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     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 814         return updateGroup(groupId,
 815                 name,
 816                 description,
 817                 members == null ? null : getRecipientIds(members),
 818                 removeMembers == null ? null : getRecipientIds(removeMembers),
 819                 admins == null ? null : getRecipientIds(admins),
 820                 removeAdmins == null ? null : getRecipientIds(removeAdmins),
 821                 resetGroupLink,
 822                 groupLinkState,
 823                 addMemberPermission,
 824                 editDetailsPermission,
 825                 avatarFile,
 826                 expirationTimer);
 827     }
 828
 829     private Pair<Long, List<SendMessageResult>> updateGroup(
 830             final GroupId groupId,
 831             final String name,
 832             final String description,
 833             final Set<RecipientId> members,
 834             final Set<RecipientId> removeMembers,
 835             final Set<RecipientId> admins,
 836             final Set<RecipientId> removeAdmins,
 837             final boolean resetGroupLink,
 838             final GroupLinkState groupLinkState,
 839             final GroupPermission addMemberPermission,
 840             final GroupPermission editDetailsPermission,
 841             final File avatarFile,
 842             final Integer expirationTimer
 843     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 844         var group = getGroupForUpdating(groupId);
 845
 846         if (group instanceof GroupInfoV2) {
 847             try {
 848                 return updateGroupV2((GroupInfoV2) group,
 849                         name,
 850                         description,
 851                         members,
 852                         removeMembers,
 853                         admins,
 854                         removeAdmins,
 855                         resetGroupLink,
 856                         groupLinkState,
 857                         addMemberPermission,
 858                         editDetailsPermission,
 859                         avatarFile,
 860                         expirationTimer);
 861             } catch (ConflictException e) {
 862                 // Detected conflicting update, refreshing group and trying again
 863                 group = getGroup(groupId, true);
 864                 return updateGroupV2((GroupInfoV2) group,
 865                         name,
 866                         description,
 867                         members,
 868                         removeMembers,
 869                         admins,
 870                         removeAdmins,
 871                         resetGroupLink,
 872                         groupLinkState,
 873                         addMemberPermission,
 874                         editDetailsPermission,
 875                         avatarFile,
 876                         expirationTimer);
 877             }
 878         }
 879
 880         final var gv1 = (GroupInfoV1) group;
 881         final var result = updateGroupV1(gv1, name, members, avatarFile);
 882         if (expirationTimer != null) {
 883             setExpirationTimer(gv1, expirationTimer);
 884         }
 885         return result;
 886     }
 887
 888     private Pair<Long, List<SendMessageResult>> updateGroupV1(
 889             final GroupInfoV1 gv1, final String name, final Set<RecipientId> members, final File avatarFile
 890     ) throws IOException, AttachmentInvalidException {
 891         updateGroupV1Details(gv1, name, members, avatarFile);
 892         var messageBuilder = getGroupUpdateMessageBuilder(gv1);
 893
 894         account.getGroupStore().updateGroup(gv1);
 895
 896         return sendHelper.sendGroupMessage(messageBuilder.build(),
 897                 gv1.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 898     }
 899
 900     private void updateGroupV1Details(
 901             final GroupInfoV1 g, final String name, final Collection<RecipientId> members, final File avatarFile
 902     ) throws IOException {
 903         if (name != null) {
 904             g.name = name;
 905         }
 906
 907         if (members != null) {
 908             final var newMemberAddresses = members.stream()
 909                     .filter(member -> !g.isMember(member))
 910                     .map(this::resolveSignalServiceAddress)
 911                     .collect(Collectors.toList());
 912             final var newE164Members = new HashSet<String>();
 913             for (var member : newMemberAddresses) {
 914                 if (!member.getNumber().isPresent()) {
 915                     continue;
 916                 }
 917                 newE164Members.add(member.getNumber().get());
 918             }
 919
 920             final var registeredUsers = getRegisteredUsers(newE164Members);
 921             if (registeredUsers.size() != newE164Members.size()) {
 922                 // Some of the new members are not registered on Signal
 923                 newE164Members.removeAll(registeredUsers.keySet());
 924                 throw new IOException("Failed to add members "
 925                         + String.join(", ", newE164Members)
 926                         + " to group: Not registered on Signal");
 927             }
 928
 929             g.addMembers(members);
 930         }
 931
 932         if (avatarFile != null) {
 933             avatarStore.storeGroupAvatar(g.getGroupId(),
 934                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 935         }
 936     }
 937
 938     private Pair<Long, List<SendMessageResult>> updateGroupV2(
 939             final GroupInfoV2 group,
 940             final String name,
 941             final String description,
 942             final Set<RecipientId> members,
 943             final Set<RecipientId> removeMembers,
 944             final Set<RecipientId> admins,
 945             final Set<RecipientId> removeAdmins,
 946             final boolean resetGroupLink,
 947             final GroupLinkState groupLinkState,
 948             final GroupPermission addMemberPermission,
 949             final GroupPermission editDetailsPermission,
 950             final File avatarFile,
 951             Integer expirationTimer
 952     ) throws IOException {
 953         Pair<Long, List<SendMessageResult>> result = null;
 954         if (group.isPendingMember(account.getSelfRecipientId())) {
 955             var groupGroupChangePair = groupV2Helper.acceptInvite(group);
 956             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 957         }
 958
 959         if (members != null) {
 960             final var newMembers = new HashSet<>(members);
 961             newMembers.removeAll(group.getMembers());
 962             if (newMembers.size() > 0) {
 963                 var groupGroupChangePair = groupV2Helper.addMembers(group, newMembers);
 964                 result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 965             }
 966         }
 967
 968         if (removeMembers != null) {
 969             var existingRemoveMembers = new HashSet<>(removeMembers);
 970             existingRemoveMembers.retainAll(group.getMembers());
 971             existingRemoveMembers.remove(getSelfRecipientId());// self can be removed with sendQuitGroupMessage
 972             if (existingRemoveMembers.size() > 0) {
 973                 var groupGroupChangePair = groupV2Helper.removeMembers(group, existingRemoveMembers);
 974                 result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 975             }
 976
 977             var pendingRemoveMembers = new HashSet<>(removeMembers);
 978             pendingRemoveMembers.retainAll(group.getPendingMembers());
 979             if (pendingRemoveMembers.size() > 0) {
 980                 var groupGroupChangePair = groupV2Helper.revokeInvitedMembers(group, pendingRemoveMembers);
 981                 result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 982             }
 983         }
 984
 985         if (admins != null) {
 986             final var newAdmins = new HashSet<>(admins);
 987             newAdmins.retainAll(group.getMembers());
 988             newAdmins.removeAll(group.getAdminMembers());
 989             if (newAdmins.size() > 0) {
 990                 for (var admin : newAdmins) {
 991                     var groupGroupChangePair = groupV2Helper.setMemberAdmin(group, admin, true);
 992                     result = sendUpdateGroupV2Message(group,
 993                             groupGroupChangePair.first(),
 994                             groupGroupChangePair.second());
 995                 }
 996             }
 997         }
 998
 999         if (removeAdmins != null) {
1000             final var existingRemoveAdmins = new HashSet<>(removeAdmins);
1001             existingRemoveAdmins.retainAll(group.getAdminMembers());
1002             if (existingRemoveAdmins.size() > 0) {
1003                 for (var admin : existingRemoveAdmins) {
1004                     var groupGroupChangePair = groupV2Helper.setMemberAdmin(group, admin, false);
1005                     result = sendUpdateGroupV2Message(group,
1006                             groupGroupChangePair.first(),
1007                             groupGroupChangePair.second());
1008                 }
1009             }
1010         }
1011
1012         if (resetGroupLink) {
1013             var groupGroupChangePair = groupV2Helper.resetGroupLinkPassword(group);
1014             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1015         }
1016
1017         if (groupLinkState != null) {
1018             var groupGroupChangePair = groupV2Helper.setGroupLinkState(group, groupLinkState);
1019             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1020         }
1021
1022         if (addMemberPermission != null) {
1023             var groupGroupChangePair = groupV2Helper.setAddMemberPermission(group, addMemberPermission);
1024             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1025         }
1026
1027         if (editDetailsPermission != null) {
1028             var groupGroupChangePair = groupV2Helper.setEditDetailsPermission(group, editDetailsPermission);
1029             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1030         }
1031
1032         if (expirationTimer != null) {
1033             var groupGroupChangePair = groupV2Helper.setMessageExpirationTimer(group, expirationTimer);
1034             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1035         }
1036
1037         if (name != null || description != null || avatarFile != null) {
1038             var groupGroupChangePair = groupV2Helper.updateGroup(group, name, description, avatarFile);
1039             if (avatarFile != null) {
1040                 avatarStore.storeGroupAvatar(group.getGroupId(),
1041                         outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
1042             }
1043             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1044         }
1045
1046         return result;
1047     }
1048
1049     public Pair<GroupId, List<SendMessageResult>> joinGroup(
1050             GroupInviteLinkUrl inviteLinkUrl
1051     ) throws IOException, GroupLinkNotActiveException {
1052         final var groupJoinInfo = groupV2Helper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
1053                 inviteLinkUrl.getPassword());
1054         final var groupChange = groupV2Helper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
1055                 inviteLinkUrl.getPassword(),
1056                 groupJoinInfo);
1057         final var group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
1058                 groupJoinInfo.getRevision() + 1,
1059                 groupChange.toByteArray());
1060
1061         if (group.getGroup() == null) {
1062             // Only requested member, can't send update to group members
1063             return new Pair<>(group.getGroupId(), List.of());
1064         }
1065
1066         final var result = sendUpdateGroupV2Message(group, group.getGroup(), groupChange);
1067
1068         return new Pair<>(group.getGroupId(), result.second());
1069     }
1070
1071     private Pair<Long, List<SendMessageResult>> sendUpdateGroupV2Message(
1072             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
1073     ) throws IOException {
1074         final var selfRecipientId = account.getSelfRecipientId();
1075         final var members = group.getMembersIncludingPendingWithout(selfRecipientId);
1076         group.setGroup(newDecryptedGroup, this::resolveRecipient);
1077         members.addAll(group.getMembersIncludingPendingWithout(selfRecipientId));
1078
1079         final var messageBuilder = getGroupUpdateMessageBuilder(group, groupChange.toByteArray());
1080         account.getGroupStore().updateGroup(group);
1081         return sendHelper.sendGroupMessage(messageBuilder.build(), members);
1082     }
1083
1084     private static int currentTimeDays() {
1085         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
1086     }
1087
1088     private GroupsV2AuthorizationString getGroupAuthForToday(
1089             final GroupSecretParams groupSecretParams
1090     ) throws IOException {
1091         final var today = currentTimeDays();
1092         // Returns credentials for the next 7 days
1093         final var credentials = dependencies.getGroupsV2Api().getCredentials(today);
1094         // TODO cache credentials until they expire
1095         var authCredentialResponse = credentials.get(today);
1096         try {
1097             return dependencies.getGroupsV2Api()
1098                     .getGroupsV2AuthorizationString(account.getUuid(),
1099                             today,
1100                             groupSecretParams,
1101                             authCredentialResponse);
1102         } catch (VerificationFailedException e) {
1103             throw new IOException(e);
1104         }
1105     }
1106
1107     Pair<Long, List<SendMessageResult>> sendGroupInfoMessage(
1108             GroupIdV1 groupId, SignalServiceAddress recipient
1109     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
1110         GroupInfoV1 g;
1111         var group = getGroupForUpdating(groupId);
1112         if (!(group instanceof GroupInfoV1)) {
1113             throw new IOException("Received an invalid group request for a v2 group!");
1114         }
1115         g = (GroupInfoV1) group;
1116
1117         final var recipientId = resolveRecipient(recipient);
1118         if (!g.isMember(recipientId)) {
1119             throw new NotAGroupMemberException(groupId, g.name);
1120         }
1121
1122         var messageBuilder = getGroupUpdateMessageBuilder(g);
1123
1124         // Send group message only to the recipient who requested it
1125         return sendHelper.sendGroupMessage(messageBuilder.build(), Set.of(recipientId));
1126     }
1127
1128     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
1129         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
1130                 .withId(g.getGroupId().serialize())
1131                 .withName(g.name)
1132                 .withMembers(g.getMembers()
1133                         .stream()
1134                         .map(this::resolveSignalServiceAddress)
1135                         .collect(Collectors.toList()));
1136
1137         try {
1138             final var attachment = createGroupAvatarAttachment(g.getGroupId());
1139             if (attachment.isPresent()) {
1140                 group.withAvatar(attachment.get());
1141             }
1142         } catch (IOException e) {
1143             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
1144         }
1145
1146         return createMessageBuilder().asGroupMessage(group.build()).withExpiration(g.getMessageExpirationTime());
1147     }
1148
1149     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
1150         var group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
1151                 .withRevision(g.getGroup().getRevision())
1152                 .withSignedGroupChange(signedGroupChange);
1153         return createMessageBuilder().asGroupMessage(group.build()).withExpiration(g.getMessageExpirationTime());
1154     }
1155
1156     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
1157             GroupIdV1 groupId, SignalServiceAddress recipient
1158     ) throws IOException {
1159         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO).withId(groupId.serialize());
1160
1161         var messageBuilder = createMessageBuilder().asGroupMessage(group.build());
1162
1163         // Send group info request message to the recipient who sent us a message with this groupId
1164         return sendHelper.sendGroupMessage(messageBuilder.build(), Set.of(resolveRecipient(recipient)));
1165     }
1166
1167     void sendReceipt(
1168             SignalServiceAddress remoteAddress, long messageId
1169     ) throws IOException, UntrustedIdentityException {
1170         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
1171                 List.of(messageId),
1172                 System.currentTimeMillis());
1173
1174         sendHelper.sendReceiptMessage(receiptMessage, resolveRecipient(remoteAddress));
1175     }
1176
1177     public Pair<Long, List<SendMessageResult>> sendMessage(
1178             String messageText, List<String> attachments, List<String> recipients
1179     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
1180         final var messageBuilder = createMessageBuilder().withBody(messageText);
1181         if (attachments != null) {
1182             var attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
1183
1184             // Upload attachments here, so we only upload once even for multiple recipients
1185             var messageSender = dependencies.getMessageSender();
1186             var attachmentPointers = new ArrayList<SignalServiceAttachment>(attachmentStreams.size());
1187             for (var attachment : attachmentStreams) {
1188                 if (attachment.isStream()) {
1189                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
1190                 } else if (attachment.isPointer()) {
1191                     attachmentPointers.add(attachment.asPointer());
1192                 }
1193             }
1194
1195             messageBuilder.withAttachments(attachmentPointers);
1196         }
1197         return sendHelper.sendMessage(messageBuilder, getRecipientIds(recipients));
1198     }
1199
1200     public Pair<Long, SendMessageResult> sendSelfMessage(
1201             String messageText, List<String> attachments
1202     ) throws IOException, AttachmentInvalidException {
1203         final var messageBuilder = createMessageBuilder().withBody(messageText);
1204         if (attachments != null) {
1205             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
1206         }
1207         return sendHelper.sendSelfMessage(messageBuilder);
1208     }
1209
1210     public Pair<Long, List<SendMessageResult>> sendRemoteDeleteMessage(
1211             long targetSentTimestamp, List<String> recipients
1212     ) throws IOException, InvalidNumberException {
1213         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1214         final var messageBuilder = createMessageBuilder().withRemoteDelete(delete);
1215         return sendHelper.sendMessage(messageBuilder, getRecipientIds(recipients));
1216     }
1217
1218     public Pair<Long, List<SendMessageResult>> sendGroupRemoteDeleteMessage(
1219             long targetSentTimestamp, GroupId groupId
1220     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1221         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1222         final var messageBuilder = createMessageBuilder().withRemoteDelete(delete);
1223         return sendHelper.sendAsGroupMessage(messageBuilder, groupId);
1224     }
1225
1226     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
1227             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
1228     ) throws IOException, InvalidNumberException {
1229         var targetAuthorRecipientId = canonicalizeAndResolveRecipient(targetAuthor);
1230         var reaction = new SignalServiceDataMessage.Reaction(emoji,
1231                 remove,
1232                 resolveSignalServiceAddress(targetAuthorRecipientId),
1233                 targetSentTimestamp);
1234         final var messageBuilder = createMessageBuilder().withReaction(reaction);
1235         return sendHelper.sendMessage(messageBuilder, getRecipientIds(recipients));
1236     }
1237
1238     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1239         var messageBuilder = createMessageBuilder().asEndSessionMessage();
1240
1241         final var recipientIds = getRecipientIds(recipients);
1242         try {
1243             return sendHelper.sendMessage(messageBuilder, recipientIds);
1244         } finally {
1245             for (var recipientId : recipientIds) {
1246                 handleEndSession(recipientId);
1247             }
1248         }
1249     }
1250
1251     void renewSession(RecipientId recipientId) throws IOException {
1252         account.getSessionStore().archiveSessions(recipientId);
1253         if (!recipientId.equals(getSelfRecipientId())) {
1254             sendHelper.sendNullMessage(recipientId);
1255         }
1256     }
1257
1258     public void setContactName(String number, String name) throws InvalidNumberException, NotMasterDeviceException {
1259         if (!account.isMasterDevice()) {
1260             throw new NotMasterDeviceException();
1261         }
1262         final var recipientId = canonicalizeAndResolveRecipient(number);
1263         var contact = account.getContactStore().getContact(recipientId);
1264         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1265         account.getContactStore().storeContact(recipientId, builder.withName(name).build());
1266     }
1267
1268     public void setContactBlocked(
1269             String number, boolean blocked
1270     ) throws InvalidNumberException, NotMasterDeviceException {
1271         if (!account.isMasterDevice()) {
1272             throw new NotMasterDeviceException();
1273         }
1274         setContactBlocked(canonicalizeAndResolveRecipient(number), blocked);
1275     }
1276
1277     private void setContactBlocked(RecipientId recipientId, boolean blocked) {
1278         var contact = account.getContactStore().getContact(recipientId);
1279         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1280         account.getContactStore().storeContact(recipientId, builder.withBlocked(blocked).build());
1281     }
1282
1283     public void setGroupBlocked(final GroupId groupId, final boolean blocked) throws GroupNotFoundException {
1284         var group = getGroup(groupId);
1285         if (group == null) {
1286             throw new GroupNotFoundException(groupId);
1287         }
1288
1289         group.setBlocked(blocked);
1290         account.getGroupStore().updateGroup(group);
1291     }
1292
1293     private void setExpirationTimer(RecipientId recipientId, int messageExpirationTimer) {
1294         var contact = account.getContactStore().getContact(recipientId);
1295         if (contact != null && contact.getMessageExpirationTime() == messageExpirationTimer) {
1296             return;
1297         }
1298         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1299         account.getContactStore()
1300                 .storeContact(recipientId, builder.withMessageExpirationTime(messageExpirationTimer).build());
1301     }
1302
1303     private void sendExpirationTimerUpdate(RecipientId recipientId) throws IOException {
1304         final var messageBuilder = createMessageBuilder().asExpirationUpdate();
1305         sendHelper.sendMessage(messageBuilder, Set.of(recipientId));
1306     }
1307
1308     /**
1309      * Change the expiration timer for a contact
1310      */
1311     public void setExpirationTimer(
1312             String number, int messageExpirationTimer
1313     ) throws IOException, InvalidNumberException {
1314         var recipientId = canonicalizeAndResolveRecipient(number);
1315         setExpirationTimer(recipientId, messageExpirationTimer);
1316         sendExpirationTimerUpdate(recipientId);
1317     }
1318
1319     /**
1320      * Change the expiration timer for a group
1321      */
1322     private void setExpirationTimer(
1323             GroupInfoV1 groupInfoV1, int messageExpirationTimer
1324     ) throws NotAGroupMemberException, GroupNotFoundException, IOException {
1325         groupInfoV1.messageExpirationTime = messageExpirationTimer;
1326         account.getGroupStore().updateGroup(groupInfoV1);
1327         sendExpirationTimerUpdate(groupInfoV1.getGroupId());
1328     }
1329
1330     private void sendExpirationTimerUpdate(GroupIdV1 groupId) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1331         final var messageBuilder = createMessageBuilder().asExpirationUpdate();
1332         sendHelper.sendAsGroupMessage(messageBuilder, groupId);
1333     }
1334
1335     /**
1336      * Upload the sticker pack from path.
1337      *
1338      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1339      * @return if successful, returns the URL to install the sticker pack in the signal app
1340      */
1341     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1342         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
1343
1344         var messageSender = dependencies.getMessageSender();
1345
1346         var packKey = KeyUtils.createStickerUploadKey();
1347         var packIdString = messageSender.uploadStickerManifest(manifest, packKey);
1348         var packId = StickerPackId.deserialize(Hex.fromStringCondensed(packIdString));
1349
1350         var sticker = new Sticker(packId, packKey);
1351         account.getStickerStore().updateSticker(sticker);
1352
1353         try {
1354             return new URI("https",
1355                     "signal.art",
1356                     "/addstickers/",
1357                     "pack_id="
1358                             + URLEncoder.encode(Hex.toStringCondensed(packId.serialize()), StandardCharsets.UTF_8)
1359                             + "&pack_key="
1360                             + URLEncoder.encode(Hex.toStringCondensed(packKey), StandardCharsets.UTF_8)).toString();
1361         } catch (URISyntaxException e) {
1362             throw new AssertionError(e);
1363         }
1364     }
1365
1366     public void requestAllSyncData() throws IOException {
1367         requestSyncGroups();
1368         requestSyncContacts();
1369         requestSyncBlocked();
1370         requestSyncConfiguration();
1371         requestSyncKeys();
1372     }
1373
1374     private void requestSyncGroups() throws IOException {
1375         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1376                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1377                 .build();
1378         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1379         sendHelper.sendSyncMessage(message);
1380     }
1381
1382     private void requestSyncContacts() throws IOException {
1383         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1384                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1385                 .build();
1386         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1387         sendHelper.sendSyncMessage(message);
1388     }
1389
1390     private void requestSyncBlocked() throws IOException {
1391         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1392                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1393                 .build();
1394         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1395         sendHelper.sendSyncMessage(message);
1396     }
1397
1398     private void requestSyncConfiguration() throws IOException {
1399         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1400                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1401                 .build();
1402         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1403         sendHelper.sendSyncMessage(message);
1404     }
1405
1406     private void requestSyncKeys() throws IOException {
1407         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1408                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
1409                 .build();
1410         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1411         sendHelper.sendSyncMessage(message);
1412     }
1413
1414     private byte[] getSenderCertificate() {
1415         byte[] certificate;
1416         try {
1417             if (account.isPhoneNumberShared()) {
1418                 certificate = dependencies.getAccountManager().getSenderCertificate();
1419             } else {
1420                 certificate = dependencies.getAccountManager().getSenderCertificateForPhoneNumberPrivacy();
1421             }
1422         } catch (IOException e) {
1423             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1424             return null;
1425         }
1426         // TODO cache for a day
1427         return certificate;
1428     }
1429
1430     private Set<RecipientId> getRecipientIds(Collection<String> numbers) throws InvalidNumberException {
1431         final var signalServiceAddresses = new HashSet<SignalServiceAddress>(numbers.size());
1432         final var addressesMissingUuid = new HashSet<SignalServiceAddress>();
1433
1434         for (var number : numbers) {
1435             final var resolvedAddress = resolveSignalServiceAddress(canonicalizeAndResolveRecipient(number));
1436             if (resolvedAddress.getUuid().isPresent()) {
1437                 signalServiceAddresses.add(resolvedAddress);
1438             } else {
1439                 addressesMissingUuid.add(resolvedAddress);
1440             }
1441         }
1442
1443         final var numbersMissingUuid = addressesMissingUuid.stream()
1444                 .map(a -> a.getNumber().get())
1445                 .collect(Collectors.toSet());
1446         Map<String, UUID> registeredUsers;
1447         try {
1448             registeredUsers = getRegisteredUsers(numbersMissingUuid);
1449         } catch (IOException e) {
1450             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1451             registeredUsers = Map.of();
1452         }
1453
1454         for (var address : addressesMissingUuid) {
1455             final var number = address.getNumber().get();
1456             if (registeredUsers.containsKey(number)) {
1457                 final var newAddress = resolveSignalServiceAddress(resolveRecipientTrusted(new SignalServiceAddress(
1458                         registeredUsers.get(number),
1459                         number)));
1460                 signalServiceAddresses.add(newAddress);
1461             } else {
1462                 signalServiceAddresses.add(address);
1463             }
1464         }
1465
1466         return signalServiceAddresses.stream().map(this::resolveRecipient).collect(Collectors.toSet());
1467     }
1468
1469     private RecipientId refreshRegisteredUser(RecipientId recipientId) throws IOException {
1470         final var address = resolveSignalServiceAddress(recipientId);
1471         if (!address.getNumber().isPresent()) {
1472             return recipientId;
1473         }
1474         final var number = address.getNumber().get();
1475         final var uuidMap = getRegisteredUsers(Set.of(number));
1476         return resolveRecipientTrusted(new SignalServiceAddress(uuidMap.getOrDefault(number, null), number));
1477     }
1478
1479     private Map<String, UUID> getRegisteredUsers(final Set<String> numbers) throws IOException {
1480         try {
1481             return dependencies.getAccountManager()
1482                     .getRegisteredUsers(ServiceConfig.getIasKeyStore(),
1483                             numbers,
1484                             serviceEnvironmentConfig.getCdsMrenclave());
1485         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
1486             throw new IOException(e);
1487         }
1488     }
1489
1490     public void sendTypingMessage(
1491             TypingAction action, Set<String> recipients
1492     ) throws IOException, UntrustedIdentityException, InvalidNumberException {
1493         final var timestamp = System.currentTimeMillis();
1494         var message = new SignalServiceTypingMessage(action.toSignalService(), timestamp, Optional.absent());
1495         sendHelper.sendTypingMessage(message, getRecipientIds(recipients));
1496     }
1497
1498     public void sendGroupTypingMessage(
1499             TypingAction action, GroupId groupId
1500     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1501         final var timestamp = System.currentTimeMillis();
1502         final var message = new SignalServiceTypingMessage(action.toSignalService(),
1503                 timestamp,
1504                 Optional.of(groupId.serialize()));
1505         sendHelper.sendGroupTypingMessage(message, groupId);
1506     }
1507
1508     private SignalServiceDataMessage.Builder createMessageBuilder() {
1509         final var timestamp = System.currentTimeMillis();
1510
1511         var messageBuilder = SignalServiceDataMessage.newBuilder();
1512         messageBuilder.withTimestamp(timestamp);
1513         return messageBuilder;
1514     }
1515
1516     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, ProtocolUntrustedIdentityException, InvalidMessageStructureException {
1517         return dependencies.getCipher().decrypt(envelope);
1518     }
1519
1520     private void handleEndSession(RecipientId recipientId) {
1521         account.getSessionStore().deleteAllSessions(recipientId);
1522     }
1523
1524     private List<HandleAction> handleSignalServiceDataMessage(
1525             SignalServiceDataMessage message,
1526             boolean isSync,
1527             SignalServiceAddress source,
1528             SignalServiceAddress destination,
1529             boolean ignoreAttachments
1530     ) {
1531         var actions = new ArrayList<HandleAction>();
1532         if (message.getGroupContext().isPresent()) {
1533             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1534                 var groupInfo = message.getGroupContext().get().getGroupV1().get();
1535                 var groupId = GroupId.v1(groupInfo.getGroupId());
1536                 var group = getGroup(groupId);
1537                 if (group == null || group instanceof GroupInfoV1) {
1538                     var groupV1 = (GroupInfoV1) group;
1539                     switch (groupInfo.getType()) {
1540                         case UPDATE: {
1541                             if (groupV1 == null) {
1542                                 groupV1 = new GroupInfoV1(groupId);
1543                             }
1544
1545                             if (groupInfo.getAvatar().isPresent()) {
1546                                 var avatar = groupInfo.getAvatar().get();
1547                                 downloadGroupAvatar(avatar, groupV1.getGroupId());
1548                             }
1549
1550                             if (groupInfo.getName().isPresent()) {
1551                                 groupV1.name = groupInfo.getName().get();
1552                             }
1553
1554                             if (groupInfo.getMembers().isPresent()) {
1555                                 groupV1.addMembers(groupInfo.getMembers()
1556                                         .get()
1557                                         .stream()
1558                                         .map(this::resolveRecipient)
1559                                         .collect(Collectors.toSet()));
1560                             }
1561
1562                             account.getGroupStore().updateGroup(groupV1);
1563                             break;
1564                         }
1565                         case DELIVER:
1566                             if (groupV1 == null && !isSync) {
1567                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1568                             }
1569                             break;
1570                         case QUIT: {
1571                             if (groupV1 != null) {
1572                                 groupV1.removeMember(resolveRecipient(source));
1573                                 account.getGroupStore().updateGroup(groupV1);
1574                             }
1575                             break;
1576                         }
1577                         case REQUEST_INFO:
1578                             if (groupV1 != null && !isSync) {
1579                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
1580                             }
1581                             break;
1582                     }
1583                 } else {
1584                     // Received a group v1 message for a v2 group
1585                 }
1586             }
1587             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1588                 final var groupContext = message.getGroupContext().get().getGroupV2().get();
1589                 final var groupMasterKey = groupContext.getMasterKey();
1590
1591                 getOrMigrateGroup(groupMasterKey,
1592                         groupContext.getRevision(),
1593                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1594             }
1595         }
1596
1597         final var conversationPartnerAddress = isSync ? destination : source;
1598         if (conversationPartnerAddress != null && message.isEndSession()) {
1599             handleEndSession(resolveRecipient(conversationPartnerAddress));
1600         }
1601         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1602             if (message.getGroupContext().isPresent()) {
1603                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1604                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1605                     var group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1606                     if (group != null) {
1607                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1608                             group.messageExpirationTime = message.getExpiresInSeconds();
1609                             account.getGroupStore().updateGroup(group);
1610                         }
1611                     }
1612                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1613                     // disappearing message timer already stored in the DecryptedGroup
1614                 }
1615             } else if (conversationPartnerAddress != null) {
1616                 setExpirationTimer(resolveRecipient(conversationPartnerAddress), message.getExpiresInSeconds());
1617             }
1618         }
1619         if (!ignoreAttachments) {
1620             if (message.getAttachments().isPresent()) {
1621                 for (var attachment : message.getAttachments().get()) {
1622                     downloadAttachment(attachment);
1623                 }
1624             }
1625             if (message.getSharedContacts().isPresent()) {
1626                 for (var contact : message.getSharedContacts().get()) {
1627                     if (contact.getAvatar().isPresent()) {
1628                         downloadAttachment(contact.getAvatar().get().getAttachment());
1629                     }
1630                 }
1631             }
1632         }
1633         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1634             final ProfileKey profileKey;
1635             try {
1636                 profileKey = new ProfileKey(message.getProfileKey().get());
1637             } catch (InvalidInputException e) {
1638                 throw new AssertionError(e);
1639             }
1640             if (source.matches(account.getSelfAddress())) {
1641                 this.account.setProfileKey(profileKey);
1642             }
1643             this.account.getProfileStore().storeProfileKey(resolveRecipient(source), profileKey);
1644         }
1645         if (message.getPreviews().isPresent()) {
1646             final var previews = message.getPreviews().get();
1647             for (var preview : previews) {
1648                 if (preview.getImage().isPresent()) {
1649                     downloadAttachment(preview.getImage().get());
1650                 }
1651             }
1652         }
1653         if (message.getQuote().isPresent()) {
1654             final var quote = message.getQuote().get();
1655
1656             for (var quotedAttachment : quote.getAttachments()) {
1657                 final var thumbnail = quotedAttachment.getThumbnail();
1658                 if (thumbnail != null) {
1659                     downloadAttachment(thumbnail);
1660                 }
1661             }
1662         }
1663         if (message.getSticker().isPresent()) {
1664             final var messageSticker = message.getSticker().get();
1665             final var stickerPackId = StickerPackId.deserialize(messageSticker.getPackId());
1666             var sticker = account.getStickerStore().getSticker(stickerPackId);
1667             if (sticker == null) {
1668                 sticker = new Sticker(stickerPackId, messageSticker.getPackKey());
1669                 account.getStickerStore().updateSticker(sticker);
1670             }
1671             enqueueJob(new RetrieveStickerPackJob(stickerPackId, messageSticker.getPackKey()));
1672         }
1673         return actions;
1674     }
1675
1676     private GroupInfoV2 getOrMigrateGroup(
1677             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1678     ) {
1679         final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1680
1681         var groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1682         var groupInfo = getGroup(groupId);
1683         final GroupInfoV2 groupInfoV2;
1684         if (groupInfo instanceof GroupInfoV1) {
1685             // Received a v2 group message for a v1 group, we need to locally migrate the group
1686             account.getGroupStore().deleteGroupV1(((GroupInfoV1) groupInfo).getGroupId());
1687             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1688             logger.info("Locally migrated group {} to group v2, id: {}",
1689                     groupInfo.getGroupId().toBase64(),
1690                     groupInfoV2.getGroupId().toBase64());
1691         } else if (groupInfo instanceof GroupInfoV2) {
1692             groupInfoV2 = (GroupInfoV2) groupInfo;
1693         } else {
1694             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1695         }
1696
1697         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1698             DecryptedGroup group = null;
1699             if (signedGroupChange != null
1700                     && groupInfoV2.getGroup() != null
1701                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1702                 group = groupV2Helper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(),
1703                         signedGroupChange,
1704                         groupMasterKey);
1705             }
1706             if (group == null) {
1707                 group = groupV2Helper.getDecryptedGroup(groupSecretParams);
1708             }
1709             if (group != null) {
1710                 storeProfileKeysFromMembers(group);
1711                 final var avatar = group.getAvatar();
1712                 if (avatar != null && !avatar.isEmpty()) {
1713                     downloadGroupAvatar(groupId, groupSecretParams, avatar);
1714                 }
1715             }
1716             groupInfoV2.setGroup(group, this::resolveRecipient);
1717             account.getGroupStore().updateGroup(groupInfoV2);
1718         }
1719
1720         return groupInfoV2;
1721     }
1722
1723     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1724         for (var member : group.getMembersList()) {
1725             final var uuid = UuidUtil.parseOrThrow(member.getUuid().toByteArray());
1726             final var recipientId = account.getRecipientStore().resolveRecipient(uuid);
1727             try {
1728                 account.getProfileStore()
1729                         .storeProfileKey(recipientId, new ProfileKey(member.getProfileKey().toByteArray()));
1730             } catch (InvalidInputException ignored) {
1731             }
1732         }
1733     }
1734
1735     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1736         Set<HandleAction> queuedActions = new HashSet<>();
1737         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
1738             var actions = retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
1739             if (actions != null) {
1740                 queuedActions.addAll(actions);
1741             }
1742         }
1743         for (var action : queuedActions) {
1744             try {
1745                 action.execute(this);
1746             } catch (Throwable e) {
1747                 if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
1748                     Thread.currentThread().interrupt();
1749                 }
1750                 logger.warn("Message action failed.", e);
1751             }
1752         }
1753     }
1754
1755     private List<HandleAction> retryFailedReceivedMessage(
1756             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
1757     ) {
1758         var envelope = cachedMessage.loadEnvelope();
1759         if (envelope == null) {
1760             return null;
1761         }
1762         SignalServiceContent content = null;
1763         List<HandleAction> actions = null;
1764         if (!envelope.isReceipt()) {
1765             try {
1766                 content = decryptMessage(envelope);
1767             } catch (ProtocolUntrustedIdentityException e) {
1768                 if (!envelope.hasSource()) {
1769                     final var identifier = e.getSender();
1770                     final var recipientId = resolveRecipient(identifier);
1771                     try {
1772                         account.getMessageCache().replaceSender(cachedMessage, recipientId);
1773                     } catch (IOException ioException) {
1774                         logger.warn("Failed to move cached message to recipient folder: {}", ioException.getMessage());
1775                     }
1776                 }
1777                 return null;
1778             } catch (Exception er) {
1779                 // All other errors are not recoverable, so delete the cached message
1780                 cachedMessage.delete();
1781                 return null;
1782             }
1783             actions = handleMessage(envelope, content, ignoreAttachments);
1784         }
1785         handler.handleMessage(envelope, content, null);
1786         cachedMessage.delete();
1787         return actions;
1788     }
1789
1790     public void receiveMessages(
1791             long timeout,
1792             TimeUnit unit,
1793             boolean returnOnTimeout,
1794             boolean ignoreAttachments,
1795             ReceiveMessageHandler handler
1796     ) throws IOException, InterruptedException {
1797         retryFailedReceivedMessages(handler, ignoreAttachments);
1798
1799         Set<HandleAction> queuedActions = null;
1800
1801         final var signalWebSocket = dependencies.getSignalWebSocket();
1802         signalWebSocket.connect();
1803
1804         var hasCaughtUpWithOldMessages = false;
1805
1806         while (!Thread.interrupted()) {
1807             SignalServiceEnvelope envelope;
1808             SignalServiceContent content = null;
1809             Exception exception = null;
1810             final CachedMessage[] cachedMessage = {null};
1811             account.setLastReceiveTimestamp(System.currentTimeMillis());
1812             logger.debug("Checking for new message from server");
1813             try {
1814                 var result = signalWebSocket.readOrEmpty(unit.toMillis(timeout), envelope1 -> {
1815                     final var recipientId = envelope1.hasSource()
1816                             ? resolveRecipient(envelope1.getSourceIdentifier())
1817                             : null;
1818                     // store message on disk, before acknowledging receipt to the server
1819                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1, recipientId);
1820                 });
1821                 logger.debug("New message received from server");
1822                 if (result.isPresent()) {
1823                     envelope = result.get();
1824                 } else {
1825                     // Received indicator that server queue is empty
1826                     hasCaughtUpWithOldMessages = true;
1827
1828                     if (queuedActions != null) {
1829                         for (var action : queuedActions) {
1830                             try {
1831                                 action.execute(this);
1832                             } catch (Throwable e) {
1833                                 if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
1834                                     Thread.currentThread().interrupt();
1835                                 }
1836                                 logger.warn("Message action failed.", e);
1837                             }
1838                         }
1839                         queuedActions.clear();
1840                         queuedActions = null;
1841                     }
1842
1843                     // Continue to wait another timeout for new messages
1844                     continue;
1845                 }
1846             } catch (AssertionError e) {
1847                 if (e.getCause() instanceof InterruptedException) {
1848                     throw (InterruptedException) e.getCause();
1849                 } else {
1850                     throw e;
1851                 }
1852             } catch (WebSocketUnavailableException e) {
1853                 logger.debug("Pipe unexpectedly unavailable, connecting");
1854                 signalWebSocket.connect();
1855                 continue;
1856             } catch (TimeoutException e) {
1857                 if (returnOnTimeout) return;
1858                 continue;
1859             }
1860
1861             if (envelope.hasSource()) {
1862                 // Store uuid if we don't have it already
1863                 // address/uuid in envelope is sent by server
1864                 resolveRecipientTrusted(envelope.getSourceAddress());
1865             }
1866             final var notAGroupMember = isNotAGroupMember(envelope, content);
1867             if (!envelope.isReceipt()) {
1868                 try {
1869                     content = decryptMessage(envelope);
1870                 } catch (Exception e) {
1871                     exception = e;
1872                 }
1873                 if (!envelope.hasSource() && content != null) {
1874                     // Store uuid if we don't have it already
1875                     // address/uuid is validated by unidentified sender certificate
1876                     resolveRecipientTrusted(content.getSender());
1877                 }
1878                 var actions = handleMessage(envelope, content, ignoreAttachments);
1879                 if (exception instanceof ProtocolInvalidMessageException) {
1880                     final var sender = resolveRecipient(((ProtocolInvalidMessageException) exception).getSender());
1881                     logger.debug("Received invalid message, queuing renew session action.");
1882                     actions.add(new RenewSessionAction(sender));
1883                 }
1884                 if (hasCaughtUpWithOldMessages) {
1885                     for (var action : actions) {
1886                         try {
1887                             action.execute(this);
1888                         } catch (Throwable e) {
1889                             if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
1890                                 Thread.currentThread().interrupt();
1891                             }
1892                             logger.warn("Message action failed.", e);
1893                         }
1894                     }
1895                 } else {
1896                     if (queuedActions == null) {
1897                         queuedActions = new HashSet<>();
1898                     }
1899                     queuedActions.addAll(actions);
1900                 }
1901             }
1902             if (isMessageBlocked(envelope, content)) {
1903                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
1904             } else if (notAGroupMember) {
1905                 logger.info("Ignoring a message from a non group member: {}", envelope.getTimestamp());
1906             } else {
1907                 handler.handleMessage(envelope, content, exception);
1908             }
1909             if (cachedMessage[0] != null) {
1910                 if (exception instanceof ProtocolUntrustedIdentityException) {
1911                     final var identifier = ((ProtocolUntrustedIdentityException) exception).getSender();
1912                     final var recipientId = resolveRecipient(identifier);
1913                     queuedActions.add(new RetrieveProfileAction(recipientId));
1914                     if (!envelope.hasSource()) {
1915                         try {
1916                             cachedMessage[0] = account.getMessageCache().replaceSender(cachedMessage[0], recipientId);
1917                         } catch (IOException ioException) {
1918                             logger.warn("Failed to move cached message to recipient folder: {}",
1919                                     ioException.getMessage());
1920                         }
1921                     }
1922                 } else {
1923                     cachedMessage[0].delete();
1924                 }
1925             }
1926         }
1927     }
1928
1929     private boolean isMessageBlocked(
1930             SignalServiceEnvelope envelope, SignalServiceContent content
1931     ) {
1932         SignalServiceAddress source;
1933         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1934             source = envelope.getSourceAddress();
1935         } else if (content != null) {
1936             source = content.getSender();
1937         } else {
1938             return false;
1939         }
1940         final var recipientId = resolveRecipient(source);
1941         if (isContactBlocked(recipientId)) {
1942             return true;
1943         }
1944
1945         if (content != null && content.getDataMessage().isPresent()) {
1946             var message = content.getDataMessage().get();
1947             if (message.getGroupContext().isPresent()) {
1948                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1949                 var group = getGroup(groupId);
1950                 if (group != null && group.isBlocked()) {
1951                     return true;
1952                 }
1953             }
1954         }
1955         return false;
1956     }
1957
1958     public boolean isContactBlocked(final String identifier) throws InvalidNumberException {
1959         final var recipientId = canonicalizeAndResolveRecipient(identifier);
1960         return isContactBlocked(recipientId);
1961     }
1962
1963     private boolean isContactBlocked(final RecipientId recipientId) {
1964         var sourceContact = account.getContactStore().getContact(recipientId);
1965         return sourceContact != null && sourceContact.isBlocked();
1966     }
1967
1968     private boolean isNotAGroupMember(
1969             SignalServiceEnvelope envelope, SignalServiceContent content
1970     ) {
1971         SignalServiceAddress source;
1972         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1973             source = envelope.getSourceAddress();
1974         } else if (content != null) {
1975             source = content.getSender();
1976         } else {
1977             return false;
1978         }
1979
1980         if (content != null && content.getDataMessage().isPresent()) {
1981             var message = content.getDataMessage().get();
1982             if (message.getGroupContext().isPresent()) {
1983                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1984                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1985                     if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
1986                         return false;
1987                     }
1988                 }
1989                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1990                 var group = getGroup(groupId);
1991                 if (group != null && !group.isMember(resolveRecipient(source))) {
1992                     return true;
1993                 }
1994             }
1995         }
1996         return false;
1997     }
1998
1999     private List<HandleAction> handleMessage(
2000             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
2001     ) {
2002         var actions = new ArrayList<HandleAction>();
2003         if (content != null) {
2004             final SignalServiceAddress sender;
2005             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
2006                 sender = envelope.getSourceAddress();
2007             } else {
2008                 sender = content.getSender();
2009             }
2010
2011             if (content.getDataMessage().isPresent()) {
2012                 var message = content.getDataMessage().get();
2013
2014                 if (content.isNeedsReceipt()) {
2015                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
2016                 }
2017
2018                 actions.addAll(handleSignalServiceDataMessage(message,
2019                         false,
2020                         sender,
2021                         account.getSelfAddress(),
2022                         ignoreAttachments));
2023             }
2024             if (content.getSyncMessage().isPresent()) {
2025                 account.setMultiDevice(true);
2026                 var syncMessage = content.getSyncMessage().get();
2027                 if (syncMessage.getSent().isPresent()) {
2028                     var message = syncMessage.getSent().get();
2029                     final var destination = message.getDestination().orNull();
2030                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
2031                             true,
2032                             sender,
2033                             destination,
2034                             ignoreAttachments));
2035                 }
2036                 if (syncMessage.getRequest().isPresent() && account.isMasterDevice()) {
2037                     var rm = syncMessage.getRequest().get();
2038                     if (rm.isContactsRequest()) {
2039                         actions.add(SendSyncContactsAction.create());
2040                     }
2041                     if (rm.isGroupsRequest()) {
2042                         actions.add(SendSyncGroupsAction.create());
2043                     }
2044                     if (rm.isBlockedListRequest()) {
2045                         actions.add(SendSyncBlockedListAction.create());
2046                     }
2047                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
2048                 }
2049                 if (syncMessage.getGroups().isPresent()) {
2050                     File tmpFile = null;
2051                     try {
2052                         tmpFile = IOUtils.createTempFile();
2053                         final var groupsMessage = syncMessage.getGroups().get();
2054                         try (var attachmentAsStream = retrieveAttachmentAsStream(groupsMessage.asPointer(), tmpFile)) {
2055                             var s = new DeviceGroupsInputStream(attachmentAsStream);
2056                             DeviceGroup g;
2057                             while (true) {
2058                                 try {
2059                                     g = s.read();
2060                                 } catch (IOException e) {
2061                                     logger.warn("Sync groups contained invalid group, ignoring: {}", e.getMessage());
2062                                     continue;
2063                                 }
2064                                 if (g == null) {
2065                                     break;
2066                                 }
2067                                 var syncGroup = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(g.getId()));
2068                                 if (syncGroup != null) {
2069                                     if (g.getName().isPresent()) {
2070                                         syncGroup.name = g.getName().get();
2071                                     }
2072                                     syncGroup.addMembers(g.getMembers()
2073                                             .stream()
2074                                             .map(this::resolveRecipient)
2075                                             .collect(Collectors.toSet()));
2076                                     if (!g.isActive()) {
2077                                         syncGroup.removeMember(account.getSelfRecipientId());
2078                                     } else {
2079                                         // Add ourself to the member set as it's marked as active
2080                                         syncGroup.addMembers(List.of(account.getSelfRecipientId()));
2081                                     }
2082                                     syncGroup.blocked = g.isBlocked();
2083                                     if (g.getColor().isPresent()) {
2084                                         syncGroup.color = g.getColor().get();
2085                                     }
2086
2087                                     if (g.getAvatar().isPresent()) {
2088                                         downloadGroupAvatar(g.getAvatar().get(), syncGroup.getGroupId());
2089                                     }
2090                                     syncGroup.archived = g.isArchived();
2091                                     account.getGroupStore().updateGroup(syncGroup);
2092                                 }
2093                             }
2094                         }
2095                     } catch (Exception e) {
2096                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
2097                                 tmpFile,
2098                                 e.getMessage());
2099                     } finally {
2100                         if (tmpFile != null) {
2101                             try {
2102                                 Files.delete(tmpFile.toPath());
2103                             } catch (IOException e) {
2104                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
2105                                         tmpFile,
2106                                         e.getMessage());
2107                             }
2108                         }
2109                     }
2110                 }
2111                 if (syncMessage.getBlockedList().isPresent()) {
2112                     final var blockedListMessage = syncMessage.getBlockedList().get();
2113                     for (var address : blockedListMessage.getAddresses()) {
2114                         setContactBlocked(resolveRecipient(address), true);
2115                     }
2116                     for (var groupId : blockedListMessage.getGroupIds()
2117                             .stream()
2118                             .map(GroupId::unknownVersion)
2119                             .collect(Collectors.toSet())) {
2120                         try {
2121                             setGroupBlocked(groupId, true);
2122                         } catch (GroupNotFoundException e) {
2123                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
2124                                     groupId.toBase64());
2125                         }
2126                     }
2127                 }
2128                 if (syncMessage.getContacts().isPresent()) {
2129                     File tmpFile = null;
2130                     try {
2131                         tmpFile = IOUtils.createTempFile();
2132                         final var contactsMessage = syncMessage.getContacts().get();
2133                         try (var attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
2134                                 .asPointer(), tmpFile)) {
2135                             var s = new DeviceContactsInputStream(attachmentAsStream);
2136                             DeviceContact c;
2137                             while (true) {
2138                                 try {
2139                                     c = s.read();
2140                                 } catch (IOException e) {
2141                                     logger.warn("Sync contacts contained invalid contact, ignoring: {}",
2142                                             e.getMessage());
2143                                     continue;
2144                                 }
2145                                 if (c == null) {
2146                                     break;
2147                                 }
2148                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
2149                                     account.setProfileKey(c.getProfileKey().get());
2150                                 }
2151                                 final var recipientId = resolveRecipientTrusted(c.getAddress());
2152                                 var contact = account.getContactStore().getContact(recipientId);
2153                                 final var builder = contact == null
2154                                         ? Contact.newBuilder()
2155                                         : Contact.newBuilder(contact);
2156                                 if (c.getName().isPresent()) {
2157                                     builder.withName(c.getName().get());
2158                                 }
2159                                 if (c.getColor().isPresent()) {
2160                                     builder.withColor(c.getColor().get());
2161                                 }
2162                                 if (c.getProfileKey().isPresent()) {
2163                                     account.getProfileStore().storeProfileKey(recipientId, c.getProfileKey().get());
2164                                 }
2165                                 if (c.getVerified().isPresent()) {
2166                                     final var verifiedMessage = c.getVerified().get();
2167                                     account.getIdentityKeyStore()
2168                                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2169                                                     verifiedMessage.getIdentityKey(),
2170                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2171                                 }
2172                                 if (c.getExpirationTimer().isPresent()) {
2173                                     builder.withMessageExpirationTime(c.getExpirationTimer().get());
2174                                 }
2175                                 builder.withBlocked(c.isBlocked());
2176                                 builder.withArchived(c.isArchived());
2177                                 account.getContactStore().storeContact(recipientId, builder.build());
2178
2179                                 if (c.getAvatar().isPresent()) {
2180                                     downloadContactAvatar(c.getAvatar().get(), c.getAddress());
2181                                 }
2182                             }
2183                         }
2184                     } catch (Exception e) {
2185                         logger.warn("Failed to handle received sync contacts “{}”, ignoring: {}",
2186                                 tmpFile,
2187                                 e.getMessage());
2188                     } finally {
2189                         if (tmpFile != null) {
2190                             try {
2191                                 Files.delete(tmpFile.toPath());
2192                             } catch (IOException e) {
2193                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2194                                         tmpFile,
2195                                         e.getMessage());
2196                             }
2197                         }
2198                     }
2199                 }
2200                 if (syncMessage.getVerified().isPresent()) {
2201                     final var verifiedMessage = syncMessage.getVerified().get();
2202                     account.getIdentityKeyStore()
2203                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2204                                     verifiedMessage.getIdentityKey(),
2205                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2206                 }
2207                 if (syncMessage.getStickerPackOperations().isPresent()) {
2208                     final var stickerPackOperationMessages = syncMessage.getStickerPackOperations().get();
2209                     for (var m : stickerPackOperationMessages) {
2210                         if (!m.getPackId().isPresent()) {
2211                             continue;
2212                         }
2213                         final var stickerPackId = StickerPackId.deserialize(m.getPackId().get());
2214                         final var installed = !m.getType().isPresent()
2215                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL;
2216
2217                         var sticker = account.getStickerStore().getSticker(stickerPackId);
2218                         if (m.getPackKey().isPresent()) {
2219                             if (sticker == null) {
2220                                 sticker = new Sticker(stickerPackId, m.getPackKey().get());
2221                             }
2222                             if (installed) {
2223                                 enqueueJob(new RetrieveStickerPackJob(stickerPackId, m.getPackKey().get()));
2224                             }
2225                         }
2226
2227                         if (sticker != null) {
2228                             sticker.setInstalled(installed);
2229                             account.getStickerStore().updateSticker(sticker);
2230                         }
2231                     }
2232                 }
2233                 if (syncMessage.getFetchType().isPresent()) {
2234                     switch (syncMessage.getFetchType().get()) {
2235                         case LOCAL_PROFILE:
2236                             getRecipientProfile(account.getSelfRecipientId(), true);
2237                         case STORAGE_MANIFEST:
2238                             // TODO
2239                     }
2240                 }
2241                 if (syncMessage.getKeys().isPresent()) {
2242                     final var keysMessage = syncMessage.getKeys().get();
2243                     if (keysMessage.getStorageService().isPresent()) {
2244                         final var storageKey = keysMessage.getStorageService().get();
2245                         account.setStorageKey(storageKey);
2246                     }
2247                 }
2248                 if (syncMessage.getConfiguration().isPresent()) {
2249                     // TODO
2250                 }
2251             }
2252         }
2253         return actions;
2254     }
2255
2256     private void downloadContactAvatar(SignalServiceAttachment avatar, SignalServiceAddress address) {
2257         try {
2258             avatarStore.storeContactAvatar(address, outputStream -> retrieveAttachment(avatar, outputStream));
2259         } catch (IOException e) {
2260             logger.warn("Failed to download avatar for contact {}, ignoring: {}", address, e.getMessage());
2261         }
2262     }
2263
2264     private void downloadGroupAvatar(SignalServiceAttachment avatar, GroupId groupId) {
2265         try {
2266             avatarStore.storeGroupAvatar(groupId, outputStream -> retrieveAttachment(avatar, outputStream));
2267         } catch (IOException e) {
2268             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2269         }
2270     }
2271
2272     private void downloadGroupAvatar(GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey) {
2273         try {
2274             avatarStore.storeGroupAvatar(groupId,
2275                     outputStream -> retrieveGroupV2Avatar(groupSecretParams, cdnKey, outputStream));
2276         } catch (IOException e) {
2277             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2278         }
2279     }
2280
2281     private void downloadProfileAvatar(
2282             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2283     ) {
2284         try {
2285             avatarStore.storeProfileAvatar(address,
2286                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
2287         } catch (Throwable e) {
2288             if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
2289                 Thread.currentThread().interrupt();
2290             }
2291             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
2292         }
2293     }
2294
2295     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2296         return attachmentStore.getAttachmentFile(attachmentId);
2297     }
2298
2299     private void downloadAttachment(final SignalServiceAttachment attachment) {
2300         if (!attachment.isPointer()) {
2301             logger.warn("Invalid state, can't store an attachment stream.");
2302         }
2303
2304         var pointer = attachment.asPointer();
2305         if (pointer.getPreview().isPresent()) {
2306             final var preview = pointer.getPreview().get();
2307             try {
2308                 attachmentStore.storeAttachmentPreview(pointer.getRemoteId(),
2309                         outputStream -> outputStream.write(preview, 0, preview.length));
2310             } catch (IOException e) {
2311                 logger.warn("Failed to download attachment preview, ignoring: {}", e.getMessage());
2312             }
2313         }
2314
2315         try {
2316             attachmentStore.storeAttachment(pointer.getRemoteId(),
2317                     outputStream -> retrieveAttachmentPointer(pointer, outputStream));
2318         } catch (IOException e) {
2319             logger.warn("Failed to download attachment ({}), ignoring: {}", pointer.getRemoteId(), e.getMessage());
2320         }
2321     }
2322
2323     private void retrieveGroupV2Avatar(
2324             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
2325     ) throws IOException {
2326         var groupOperations = dependencies.getGroupsV2Operations().forGroup(groupSecretParams);
2327
2328         var tmpFile = IOUtils.createTempFile();
2329         try (InputStream input = dependencies.getMessageReceiver()
2330                 .retrieveGroupsV2ProfileAvatar(cdnKey, tmpFile, ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2331             var encryptedData = IOUtils.readFully(input);
2332
2333             var decryptedData = groupOperations.decryptAvatar(encryptedData);
2334             outputStream.write(decryptedData);
2335         } finally {
2336             try {
2337                 Files.delete(tmpFile.toPath());
2338             } catch (IOException e) {
2339                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2340                         tmpFile,
2341                         e.getMessage());
2342             }
2343         }
2344     }
2345
2346     private void retrieveProfileAvatar(
2347             String avatarPath, ProfileKey profileKey, OutputStream outputStream
2348     ) throws IOException {
2349         var tmpFile = IOUtils.createTempFile();
2350         try (var input = dependencies.getMessageReceiver()
2351                 .retrieveProfileAvatar(avatarPath,
2352                         tmpFile,
2353                         profileKey,
2354                         ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2355             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2356             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2357         } finally {
2358             try {
2359                 Files.delete(tmpFile.toPath());
2360             } catch (IOException e) {
2361                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2362                         tmpFile,
2363                         e.getMessage());
2364             }
2365         }
2366     }
2367
2368     private void retrieveAttachment(
2369             final SignalServiceAttachment attachment, final OutputStream outputStream
2370     ) throws IOException {
2371         if (attachment.isPointer()) {
2372             var pointer = attachment.asPointer();
2373             retrieveAttachmentPointer(pointer, outputStream);
2374         } else {
2375             var stream = attachment.asStream();
2376             IOUtils.copyStream(stream.getInputStream(), outputStream);
2377         }
2378     }
2379
2380     private void retrieveAttachmentPointer(
2381             SignalServiceAttachmentPointer pointer, OutputStream outputStream
2382     ) throws IOException {
2383         var tmpFile = IOUtils.createTempFile();
2384         try (var input = retrieveAttachmentAsStream(pointer, tmpFile)) {
2385             IOUtils.copyStream(input, outputStream);
2386         } catch (MissingConfigurationException | InvalidMessageException e) {
2387             throw new IOException(e);
2388         } finally {
2389             try {
2390                 Files.delete(tmpFile.toPath());
2391             } catch (IOException e) {
2392                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2393                         tmpFile,
2394                         e.getMessage());
2395             }
2396         }
2397     }
2398
2399     private InputStream retrieveAttachmentAsStream(
2400             SignalServiceAttachmentPointer pointer, File tmpFile
2401     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2402         return dependencies.getMessageReceiver()
2403                 .retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2404     }
2405
2406     void sendGroups() throws IOException {
2407         var groupsFile = IOUtils.createTempFile();
2408
2409         try {
2410             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2411                 var out = new DeviceGroupsOutputStream(fos);
2412                 for (var record : getGroups()) {
2413                     if (record instanceof GroupInfoV1) {
2414                         var groupInfo = (GroupInfoV1) record;
2415                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2416                                 Optional.fromNullable(groupInfo.name),
2417                                 groupInfo.getMembers()
2418                                         .stream()
2419                                         .map(this::resolveSignalServiceAddress)
2420                                         .collect(Collectors.toList()),
2421                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2422                                 groupInfo.isMember(account.getSelfRecipientId()),
2423                                 Optional.of(groupInfo.messageExpirationTime),
2424                                 Optional.fromNullable(groupInfo.color),
2425                                 groupInfo.blocked,
2426                                 Optional.absent(),
2427                                 groupInfo.archived));
2428                     }
2429                 }
2430             }
2431
2432             if (groupsFile.exists() && groupsFile.length() > 0) {
2433                 try (var groupsFileStream = new FileInputStream(groupsFile)) {
2434                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2435                             .withStream(groupsFileStream)
2436                             .withContentType("application/octet-stream")
2437                             .withLength(groupsFile.length())
2438                             .build();
2439
2440                     sendHelper.sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2441                 }
2442             }
2443         } finally {
2444             try {
2445                 Files.delete(groupsFile.toPath());
2446             } catch (IOException e) {
2447                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2448             }
2449         }
2450     }
2451
2452     public void sendContacts() throws IOException {
2453         var contactsFile = IOUtils.createTempFile();
2454
2455         try {
2456             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2457                 var out = new DeviceContactsOutputStream(fos);
2458                 for (var contactPair : account.getContactStore().getContacts()) {
2459                     final var recipientId = contactPair.first();
2460                     final var contact = contactPair.second();
2461                     final var address = resolveSignalServiceAddress(recipientId);
2462
2463                     var currentIdentity = account.getIdentityKeyStore().getIdentity(recipientId);
2464                     VerifiedMessage verifiedMessage = null;
2465                     if (currentIdentity != null) {
2466                         verifiedMessage = new VerifiedMessage(address,
2467                                 currentIdentity.getIdentityKey(),
2468                                 currentIdentity.getTrustLevel().toVerifiedState(),
2469                                 currentIdentity.getDateAdded().getTime());
2470                     }
2471
2472                     var profileKey = account.getProfileStore().getProfileKey(recipientId);
2473                     out.write(new DeviceContact(address,
2474                             Optional.fromNullable(contact.getName()),
2475                             createContactAvatarAttachment(address),
2476                             Optional.fromNullable(contact.getColor()),
2477                             Optional.fromNullable(verifiedMessage),
2478                             Optional.fromNullable(profileKey),
2479                             contact.isBlocked(),
2480                             Optional.of(contact.getMessageExpirationTime()),
2481                             Optional.absent(),
2482                             contact.isArchived()));
2483                 }
2484
2485                 if (account.getProfileKey() != null) {
2486                     // Send our own profile key as well
2487                     out.write(new DeviceContact(account.getSelfAddress(),
2488                             Optional.absent(),
2489                             Optional.absent(),
2490                             Optional.absent(),
2491                             Optional.absent(),
2492                             Optional.of(account.getProfileKey()),
2493                             false,
2494                             Optional.absent(),
2495                             Optional.absent(),
2496                             false));
2497                 }
2498             }
2499
2500             if (contactsFile.exists() && contactsFile.length() > 0) {
2501                 try (var contactsFileStream = new FileInputStream(contactsFile)) {
2502                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2503                             .withStream(contactsFileStream)
2504                             .withContentType("application/octet-stream")
2505                             .withLength(contactsFile.length())
2506                             .build();
2507
2508                     sendHelper.sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream,
2509                             true)));
2510                 }
2511             }
2512         } finally {
2513             try {
2514                 Files.delete(contactsFile.toPath());
2515             } catch (IOException e) {
2516                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2517             }
2518         }
2519     }
2520
2521     void sendBlockedList() throws IOException {
2522         var addresses = new ArrayList<SignalServiceAddress>();
2523         for (var record : account.getContactStore().getContacts()) {
2524             if (record.second().isBlocked()) {
2525                 addresses.add(resolveSignalServiceAddress(record.first()));
2526             }
2527         }
2528         var groupIds = new ArrayList<byte[]>();
2529         for (var record : getGroups()) {
2530             if (record.isBlocked()) {
2531                 groupIds.add(record.getGroupId().serialize());
2532             }
2533         }
2534         sendHelper.sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2535     }
2536
2537     private void sendVerifiedMessage(
2538             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2539     ) throws IOException {
2540         var verifiedMessage = new VerifiedMessage(destination,
2541                 identityKey,
2542                 trustLevel.toVerifiedState(),
2543                 System.currentTimeMillis());
2544         sendHelper.sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2545     }
2546
2547     public List<Pair<RecipientId, Contact>> getContacts() {
2548         return account.getContactStore().getContacts();
2549     }
2550
2551     public String getContactOrProfileName(String number) throws InvalidNumberException {
2552         final var recipientId = canonicalizeAndResolveRecipient(number);
2553         final var recipient = account.getRecipientStore().getRecipient(recipientId);
2554         if (recipient == null) {
2555             return null;
2556         }
2557
2558         if (recipient.getContact() != null && !Util.isEmpty(recipient.getContact().getName())) {
2559             return recipient.getContact().getName();
2560         }
2561
2562         if (recipient.getProfile() != null && recipient.getProfile() != null) {
2563             return recipient.getProfile().getDisplayName();
2564         }
2565
2566         return null;
2567     }
2568
2569     public GroupInfo getGroup(GroupId groupId) {
2570         return getGroup(groupId, false);
2571     }
2572
2573     public GroupInfo getGroup(GroupId groupId, boolean forceUpdate) {
2574         final var group = account.getGroupStore().getGroup(groupId);
2575         if (group instanceof GroupInfoV2 && (forceUpdate || ((GroupInfoV2) group).getGroup() == null)) {
2576             final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(((GroupInfoV2) group).getMasterKey());
2577             ((GroupInfoV2) group).setGroup(groupV2Helper.getDecryptedGroup(groupSecretParams), this::resolveRecipient);
2578             account.getGroupStore().updateGroup(group);
2579         }
2580         return group;
2581     }
2582
2583     public List<IdentityInfo> getIdentities() {
2584         return account.getIdentityKeyStore().getIdentities();
2585     }
2586
2587     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2588         final var identity = account.getIdentityKeyStore().getIdentity(canonicalizeAndResolveRecipient(number));
2589         return identity == null ? List.of() : List.of(identity);
2590     }
2591
2592     /**
2593      * Trust this the identity with this fingerprint
2594      *
2595      * @param name        username of the identity
2596      * @param fingerprint Fingerprint
2597      */
2598     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2599         var recipientId = canonicalizeAndResolveRecipient(name);
2600         return trustIdentity(recipientId,
2601                 identityKey -> Arrays.equals(identityKey.serialize(), fingerprint),
2602                 TrustLevel.TRUSTED_VERIFIED);
2603     }
2604
2605     /**
2606      * Trust this the identity with this safety number
2607      *
2608      * @param name         username of the identity
2609      * @param safetyNumber Safety number
2610      */
2611     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2612         var recipientId = canonicalizeAndResolveRecipient(name);
2613         var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2614         return trustIdentity(recipientId,
2615                 identityKey -> safetyNumber.equals(computeSafetyNumber(address, identityKey)),
2616                 TrustLevel.TRUSTED_VERIFIED);
2617     }
2618
2619     /**
2620      * Trust all keys of this identity without verification
2621      *
2622      * @param name username of the identity
2623      */
2624     public boolean trustIdentityAllKeys(String name) throws InvalidNumberException {
2625         var recipientId = canonicalizeAndResolveRecipient(name);
2626         return trustIdentity(recipientId, identityKey -> true, TrustLevel.TRUSTED_UNVERIFIED);
2627     }
2628
2629     private boolean trustIdentity(
2630             RecipientId recipientId, Function<IdentityKey, Boolean> verifier, TrustLevel trustLevel
2631     ) {
2632         var identity = account.getIdentityKeyStore().getIdentity(recipientId);
2633         if (identity == null) {
2634             return false;
2635         }
2636
2637         if (!verifier.apply(identity.getIdentityKey())) {
2638             return false;
2639         }
2640
2641         account.getIdentityKeyStore().setIdentityTrustLevel(recipientId, identity.getIdentityKey(), trustLevel);
2642         try {
2643             var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2644             sendVerifiedMessage(address, identity.getIdentityKey(), trustLevel);
2645         } catch (IOException e) {
2646             logger.warn("Failed to send verification sync message: {}", e.getMessage());
2647         }
2648
2649         return true;
2650     }
2651
2652     private void handleIdentityFailure(
2653             final RecipientId recipientId, final SendMessageResult.IdentityFailure identityFailure
2654     ) {
2655         final var identityKey = identityFailure.getIdentityKey();
2656         if (identityKey != null) {
2657             final var newIdentity = account.getIdentityKeyStore().saveIdentity(recipientId, identityKey, new Date());
2658             if (newIdentity) {
2659                 account.getSessionStore().archiveSessions(recipientId);
2660             }
2661         } else {
2662             // Retrieve profile to get the current identity key from the server
2663             retrieveEncryptedProfile(recipientId);
2664         }
2665     }
2666
2667     public String computeSafetyNumber(
2668             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2669     ) {
2670         return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
2671                 account.getSelfAddress(),
2672                 getIdentityKeyPair().getPublicKey(),
2673                 theirAddress,
2674                 theirIdentityKey);
2675     }
2676
2677     @Deprecated
2678     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2679         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2680
2681         return resolveSignalServiceAddress(address);
2682     }
2683
2684     @Deprecated
2685     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2686         if (address.matches(account.getSelfAddress())) {
2687             return account.getSelfAddress();
2688         }
2689
2690         return account.getRecipientStore().resolveServiceAddress(address);
2691     }
2692
2693     public SignalServiceAddress resolveSignalServiceAddress(RecipientId recipientId) {
2694         return account.getRecipientStore().resolveServiceAddress(recipientId);
2695     }
2696
2697     public RecipientId canonicalizeAndResolveRecipient(String identifier) throws InvalidNumberException {
2698         var canonicalizedNumber = UuidUtil.isUuid(identifier)
2699                 ? identifier
2700                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2701
2702         return resolveRecipient(canonicalizedNumber);
2703     }
2704
2705     private RecipientId resolveRecipient(final String identifier) {
2706         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2707
2708         return resolveRecipient(address);
2709     }
2710
2711     public RecipientId resolveRecipient(SignalServiceAddress address) {
2712         return account.getRecipientStore().resolveRecipient(address);
2713     }
2714
2715     private RecipientId resolveRecipientTrusted(SignalServiceAddress address) {
2716         return account.getRecipientStore().resolveRecipientTrusted(address);
2717     }
2718
2719     private void enqueueJob(Job job) {
2720         var context = new Context(account,
2721                 dependencies.getAccountManager(),
2722                 dependencies.getMessageReceiver(),
2723                 stickerPackStore);
2724         job.run(context);
2725     }
2726
2727     @Override
2728     public void close() throws IOException {
2729         close(true);
2730     }
2731
2732     void close(boolean closeAccount) throws IOException {
2733         executor.shutdown();
2734
2735         dependencies.getSignalWebSocket().disconnect();
2736
2737         if (closeAccount && account != null) {
2738             account.close();
2739         }
2740         account = null;
2741     }
2742
2743     public interface ReceiveMessageHandler {
2744
2745         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2746     }
2747 }