trustLevel
2653     ) {
2654         var identity = account.getIdentityKeyStore().getIdentity(recipientId);
2655         if (identity == null) {
2656             return false;
2657         }
2658
2659         if (!verifier.apply(identity.getIdentityKey())) {
2660             return false;
2661         }
2662
2663         account.getIdentityKeyStore().setIdentityTrustLevel(recipientId, identity.getIdentityKey(), trustLevel);
2664         try {
2665             var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2666             sendVerifiedMessage(address, identity.getIdentityKey(), trustLevel);
2667         } catch (IOException e) {
2668             logger.warn("Failed to send verification sync message: {}", e.getMessage());
2669         }
2670
2671         return true;
2672     }
2673
2674     private void handleIdentityFailure(
2675             final RecipientId recipientId, final SendMessageResult.IdentityFailure identityFailure
2676     ) {
2677         final var identityKey = identityFailure.getIdentityKey();
2678         if (identityKey != null) {
2679             final var newIdentity = account.getIdentityKeyStore().saveIdentity(recipientId, identityKey, new Date());
2680             if (newIdentity) {
2681                 account.getSessionStore().archiveSessions(recipientId);
2682             }
2683         } else {
2684             // Retrieve profile to get the current identity key from the server
2685             retrieveEncryptedProfile(recipientId);
2686         }
2687     }
2688
2689     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
2690         final var fingerprint = Utils.computeSafetyNumber(capabilities.isUuid(),
2691                 account.getSelfAddress(),
2692                 getIdentityKeyPair().getPublicKey(),
2693                 theirAddress,
2694                 theirIdentityKey);
2695         return fingerprint == null ? null : fingerprint.getDisplayableFingerprint().getDisplayText();
2696     }
2697
2698     public byte[] computeSafetyNumberForScanning(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
2699         final var fingerprint = Utils.computeSafetyNumber(capabilities.isUuid(),
2700                 account.getSelfAddress(),
2701                 getIdentityKeyPair().getPublicKey(),
2702                 theirAddress,
2703                 theirIdentityKey);
2704         return fingerprint == null ? null : fingerprint.getScannableFingerprint().getSerialized();
2705     }
2706
2707     @Deprecated
2708     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2709         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2710
2711         return resolveSignalServiceAddress(address);
2712     }
2713
2714     @Deprecated
2715     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2716         if (address.matches(account.getSelfAddress())) {
2717             return account.getSelfAddress();
2718         }
2719
2720         return account.getRecipientStore().resolveServiceAddress(address);
2721     }
2722
2723     public SignalServiceAddress resolveSignalServiceAddress(RecipientId recipientId) {
2724         return account.getRecipientStore().resolveServiceAddress(recipientId);
2725     }
2726
2727     public RecipientId canonicalizeAndResolveRecipient(String identifier) throws InvalidNumberException {
2728         var canonicalizedNumber = UuidUtil.isUuid(identifier)
2729                 ? identifier
2730                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2731
2732         return resolveRecipient(canonicalizedNumber);
2733     }
2734
2735     private RecipientId resolveRecipient(final String identifier) {
2736         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2737
2738         return resolveRecipient(address);
2739     }
2740
2741     public RecipientId resolveRecipient(SignalServiceAddress address) {
2742         return account.getRecipientStore().resolveRecipient(address);
2743     }
2744
2745     private RecipientId resolveRecipientTrusted(SignalServiceAddress address) {
2746         return account.getRecipientStore().resolveRecipientTrusted(address);
2747     }
2748
2749     private void enqueueJob(Job job) {
2750         var context = new Context(account,
2751                 dependencies.getAccountManager(),
2752                 dependencies.getMessageReceiver(),
2753                 stickerPackStore);
2754         job.run(context);
2755     }
2756
2757     @Override
2758     public void close() throws IOException {
2759         close(true);
2760     }
2761
2762     void close(boolean closeAccount) throws IOException {
2763         executor.shutdown();
2764
2765         dependencies.getSignalWebSocket().disconnect();
2766
2767         if (closeAccount && account != null) {
2768             account.close();
2769         }
2770         account = null;
2771     }
2772
2773     public interface ReceiveMessageHandler {
2774
2775         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2776     }
2777 }