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.UnidentifiedAccessHelper;
  37 import org.asamk.signal.manager.jobs.Context;
  38 import org.asamk.signal.manager.jobs.Job;
  39 import org.asamk.signal.manager.jobs.RetrieveStickerPackJob;
  40 import org.asamk.signal.manager.storage.SignalAccount;
  41 import org.asamk.signal.manager.storage.groups.GroupInfo;
  42 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  43 import org.asamk.signal.manager.storage.groups.GroupInfoV2;
  44 import org.asamk.signal.manager.storage.identities.IdentityInfo;
  45 import org.asamk.signal.manager.storage.messageCache.CachedMessage;
  46 import org.asamk.signal.manager.storage.recipients.Contact;
  47 import org.asamk.signal.manager.storage.recipients.Profile;
  48 import org.asamk.signal.manager.storage.recipients.RecipientId;
  49 import org.asamk.signal.manager.storage.stickers.Sticker;
  50 import org.asamk.signal.manager.storage.stickers.StickerPackId;
  51 import org.asamk.signal.manager.util.AttachmentUtils;
  52 import org.asamk.signal.manager.util.IOUtils;
  53 import org.asamk.signal.manager.util.KeyUtils;
  54 import org.asamk.signal.manager.util.ProfileUtils;
  55 import org.asamk.signal.manager.util.StickerUtils;
  56 import org.asamk.signal.manager.util.Utils;
  57 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  58 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  59 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  60 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  61 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  62 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  63 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  64 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  65 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  66 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  67 import org.signal.libsignal.metadata.SelfSendException;
  68 import org.signal.storageservice.protos.groups.GroupChange;
  69 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
  70 import org.signal.zkgroup.InvalidInputException;
  71 import org.signal.zkgroup.VerificationFailedException;
  72 import org.signal.zkgroup.groups.GroupMasterKey;
  73 import org.signal.zkgroup.groups.GroupSecretParams;
  74 import org.signal.zkgroup.profiles.ProfileKey;
  75 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  76 import org.slf4j.Logger;
  77 import org.slf4j.LoggerFactory;
  78 import org.whispersystems.libsignal.IdentityKey;
  79 import org.whispersystems.libsignal.IdentityKeyPair;
  80 import org.whispersystems.libsignal.InvalidKeyException;
  81 import org.whispersystems.libsignal.InvalidMessageException;
  82 import org.whispersystems.libsignal.ecc.ECPublicKey;
  83 import org.whispersystems.libsignal.state.PreKeyRecord;
  84 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  85 import org.whispersystems.libsignal.util.Pair;
  86 import org.whispersystems.libsignal.util.guava.Optional;
  87 import org.whispersystems.signalservice.api.InvalidMessageStructureException;
  88 import org.whispersystems.signalservice.api.SignalSessionLock;
  89 import org.whispersystems.signalservice.api.crypto.ContentHint;
  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.SentTranscriptMessage;
 115 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 116 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 117 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 118 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 119 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 120 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 121 import org.whispersystems.signalservice.api.push.exceptions.ConflictException;
 122 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 123 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 124 import org.whispersystems.signalservice.api.util.DeviceNameUtil;
 125 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 126 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
 127 import org.whispersystems.signalservice.api.util.UuidUtil;
 128 import org.whispersystems.signalservice.api.websocket.WebSocketUnavailableException;
 129 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 130 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 131 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 132 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 133 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 134 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 135 import org.whispersystems.signalservice.internal.util.Hex;
 136 import org.whispersystems.signalservice.internal.util.Util;
 137
 138 import java.io.Closeable;
 139 import java.io.File;
 140 import java.io.FileInputStream;
 141 import java.io.FileOutputStream;
 142 import java.io.IOException;
 143 import java.io.InputStream;
 144 import java.io.OutputStream;
 145 import java.net.URI;
 146 import java.net.URISyntaxException;
 147 import java.net.URLEncoder;
 148 import java.nio.charset.StandardCharsets;
 149 import java.nio.file.Files;
 150 import java.security.SignatureException;
 151 import java.util.ArrayList;
 152 import java.util.Arrays;
 153 import java.util.Base64;
 154 import java.util.Collection;
 155 import java.util.Date;
 156 import java.util.HashSet;
 157 import java.util.List;
 158 import java.util.Map;
 159 import java.util.Set;
 160 import java.util.UUID;
 161 import java.util.concurrent.ExecutorService;
 162 import java.util.concurrent.Executors;
 163 import java.util.concurrent.TimeUnit;
 164 import java.util.concurrent.TimeoutException;
 165 import java.util.concurrent.locks.ReentrantLock;
 166 import java.util.function.Function;
 167 import java.util.stream.Collectors;
 168
 169 import static org.asamk.signal.manager.config.ServiceConfig.capabilities;
 170
 171 public class Manager implements Closeable {
 172
 173     private final static Logger logger = LoggerFactory.getLogger(Manager.class);
 174
 175     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
 176     private final SignalDependencies dependencies;
 177
 178     private SignalAccount account;
 179
 180     private final ExecutorService executor = Executors.newCachedThreadPool();
 181
 182     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 183     private final ProfileHelper profileHelper;
 184     private final GroupV2Helper groupV2Helper;
 185     private final PinHelper pinHelper;
 186     private final AvatarStore avatarStore;
 187     private final AttachmentStore attachmentStore;
 188     private final StickerPackStore stickerPackStore;
 189     private final SignalSessionLock sessionLock = new SignalSessionLock() {
 190         private final ReentrantLock LEGACY_LOCK = new ReentrantLock();
 191
 192         @Override
 193         public Lock acquire() {
 194             LEGACY_LOCK.lock();
 195             return LEGACY_LOCK::unlock;
 196         }
 197     };
 198
 199     Manager(
 200             SignalAccount account,
 201             PathConfig pathConfig,
 202             ServiceEnvironmentConfig serviceEnvironmentConfig,
 203             String userAgent
 204     ) {
 205         this.account = account;
 206         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 207
 208         final var credentialsProvider = new DynamicCredentialsProvider(account.getUuid(),
 209                 account.getUsername(),
 210                 account.getPassword(),
 211                 account.getDeviceId());
 212         this.dependencies = new SignalDependencies(account.getSelfAddress(),
 213                 serviceEnvironmentConfig,
 214                 userAgent,
 215                 credentialsProvider,
 216                 account.getSignalProtocolStore(),
 217                 executor,
 218                 sessionLock);
 219         this.pinHelper = new PinHelper(dependencies.getKeyBackupService());
 220
 221         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 222                 account.getProfileStore()::getProfileKey,
 223                 this::getRecipientProfile,
 224                 this::getSenderCertificate);
 225         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 226                 unidentifiedAccessHelper::getAccessFor,
 227                 dependencies::getProfileService,
 228                 dependencies::getMessageReceiver,
 229                 this::resolveSignalServiceAddress);
 230         this.groupV2Helper = new GroupV2Helper(this::getRecipientProfileKeyCredential,
 231                 this::getRecipientProfile,
 232                 account::getSelfRecipientId,
 233                 dependencies.getGroupsV2Operations(),
 234                 dependencies.getGroupsV2Api(),
 235                 this::getGroupAuthForToday,
 236                 this::resolveSignalServiceAddress);
 237         this.avatarStore = new AvatarStore(pathConfig.getAvatarsPath());
 238         this.attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
 239         this.stickerPackStore = new StickerPackStore(pathConfig.getStickerPacksPath());
 240     }
 241
 242     public String getUsername() {
 243         return account.getUsername();
 244     }
 245
 246     public SignalServiceAddress getSelfAddress() {
 247         return account.getSelfAddress();
 248     }
 249
 250     public RecipientId getSelfRecipientId() {
 251         return account.getSelfRecipientId();
 252     }
 253
 254     private IdentityKeyPair getIdentityKeyPair() {
 255         return account.getIdentityKeyPair();
 256     }
 257
 258     public int getDeviceId() {
 259         return account.getDeviceId();
 260     }
 261
 262     public static Manager init(
 263             String username, File settingsPath, ServiceEnvironment serviceEnvironment, String userAgent
 264     ) throws IOException, NotRegisteredException {
 265         var pathConfig = PathConfig.createDefault(settingsPath);
 266
 267         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 268             throw new NotRegisteredException();
 269         }
 270
 271         var account = SignalAccount.load(pathConfig.getDataPath(), username, true);
 272
 273         if (!account.isRegistered()) {
 274             throw new NotRegisteredException();
 275         }
 276
 277         final var serviceEnvironmentConfig = ServiceConfig.getServiceEnvironmentConfig(serviceEnvironment, userAgent);
 278
 279         return new Manager(account, pathConfig, serviceEnvironmentConfig, userAgent);
 280     }
 281
 282     public static List<String> getAllLocalUsernames(File settingsPath) {
 283         var pathConfig = PathConfig.createDefault(settingsPath);
 284         final var dataPath = pathConfig.getDataPath();
 285         final var files = dataPath.listFiles();
 286
 287         if (files == null) {
 288             return List.of();
 289         }
 290
 291         return Arrays.stream(files)
 292                 .filter(File::isFile)
 293                 .map(File::getName)
 294                 .filter(file -> PhoneNumberFormatter.isValidNumber(file, null))
 295                 .collect(Collectors.toList());
 296     }
 297
 298     public void checkAccountState() throws IOException {
 299         if (account.getLastReceiveTimestamp() == 0) {
 300             logger.warn("The Signal protocol expects that incoming messages are regularly received.");
 301         } else {
 302             var diffInMilliseconds = System.currentTimeMillis() - account.getLastReceiveTimestamp();
 303             long days = TimeUnit.DAYS.convert(diffInMilliseconds, TimeUnit.MILLISECONDS);
 304             if (days > 7) {
 305                 logger.warn(
 306                         "Messages have been last received {} days ago. The Signal protocol expects that incoming messages are regularly received.",
 307                         days);
 308             }
 309         }
 310         if (dependencies.getAccountManager().getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 311             refreshPreKeys();
 312         }
 313         if (account.getUuid() == null) {
 314             account.setUuid(dependencies.getAccountManager().getOwnUuid());
 315         }
 316         updateAccountAttributes();
 317     }
 318
 319     /**
 320      * This is used for checking a set of phone numbers for registration on Signal
 321      *
 322      * @param numbers The set of phone number in question
 323      * @return A map of numbers to booleans. True if registered, false otherwise. Should never be null
 324      * @throws IOException if its unable to get the contacts to check if they're registered
 325      */
 326     public Map<String, Boolean> areUsersRegistered(Set<String> numbers) throws IOException {
 327         // Note "contactDetails" has no optionals. It only gives us info on users who are registered
 328         var contactDetails = getRegisteredUsers(numbers);
 329
 330         var registeredUsers = contactDetails.keySet();
 331
 332         return numbers.stream().collect(Collectors.toMap(x -> x, registeredUsers::contains));
 333     }
 334
 335     public void updateAccountAttributes() throws IOException {
 336         dependencies.getAccountManager()
 337                 .setAccountAttributes(account.getEncryptedDeviceName(),
 338                         null,
 339                         account.getLocalRegistrationId(),
 340                         true,
 341                         // set legacy pin only if no KBS master key is set
 342                         account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
 343                         account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 344                         account.getSelfUnidentifiedAccessKey(),
 345                         account.isUnrestrictedUnidentifiedAccess(),
 346                         capabilities,
 347                         account.isDiscoverableByPhoneNumber());
 348     }
 349
 350     /**
 351      * @param givenName  if null, the previous givenName will be kept
 352      * @param familyName if null, the previous familyName will be kept
 353      * @param about      if null, the previous about text will be kept
 354      * @param aboutEmoji if null, the previous about emoji will be kept
 355      * @param avatar     if avatar is null the image from the local avatar store is used (if present),
 356      */
 357     public void setProfile(
 358             String givenName, final String familyName, String about, String aboutEmoji, Optional<File> avatar
 359     ) throws IOException {
 360         var profile = getRecipientProfile(account.getSelfRecipientId());
 361         var builder = profile == null ? Profile.newBuilder() : Profile.newBuilder(profile);
 362         if (givenName != null) {
 363             builder.withGivenName(givenName);
 364         }
 365         if (familyName != null) {
 366             builder.withFamilyName(familyName);
 367         }
 368         if (about != null) {
 369             builder.withAbout(about);
 370         }
 371         if (aboutEmoji != null) {
 372             builder.withAboutEmoji(aboutEmoji);
 373         }
 374         var newProfile = builder.build();
 375
 376         try (final var streamDetails = avatar == null
 377                 ? avatarStore.retrieveProfileAvatar(getSelfAddress())
 378                 : avatar.isPresent() ? Utils.createStreamDetailsFromFile(avatar.get()) : null) {
 379             dependencies.getAccountManager()
 380                     .setVersionedProfile(account.getUuid(),
 381                             account.getProfileKey(),
 382                             newProfile.getInternalServiceName(),
 383                             newProfile.getAbout() == null ? "" : newProfile.getAbout(),
 384                             newProfile.getAboutEmoji() == null ? "" : newProfile.getAboutEmoji(),
 385                             Optional.absent(),
 386                             streamDetails);
 387         }
 388
 389         if (avatar != null) {
 390             if (avatar.isPresent()) {
 391                 avatarStore.storeProfileAvatar(getSelfAddress(),
 392                         outputStream -> IOUtils.copyFileToStream(avatar.get(), outputStream));
 393             } else {
 394                 avatarStore.deleteProfileAvatar(getSelfAddress());
 395             }
 396         }
 397         account.getProfileStore().storeProfile(account.getSelfRecipientId(), newProfile);
 398
 399         try {
 400             sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
 401         } catch (UntrustedIdentityException ignored) {
 402         }
 403     }
 404
 405     public void unregister() throws IOException {
 406         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 407         // If this is the master device, other users can't send messages to this number anymore.
 408         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 409         dependencies.getAccountManager().setGcmId(Optional.absent());
 410
 411         account.setRegistered(false);
 412     }
 413
 414     public void deleteAccount() throws IOException {
 415         dependencies.getAccountManager().deleteAccount();
 416
 417         account.setRegistered(false);
 418     }
 419
 420     public List<Device> getLinkedDevices() throws IOException {
 421         var devices = dependencies.getAccountManager().getDevices();
 422         account.setMultiDevice(devices.size() > 1);
 423         var identityKey = account.getIdentityKeyPair().getPrivateKey();
 424         return devices.stream().map(d -> {
 425             String deviceName = d.getName();
 426             if (deviceName != null) {
 427                 try {
 428                     deviceName = DeviceNameUtil.decryptDeviceName(deviceName, identityKey);
 429                 } catch (IOException e) {
 430                     logger.debug("Failed to decrypt device name, maybe plain text?", e);
 431                 }
 432             }
 433             return new Device(d.getId(), deviceName, d.getCreated(), d.getLastSeen());
 434         }).collect(Collectors.toList());
 435     }
 436
 437     public void removeLinkedDevices(int deviceId) throws IOException {
 438         dependencies.getAccountManager().removeDevice(deviceId);
 439         var devices = dependencies.getAccountManager().getDevices();
 440         account.setMultiDevice(devices.size() > 1);
 441     }
 442
 443     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 444         var info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 445
 446         addDevice(info.deviceIdentifier, info.deviceKey);
 447     }
 448
 449     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 450         var identityKeyPair = getIdentityKeyPair();
 451         var verificationCode = dependencies.getAccountManager().getNewDeviceVerificationCode();
 452
 453         dependencies.getAccountManager()
 454                 .addDevice(deviceIdentifier,
 455                         deviceKey,
 456                         identityKeyPair,
 457                         Optional.of(account.getProfileKey().serialize()),
 458                         verificationCode);
 459         account.setMultiDevice(true);
 460     }
 461
 462     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 463         if (!account.isMasterDevice()) {
 464             throw new RuntimeException("Only master device can set a PIN");
 465         }
 466         if (pin.isPresent()) {
 467             final var masterKey = account.getPinMasterKey() != null
 468                     ? account.getPinMasterKey()
 469                     : KeyUtils.createMasterKey();
 470
 471             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 472
 473             account.setRegistrationLockPin(pin.get(), masterKey);
 474         } else {
 475             // Remove KBS Pin
 476             pinHelper.removeRegistrationLockPin();
 477
 478             account.setRegistrationLockPin(null, null);
 479         }
 480     }
 481
 482     void refreshPreKeys() throws IOException {
 483         var oneTimePreKeys = generatePreKeys();
 484         final var identityKeyPair = getIdentityKeyPair();
 485         var signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 486
 487         dependencies.getAccountManager().setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 488     }
 489
 490     private List<PreKeyRecord> generatePreKeys() {
 491         final var offset = account.getPreKeyIdOffset();
 492
 493         var records = KeyUtils.generatePreKeyRecords(offset, ServiceConfig.PREKEY_BATCH_SIZE);
 494         account.addPreKeys(records);
 495
 496         return records;
 497     }
 498
 499     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 500         final var signedPreKeyId = account.getNextSignedPreKeyId();
 501
 502         var record = KeyUtils.generateSignedPreKeyRecord(identityKeyPair, signedPreKeyId);
 503         account.addSignedPreKey(record);
 504
 505         return record;
 506     }
 507
 508     public Profile getRecipientProfile(
 509             RecipientId recipientId
 510     ) {
 511         return getRecipientProfile(recipientId, false);
 512     }
 513
 514     private final Set<RecipientId> pendingProfileRequest = new HashSet<>();
 515
 516     Profile getRecipientProfile(
 517             RecipientId recipientId, boolean force
 518     ) {
 519         var profile = account.getProfileStore().getProfile(recipientId);
 520
 521         var now = System.currentTimeMillis();
 522         // Profiles are cached for 24h before retrieving them again, unless forced
 523         if (!force && profile != null && now - profile.getLastUpdateTimestamp() < 24 * 60 * 60 * 1000) {
 524             return profile;
 525         }
 526
 527         synchronized (pendingProfileRequest) {
 528             if (pendingProfileRequest.contains(recipientId)) {
 529                 return profile;
 530             }
 531             pendingProfileRequest.add(recipientId);
 532         }
 533         final SignalServiceProfile encryptedProfile;
 534         try {
 535             encryptedProfile = retrieveEncryptedProfile(recipientId);
 536         } finally {
 537             synchronized (pendingProfileRequest) {
 538                 pendingProfileRequest.remove(recipientId);
 539             }
 540         }
 541         if (encryptedProfile == null) {
 542             return null;
 543         }
 544
 545         profile = decryptProfileIfKeyKnown(recipientId, encryptedProfile);
 546         account.getProfileStore().storeProfile(recipientId, profile);
 547
 548         return profile;
 549     }
 550
 551     private Profile decryptProfileIfKeyKnown(
 552             final RecipientId recipientId, final SignalServiceProfile encryptedProfile
 553     ) {
 554         var profileKey = account.getProfileStore().getProfileKey(recipientId);
 555         if (profileKey == null) {
 556             return new Profile(System.currentTimeMillis(),
 557                     null,
 558                     null,
 559                     null,
 560                     null,
 561                     ProfileUtils.getUnidentifiedAccessMode(encryptedProfile, null),
 562                     ProfileUtils.getCapabilities(encryptedProfile));
 563         }
 564
 565         return decryptProfileAndDownloadAvatar(recipientId, profileKey, encryptedProfile);
 566     }
 567
 568     private SignalServiceProfile retrieveEncryptedProfile(RecipientId recipientId) {
 569         try {
 570             return retrieveProfileAndCredential(recipientId, SignalServiceProfile.RequestType.PROFILE).getProfile();
 571         } catch (IOException e) {
 572             logger.warn("Failed to retrieve profile, ignoring: {}", e.getMessage());
 573             return null;
 574         }
 575     }
 576
 577     private ProfileAndCredential retrieveProfileAndCredential(
 578             final RecipientId recipientId, final SignalServiceProfile.RequestType requestType
 579     ) throws IOException {
 580         final var profileAndCredential = profileHelper.retrieveProfileSync(recipientId, requestType);
 581         final var profile = profileAndCredential.getProfile();
 582
 583         try {
 584             var newIdentity = account.getIdentityKeyStore()
 585                     .saveIdentity(recipientId,
 586                             new IdentityKey(Base64.getDecoder().decode(profile.getIdentityKey())),
 587                             new Date());
 588
 589             if (newIdentity) {
 590                 account.getSessionStore().archiveSessions(recipientId);
 591             }
 592         } catch (InvalidKeyException ignored) {
 593             logger.warn("Got invalid identity key in profile for {}",
 594                     resolveSignalServiceAddress(recipientId).getIdentifier());
 595         }
 596         return profileAndCredential;
 597     }
 598
 599     private ProfileKeyCredential getRecipientProfileKeyCredential(RecipientId recipientId) {
 600         var profileKeyCredential = account.getProfileStore().getProfileKeyCredential(recipientId);
 601         if (profileKeyCredential != null) {
 602             return profileKeyCredential;
 603         }
 604
 605         ProfileAndCredential profileAndCredential;
 606         try {
 607             profileAndCredential = retrieveProfileAndCredential(recipientId,
 608                     SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 609         } catch (IOException e) {
 610             logger.warn("Failed to retrieve profile key credential, ignoring: {}", e.getMessage());
 611             return null;
 612         }
 613
 614         profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 615         account.getProfileStore().storeProfileKeyCredential(recipientId, profileKeyCredential);
 616
 617         var profileKey = account.getProfileStore().getProfileKey(recipientId);
 618         if (profileKey != null) {
 619             final var profile = decryptProfileAndDownloadAvatar(recipientId,
 620                     profileKey,
 621                     profileAndCredential.getProfile());
 622             account.getProfileStore().storeProfile(recipientId, profile);
 623         }
 624
 625         return profileKeyCredential;
 626     }
 627
 628     private Profile decryptProfileAndDownloadAvatar(
 629             final RecipientId recipientId, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 630     ) {
 631         if (encryptedProfile.getAvatar() != null) {
 632             downloadProfileAvatar(resolveSignalServiceAddress(recipientId), encryptedProfile.getAvatar(), profileKey);
 633         }
 634
 635         return ProfileUtils.decryptProfile(profileKey, encryptedProfile);
 636     }
 637
 638     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(GroupId groupId) throws IOException {
 639         final var streamDetails = avatarStore.retrieveGroupAvatar(groupId);
 640         if (streamDetails == null) {
 641             return Optional.absent();
 642         }
 643
 644         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 645     }
 646
 647     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(SignalServiceAddress address) throws IOException {
 648         final var streamDetails = avatarStore.retrieveContactAvatar(address);
 649         if (streamDetails == null) {
 650             return Optional.absent();
 651         }
 652
 653         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 654     }
 655
 656     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 657         var g = getGroup(groupId);
 658         if (g == null) {
 659             throw new GroupNotFoundException(groupId);
 660         }
 661         if (!g.isMember(account.getSelfRecipientId())) {
 662             throw new NotAGroupMemberException(groupId, g.getTitle());
 663         }
 664         return g;
 665     }
 666
 667     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 668         var g = getGroup(groupId);
 669         if (g == null) {
 670             throw new GroupNotFoundException(groupId);
 671         }
 672         if (!g.isMember(account.getSelfRecipientId()) && !g.isPendingMember(account.getSelfRecipientId())) {
 673             throw new NotAGroupMemberException(groupId, g.getTitle());
 674         }
 675         return g;
 676     }
 677
 678     public List<GroupInfo> getGroups() {
 679         return account.getGroupStore().getGroups();
 680     }
 681
 682     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 683             String messageText, List<String> attachments, GroupId groupId
 684     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 685         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 686         if (attachments != null) {
 687             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 688         }
 689
 690         return sendGroupMessage(messageBuilder, groupId);
 691     }
 692
 693     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 694             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, GroupId groupId
 695     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 696         var targetAuthorRecipientId = canonicalizeAndResolveRecipient(targetAuthor);
 697         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 698                 remove,
 699                 resolveSignalServiceAddress(targetAuthorRecipientId),
 700                 targetSentTimestamp);
 701         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
 702
 703         return sendGroupMessage(messageBuilder, groupId);
 704     }
 705
 706     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 707             SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
 708     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 709         final var g = getGroupForSending(groupId);
 710
 711         GroupUtils.setGroupContext(messageBuilder, g);
 712         messageBuilder.withExpiration(g.getMessageExpirationTime());
 713
 714         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfRecipientId()));
 715     }
 716
 717     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(
 718             GroupId groupId, Set<String> groupAdmins
 719     ) throws GroupNotFoundException, IOException, NotAGroupMemberException, InvalidNumberException, LastGroupAdminException {
 720         var group = getGroupForUpdating(groupId);
 721         if (group instanceof GroupInfoV1) {
 722             return quitGroupV1((GroupInfoV1) group);
 723         }
 724
 725         final var newAdmins = getSignalServiceAddresses(groupAdmins);
 726         try {
 727             return quitGroupV2((GroupInfoV2) group, newAdmins);
 728         } catch (ConflictException e) {
 729             // Detected conflicting update, refreshing group and trying again
 730             group = getGroup(groupId, true);
 731             return quitGroupV2((GroupInfoV2) group, newAdmins);
 732         }
 733     }
 734
 735     private Pair<Long, List<SendMessageResult>> quitGroupV1(final GroupInfoV1 groupInfoV1) throws IOException {
 736         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 737                 .withId(groupInfoV1.getGroupId().serialize())
 738                 .build();
 739
 740         var messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 741         groupInfoV1.removeMember(account.getSelfRecipientId());
 742         account.getGroupStore().updateGroup(groupInfoV1);
 743         return sendMessage(messageBuilder, groupInfoV1.getMembersWithout(account.getSelfRecipientId()));
 744     }
 745
 746     private Pair<Long, List<SendMessageResult>> quitGroupV2(
 747             final GroupInfoV2 groupInfoV2, final Set<RecipientId> newAdmins
 748     ) throws LastGroupAdminException, IOException {
 749         final var currentAdmins = groupInfoV2.getAdminMembers();
 750         newAdmins.removeAll(currentAdmins);
 751         newAdmins.retainAll(groupInfoV2.getMembers());
 752         if (currentAdmins.contains(getSelfRecipientId())
 753                 && currentAdmins.size() == 1
 754                 && groupInfoV2.getMembers().size() > 1
 755                 && newAdmins.size() == 0) {
 756             // Last admin can't leave the group, unless she's also the last member
 757             throw new LastGroupAdminException(groupInfoV2.getGroupId(), groupInfoV2.getTitle());
 758         }
 759         final var groupGroupChangePair = groupV2Helper.leaveGroup(groupInfoV2, newAdmins);
 760         groupInfoV2.setGroup(groupGroupChangePair.first(), this::resolveRecipient);
 761         var messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 762         account.getGroupStore().updateGroup(groupInfoV2);
 763         return sendMessage(messageBuilder, groupInfoV2.getMembersWithout(account.getSelfRecipientId()));
 764     }
 765
 766     public void deleteGroup(GroupId groupId) throws IOException {
 767         account.getGroupStore().deleteGroup(groupId);
 768         avatarStore.deleteGroupAvatar(groupId);
 769     }
 770
 771     public Pair<GroupId, List<SendMessageResult>> createGroup(
 772             String name, List<String> members, File avatarFile
 773     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
 774         return createGroup(name, members == null ? null : getSignalServiceAddresses(members), avatarFile);
 775     }
 776
 777     private Pair<GroupId, List<SendMessageResult>> createGroup(
 778             String name, Set<RecipientId> members, File avatarFile
 779     ) throws IOException, AttachmentInvalidException {
 780         final var selfRecipientId = account.getSelfRecipientId();
 781         if (members != null && members.contains(selfRecipientId)) {
 782             members = new HashSet<>(members);
 783             members.remove(selfRecipientId);
 784         }
 785
 786         var gv2Pair = groupV2Helper.createGroup(name == null ? "" : name,
 787                 members == null ? Set.of() : members,
 788                 avatarFile);
 789
 790         SignalServiceDataMessage.Builder messageBuilder;
 791         if (gv2Pair == null) {
 792             // Failed to create v2 group, creating v1 group instead
 793             var gv1 = new GroupInfoV1(GroupIdV1.createRandom());
 794             gv1.addMembers(List.of(selfRecipientId));
 795             final var result = updateGroupV1(gv1, name, members, avatarFile);
 796             return new Pair<>(gv1.getGroupId(), result.second());
 797         }
 798
 799         final var gv2 = gv2Pair.first();
 800         final var decryptedGroup = gv2Pair.second();
 801
 802         gv2.setGroup(decryptedGroup, this::resolveRecipient);
 803         if (avatarFile != null) {
 804             avatarStore.storeGroupAvatar(gv2.getGroupId(),
 805                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 806         }
 807         messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 808         account.getGroupStore().updateGroup(gv2);
 809
 810         final var result = sendMessage(messageBuilder, gv2.getMembersIncludingPendingWithout(selfRecipientId));
 811         return new Pair<>(gv2.getGroupId(), result.second());
 812     }
 813
 814     public Pair<Long, List<SendMessageResult>> updateGroup(
 815             GroupId groupId,
 816             String name,
 817             String description,
 818             List<String> members,
 819             List<String> removeMembers,
 820             List<String> admins,
 821             List<String> removeAdmins,
 822             boolean resetGroupLink,
 823             GroupLinkState groupLinkState,
 824             GroupPermission addMemberPermission,
 825             GroupPermission editDetailsPermission,
 826             File avatarFile,
 827             Integer expirationTimer
 828     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 829         return updateGroup(groupId,
 830                 name,
 831                 description,
 832                 members == null ? null : getSignalServiceAddresses(members),
 833                 removeMembers == null ? null : getSignalServiceAddresses(removeMembers),
 834                 admins == null ? null : getSignalServiceAddresses(admins),
 835                 removeAdmins == null ? null : getSignalServiceAddresses(removeAdmins),
 836                 resetGroupLink,
 837                 groupLinkState,
 838                 addMemberPermission,
 839                 editDetailsPermission,
 840                 avatarFile,
 841                 expirationTimer);
 842     }
 843
 844     private Pair<Long, List<SendMessageResult>> updateGroup(
 845             final GroupId groupId,
 846             final String name,
 847             final String description,
 848             final Set<RecipientId> members,
 849             final Set<RecipientId> removeMembers,
 850             final Set<RecipientId> admins,
 851             final Set<RecipientId> removeAdmins,
 852             final boolean resetGroupLink,
 853             final GroupLinkState groupLinkState,
 854             final GroupPermission addMemberPermission,
 855             final GroupPermission editDetailsPermission,
 856             final File avatarFile,
 857             final Integer expirationTimer
 858     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 859         var group = getGroupForUpdating(groupId);
 860
 861         if (group instanceof GroupInfoV2) {
 862             try {
 863                 return updateGroupV2((GroupInfoV2) group,
 864                         name,
 865                         description,
 866                         members,
 867                         removeMembers,
 868                         admins,
 869                         removeAdmins,
 870                         resetGroupLink,
 871                         groupLinkState,
 872                         addMemberPermission,
 873                         editDetailsPermission,
 874                         avatarFile,
 875                         expirationTimer);
 876             } catch (ConflictException e) {
 877                 // Detected conflicting update, refreshing group and trying again
 878                 group = getGroup(groupId, true);
 879                 return updateGroupV2((GroupInfoV2) group,
 880                         name,
 881                         description,
 882                         members,
 883                         removeMembers,
 884                         admins,
 885                         removeAdmins,
 886                         resetGroupLink,
 887                         groupLinkState,
 888                         addMemberPermission,
 889                         editDetailsPermission,
 890                         avatarFile,
 891                         expirationTimer);
 892             }
 893         }
 894
 895         final var gv1 = (GroupInfoV1) group;
 896         final var result = updateGroupV1(gv1, name, members, avatarFile);
 897         if (expirationTimer != null) {
 898             setExpirationTimer(gv1, expirationTimer);
 899         }
 900         return result;
 901     }
 902
 903     private Pair<Long, List<SendMessageResult>> updateGroupV1(
 904             final GroupInfoV1 gv1, final String name, final Set<RecipientId> members, final File avatarFile
 905     ) throws IOException, AttachmentInvalidException {
 906         updateGroupV1Details(gv1, name, members, avatarFile);
 907         var messageBuilder = getGroupUpdateMessageBuilder(gv1);
 908
 909         account.getGroupStore().updateGroup(gv1);
 910
 911         return sendMessage(messageBuilder, gv1.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 912     }
 913
 914     private void updateGroupV1Details(
 915             final GroupInfoV1 g, final String name, final Collection<RecipientId> members, final File avatarFile
 916     ) throws IOException {
 917         if (name != null) {
 918             g.name = name;
 919         }
 920
 921         if (members != null) {
 922             final var newMemberAddresses = members.stream()
 923                     .filter(member -> !g.isMember(member))
 924                     .map(this::resolveSignalServiceAddress)
 925                     .collect(Collectors.toList());
 926             final var newE164Members = new HashSet<String>();
 927             for (var member : newMemberAddresses) {
 928                 if (!member.getNumber().isPresent()) {
 929                     continue;
 930                 }
 931                 newE164Members.add(member.getNumber().get());
 932             }
 933
 934             final var registeredUsers = getRegisteredUsers(newE164Members);
 935             if (registeredUsers.size() != newE164Members.size()) {
 936                 // Some of the new members are not registered on Signal
 937                 newE164Members.removeAll(registeredUsers.keySet());
 938                 throw new IOException("Failed to add members "
 939                         + String.join(", ", newE164Members)
 940                         + " to group: Not registered on Signal");
 941             }
 942
 943             g.addMembers(members);
 944         }
 945
 946         if (avatarFile != null) {
 947             avatarStore.storeGroupAvatar(g.getGroupId(),
 948                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 949         }
 950     }
 951
 952     private Pair<Long, List<SendMessageResult>> updateGroupV2(
 953             final GroupInfoV2 group,
 954             final String name,
 955             final String description,
 956             final Set<RecipientId> members,
 957             final Set<RecipientId> removeMembers,
 958             final Set<RecipientId> admins,
 959             final Set<RecipientId> removeAdmins,
 960             final boolean resetGroupLink,
 961             final GroupLinkState groupLinkState,
 962             final GroupPermission addMemberPermission,
 963             final GroupPermission editDetailsPermission,
 964             final File avatarFile,
 965             Integer expirationTimer
 966     ) throws IOException {
 967         Pair<Long, List<SendMessageResult>> result = null;
 968         if (group.isPendingMember(account.getSelfRecipientId())) {
 969             var groupGroupChangePair = groupV2Helper.acceptInvite(group);
 970             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 971         }
 972
 973         if (members != null) {
 974             final var newMembers = new HashSet<>(members);
 975             newMembers.removeAll(group.getMembers());
 976             if (newMembers.size() > 0) {
 977                 var groupGroupChangePair = groupV2Helper.addMembers(group, newMembers);
 978                 result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 979             }
 980         }
 981
 982         if (removeMembers != null) {
 983             var existingRemoveMembers = new HashSet<>(removeMembers);
 984             existingRemoveMembers.retainAll(group.getMembers());
 985             existingRemoveMembers.remove(getSelfRecipientId());// self can be removed with sendQuitGroupMessage
 986             if (existingRemoveMembers.size() > 0) {
 987                 var groupGroupChangePair = groupV2Helper.removeMembers(group, existingRemoveMembers);
 988                 result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 989             }
 990
 991             var pendingRemoveMembers = new HashSet<>(removeMembers);
 992             pendingRemoveMembers.retainAll(group.getPendingMembers());
 993             if (pendingRemoveMembers.size() > 0) {
 994                 var groupGroupChangePair = groupV2Helper.revokeInvitedMembers(group, pendingRemoveMembers);
 995                 result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
 996             }
 997         }
 998
 999         if (admins != null) {
1000             final var newAdmins = new HashSet<>(admins);
1001             newAdmins.retainAll(group.getMembers());
1002             newAdmins.removeAll(group.getAdminMembers());
1003             if (newAdmins.size() > 0) {
1004                 for (var admin : newAdmins) {
1005                     var groupGroupChangePair = groupV2Helper.setMemberAdmin(group, admin, true);
1006                     result = sendUpdateGroupV2Message(group,
1007                             groupGroupChangePair.first(),
1008                             groupGroupChangePair.second());
1009                 }
1010             }
1011         }
1012
1013         if (removeAdmins != null) {
1014             final var existingRemoveAdmins = new HashSet<>(removeAdmins);
1015             existingRemoveAdmins.retainAll(group.getAdminMembers());
1016             if (existingRemoveAdmins.size() > 0) {
1017                 for (var admin : existingRemoveAdmins) {
1018                     var groupGroupChangePair = groupV2Helper.setMemberAdmin(group, admin, false);
1019                     result = sendUpdateGroupV2Message(group,
1020                             groupGroupChangePair.first(),
1021                             groupGroupChangePair.second());
1022                 }
1023             }
1024         }
1025
1026         if (resetGroupLink) {
1027             var groupGroupChangePair = groupV2Helper.resetGroupLinkPassword(group);
1028             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1029         }
1030
1031         if (groupLinkState != null) {
1032             var groupGroupChangePair = groupV2Helper.setGroupLinkState(group, groupLinkState);
1033             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1034         }
1035
1036         if (addMemberPermission != null) {
1037             var groupGroupChangePair = groupV2Helper.setAddMemberPermission(group, addMemberPermission);
1038             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1039         }
1040
1041         if (editDetailsPermission != null) {
1042             var groupGroupChangePair = groupV2Helper.setEditDetailsPermission(group, editDetailsPermission);
1043             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1044         }
1045
1046         if (expirationTimer != null) {
1047             var groupGroupChangePair = groupV2Helper.setMessageExpirationTimer(group, expirationTimer);
1048             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1049         }
1050
1051         if (name != null || description != null || avatarFile != null) {
1052             var groupGroupChangePair = groupV2Helper.updateGroup(group, name, description, avatarFile);
1053             if (avatarFile != null) {
1054                 avatarStore.storeGroupAvatar(group.getGroupId(),
1055                         outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
1056             }
1057             result = sendUpdateGroupV2Message(group, groupGroupChangePair.first(), groupGroupChangePair.second());
1058         }
1059
1060         return result;
1061     }
1062
1063     public Pair<GroupId, List<SendMessageResult>> joinGroup(
1064             GroupInviteLinkUrl inviteLinkUrl
1065     ) throws IOException, GroupLinkNotActiveException {
1066         final var groupJoinInfo = groupV2Helper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
1067                 inviteLinkUrl.getPassword());
1068         final var groupChange = groupV2Helper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
1069                 inviteLinkUrl.getPassword(),
1070                 groupJoinInfo);
1071         final var group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
1072                 groupJoinInfo.getRevision() + 1,
1073                 groupChange.toByteArray());
1074
1075         if (group.getGroup() == null) {
1076             // Only requested member, can't send update to group members
1077             return new Pair<>(group.getGroupId(), List.of());
1078         }
1079
1080         final var result = sendUpdateGroupV2Message(group, group.getGroup(), groupChange);
1081
1082         return new Pair<>(group.getGroupId(), result.second());
1083     }
1084
1085     private Pair<Long, List<SendMessageResult>> sendUpdateGroupV2Message(
1086             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
1087     ) throws IOException {
1088         final var selfRecipientId = account.getSelfRecipientId();
1089         final var members = group.getMembersIncludingPendingWithout(selfRecipientId);
1090         group.setGroup(newDecryptedGroup, this::resolveRecipient);
1091         members.addAll(group.getMembersIncludingPendingWithout(selfRecipientId));
1092
1093         final var messageBuilder = getGroupUpdateMessageBuilder(group, groupChange.toByteArray());
1094         account.getGroupStore().updateGroup(group);
1095         return sendMessage(messageBuilder, members);
1096     }
1097
1098     private static int currentTimeDays() {
1099         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
1100     }
1101
1102     private GroupsV2AuthorizationString getGroupAuthForToday(
1103             final GroupSecretParams groupSecretParams
1104     ) throws IOException {
1105         final var today = currentTimeDays();
1106         // Returns credentials for the next 7 days
1107         final var credentials = dependencies.getGroupsV2Api().getCredentials(today);
1108         // TODO cache credentials until they expire
1109         var authCredentialResponse = credentials.get(today);
1110         try {
1111             return dependencies.getGroupsV2Api()
1112                     .getGroupsV2AuthorizationString(account.getUuid(),
1113                             today,
1114                             groupSecretParams,
1115                             authCredentialResponse);
1116         } catch (VerificationFailedException e) {
1117             throw new IOException(e);
1118         }
1119     }
1120
1121     Pair<Long, List<SendMessageResult>> sendGroupInfoMessage(
1122             GroupIdV1 groupId, SignalServiceAddress recipient
1123     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
1124         GroupInfoV1 g;
1125         var group = getGroupForSending(groupId);
1126         if (!(group instanceof GroupInfoV1)) {
1127             throw new RuntimeException("Received an invalid group request for a v2 group!");
1128         }
1129         g = (GroupInfoV1) group;
1130
1131         final var recipientId = resolveRecipient(recipient);
1132         if (!g.isMember(recipientId)) {
1133             throw new NotAGroupMemberException(groupId, g.name);
1134         }
1135
1136         var messageBuilder = getGroupUpdateMessageBuilder(g);
1137
1138         // Send group message only to the recipient who requested it
1139         return sendMessage(messageBuilder, Set.of(recipientId));
1140     }
1141
1142     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
1143         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
1144                 .withId(g.getGroupId().serialize())
1145                 .withName(g.name)
1146                 .withMembers(g.getMembers()
1147                         .stream()
1148                         .map(this::resolveSignalServiceAddress)
1149                         .collect(Collectors.toList()));
1150
1151         try {
1152             final var attachment = createGroupAvatarAttachment(g.getGroupId());
1153             if (attachment.isPresent()) {
1154                 group.withAvatar(attachment.get());
1155             }
1156         } catch (IOException e) {
1157             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
1158         }
1159
1160         return SignalServiceDataMessage.newBuilder()
1161                 .asGroupMessage(group.build())
1162                 .withExpiration(g.getMessageExpirationTime());
1163     }
1164
1165     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
1166         var group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
1167                 .withRevision(g.getGroup().getRevision())
1168                 .withSignedGroupChange(signedGroupChange);
1169         return SignalServiceDataMessage.newBuilder()
1170                 .asGroupMessage(group.build())
1171                 .withExpiration(g.getMessageExpirationTime());
1172     }
1173
1174     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
1175             GroupIdV1 groupId, SignalServiceAddress recipient
1176     ) throws IOException {
1177         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO).withId(groupId.serialize());
1178
1179         var messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group.build());
1180
1181         // Send group info request message to the recipient who sent us a message with this groupId
1182         return sendMessage(messageBuilder, Set.of(resolveRecipient(recipient)));
1183     }
1184
1185     void sendReceipt(
1186             SignalServiceAddress remoteAddress, long messageId
1187     ) throws IOException, UntrustedIdentityException {
1188         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
1189                 List.of(messageId),
1190                 System.currentTimeMillis());
1191
1192         dependencies.getMessageSender()
1193                 .sendReceipt(remoteAddress,
1194                         unidentifiedAccessHelper.getAccessFor(resolveRecipient(remoteAddress)),
1195                         receiptMessage);
1196     }
1197
1198     public Pair<Long, List<SendMessageResult>> sendMessage(
1199             String messageText, List<String> attachments, List<String> recipients
1200     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
1201         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
1202         if (attachments != null) {
1203             var attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
1204
1205             // Upload attachments here, so we only upload once even for multiple recipients
1206             var messageSender = dependencies.getMessageSender();
1207             var attachmentPointers = new ArrayList<SignalServiceAttachment>(attachmentStreams.size());
1208             for (var attachment : attachmentStreams) {
1209                 if (attachment.isStream()) {
1210                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
1211                 } else if (attachment.isPointer()) {
1212                     attachmentPointers.add(attachment.asPointer());
1213                 }
1214             }
1215
1216             messageBuilder.withAttachments(attachmentPointers);
1217         }
1218         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1219     }
1220
1221     public Pair<Long, SendMessageResult> sendSelfMessage(
1222             String messageText, List<String> attachments
1223     ) throws IOException, AttachmentInvalidException {
1224         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
1225         if (attachments != null) {
1226             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
1227         }
1228         return sendSelfMessage(messageBuilder);
1229     }
1230
1231     public Pair<Long, List<SendMessageResult>> sendRemoteDeleteMessage(
1232             long targetSentTimestamp, List<String> recipients
1233     ) throws IOException, InvalidNumberException {
1234         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1235         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
1236         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1237     }
1238
1239     public Pair<Long, List<SendMessageResult>> sendGroupRemoteDeleteMessage(
1240             long targetSentTimestamp, GroupId groupId
1241     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1242         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1243         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
1244         return sendGroupMessage(messageBuilder, groupId);
1245     }
1246
1247     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
1248             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
1249     ) throws IOException, InvalidNumberException {
1250         var targetAuthorRecipientId = canonicalizeAndResolveRecipient(targetAuthor);
1251         var reaction = new SignalServiceDataMessage.Reaction(emoji,
1252                 remove,
1253                 resolveSignalServiceAddress(targetAuthorRecipientId),
1254                 targetSentTimestamp);
1255         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
1256         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1257     }
1258
1259     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1260         var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
1261
1262         final var signalServiceAddresses = getSignalServiceAddresses(recipients);
1263         try {
1264             return sendMessage(messageBuilder, signalServiceAddresses);
1265         } catch (Exception e) {
1266             for (var address : signalServiceAddresses) {
1267                 handleEndSession(address);
1268             }
1269             throw e;
1270         }
1271     }
1272
1273     void renewSession(RecipientId recipientId) throws IOException {
1274         account.getSessionStore().archiveSessions(recipientId);
1275         if (!recipientId.equals(getSelfRecipientId())) {
1276             sendNullMessage(recipientId);
1277         }
1278     }
1279
1280     public void setContactName(String number, String name) throws InvalidNumberException, NotMasterDeviceException {
1281         if (!account.isMasterDevice()) {
1282             throw new NotMasterDeviceException();
1283         }
1284         final var recipientId = canonicalizeAndResolveRecipient(number);
1285         var contact = account.getContactStore().getContact(recipientId);
1286         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1287         account.getContactStore().storeContact(recipientId, builder.withName(name).build());
1288     }
1289
1290     public void setContactBlocked(
1291             String number, boolean blocked
1292     ) throws InvalidNumberException, NotMasterDeviceException {
1293         if (!account.isMasterDevice()) {
1294             throw new NotMasterDeviceException();
1295         }
1296         setContactBlocked(canonicalizeAndResolveRecipient(number), blocked);
1297     }
1298
1299     private void setContactBlocked(RecipientId recipientId, boolean blocked) {
1300         var contact = account.getContactStore().getContact(recipientId);
1301         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1302         account.getContactStore().storeContact(recipientId, builder.withBlocked(blocked).build());
1303     }
1304
1305     public void setGroupBlocked(final GroupId groupId, final boolean blocked) throws GroupNotFoundException {
1306         var group = getGroup(groupId);
1307         if (group == null) {
1308             throw new GroupNotFoundException(groupId);
1309         }
1310
1311         group.setBlocked(blocked);
1312         account.getGroupStore().updateGroup(group);
1313     }
1314
1315     private void setExpirationTimer(RecipientId recipientId, int messageExpirationTimer) {
1316         var contact = account.getContactStore().getContact(recipientId);
1317         if (contact != null && contact.getMessageExpirationTime() == messageExpirationTimer) {
1318             return;
1319         }
1320         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1321         account.getContactStore()
1322                 .storeContact(recipientId, builder.withMessageExpirationTime(messageExpirationTimer).build());
1323     }
1324
1325     private void sendExpirationTimerUpdate(RecipientId recipientId) throws IOException {
1326         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
1327         sendMessage(messageBuilder, Set.of(recipientId));
1328     }
1329
1330     /**
1331      * Change the expiration timer for a contact
1332      */
1333     public void setExpirationTimer(
1334             String number, int messageExpirationTimer
1335     ) throws IOException, InvalidNumberException {
1336         var recipientId = canonicalizeAndResolveRecipient(number);
1337         setExpirationTimer(recipientId, messageExpirationTimer);
1338         sendExpirationTimerUpdate(recipientId);
1339     }
1340
1341     /**
1342      * Change the expiration timer for a group
1343      */
1344     private void setExpirationTimer(
1345             GroupInfoV1 groupInfoV1, int messageExpirationTimer
1346     ) throws NotAGroupMemberException, GroupNotFoundException, IOException {
1347         groupInfoV1.messageExpirationTime = messageExpirationTimer;
1348         account.getGroupStore().updateGroup(groupInfoV1);
1349         sendExpirationTimerUpdate(groupInfoV1.getGroupId());
1350     }
1351
1352     private void sendExpirationTimerUpdate(GroupIdV1 groupId) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1353         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
1354         sendGroupMessage(messageBuilder, groupId);
1355     }
1356
1357     /**
1358      * Upload the sticker pack from path.
1359      *
1360      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1361      * @return if successful, returns the URL to install the sticker pack in the signal app
1362      */
1363     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1364         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
1365
1366         var messageSender = dependencies.getMessageSender();
1367
1368         var packKey = KeyUtils.createStickerUploadKey();
1369         var packIdString = messageSender.uploadStickerManifest(manifest, packKey);
1370         var packId = StickerPackId.deserialize(Hex.fromStringCondensed(packIdString));
1371
1372         var sticker = new Sticker(packId, packKey);
1373         account.getStickerStore().updateSticker(sticker);
1374
1375         try {
1376             return new URI("https",
1377                     "signal.art",
1378                     "/addstickers/",
1379                     "pack_id="
1380                             + URLEncoder.encode(Hex.toStringCondensed(packId.serialize()), StandardCharsets.UTF_8)
1381                             + "&pack_key="
1382                             + URLEncoder.encode(Hex.toStringCondensed(packKey), StandardCharsets.UTF_8)).toString();
1383         } catch (URISyntaxException e) {
1384             throw new AssertionError(e);
1385         }
1386     }
1387
1388     public void requestAllSyncData() throws IOException {
1389         requestSyncGroups();
1390         requestSyncContacts();
1391         requestSyncBlocked();
1392         requestSyncConfiguration();
1393         requestSyncKeys();
1394     }
1395
1396     private void requestSyncGroups() throws IOException {
1397         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1398                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1399                 .build();
1400         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1401         try {
1402             sendSyncMessage(message);
1403         } catch (UntrustedIdentityException e) {
1404             throw new AssertionError(e);
1405         }
1406     }
1407
1408     private void requestSyncContacts() throws IOException {
1409         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1410                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1411                 .build();
1412         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1413         try {
1414             sendSyncMessage(message);
1415         } catch (UntrustedIdentityException e) {
1416             throw new AssertionError(e);
1417         }
1418     }
1419
1420     private void requestSyncBlocked() throws IOException {
1421         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1422                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1423                 .build();
1424         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1425         try {
1426             sendSyncMessage(message);
1427         } catch (UntrustedIdentityException e) {
1428             throw new AssertionError(e);
1429         }
1430     }
1431
1432     private void requestSyncConfiguration() throws IOException {
1433         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1434                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1435                 .build();
1436         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1437         try {
1438             sendSyncMessage(message);
1439         } catch (UntrustedIdentityException e) {
1440             throw new AssertionError(e);
1441         }
1442     }
1443
1444     private void requestSyncKeys() throws IOException {
1445         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1446                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
1447                 .build();
1448         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1449         try {
1450             sendSyncMessage(message);
1451         } catch (UntrustedIdentityException e) {
1452             throw new AssertionError(e);
1453         }
1454     }
1455
1456     private byte[] getSenderCertificate() {
1457         byte[] certificate;
1458         try {
1459             if (account.isPhoneNumberShared()) {
1460                 certificate = dependencies.getAccountManager().getSenderCertificate();
1461             } else {
1462                 certificate = dependencies.getAccountManager().getSenderCertificateForPhoneNumberPrivacy();
1463             }
1464         } catch (IOException e) {
1465             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1466             return null;
1467         }
1468         // TODO cache for a day
1469         return certificate;
1470     }
1471
1472     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1473         var messageSender = dependencies.getMessageSender();
1474         messageSender.sendSyncMessage(message, unidentifiedAccessHelper.getAccessForSync());
1475     }
1476
1477     private Set<RecipientId> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1478         final var signalServiceAddresses = new HashSet<SignalServiceAddress>(numbers.size());
1479         final var addressesMissingUuid = new HashSet<SignalServiceAddress>();
1480
1481         for (var number : numbers) {
1482             final var resolvedAddress = resolveSignalServiceAddress(canonicalizeAndResolveRecipient(number));
1483             if (resolvedAddress.getUuid().isPresent()) {
1484                 signalServiceAddresses.add(resolvedAddress);
1485             } else {
1486                 addressesMissingUuid.add(resolvedAddress);
1487             }
1488         }
1489
1490         final var numbersMissingUuid = addressesMissingUuid.stream()
1491                 .map(a -> a.getNumber().get())
1492                 .collect(Collectors.toSet());
1493         Map<String, UUID> registeredUsers;
1494         try {
1495             registeredUsers = getRegisteredUsers(numbersMissingUuid);
1496         } catch (IOException e) {
1497             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1498             registeredUsers = Map.of();
1499         }
1500
1501         for (var address : addressesMissingUuid) {
1502             final var number = address.getNumber().get();
1503             if (registeredUsers.containsKey(number)) {
1504                 final var newAddress = resolveSignalServiceAddress(resolveRecipientTrusted(new SignalServiceAddress(
1505                         registeredUsers.get(number),
1506                         number)));
1507                 signalServiceAddresses.add(newAddress);
1508             } else {
1509                 signalServiceAddresses.add(address);
1510             }
1511         }
1512
1513         return signalServiceAddresses.stream().map(this::resolveRecipient).collect(Collectors.toSet());
1514     }
1515
1516     private RecipientId refreshRegisteredUser(RecipientId recipientId) throws IOException {
1517         final var address = resolveSignalServiceAddress(recipientId);
1518         if (!address.getNumber().isPresent()) {
1519             return recipientId;
1520         }
1521         final var number = address.getNumber().get();
1522         final var uuidMap = getRegisteredUsers(Set.of(number));
1523         return resolveRecipientTrusted(new SignalServiceAddress(uuidMap.getOrDefault(number, null), number));
1524     }
1525
1526     private Map<String, UUID> getRegisteredUsers(final Set<String> numbers) throws IOException {
1527         try {
1528             return dependencies.getAccountManager()
1529                     .getRegisteredUsers(ServiceConfig.getIasKeyStore(),
1530                             numbers,
1531                             serviceEnvironmentConfig.getCdsMrenclave());
1532         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
1533             throw new IOException(e);
1534         }
1535     }
1536
1537     public void sendTypingMessage(
1538             TypingAction action, Set<String> recipients
1539     ) throws IOException, UntrustedIdentityException, InvalidNumberException {
1540         sendTypingMessageInternal(action, getSignalServiceAddresses(recipients));
1541     }
1542
1543     private void sendTypingMessageInternal(
1544             TypingAction action, Set<RecipientId> recipientIds
1545     ) throws IOException, UntrustedIdentityException {
1546         final var timestamp = System.currentTimeMillis();
1547         var message = new SignalServiceTypingMessage(action.toSignalService(), timestamp, Optional.absent());
1548         var messageSender = dependencies.getMessageSender();
1549         for (var recipientId : recipientIds) {
1550             final var address = resolveSignalServiceAddress(recipientId);
1551             messageSender.sendTyping(address, unidentifiedAccessHelper.getAccessFor(recipientId), message);
1552         }
1553     }
1554
1555     public void sendGroupTypingMessage(
1556             TypingAction action, GroupId groupId
1557     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1558         final var timestamp = System.currentTimeMillis();
1559         final var g = getGroupForSending(groupId);
1560         final var message = new SignalServiceTypingMessage(action.toSignalService(),
1561                 timestamp,
1562                 Optional.of(groupId.serialize()));
1563         final var messageSender = dependencies.getMessageSender();
1564         final var recipientIdList = new ArrayList<>(g.getMembersWithout(account.getSelfRecipientId()));
1565         final var addresses = recipientIdList.stream()
1566                 .map(this::resolveSignalServiceAddress)
1567                 .collect(Collectors.toList());
1568         messageSender.sendTyping(addresses, unidentifiedAccessHelper.getAccessFor(recipientIdList), message, null);
1569     }
1570
1571     private Pair<Long, List<SendMessageResult>> sendMessage(
1572             SignalServiceDataMessage.Builder messageBuilder, Set<RecipientId> recipientIds
1573     ) throws IOException {
1574         final var timestamp = System.currentTimeMillis();
1575         messageBuilder.withTimestamp(timestamp);
1576
1577         SignalServiceDataMessage message = null;
1578         try {
1579             message = messageBuilder.build();
1580             if (message.getGroupContext().isPresent()) {
1581                 try {
1582                     var messageSender = dependencies.getMessageSender();
1583                     final var isRecipientUpdate = false;
1584                     final var recipientIdList = new ArrayList<>(recipientIds);
1585                     final var addresses = recipientIdList.stream()
1586                             .map(this::resolveSignalServiceAddress)
1587                             .collect(Collectors.toList());
1588                     var result = messageSender.sendDataMessage(addresses,
1589                             unidentifiedAccessHelper.getAccessFor(recipientIdList),
1590                             isRecipientUpdate,
1591                             ContentHint.DEFAULT,
1592                             message,
1593                             sendResult -> logger.trace("Partial message send result: {}", sendResult.isSuccess()),
1594                             () -> false);
1595
1596                     for (var r : result) {
1597                         if (r.getIdentityFailure() != null) {
1598                             final var recipientId = resolveRecipient(r.getAddress());
1599                             final var newIdentity = account.getIdentityKeyStore()
1600                                     .saveIdentity(recipientId, r.getIdentityFailure().getIdentityKey(), new Date());
1601                             if (newIdentity) {
1602                                 account.getSessionStore().archiveSessions(recipientId);
1603                             }
1604                         }
1605                     }
1606
1607                     return new Pair<>(timestamp, result);
1608                 } catch (UntrustedIdentityException e) {
1609                     return new Pair<>(timestamp, List.of());
1610                 }
1611             } else {
1612                 // Send to all individually, so sync messages are sent correctly
1613                 messageBuilder.withProfileKey(account.getProfileKey().serialize());
1614                 var results = new ArrayList<SendMessageResult>(recipientIds.size());
1615                 for (var recipientId : recipientIds) {
1616                     final var contact = account.getContactStore().getContact(recipientId);
1617                     final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
1618                     messageBuilder.withExpiration(expirationTime);
1619                     message = messageBuilder.build();
1620                     results.add(sendMessage(recipientId, message));
1621                 }
1622                 return new Pair<>(timestamp, results);
1623             }
1624         } finally {
1625             if (message != null && message.isEndSession()) {
1626                 for (var recipient : recipientIds) {
1627                     handleEndSession(recipient);
1628                 }
1629             }
1630         }
1631     }
1632
1633     private Pair<Long, SendMessageResult> sendSelfMessage(
1634             SignalServiceDataMessage.Builder messageBuilder
1635     ) throws IOException {
1636         final var timestamp = System.currentTimeMillis();
1637         messageBuilder.withTimestamp(timestamp);
1638         final var recipientId = account.getSelfRecipientId();
1639
1640         final var contact = account.getContactStore().getContact(recipientId);
1641         final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
1642         messageBuilder.withExpiration(expirationTime);
1643
1644         var message = messageBuilder.build();
1645         final var result = sendSelfMessage(message);
1646         return new Pair<>(timestamp, result);
1647     }
1648
1649     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1650         var messageSender = dependencies.getMessageSender();
1651
1652         var recipientId = account.getSelfRecipientId();
1653
1654         final var unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipientId);
1655         var recipient = resolveSignalServiceAddress(recipientId);
1656         var transcript = new SentTranscriptMessage(Optional.of(recipient),
1657                 message.getTimestamp(),
1658                 message,
1659                 message.getExpiresInSeconds(),
1660                 Map.of(recipient, unidentifiedAccess.isPresent()),
1661                 false);
1662         var syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1663
1664         try {
1665             return messageSender.sendSyncMessage(syncMessage, unidentifiedAccess);
1666         } catch (UntrustedIdentityException e) {
1667             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1668         }
1669     }
1670
1671     private SendMessageResult sendMessage(
1672             RecipientId recipientId, SignalServiceDataMessage message
1673     ) throws IOException {
1674         var messageSender = dependencies.getMessageSender();
1675
1676         final var address = resolveSignalServiceAddress(recipientId);
1677         try {
1678             try {
1679                 return messageSender.sendDataMessage(address,
1680                         unidentifiedAccessHelper.getAccessFor(recipientId),
1681                         ContentHint.DEFAULT,
1682                         message);
1683             } catch (UnregisteredUserException e) {
1684                 final var newRecipientId = refreshRegisteredUser(recipientId);
1685                 return messageSender.sendDataMessage(resolveSignalServiceAddress(newRecipientId),
1686                         unidentifiedAccessHelper.getAccessFor(newRecipientId),
1687                         ContentHint.DEFAULT,
1688                         message);
1689             }
1690         } catch (UntrustedIdentityException e) {
1691             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1692         }
1693     }
1694
1695     private SendMessageResult sendNullMessage(RecipientId recipientId) throws IOException {
1696         var messageSender = dependencies.getMessageSender();
1697
1698         final var address = resolveSignalServiceAddress(recipientId);
1699         try {
1700             try {
1701                 return messageSender.sendNullMessage(address, unidentifiedAccessHelper.getAccessFor(recipientId));
1702             } catch (UnregisteredUserException e) {
1703                 final var newRecipientId = refreshRegisteredUser(recipientId);
1704                 final var newAddress = resolveSignalServiceAddress(newRecipientId);
1705                 return messageSender.sendNullMessage(newAddress, unidentifiedAccessHelper.getAccessFor(newRecipientId));
1706             }
1707         } catch (UntrustedIdentityException e) {
1708             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1709         }
1710     }
1711
1712     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, ProtocolUntrustedIdentityException, InvalidMessageStructureException {
1713         return dependencies.getCipher().decrypt(envelope);
1714     }
1715
1716     private void handleEndSession(RecipientId recipientId) {
1717         account.getSessionStore().deleteAllSessions(recipientId);
1718     }
1719
1720     private List<HandleAction> handleSignalServiceDataMessage(
1721             SignalServiceDataMessage message,
1722             boolean isSync,
1723             SignalServiceAddress source,
1724             SignalServiceAddress destination,
1725             boolean ignoreAttachments
1726     ) {
1727         var actions = new ArrayList<HandleAction>();
1728         if (message.getGroupContext().isPresent()) {
1729             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1730                 var groupInfo = message.getGroupContext().get().getGroupV1().get();
1731                 var groupId = GroupId.v1(groupInfo.getGroupId());
1732                 var group = getGroup(groupId);
1733                 if (group == null || group instanceof GroupInfoV1) {
1734                     var groupV1 = (GroupInfoV1) group;
1735                     switch (groupInfo.getType()) {
1736                         case UPDATE: {
1737                             if (groupV1 == null) {
1738                                 groupV1 = new GroupInfoV1(groupId);
1739                             }
1740
1741                             if (groupInfo.getAvatar().isPresent()) {
1742                                 var avatar = groupInfo.getAvatar().get();
1743                                 downloadGroupAvatar(avatar, groupV1.getGroupId());
1744                             }
1745
1746                             if (groupInfo.getName().isPresent()) {
1747                                 groupV1.name = groupInfo.getName().get();
1748                             }
1749
1750                             if (groupInfo.getMembers().isPresent()) {
1751                                 groupV1.addMembers(groupInfo.getMembers()
1752                                         .get()
1753                                         .stream()
1754                                         .map(this::resolveRecipient)
1755                                         .collect(Collectors.toSet()));
1756                             }
1757
1758                             account.getGroupStore().updateGroup(groupV1);
1759                             break;
1760                         }
1761                         case DELIVER:
1762                             if (groupV1 == null && !isSync) {
1763                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1764                             }
1765                             break;
1766                         case QUIT: {
1767                             if (groupV1 != null) {
1768                                 groupV1.removeMember(resolveRecipient(source));
1769                                 account.getGroupStore().updateGroup(groupV1);
1770                             }
1771                             break;
1772                         }
1773                         case REQUEST_INFO:
1774                             if (groupV1 != null && !isSync) {
1775                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
1776                             }
1777                             break;
1778                     }
1779                 } else {
1780                     // Received a group v1 message for a v2 group
1781                 }
1782             }
1783             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1784                 final var groupContext = message.getGroupContext().get().getGroupV2().get();
1785                 final var groupMasterKey = groupContext.getMasterKey();
1786
1787                 getOrMigrateGroup(groupMasterKey,
1788                         groupContext.getRevision(),
1789                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1790             }
1791         }
1792
1793         final var conversationPartnerAddress = isSync ? destination : source;
1794         if (conversationPartnerAddress != null && message.isEndSession()) {
1795             handleEndSession(resolveRecipient(conversationPartnerAddress));
1796         }
1797         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1798             if (message.getGroupContext().isPresent()) {
1799                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1800                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1801                     var group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1802                     if (group != null) {
1803                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1804                             group.messageExpirationTime = message.getExpiresInSeconds();
1805                             account.getGroupStore().updateGroup(group);
1806                         }
1807                     }
1808                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1809                     // disappearing message timer already stored in the DecryptedGroup
1810                 }
1811             } else if (conversationPartnerAddress != null) {
1812                 setExpirationTimer(resolveRecipient(conversationPartnerAddress), message.getExpiresInSeconds());
1813             }
1814         }
1815         if (!ignoreAttachments) {
1816             if (message.getAttachments().isPresent()) {
1817                 for (var attachment : message.getAttachments().get()) {
1818                     downloadAttachment(attachment);
1819                 }
1820             }
1821             if (message.getSharedContacts().isPresent()) {
1822                 for (var contact : message.getSharedContacts().get()) {
1823                     if (contact.getAvatar().isPresent()) {
1824                         downloadAttachment(contact.getAvatar().get().getAttachment());
1825                     }
1826                 }
1827             }
1828         }
1829         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1830             final ProfileKey profileKey;
1831             try {
1832                 profileKey = new ProfileKey(message.getProfileKey().get());
1833             } catch (InvalidInputException e) {
1834                 throw new AssertionError(e);
1835             }
1836             if (source.matches(account.getSelfAddress())) {
1837                 this.account.setProfileKey(profileKey);
1838             }
1839             this.account.getProfileStore().storeProfileKey(resolveRecipient(source), profileKey);
1840         }
1841         if (message.getPreviews().isPresent()) {
1842             final var previews = message.getPreviews().get();
1843             for (var preview : previews) {
1844                 if (preview.getImage().isPresent()) {
1845                     downloadAttachment(preview.getImage().get());
1846                 }
1847             }
1848         }
1849         if (message.getQuote().isPresent()) {
1850             final var quote = message.getQuote().get();
1851
1852             for (var quotedAttachment : quote.getAttachments()) {
1853                 final var thumbnail = quotedAttachment.getThumbnail();
1854                 if (thumbnail != null) {
1855                     downloadAttachment(thumbnail);
1856                 }
1857             }
1858         }
1859         if (message.getSticker().isPresent()) {
1860             final var messageSticker = message.getSticker().get();
1861             final var stickerPackId = StickerPackId.deserialize(messageSticker.getPackId());
1862             var sticker = account.getStickerStore().getSticker(stickerPackId);
1863             if (sticker == null) {
1864                 sticker = new Sticker(stickerPackId, messageSticker.getPackKey());
1865                 account.getStickerStore().updateSticker(sticker);
1866             }
1867             enqueueJob(new RetrieveStickerPackJob(stickerPackId, messageSticker.getPackKey()));
1868         }
1869         return actions;
1870     }
1871
1872     private GroupInfoV2 getOrMigrateGroup(
1873             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1874     ) {
1875         final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1876
1877         var groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1878         var groupInfo = getGroup(groupId);
1879         final GroupInfoV2 groupInfoV2;
1880         if (groupInfo instanceof GroupInfoV1) {
1881             // Received a v2 group message for a v1 group, we need to locally migrate the group
1882             account.getGroupStore().deleteGroupV1(((GroupInfoV1) groupInfo).getGroupId());
1883             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1884             logger.info("Locally migrated group {} to group v2, id: {}",
1885                     groupInfo.getGroupId().toBase64(),
1886                     groupInfoV2.getGroupId().toBase64());
1887         } else if (groupInfo instanceof GroupInfoV2) {
1888             groupInfoV2 = (GroupInfoV2) groupInfo;
1889         } else {
1890             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1891         }
1892
1893         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1894             DecryptedGroup group = null;
1895             if (signedGroupChange != null
1896                     && groupInfoV2.getGroup() != null
1897                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1898                 group = groupV2Helper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(),
1899                         signedGroupChange,
1900                         groupMasterKey);
1901             }
1902             if (group == null) {
1903                 group = groupV2Helper.getDecryptedGroup(groupSecretParams);
1904             }
1905             if (group != null) {
1906                 storeProfileKeysFromMembers(group);
1907                 final var avatar = group.getAvatar();
1908                 if (avatar != null && !avatar.isEmpty()) {
1909                     downloadGroupAvatar(groupId, groupSecretParams, avatar);
1910                 }
1911             }
1912             groupInfoV2.setGroup(group, this::resolveRecipient);
1913             account.getGroupStore().updateGroup(groupInfoV2);
1914         }
1915
1916         return groupInfoV2;
1917     }
1918
1919     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1920         for (var member : group.getMembersList()) {
1921             final var uuid = UuidUtil.parseOrThrow(member.getUuid().toByteArray());
1922             final var recipientId = account.getRecipientStore().resolveRecipient(uuid);
1923             try {
1924                 account.getProfileStore()
1925                         .storeProfileKey(recipientId, new ProfileKey(member.getProfileKey().toByteArray()));
1926             } catch (InvalidInputException ignored) {
1927             }
1928         }
1929     }
1930
1931     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1932         Set<HandleAction> queuedActions = new HashSet<>();
1933         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
1934             var actions = retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
1935             if (actions != null) {
1936                 queuedActions.addAll(actions);
1937             }
1938         }
1939         for (var action : queuedActions) {
1940             try {
1941                 action.execute(this);
1942             } catch (Throwable e) {
1943                 if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
1944                     Thread.currentThread().interrupt();
1945                 }
1946                 logger.warn("Message action failed.", e);
1947             }
1948         }
1949     }
1950
1951     private List<HandleAction> retryFailedReceivedMessage(
1952             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
1953     ) {
1954         var envelope = cachedMessage.loadEnvelope();
1955         if (envelope == null) {
1956             return null;
1957         }
1958         SignalServiceContent content = null;
1959         List<HandleAction> actions = null;
1960         if (!envelope.isReceipt()) {
1961             try {
1962                 content = decryptMessage(envelope);
1963             } catch (ProtocolUntrustedIdentityException e) {
1964                 if (!envelope.hasSource()) {
1965                     final var identifier = e.getSender();
1966                     final var recipientId = resolveRecipient(identifier);
1967                     try {
1968                         account.getMessageCache().replaceSender(cachedMessage, recipientId);
1969                     } catch (IOException ioException) {
1970                         logger.warn("Failed to move cached message to recipient folder: {}", ioException.getMessage());
1971                     }
1972                 }
1973                 return null;
1974             } catch (Exception er) {
1975                 // All other errors are not recoverable, so delete the cached message
1976                 cachedMessage.delete();
1977                 return null;
1978             }
1979             actions = handleMessage(envelope, content, ignoreAttachments);
1980         }
1981         handler.handleMessage(envelope, content, null);
1982         cachedMessage.delete();
1983         return actions;
1984     }
1985
1986     public void receiveMessages(
1987             long timeout,
1988             TimeUnit unit,
1989             boolean returnOnTimeout,
1990             boolean ignoreAttachments,
1991             ReceiveMessageHandler handler
1992     ) throws IOException, InterruptedException {
1993         retryFailedReceivedMessages(handler, ignoreAttachments);
1994
1995         Set<HandleAction> queuedActions = null;
1996
1997         final var signalWebSocket = dependencies.getSignalWebSocket();
1998         signalWebSocket.connect();
1999
2000         var hasCaughtUpWithOldMessages = false;
2001
2002         while (!Thread.interrupted()) {
2003             SignalServiceEnvelope envelope;
2004             SignalServiceContent content = null;
2005             Exception exception = null;
2006             final CachedMessage[] cachedMessage = {null};
2007             account.setLastReceiveTimestamp(System.currentTimeMillis());
2008             logger.debug("Checking for new message from server");
2009             try {
2010                 var result = signalWebSocket.readOrEmpty(unit.toMillis(timeout), envelope1 -> {
2011                     final var recipientId = envelope1.hasSource()
2012                             ? resolveRecipient(envelope1.getSourceIdentifier())
2013                             : null;
2014                     // store message on disk, before acknowledging receipt to the server
2015                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1, recipientId);
2016                 });
2017                 logger.debug("New message received from server");
2018                 if (result.isPresent()) {
2019                     envelope = result.get();
2020                 } else {
2021                     // Received indicator that server queue is empty
2022                     hasCaughtUpWithOldMessages = true;
2023
2024                     if (queuedActions != null) {
2025                         for (var action : queuedActions) {
2026                             try {
2027                                 action.execute(this);
2028                             } catch (Throwable e) {
2029                                 if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
2030                                     Thread.currentThread().interrupt();
2031                                 }
2032                                 logger.warn("Message action failed.", e);
2033                             }
2034                         }
2035                         queuedActions.clear();
2036                         queuedActions = null;
2037                     }
2038
2039                     // Continue to wait another timeout for new messages
2040                     continue;
2041                 }
2042             } catch (AssertionError e) {
2043                 if (e.getCause() instanceof InterruptedException) {
2044                     throw (InterruptedException) e.getCause();
2045                 } else {
2046                     throw e;
2047                 }
2048             } catch (WebSocketUnavailableException e) {
2049                 logger.debug("Pipe unexpectedly unavailable, connecting");
2050                 signalWebSocket.connect();
2051                 continue;
2052             } catch (TimeoutException e) {
2053                 if (returnOnTimeout) return;
2054                 continue;
2055             }
2056
2057             if (envelope.hasSource()) {
2058                 // Store uuid if we don't have it already
2059                 // address/uuid in envelope is sent by server
2060                 resolveRecipientTrusted(envelope.getSourceAddress());
2061             }
2062             final var notAGroupMember = isNotAGroupMember(envelope, content);
2063             if (!envelope.isReceipt()) {
2064                 try {
2065                     content = decryptMessage(envelope);
2066                 } catch (Exception e) {
2067                     exception = e;
2068                 }
2069                 if (!envelope.hasSource() && content != null) {
2070                     // Store uuid if we don't have it already
2071                     // address/uuid is validated by unidentified sender certificate
2072                     resolveRecipientTrusted(content.getSender());
2073                 }
2074                 var actions = handleMessage(envelope, content, ignoreAttachments);
2075                 if (exception instanceof ProtocolInvalidMessageException) {
2076                     final var sender = resolveRecipient(((ProtocolInvalidMessageException) exception).getSender());
2077                     logger.debug("Received invalid message, queuing renew session action.");
2078                     actions.add(new RenewSessionAction(sender));
2079                 }
2080                 if (hasCaughtUpWithOldMessages) {
2081                     for (var action : actions) {
2082                         try {
2083                             action.execute(this);
2084                         } catch (Throwable e) {
2085                             if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
2086                                 Thread.currentThread().interrupt();
2087                             }
2088                             logger.warn("Message action failed.", e);
2089                         }
2090                     }
2091                 } else {
2092                     if (queuedActions == null) {
2093                         queuedActions = new HashSet<>();
2094                     }
2095                     queuedActions.addAll(actions);
2096                 }
2097             }
2098             if (isMessageBlocked(envelope, content)) {
2099                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
2100             } else if (notAGroupMember) {
2101                 logger.info("Ignoring a message from a non group member: {}", envelope.getTimestamp());
2102             } else {
2103                 handler.handleMessage(envelope, content, exception);
2104             }
2105             if (cachedMessage[0] != null) {
2106                 if (exception instanceof ProtocolUntrustedIdentityException) {
2107                     final var identifier = ((ProtocolUntrustedIdentityException) exception).getSender();
2108                     final var recipientId = resolveRecipient(identifier);
2109                     queuedActions.add(new RetrieveProfileAction(recipientId));
2110                     if (!envelope.hasSource()) {
2111                         try {
2112                             cachedMessage[0] = account.getMessageCache().replaceSender(cachedMessage[0], recipientId);
2113                         } catch (IOException ioException) {
2114                             logger.warn("Failed to move cached message to recipient folder: {}",
2115                                     ioException.getMessage());
2116                         }
2117                     }
2118                 } else {
2119                     cachedMessage[0].delete();
2120                 }
2121             }
2122         }
2123     }
2124
2125     private boolean isMessageBlocked(
2126             SignalServiceEnvelope envelope, SignalServiceContent content
2127     ) {
2128         SignalServiceAddress source;
2129         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
2130             source = envelope.getSourceAddress();
2131         } else if (content != null) {
2132             source = content.getSender();
2133         } else {
2134             return false;
2135         }
2136         final var recipientId = resolveRecipient(source);
2137         if (isContactBlocked(recipientId)) {
2138             return true;
2139         }
2140
2141         if (content != null && content.getDataMessage().isPresent()) {
2142             var message = content.getDataMessage().get();
2143             if (message.getGroupContext().isPresent()) {
2144                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
2145                 var group = getGroup(groupId);
2146                 if (group != null && group.isBlocked()) {
2147                     return true;
2148                 }
2149             }
2150         }
2151         return false;
2152     }
2153
2154     public boolean isContactBlocked(final String identifier) throws InvalidNumberException {
2155         final var recipientId = canonicalizeAndResolveRecipient(identifier);
2156         return isContactBlocked(recipientId);
2157     }
2158
2159     private boolean isContactBlocked(final RecipientId recipientId) {
2160         var sourceContact = account.getContactStore().getContact(recipientId);
2161         return sourceContact != null && sourceContact.isBlocked();
2162     }
2163
2164     private boolean isNotAGroupMember(
2165             SignalServiceEnvelope envelope, SignalServiceContent content
2166     ) {
2167         SignalServiceAddress source;
2168         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
2169             source = envelope.getSourceAddress();
2170         } else if (content != null) {
2171             source = content.getSender();
2172         } else {
2173             return false;
2174         }
2175
2176         if (content != null && content.getDataMessage().isPresent()) {
2177             var message = content.getDataMessage().get();
2178             if (message.getGroupContext().isPresent()) {
2179                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
2180                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
2181                     if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
2182                         return false;
2183                     }
2184                 }
2185                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
2186                 var group = getGroup(groupId);
2187                 if (group != null && !group.isMember(resolveRecipient(source))) {
2188                     return true;
2189                 }
2190             }
2191         }
2192         return false;
2193     }
2194
2195     private List<HandleAction> handleMessage(
2196             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
2197     ) {
2198         var actions = new ArrayList<HandleAction>();
2199         if (content != null) {
2200             final SignalServiceAddress sender;
2201             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
2202                 sender = envelope.getSourceAddress();
2203             } else {
2204                 sender = content.getSender();
2205             }
2206
2207             if (content.getDataMessage().isPresent()) {
2208                 var message = content.getDataMessage().get();
2209
2210                 if (content.isNeedsReceipt()) {
2211                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
2212                 }
2213
2214                 actions.addAll(handleSignalServiceDataMessage(message,
2215                         false,
2216                         sender,
2217                         account.getSelfAddress(),
2218                         ignoreAttachments));
2219             }
2220             if (content.getSyncMessage().isPresent()) {
2221                 account.setMultiDevice(true);
2222                 var syncMessage = content.getSyncMessage().get();
2223                 if (syncMessage.getSent().isPresent()) {
2224                     var message = syncMessage.getSent().get();
2225                     final var destination = message.getDestination().orNull();
2226                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
2227                             true,
2228                             sender,
2229                             destination,
2230                             ignoreAttachments));
2231                 }
2232                 if (syncMessage.getRequest().isPresent() && account.isMasterDevice()) {
2233                     var rm = syncMessage.getRequest().get();
2234                     if (rm.isContactsRequest()) {
2235                         actions.add(SendSyncContactsAction.create());
2236                     }
2237                     if (rm.isGroupsRequest()) {
2238                         actions.add(SendSyncGroupsAction.create());
2239                     }
2240                     if (rm.isBlockedListRequest()) {
2241                         actions.add(SendSyncBlockedListAction.create());
2242                     }
2243                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
2244                 }
2245                 if (syncMessage.getGroups().isPresent()) {
2246                     File tmpFile = null;
2247                     try {
2248                         tmpFile = IOUtils.createTempFile();
2249                         final var groupsMessage = syncMessage.getGroups().get();
2250                         try (var attachmentAsStream = retrieveAttachmentAsStream(groupsMessage.asPointer(), tmpFile)) {
2251                             var s = new DeviceGroupsInputStream(attachmentAsStream);
2252                             DeviceGroup g;
2253                             while (true) {
2254                                 try {
2255                                     g = s.read();
2256                                 } catch (IOException e) {
2257                                     logger.warn("Sync groups contained invalid group, ignoring: {}", e.getMessage());
2258                                     continue;
2259                                 }
2260                                 if (g == null) {
2261                                     break;
2262                                 }
2263                                 var syncGroup = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(g.getId()));
2264                                 if (syncGroup != null) {
2265                                     if (g.getName().isPresent()) {
2266                                         syncGroup.name = g.getName().get();
2267                                     }
2268                                     syncGroup.addMembers(g.getMembers()
2269                                             .stream()
2270                                             .map(this::resolveRecipient)
2271                                             .collect(Collectors.toSet()));
2272                                     if (!g.isActive()) {
2273                                         syncGroup.removeMember(account.getSelfRecipientId());
2274                                     } else {
2275                                         // Add ourself to the member set as it's marked as active
2276                                         syncGroup.addMembers(List.of(account.getSelfRecipientId()));
2277                                     }
2278                                     syncGroup.blocked = g.isBlocked();
2279                                     if (g.getColor().isPresent()) {
2280                                         syncGroup.color = g.getColor().get();
2281                                     }
2282
2283                                     if (g.getAvatar().isPresent()) {
2284                                         downloadGroupAvatar(g.getAvatar().get(), syncGroup.getGroupId());
2285                                     }
2286                                     syncGroup.archived = g.isArchived();
2287                                     account.getGroupStore().updateGroup(syncGroup);
2288                                 }
2289                             }
2290                         }
2291                     } catch (Exception e) {
2292                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
2293                                 tmpFile,
2294                                 e.getMessage());
2295                     } finally {
2296                         if (tmpFile != null) {
2297                             try {
2298                                 Files.delete(tmpFile.toPath());
2299                             } catch (IOException e) {
2300                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
2301                                         tmpFile,
2302                                         e.getMessage());
2303                             }
2304                         }
2305                     }
2306                 }
2307                 if (syncMessage.getBlockedList().isPresent()) {
2308                     final var blockedListMessage = syncMessage.getBlockedList().get();
2309                     for (var address : blockedListMessage.getAddresses()) {
2310                         setContactBlocked(resolveRecipient(address), true);
2311                     }
2312                     for (var groupId : blockedListMessage.getGroupIds()
2313                             .stream()
2314                             .map(GroupId::unknownVersion)
2315                             .collect(Collectors.toSet())) {
2316                         try {
2317                             setGroupBlocked(groupId, true);
2318                         } catch (GroupNotFoundException e) {
2319                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
2320                                     groupId.toBase64());
2321                         }
2322                     }
2323                 }
2324                 if (syncMessage.getContacts().isPresent()) {
2325                     File tmpFile = null;
2326                     try {
2327                         tmpFile = IOUtils.createTempFile();
2328                         final var contactsMessage = syncMessage.getContacts().get();
2329                         try (var attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
2330                                 .asPointer(), tmpFile)) {
2331                             var s = new DeviceContactsInputStream(attachmentAsStream);
2332                             DeviceContact c;
2333                             while (true) {
2334                                 try {
2335                                     c = s.read();
2336                                 } catch (IOException e) {
2337                                     logger.warn("Sync contacts contained invalid contact, ignoring: {}",
2338                                             e.getMessage());
2339                                     continue;
2340                                 }
2341                                 if (c == null) {
2342                                     break;
2343                                 }
2344                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
2345                                     account.setProfileKey(c.getProfileKey().get());
2346                                 }
2347                                 final var recipientId = resolveRecipientTrusted(c.getAddress());
2348                                 var contact = account.getContactStore().getContact(recipientId);
2349                                 final var builder = contact == null
2350                                         ? Contact.newBuilder()
2351                                         : Contact.newBuilder(contact);
2352                                 if (c.getName().isPresent()) {
2353                                     builder.withName(c.getName().get());
2354                                 }
2355                                 if (c.getColor().isPresent()) {
2356                                     builder.withColor(c.getColor().get());
2357                                 }
2358                                 if (c.getProfileKey().isPresent()) {
2359                                     account.getProfileStore().storeProfileKey(recipientId, c.getProfileKey().get());
2360                                 }
2361                                 if (c.getVerified().isPresent()) {
2362                                     final var verifiedMessage = c.getVerified().get();
2363                                     account.getIdentityKeyStore()
2364                                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2365                                                     verifiedMessage.getIdentityKey(),
2366                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2367                                 }
2368                                 if (c.getExpirationTimer().isPresent()) {
2369                                     builder.withMessageExpirationTime(c.getExpirationTimer().get());
2370                                 }
2371                                 builder.withBlocked(c.isBlocked());
2372                                 builder.withArchived(c.isArchived());
2373                                 account.getContactStore().storeContact(recipientId, builder.build());
2374
2375                                 if (c.getAvatar().isPresent()) {
2376                                     downloadContactAvatar(c.getAvatar().get(), c.getAddress());
2377                                 }
2378                             }
2379                         }
2380                     } catch (Exception e) {
2381                         logger.warn("Failed to handle received sync contacts “{}”, ignoring: {}",
2382                                 tmpFile,
2383                                 e.getMessage());
2384                     } finally {
2385                         if (tmpFile != null) {
2386                             try {
2387                                 Files.delete(tmpFile.toPath());
2388                             } catch (IOException e) {
2389                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2390                                         tmpFile,
2391                                         e.getMessage());
2392                             }
2393                         }
2394                     }
2395                 }
2396                 if (syncMessage.getVerified().isPresent()) {
2397                     final var verifiedMessage = syncMessage.getVerified().get();
2398                     account.getIdentityKeyStore()
2399                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2400                                     verifiedMessage.getIdentityKey(),
2401                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2402                 }
2403                 if (syncMessage.getStickerPackOperations().isPresent()) {
2404                     final var stickerPackOperationMessages = syncMessage.getStickerPackOperations().get();
2405                     for (var m : stickerPackOperationMessages) {
2406                         if (!m.getPackId().isPresent()) {
2407                             continue;
2408                         }
2409                         final var stickerPackId = StickerPackId.deserialize(m.getPackId().get());
2410                         final var installed = !m.getType().isPresent()
2411                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL;
2412
2413                         var sticker = account.getStickerStore().getSticker(stickerPackId);
2414                         if (m.getPackKey().isPresent()) {
2415                             if (sticker == null) {
2416                                 sticker = new Sticker(stickerPackId, m.getPackKey().get());
2417                             }
2418                             if (installed) {
2419                                 enqueueJob(new RetrieveStickerPackJob(stickerPackId, m.getPackKey().get()));
2420                             }
2421                         }
2422
2423                         if (sticker != null) {
2424                             sticker.setInstalled(installed);
2425                             account.getStickerStore().updateSticker(sticker);
2426                         }
2427                     }
2428                 }
2429                 if (syncMessage.getFetchType().isPresent()) {
2430                     switch (syncMessage.getFetchType().get()) {
2431                         case LOCAL_PROFILE:
2432                             getRecipientProfile(account.getSelfRecipientId(), true);
2433                         case STORAGE_MANIFEST:
2434                             // TODO
2435                     }
2436                 }
2437                 if (syncMessage.getKeys().isPresent()) {
2438                     final var keysMessage = syncMessage.getKeys().get();
2439                     if (keysMessage.getStorageService().isPresent()) {
2440                         final var storageKey = keysMessage.getStorageService().get();
2441                         account.setStorageKey(storageKey);
2442                     }
2443                 }
2444                 if (syncMessage.getConfiguration().isPresent()) {
2445                     // TODO
2446                 }
2447             }
2448         }
2449         return actions;
2450     }
2451
2452     private void downloadContactAvatar(SignalServiceAttachment avatar, SignalServiceAddress address) {
2453         try {
2454             avatarStore.storeContactAvatar(address, outputStream -> retrieveAttachment(avatar, outputStream));
2455         } catch (IOException e) {
2456             logger.warn("Failed to download avatar for contact {}, ignoring: {}", address, e.getMessage());
2457         }
2458     }
2459
2460     private void downloadGroupAvatar(SignalServiceAttachment avatar, GroupId groupId) {
2461         try {
2462             avatarStore.storeGroupAvatar(groupId, outputStream -> retrieveAttachment(avatar, outputStream));
2463         } catch (IOException e) {
2464             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2465         }
2466     }
2467
2468     private void downloadGroupAvatar(GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey) {
2469         try {
2470             avatarStore.storeGroupAvatar(groupId,
2471                     outputStream -> retrieveGroupV2Avatar(groupSecretParams, cdnKey, outputStream));
2472         } catch (IOException e) {
2473             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2474         }
2475     }
2476
2477     private void downloadProfileAvatar(
2478             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2479     ) {
2480         try {
2481             avatarStore.storeProfileAvatar(address,
2482                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
2483         } catch (Throwable e) {
2484             if (e instanceof AssertionError && e.getCause() instanceof InterruptedException) {
2485                 Thread.currentThread().interrupt();
2486             }
2487             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
2488         }
2489     }
2490
2491     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2492         return attachmentStore.getAttachmentFile(attachmentId);
2493     }
2494
2495     private void downloadAttachment(final SignalServiceAttachment attachment) {
2496         if (!attachment.isPointer()) {
2497             logger.warn("Invalid state, can't store an attachment stream.");
2498         }
2499
2500         var pointer = attachment.asPointer();
2501         if (pointer.getPreview().isPresent()) {
2502             final var preview = pointer.getPreview().get();
2503             try {
2504                 attachmentStore.storeAttachmentPreview(pointer.getRemoteId(),
2505                         outputStream -> outputStream.write(preview, 0, preview.length));
2506             } catch (IOException e) {
2507                 logger.warn("Failed to download attachment preview, ignoring: {}", e.getMessage());
2508             }
2509         }
2510
2511         try {
2512             attachmentStore.storeAttachment(pointer.getRemoteId(),
2513                     outputStream -> retrieveAttachmentPointer(pointer, outputStream));
2514         } catch (IOException e) {
2515             logger.warn("Failed to download attachment ({}), ignoring: {}", pointer.getRemoteId(), e.getMessage());
2516         }
2517     }
2518
2519     private void retrieveGroupV2Avatar(
2520             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
2521     ) throws IOException {
2522         var groupOperations = dependencies.getGroupsV2Operations().forGroup(groupSecretParams);
2523
2524         var tmpFile = IOUtils.createTempFile();
2525         try (InputStream input = dependencies.getMessageReceiver()
2526                 .retrieveGroupsV2ProfileAvatar(cdnKey, tmpFile, ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2527             var encryptedData = IOUtils.readFully(input);
2528
2529             var decryptedData = groupOperations.decryptAvatar(encryptedData);
2530             outputStream.write(decryptedData);
2531         } finally {
2532             try {
2533                 Files.delete(tmpFile.toPath());
2534             } catch (IOException e) {
2535                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2536                         tmpFile,
2537                         e.getMessage());
2538             }
2539         }
2540     }
2541
2542     private void retrieveProfileAvatar(
2543             String avatarPath, ProfileKey profileKey, OutputStream outputStream
2544     ) throws IOException {
2545         var tmpFile = IOUtils.createTempFile();
2546         try (var input = dependencies.getMessageReceiver()
2547                 .retrieveProfileAvatar(avatarPath,
2548                         tmpFile,
2549                         profileKey,
2550                         ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2551             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2552             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2553         } finally {
2554             try {
2555                 Files.delete(tmpFile.toPath());
2556             } catch (IOException e) {
2557                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2558                         tmpFile,
2559                         e.getMessage());
2560             }
2561         }
2562     }
2563
2564     private void retrieveAttachment(
2565             final SignalServiceAttachment attachment, final OutputStream outputStream
2566     ) throws IOException {
2567         if (attachment.isPointer()) {
2568             var pointer = attachment.asPointer();
2569             retrieveAttachmentPointer(pointer, outputStream);
2570         } else {
2571             var stream = attachment.asStream();
2572             IOUtils.copyStream(stream.getInputStream(), outputStream);
2573         }
2574     }
2575
2576     private void retrieveAttachmentPointer(
2577             SignalServiceAttachmentPointer pointer, OutputStream outputStream
2578     ) throws IOException {
2579         var tmpFile = IOUtils.createTempFile();
2580         try (var input = retrieveAttachmentAsStream(pointer, tmpFile)) {
2581             IOUtils.copyStream(input, outputStream);
2582         } catch (MissingConfigurationException | InvalidMessageException e) {
2583             throw new IOException(e);
2584         } finally {
2585             try {
2586                 Files.delete(tmpFile.toPath());
2587             } catch (IOException e) {
2588                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2589                         tmpFile,
2590                         e.getMessage());
2591             }
2592         }
2593     }
2594
2595     private InputStream retrieveAttachmentAsStream(
2596             SignalServiceAttachmentPointer pointer, File tmpFile
2597     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2598         return dependencies.getMessageReceiver()
2599                 .retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2600     }
2601
2602     void sendGroups() throws IOException, UntrustedIdentityException {
2603         var groupsFile = IOUtils.createTempFile();
2604
2605         try {
2606             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2607                 var out = new DeviceGroupsOutputStream(fos);
2608                 for (var record : getGroups()) {
2609                     if (record instanceof GroupInfoV1) {
2610                         var groupInfo = (GroupInfoV1) record;
2611                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2612                                 Optional.fromNullable(groupInfo.name),
2613                                 groupInfo.getMembers()
2614                                         .stream()
2615                                         .map(this::resolveSignalServiceAddress)
2616                                         .collect(Collectors.toList()),
2617                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2618                                 groupInfo.isMember(account.getSelfRecipientId()),
2619                                 Optional.of(groupInfo.messageExpirationTime),
2620                                 Optional.fromNullable(groupInfo.color),
2621                                 groupInfo.blocked,
2622                                 Optional.absent(),
2623                                 groupInfo.archived));
2624                     }
2625                 }
2626             }
2627
2628             if (groupsFile.exists() && groupsFile.length() > 0) {
2629                 try (var groupsFileStream = new FileInputStream(groupsFile)) {
2630                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2631                             .withStream(groupsFileStream)
2632                             .withContentType("application/octet-stream")
2633                             .withLength(groupsFile.length())
2634                             .build();
2635
2636                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2637                 }
2638             }
2639         } finally {
2640             try {
2641                 Files.delete(groupsFile.toPath());
2642             } catch (IOException e) {
2643                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2644             }
2645         }
2646     }
2647
2648     public void sendContacts() throws IOException, UntrustedIdentityException {
2649         var contactsFile = IOUtils.createTempFile();
2650
2651         try {
2652             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2653                 var out = new DeviceContactsOutputStream(fos);
2654                 for (var contactPair : account.getContactStore().getContacts()) {
2655                     final var recipientId = contactPair.first();
2656                     final var contact = contactPair.second();
2657                     final var address = resolveSignalServiceAddress(recipientId);
2658
2659                     var currentIdentity = account.getIdentityKeyStore().getIdentity(recipientId);
2660                     VerifiedMessage verifiedMessage = null;
2661                     if (currentIdentity != null) {
2662                         verifiedMessage = new VerifiedMessage(address,
2663                                 currentIdentity.getIdentityKey(),
2664                                 currentIdentity.getTrustLevel().toVerifiedState(),
2665                                 currentIdentity.getDateAdded().getTime());
2666                     }
2667
2668                     var profileKey = account.getProfileStore().getProfileKey(recipientId);
2669                     out.write(new DeviceContact(address,
2670                             Optional.fromNullable(contact.getName()),
2671                             createContactAvatarAttachment(address),
2672                             Optional.fromNullable(contact.getColor()),
2673                             Optional.fromNullable(verifiedMessage),
2674                             Optional.fromNullable(profileKey),
2675                             contact.isBlocked(),
2676                             Optional.of(contact.getMessageExpirationTime()),
2677                             Optional.absent(),
2678                             contact.isArchived()));
2679                 }
2680
2681                 if (account.getProfileKey() != null) {
2682                     // Send our own profile key as well
2683                     out.write(new DeviceContact(account.getSelfAddress(),
2684                             Optional.absent(),
2685                             Optional.absent(),
2686                             Optional.absent(),
2687                             Optional.absent(),
2688                             Optional.of(account.getProfileKey()),
2689                             false,
2690                             Optional.absent(),
2691                             Optional.absent(),
2692                             false));
2693                 }
2694             }
2695
2696             if (contactsFile.exists() && contactsFile.length() > 0) {
2697                 try (var contactsFileStream = new FileInputStream(contactsFile)) {
2698                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2699                             .withStream(contactsFileStream)
2700                             .withContentType("application/octet-stream")
2701                             .withLength(contactsFile.length())
2702                             .build();
2703
2704                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2705                 }
2706             }
2707         } finally {
2708             try {
2709                 Files.delete(contactsFile.toPath());
2710             } catch (IOException e) {
2711                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2712             }
2713         }
2714     }
2715
2716     void sendBlockedList() throws IOException, UntrustedIdentityException {
2717         var addresses = new ArrayList<SignalServiceAddress>();
2718         for (var record : account.getContactStore().getContacts()) {
2719             if (record.second().isBlocked()) {
2720                 addresses.add(resolveSignalServiceAddress(record.first()));
2721             }
2722         }
2723         var groupIds = new ArrayList<byte[]>();
2724         for (var record : getGroups()) {
2725             if (record.isBlocked()) {
2726                 groupIds.add(record.getGroupId().serialize());
2727             }
2728         }
2729         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2730     }
2731
2732     private void sendVerifiedMessage(
2733             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2734     ) throws IOException, UntrustedIdentityException {
2735         var verifiedMessage = new VerifiedMessage(destination,
2736                 identityKey,
2737                 trustLevel.toVerifiedState(),
2738                 System.currentTimeMillis());
2739         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2740     }
2741
2742     public List<Pair<RecipientId, Contact>> getContacts() {
2743         return account.getContactStore().getContacts();
2744     }
2745
2746     public String getContactOrProfileName(String number) throws InvalidNumberException {
2747         final var recipientId = canonicalizeAndResolveRecipient(number);
2748         final var recipient = account.getRecipientStore().getRecipient(recipientId);
2749         if (recipient == null) {
2750             return null;
2751         }
2752
2753         if (recipient.getContact() != null && !Util.isEmpty(recipient.getContact().getName())) {
2754             return recipient.getContact().getName();
2755         }
2756
2757         if (recipient.getProfile() != null && recipient.getProfile() != null) {
2758             return recipient.getProfile().getDisplayName();
2759         }
2760
2761         return null;
2762     }
2763
2764     public GroupInfo getGroup(GroupId groupId) {
2765         return getGroup(groupId, false);
2766     }
2767
2768     public GroupInfo getGroup(GroupId groupId, boolean forceUpdate) {
2769         final var group = account.getGroupStore().getGroup(groupId);
2770         if (group instanceof GroupInfoV2 && (forceUpdate || ((GroupInfoV2) group).getGroup() == null)) {
2771             final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(((GroupInfoV2) group).getMasterKey());
2772             ((GroupInfoV2) group).setGroup(groupV2Helper.getDecryptedGroup(groupSecretParams), this::resolveRecipient);
2773             account.getGroupStore().updateGroup(group);
2774         }
2775         return group;
2776     }
2777
2778     public List<IdentityInfo> getIdentities() {
2779         return account.getIdentityKeyStore().getIdentities();
2780     }
2781
2782     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2783         final var identity = account.getIdentityKeyStore().getIdentity(canonicalizeAndResolveRecipient(number));
2784         return identity == null ? List.of() : List.of(identity);
2785     }
2786
2787     /**
2788      * Trust this the identity with this fingerprint
2789      *
2790      * @param name        username of the identity
2791      * @param fingerprint Fingerprint
2792      */
2793     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2794         var recipientId = canonicalizeAndResolveRecipient(name);
2795         return trustIdentity(recipientId,
2796                 identityKey -> Arrays.equals(identityKey.serialize(), fingerprint),
2797                 TrustLevel.TRUSTED_VERIFIED);
2798     }
2799
2800     /**
2801      * Trust this the identity with this safety number
2802      *
2803      * @param name         username of the identity
2804      * @param safetyNumber Safety number
2805      */
2806     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2807         var recipientId = canonicalizeAndResolveRecipient(name);
2808         var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2809         return trustIdentity(recipientId,
2810                 identityKey -> safetyNumber.equals(computeSafetyNumber(address, identityKey)),
2811                 TrustLevel.TRUSTED_VERIFIED);
2812     }
2813
2814     /**
2815      * Trust all keys of this identity without verification
2816      *
2817      * @param name username of the identity
2818      */
2819     public boolean trustIdentityAllKeys(String name) throws InvalidNumberException {
2820         var recipientId = canonicalizeAndResolveRecipient(name);
2821         return trustIdentity(recipientId, identityKey -> true, TrustLevel.TRUSTED_UNVERIFIED);
2822     }
2823
2824     private boolean trustIdentity(
2825             RecipientId recipientId, Function<IdentityKey, Boolean> verifier, TrustLevel trustLevel
2826     ) {
2827         var identity = account.getIdentityKeyStore().getIdentity(recipientId);
2828         if (identity == null) {
2829             return false;
2830         }
2831
2832         if (!verifier.apply(identity.getIdentityKey())) {
2833             return false;
2834         }
2835
2836         account.getIdentityKeyStore().setIdentityTrustLevel(recipientId, identity.getIdentityKey(), trustLevel);
2837         try {
2838             var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2839             sendVerifiedMessage(address, identity.getIdentityKey(), trustLevel);
2840         } catch (IOException | UntrustedIdentityException e) {
2841             logger.warn("Failed to send verification sync message: {}", e.getMessage());
2842         }
2843
2844         return true;
2845     }
2846
2847     public String computeSafetyNumber(
2848             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2849     ) {
2850         return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
2851                 account.getSelfAddress(),
2852                 getIdentityKeyPair().getPublicKey(),
2853                 theirAddress,
2854                 theirIdentityKey);
2855     }
2856
2857     @Deprecated
2858     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2859         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2860
2861         return resolveSignalServiceAddress(address);
2862     }
2863
2864     @Deprecated
2865     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2866         if (address.matches(account.getSelfAddress())) {
2867             return account.getSelfAddress();
2868         }
2869
2870         return account.getRecipientStore().resolveServiceAddress(address);
2871     }
2872
2873     public SignalServiceAddress resolveSignalServiceAddress(RecipientId recipientId) {
2874         return account.getRecipientStore().resolveServiceAddress(recipientId);
2875     }
2876
2877     public RecipientId canonicalizeAndResolveRecipient(String identifier) throws InvalidNumberException {
2878         var canonicalizedNumber = UuidUtil.isUuid(identifier)
2879                 ? identifier
2880                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2881
2882         return resolveRecipient(canonicalizedNumber);
2883     }
2884
2885     private RecipientId resolveRecipient(final String identifier) {
2886         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2887
2888         return resolveRecipient(address);
2889     }
2890
2891     public RecipientId resolveRecipient(SignalServiceAddress address) {
2892         return account.getRecipientStore().resolveRecipient(address);
2893     }
2894
2895     private RecipientId resolveRecipientTrusted(SignalServiceAddress address) {
2896         return account.getRecipientStore().resolveRecipientTrusted(address);
2897     }
2898
2899     private void enqueueJob(Job job) {
2900         var context = new Context(account,
2901                 dependencies.getAccountManager(),
2902                 dependencies.getMessageReceiver(),
2903                 stickerPackStore);
2904         job.run(context);
2905     }
2906
2907     @Override
2908     public void close() throws IOException {
2909         close(true);
2910     }
2911
2912     void close(boolean closeAccount) throws IOException {
2913         executor.shutdown();
2914
2915         dependencies.getSignalWebSocket().disconnect();
2916
2917         if (closeAccount && account != null) {
2918             account.close();
2919         }
2920         account = null;
2921     }
2922
2923     public interface ReceiveMessageHandler {
2924
2925         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2926     }
2927 }