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.config.ServiceConfig;
  20 import org.asamk.signal.manager.config.ServiceEnvironment;
  21 import org.asamk.signal.manager.config.ServiceEnvironmentConfig;
  22 import org.asamk.signal.manager.groups.GroupId;
  23 import org.asamk.signal.manager.groups.GroupIdV1;
  24 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  25 import org.asamk.signal.manager.groups.GroupNotFoundException;
  26 import org.asamk.signal.manager.groups.GroupUtils;
  27 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  28 import org.asamk.signal.manager.helper.GroupHelper;
  29 import org.asamk.signal.manager.helper.PinHelper;
  30 import org.asamk.signal.manager.helper.ProfileHelper;
  31 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  32 import org.asamk.signal.manager.storage.SignalAccount;
  33 import org.asamk.signal.manager.storage.contacts.ContactInfo;
  34 import org.asamk.signal.manager.storage.groups.GroupInfo;
  35 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  36 import org.asamk.signal.manager.storage.groups.GroupInfoV2;
  37 import org.asamk.signal.manager.storage.messageCache.CachedMessage;
  38 import org.asamk.signal.manager.storage.profiles.SignalProfile;
  39 import org.asamk.signal.manager.storage.protocol.IdentityInfo;
  40 import org.asamk.signal.manager.storage.stickers.Sticker;
  41 import org.asamk.signal.manager.util.AttachmentUtils;
  42 import org.asamk.signal.manager.util.IOUtils;
  43 import org.asamk.signal.manager.util.KeyUtils;
  44 import org.asamk.signal.manager.util.ProfileUtils;
  45 import org.asamk.signal.manager.util.StickerUtils;
  46 import org.asamk.signal.manager.util.Utils;
  47 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  48 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  49 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  50 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  51 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  52 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  53 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  54 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  55 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  56 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  57 import org.signal.libsignal.metadata.SelfSendException;
  58 import org.signal.libsignal.metadata.certificate.CertificateValidator;
  59 import org.signal.storageservice.protos.groups.GroupChange;
  60 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
  61 import org.signal.zkgroup.InvalidInputException;
  62 import org.signal.zkgroup.VerificationFailedException;
  63 import org.signal.zkgroup.groups.GroupMasterKey;
  64 import org.signal.zkgroup.groups.GroupSecretParams;
  65 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  66 import org.signal.zkgroup.profiles.ProfileKey;
  67 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  68 import org.slf4j.Logger;
  69 import org.slf4j.LoggerFactory;
  70 import org.whispersystems.libsignal.IdentityKey;
  71 import org.whispersystems.libsignal.IdentityKeyPair;
  72 import org.whispersystems.libsignal.InvalidKeyException;
  73 import org.whispersystems.libsignal.InvalidMessageException;
  74 import org.whispersystems.libsignal.ecc.ECPublicKey;
  75 import org.whispersystems.libsignal.state.PreKeyRecord;
  76 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  77 import org.whispersystems.libsignal.util.Pair;
  78 import org.whispersystems.libsignal.util.guava.Optional;
  79 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  80 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  81 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  82 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  83 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  84 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  85 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  86 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  87 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
  88 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  89 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  90 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  91 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  92 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  93 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  94 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  95 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  96 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  97 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  98 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  99 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
 100 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
 101 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
 102 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 103 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 104 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 105 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 106 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 107 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 108 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 109 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 110 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 111 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 112 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 113 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 114 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 115 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 116 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 117 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 118 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 119 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 120 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
 121 import org.whispersystems.signalservice.api.util.SleepTimer;
 122 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 123 import org.whispersystems.signalservice.api.util.UuidUtil;
 124 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 125 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 126 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 127 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 128 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 129 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 130 import org.whispersystems.signalservice.internal.util.Hex;
 131 import org.whispersystems.signalservice.internal.util.Util;
 132
 133 import java.io.Closeable;
 134 import java.io.File;
 135 import java.io.FileInputStream;
 136 import java.io.FileOutputStream;
 137 import java.io.IOException;
 138 import java.io.InputStream;
 139 import java.io.OutputStream;
 140 import java.net.URI;
 141 import java.net.URISyntaxException;
 142 import java.net.URLEncoder;
 143 import java.nio.charset.StandardCharsets;
 144 import java.nio.file.Files;
 145 import java.security.SignatureException;
 146 import java.util.ArrayList;
 147 import java.util.Arrays;
 148 import java.util.Collection;
 149 import java.util.Date;
 150 import java.util.HashSet;
 151 import java.util.List;
 152 import java.util.Map;
 153 import java.util.Set;
 154 import java.util.UUID;
 155 import java.util.concurrent.ExecutorService;
 156 import java.util.concurrent.Executors;
 157 import java.util.concurrent.TimeUnit;
 158 import java.util.concurrent.TimeoutException;
 159 import java.util.stream.Collectors;
 160
 161 import static org.asamk.signal.manager.config.ServiceConfig.capabilities;
 162
 163 public class Manager implements Closeable {
 164
 165     private final static Logger logger = LoggerFactory.getLogger(Manager.class);
 166
 167     private final CertificateValidator certificateValidator;
 168
 169     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
 170     private final String userAgent;
 171
 172     private SignalAccount account;
 173     private final SignalServiceAccountManager accountManager;
 174     private final GroupsV2Api groupsV2Api;
 175     private final GroupsV2Operations groupsV2Operations;
 176     private final SignalServiceMessageReceiver messageReceiver;
 177     private final ClientZkProfileOperations clientZkProfileOperations;
 178
 179     private final ExecutorService executor = Executors.newCachedThreadPool();
 180
 181     private SignalServiceMessagePipe messagePipe = null;
 182     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 183
 184     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 185     private final ProfileHelper profileHelper;
 186     private final GroupHelper groupHelper;
 187     private final PinHelper pinHelper;
 188     private final AvatarStore avatarStore;
 189     private final AttachmentStore attachmentStore;
 190
 191     Manager(
 192             SignalAccount account,
 193             PathConfig pathConfig,
 194             ServiceEnvironmentConfig serviceEnvironmentConfig,
 195             String userAgent
 196     ) {
 197         this.account = account;
 198         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 199         this.certificateValidator = new CertificateValidator(serviceEnvironmentConfig.getUnidentifiedSenderTrustRoot());
 200         this.userAgent = userAgent;
 201         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 202                 serviceEnvironmentConfig.getSignalServiceConfiguration())) : null;
 203         final SleepTimer timer = new UptimeSleepTimer();
 204         this.accountManager = new SignalServiceAccountManager(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 205                 new DynamicCredentialsProvider(account.getUuid(),
 206                         account.getUsername(),
 207                         account.getPassword(),
 208                         account.getDeviceId()),
 209                 userAgent,
 210                 groupsV2Operations,
 211                 ServiceConfig.AUTOMATIC_NETWORK_RETRY,
 212                 timer);
 213         this.groupsV2Api = accountManager.getGroupsV2Api();
 214         final var keyBackupService = accountManager.getKeyBackupService(ServiceConfig.getIasKeyStore(),
 215                 serviceEnvironmentConfig.getKeyBackupConfig().getEnclaveName(),
 216                 serviceEnvironmentConfig.getKeyBackupConfig().getServiceId(),
 217                 serviceEnvironmentConfig.getKeyBackupConfig().getMrenclave(),
 218                 10);
 219
 220         this.pinHelper = new PinHelper(keyBackupService);
 221         this.clientZkProfileOperations = capabilities.isGv2()
 222                 ? ClientZkOperations.create(serviceEnvironmentConfig.getSignalServiceConfiguration())
 223                 .getProfileOperations()
 224                 : null;
 225         this.messageReceiver = new SignalServiceMessageReceiver(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 226                 account.getUuid(),
 227                 account.getUsername(),
 228                 account.getPassword(),
 229                 account.getDeviceId(),
 230                 userAgent,
 231                 null,
 232                 timer,
 233                 clientZkProfileOperations,
 234                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 235
 236         this.account.setResolver(this::resolveSignalServiceAddress);
 237
 238         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 239                 account.getProfileStore()::getProfileKey,
 240                 this::getRecipientProfile,
 241                 this::getSenderCertificate);
 242         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 243                 unidentifiedAccessHelper::getAccessFor,
 244                 unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
 245                 () -> messageReceiver);
 246         this.groupHelper = new GroupHelper(this::getRecipientProfileKeyCredential,
 247                 this::getRecipientProfile,
 248                 account::getSelfAddress,
 249                 groupsV2Operations,
 250                 groupsV2Api,
 251                 this::getGroupAuthForToday);
 252         this.avatarStore = new AvatarStore(pathConfig.getAvatarsPath());
 253         this.attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
 254     }
 255
 256     public String getUsername() {
 257         return account.getUsername();
 258     }
 259
 260     public SignalServiceAddress getSelfAddress() {
 261         return account.getSelfAddress();
 262     }
 263
 264     private IdentityKeyPair getIdentityKeyPair() {
 265         return account.getSignalProtocolStore().getIdentityKeyPair();
 266     }
 267
 268     public int getDeviceId() {
 269         return account.getDeviceId();
 270     }
 271
 272     public static Manager init(
 273             String username, File settingsPath, ServiceEnvironment serviceEnvironment, String userAgent
 274     ) throws IOException, NotRegisteredException {
 275         var pathConfig = PathConfig.createDefault(settingsPath);
 276
 277         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 278             throw new NotRegisteredException();
 279         }
 280
 281         var account = SignalAccount.load(pathConfig.getDataPath(), username);
 282
 283         if (!account.isRegistered()) {
 284             throw new NotRegisteredException();
 285         }
 286
 287         final var serviceEnvironmentConfig = ServiceConfig.getServiceEnvironmentConfig(serviceEnvironment, userAgent);
 288
 289         return new Manager(account, pathConfig, serviceEnvironmentConfig, userAgent);
 290     }
 291
 292     public static List<String> getAllLocalUsernames(File settingsPath) {
 293         var pathConfig = PathConfig.createDefault(settingsPath);
 294         final var dataPath = pathConfig.getDataPath();
 295         final var files = dataPath.listFiles();
 296
 297         if (files == null) {
 298             return List.of();
 299         }
 300
 301         return Arrays.stream(files)
 302                 .filter(File::isFile)
 303                 .map(File::getName)
 304                 .filter(file -> PhoneNumberFormatter.isValidNumber(file, null))
 305                 .collect(Collectors.toList());
 306     }
 307
 308     public void checkAccountState() throws IOException {
 309         if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 310             refreshPreKeys();
 311             account.save();
 312         }
 313         if (account.getUuid() == null) {
 314             account.setUuid(accountManager.getOwnUuid());
 315             account.save();
 316         }
 317         updateAccountAttributes();
 318     }
 319
 320     /**
 321      * This is used for checking a set of phone numbers for registration on Signal
 322      *
 323      * @param numbers The set of phone number in question
 324      * @return A map of numbers to booleans. True if registered, false otherwise. Should never be null
 325      * @throws IOException if its unable to get the contacts to check if they're registered
 326      */
 327     public Map<String, Boolean> areUsersRegistered(Set<String> numbers) throws IOException {
 328         // Note "contactDetails" has no optionals. It only gives us info on users who are registered
 329         var contactDetails = getRegisteredUsers(numbers);
 330
 331         var registeredUsers = contactDetails.keySet();
 332
 333         return numbers.stream().collect(Collectors.toMap(x -> x, registeredUsers::contains));
 334     }
 335
 336     public void updateAccountAttributes() throws IOException {
 337         accountManager.setAccountAttributes(null,
 338                 account.getSignalProtocolStore().getLocalRegistrationId(),
 339                 true,
 340                 // set legacy pin only if no KBS master key is set
 341                 account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
 342                 account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 343                 account.getSelfUnidentifiedAccessKey(),
 344                 account.isUnrestrictedUnidentifiedAccess(),
 345                 capabilities,
 346                 account.isDiscoverableByPhoneNumber());
 347     }
 348
 349     /**
 350      * @param name       if null, the previous name will be kept
 351      * @param about      if null, the previous about text will be kept
 352      * @param aboutEmoji if null, the previous about emoji will be kept
 353      * @param avatar     if avatar is null the image from the local avatar store is used (if present),
 354      *                   if it's Optional.absent(), the avatar will be removed
 355      */
 356     public void setProfile(String name, String about, String aboutEmoji, Optional<File> avatar) throws IOException {
 357         var profileEntry = account.getProfileStore().getProfileEntry(getSelfAddress());
 358         var profile = profileEntry == null ? null : profileEntry.getProfile();
 359         var newProfile = new SignalProfile(profile == null ? null : profile.getIdentityKey(),
 360                 name != null ? name : profile == null || profile.getName() == null ? "" : profile.getName(),
 361                 about != null ? about : profile == null || profile.getAbout() == null ? "" : profile.getAbout(),
 362                 aboutEmoji != null
 363                         ? aboutEmoji
 364                         : profile == null || profile.getAboutEmoji() == null ? "" : profile.getAboutEmoji(),
 365                 profile == null ? null : profile.getUnidentifiedAccess(),
 366                 account.isUnrestrictedUnidentifiedAccess(),
 367                 profile == null ? null : profile.getCapabilities());
 368
 369         try (final var streamDetails = avatar == null
 370                 ? avatarStore.retrieveProfileAvatar(getSelfAddress())
 371                 : avatar.isPresent() ? Utils.createStreamDetailsFromFile(avatar.get()) : null) {
 372             accountManager.setVersionedProfile(account.getUuid(),
 373                     account.getProfileKey(),
 374                     newProfile.getName(),
 375                     newProfile.getAbout(),
 376                     newProfile.getAboutEmoji(),
 377                     streamDetails);
 378         }
 379
 380         if (avatar != null) {
 381             if (avatar.isPresent()) {
 382                 avatarStore.storeProfileAvatar(getSelfAddress(),
 383                         outputStream -> IOUtils.copyFileToStream(avatar.get(), outputStream));
 384             } else {
 385                 avatarStore.deleteProfileAvatar(getSelfAddress());
 386             }
 387         }
 388         account.getProfileStore()
 389                 .updateProfile(getSelfAddress(),
 390                         account.getProfileKey(),
 391                         System.currentTimeMillis(),
 392                         newProfile,
 393                         profileEntry == null ? null : profileEntry.getProfileKeyCredential());
 394
 395         try {
 396             sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
 397         } catch (UntrustedIdentityException ignored) {
 398         }
 399     }
 400
 401     public void unregister() throws IOException {
 402         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 403         // If this is the master device, other users can't send messages to this number anymore.
 404         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 405         accountManager.setGcmId(Optional.absent());
 406         accountManager.deleteAccount();
 407
 408         account.setRegistered(false);
 409         account.save();
 410     }
 411
 412     public List<DeviceInfo> getLinkedDevices() throws IOException {
 413         var devices = accountManager.getDevices();
 414         account.setMultiDevice(devices.size() > 1);
 415         account.save();
 416         return devices;
 417     }
 418
 419     public void removeLinkedDevices(int deviceId) throws IOException {
 420         accountManager.removeDevice(deviceId);
 421         var devices = accountManager.getDevices();
 422         account.setMultiDevice(devices.size() > 1);
 423         account.save();
 424     }
 425
 426     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 427         var info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 428
 429         addDevice(info.deviceIdentifier, info.deviceKey);
 430     }
 431
 432     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 433         var identityKeyPair = getIdentityKeyPair();
 434         var verificationCode = accountManager.getNewDeviceVerificationCode();
 435
 436         accountManager.addDevice(deviceIdentifier,
 437                 deviceKey,
 438                 identityKeyPair,
 439                 Optional.of(account.getProfileKey().serialize()),
 440                 verificationCode);
 441         account.setMultiDevice(true);
 442         account.save();
 443     }
 444
 445     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 446         if (!account.isMasterDevice()) {
 447             throw new RuntimeException("Only master device can set a PIN");
 448         }
 449         if (pin.isPresent()) {
 450             final var masterKey = account.getPinMasterKey() != null
 451                     ? account.getPinMasterKey()
 452                     : KeyUtils.createMasterKey();
 453
 454             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 455
 456             account.setRegistrationLockPin(pin.get());
 457             account.setPinMasterKey(masterKey);
 458         } else {
 459             // Remove legacy registration lock
 460             accountManager.removeRegistrationLockV1();
 461
 462             // Remove KBS Pin
 463             pinHelper.removeRegistrationLockPin();
 464
 465             account.setRegistrationLockPin(null);
 466             account.setPinMasterKey(null);
 467         }
 468         account.save();
 469     }
 470
 471     void refreshPreKeys() throws IOException {
 472         var oneTimePreKeys = generatePreKeys();
 473         final var identityKeyPair = getIdentityKeyPair();
 474         var signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 475
 476         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 477     }
 478
 479     private List<PreKeyRecord> generatePreKeys() {
 480         final var offset = account.getPreKeyIdOffset();
 481
 482         var records = KeyUtils.generatePreKeyRecords(offset, ServiceConfig.PREKEY_BATCH_SIZE);
 483         account.addPreKeys(records);
 484         account.save();
 485
 486         return records;
 487     }
 488
 489     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 490         final var signedPreKeyId = account.getNextSignedPreKeyId();
 491
 492         var record = KeyUtils.generateSignedPreKeyRecord(identityKeyPair, signedPreKeyId);
 493         account.addSignedPreKey(record);
 494         account.save();
 495
 496         return record;
 497     }
 498
 499     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 500         if (messagePipe == null) {
 501             messagePipe = messageReceiver.createMessagePipe();
 502         }
 503         return messagePipe;
 504     }
 505
 506     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 507         if (unidentifiedMessagePipe == null) {
 508             unidentifiedMessagePipe = messageReceiver.createUnidentifiedMessagePipe();
 509         }
 510         return unidentifiedMessagePipe;
 511     }
 512
 513     private SignalServiceMessageSender createMessageSender() {
 514         return new SignalServiceMessageSender(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 515                 account.getUuid(),
 516                 account.getUsername(),
 517                 account.getPassword(),
 518                 account.getDeviceId(),
 519                 account.getSignalProtocolStore(),
 520                 userAgent,
 521                 account.isMultiDevice(),
 522                 Optional.fromNullable(messagePipe),
 523                 Optional.fromNullable(unidentifiedMessagePipe),
 524                 Optional.absent(),
 525                 clientZkProfileOperations,
 526                 executor,
 527                 ServiceConfig.MAX_ENVELOPE_SIZE,
 528                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 529     }
 530
 531     private SignalProfile getRecipientProfile(
 532             SignalServiceAddress address
 533     ) {
 534         return getRecipientProfile(address, false);
 535     }
 536
 537     private SignalProfile getRecipientProfile(
 538             SignalServiceAddress address, boolean force
 539     ) {
 540         var profileEntry = account.getProfileStore().getProfileEntry(address);
 541         if (profileEntry == null) {
 542             return null;
 543         }
 544         var now = new Date().getTime();
 545         // Profiles are cached for 24h before retrieving them again
 546         if (!profileEntry.isRequestPending() && (
 547                 force
 548                         || profileEntry.getProfile() == null
 549                         || now - profileEntry.getLastUpdateTimestamp() > 24 * 60 * 60 * 1000
 550         )) {
 551             profileEntry.setRequestPending(true);
 552             final SignalServiceProfile encryptedProfile;
 553             try {
 554                 encryptedProfile = profileHelper.retrieveProfileSync(address, SignalServiceProfile.RequestType.PROFILE)
 555                         .getProfile();
 556             } catch (IOException e) {
 557                 logger.warn("Failed to retrieve profile, ignoring: {}", e.getMessage());
 558                 return null;
 559             } finally {
 560                 profileEntry.setRequestPending(false);
 561             }
 562
 563             final var profileKey = profileEntry.getProfileKey();
 564             final var profile = decryptProfileAndDownloadAvatar(address, profileKey, encryptedProfile);
 565             account.getProfileStore()
 566                     .updateProfile(address, profileKey, now, profile, profileEntry.getProfileKeyCredential());
 567             return profile;
 568         }
 569         return profileEntry.getProfile();
 570     }
 571
 572     private ProfileKeyCredential getRecipientProfileKeyCredential(SignalServiceAddress address) {
 573         var profileEntry = account.getProfileStore().getProfileEntry(address);
 574         if (profileEntry == null) {
 575             return null;
 576         }
 577         if (profileEntry.getProfileKeyCredential() == null) {
 578             ProfileAndCredential profileAndCredential;
 579             try {
 580                 profileAndCredential = profileHelper.retrieveProfileSync(address,
 581                         SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 582             } catch (IOException e) {
 583                 logger.warn("Failed to retrieve profile key credential, ignoring: {}", e.getMessage());
 584                 return null;
 585             }
 586
 587             var now = new Date().getTime();
 588             final var profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 589             final var profile = decryptProfileAndDownloadAvatar(address,
 590                     profileEntry.getProfileKey(),
 591                     profileAndCredential.getProfile());
 592             account.getProfileStore()
 593                     .updateProfile(address, profileEntry.getProfileKey(), now, profile, profileKeyCredential);
 594             return profileKeyCredential;
 595         }
 596         return profileEntry.getProfileKeyCredential();
 597     }
 598
 599     private SignalProfile decryptProfileAndDownloadAvatar(
 600             final SignalServiceAddress address, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 601     ) {
 602         if (encryptedProfile.getAvatar() != null) {
 603             downloadProfileAvatar(address, encryptedProfile.getAvatar(), profileKey);
 604         }
 605
 606         return ProfileUtils.decryptProfile(profileKey, encryptedProfile);
 607     }
 608
 609     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(GroupId groupId) throws IOException {
 610         final var streamDetails = avatarStore.retrieveGroupAvatar(groupId);
 611         if (streamDetails == null) {
 612             return Optional.absent();
 613         }
 614
 615         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 616     }
 617
 618     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(SignalServiceAddress address) throws IOException {
 619         final var streamDetails = avatarStore.retrieveContactAvatar(address);
 620         if (streamDetails == null) {
 621             return Optional.absent();
 622         }
 623
 624         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 625     }
 626
 627     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 628         var g = getGroup(groupId);
 629         if (g == null) {
 630             throw new GroupNotFoundException(groupId);
 631         }
 632         if (!g.isMember(account.getSelfAddress())) {
 633             throw new NotAGroupMemberException(groupId, g.getTitle());
 634         }
 635         return g;
 636     }
 637
 638     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 639         var g = getGroup(groupId);
 640         if (g == null) {
 641             throw new GroupNotFoundException(groupId);
 642         }
 643         if (!g.isMember(account.getSelfAddress()) && !g.isPendingMember(account.getSelfAddress())) {
 644             throw new NotAGroupMemberException(groupId, g.getTitle());
 645         }
 646         return g;
 647     }
 648
 649     public List<GroupInfo> getGroups() {
 650         return account.getGroupStore().getGroups();
 651     }
 652
 653     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 654             String messageText, List<String> attachments, GroupId groupId
 655     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 656         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 657         if (attachments != null) {
 658             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 659         }
 660
 661         return sendGroupMessage(messageBuilder, groupId);
 662     }
 663
 664     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 665             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, GroupId groupId
 666     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 667         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 668                 remove,
 669                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 670                 targetSentTimestamp);
 671         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
 672
 673         return sendGroupMessage(messageBuilder, groupId);
 674     }
 675
 676     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 677             SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
 678     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 679         final var g = getGroupForSending(groupId);
 680
 681         GroupUtils.setGroupContext(messageBuilder, g);
 682         messageBuilder.withExpiration(g.getMessageExpirationTime());
 683
 684         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 685     }
 686
 687     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(GroupId groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 688         SignalServiceDataMessage.Builder messageBuilder;
 689
 690         final var g = getGroupForUpdating(groupId);
 691         if (g instanceof GroupInfoV1) {
 692             var groupInfoV1 = (GroupInfoV1) g;
 693             var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT).withId(groupId.serialize()).build();
 694             messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 695             groupInfoV1.removeMember(account.getSelfAddress());
 696             account.getGroupStore().updateGroup(groupInfoV1);
 697         } else {
 698             final var groupInfoV2 = (GroupInfoV2) g;
 699             final var groupGroupChangePair = groupHelper.leaveGroup(groupInfoV2);
 700             groupInfoV2.setGroup(groupGroupChangePair.first());
 701             messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 702             account.getGroupStore().updateGroup(groupInfoV2);
 703         }
 704
 705         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 706     }
 707
 708     public Pair<GroupId, List<SendMessageResult>> updateGroup(
 709             GroupId groupId, String name, List<String> members, File avatarFile
 710     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 711         return sendUpdateGroupMessage(groupId,
 712                 name,
 713                 members == null ? null : getSignalServiceAddresses(members),
 714                 avatarFile);
 715     }
 716
 717     private Pair<GroupId, List<SendMessageResult>> sendUpdateGroupMessage(
 718             GroupId groupId, String name, Collection<SignalServiceAddress> members, File avatarFile
 719     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 720         GroupInfo g;
 721         SignalServiceDataMessage.Builder messageBuilder;
 722         if (groupId == null) {
 723             // Create new group
 724             var gv2 = groupHelper.createGroupV2(name == null ? "" : name,
 725                     members == null ? List.of() : members,
 726                     avatarFile);
 727             if (gv2 == null) {
 728                 var gv1 = new GroupInfoV1(GroupIdV1.createRandom());
 729                 gv1.addMembers(List.of(account.getSelfAddress()));
 730                 updateGroupV1(gv1, name, members, avatarFile);
 731                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 732                 g = gv1;
 733             } else {
 734                 if (avatarFile != null) {
 735                     avatarStore.storeGroupAvatar(gv2.getGroupId(),
 736                             outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 737                 }
 738                 messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 739                 g = gv2;
 740             }
 741         } else {
 742             var group = getGroupForUpdating(groupId);
 743             if (group instanceof GroupInfoV2) {
 744                 final var groupInfoV2 = (GroupInfoV2) group;
 745
 746                 Pair<Long, List<SendMessageResult>> result = null;
 747                 if (groupInfoV2.isPendingMember(getSelfAddress())) {
 748                     var groupGroupChangePair = groupHelper.acceptInvite(groupInfoV2);
 749                     result = sendUpdateGroupMessage(groupInfoV2,
 750                             groupGroupChangePair.first(),
 751                             groupGroupChangePair.second());
 752                 }
 753
 754                 if (members != null) {
 755                     final var newMembers = new HashSet<>(members);
 756                     newMembers.removeAll(group.getMembers()
 757                             .stream()
 758                             .map(this::resolveSignalServiceAddress)
 759                             .collect(Collectors.toSet()));
 760                     if (newMembers.size() > 0) {
 761                         var groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2, newMembers);
 762                         result = sendUpdateGroupMessage(groupInfoV2,
 763                                 groupGroupChangePair.first(),
 764                                 groupGroupChangePair.second());
 765                     }
 766                 }
 767                 if (result == null || name != null || avatarFile != null) {
 768                     var groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2, name, avatarFile);
 769                     if (avatarFile != null) {
 770                         avatarStore.storeGroupAvatar(groupInfoV2.getGroupId(),
 771                                 outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 772                     }
 773                     result = sendUpdateGroupMessage(groupInfoV2,
 774                             groupGroupChangePair.first(),
 775                             groupGroupChangePair.second());
 776                 }
 777
 778                 return new Pair<>(group.getGroupId(), result.second());
 779             } else {
 780                 var gv1 = (GroupInfoV1) group;
 781                 updateGroupV1(gv1, name, members, avatarFile);
 782                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 783                 g = gv1;
 784             }
 785         }
 786
 787         account.getGroupStore().updateGroup(g);
 788
 789         final var result = sendMessage(messageBuilder, g.getMembersIncludingPendingWithout(account.getSelfAddress()));
 790         return new Pair<>(g.getGroupId(), result.second());
 791     }
 792
 793     private void updateGroupV1(
 794             final GroupInfoV1 g,
 795             final String name,
 796             final Collection<SignalServiceAddress> members,
 797             final File avatarFile
 798     ) throws IOException {
 799         if (name != null) {
 800             g.name = name;
 801         }
 802
 803         if (members != null) {
 804             final var newE164Members = new HashSet<String>();
 805             for (var member : members) {
 806                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 807                     continue;
 808                 }
 809                 newE164Members.add(member.getNumber().get());
 810             }
 811
 812             final var registeredUsers = getRegisteredUsers(newE164Members);
 813             if (registeredUsers.size() != newE164Members.size()) {
 814                 // Some of the new members are not registered on Signal
 815                 newE164Members.removeAll(registeredUsers.keySet());
 816                 throw new IOException("Failed to add members "
 817                         + String.join(", ", newE164Members)
 818                         + " to group: Not registered on Signal");
 819             }
 820
 821             g.addMembers(members);
 822         }
 823
 824         if (avatarFile != null) {
 825             avatarStore.storeGroupAvatar(g.getGroupId(),
 826                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 827         }
 828     }
 829
 830     public Pair<GroupId, List<SendMessageResult>> joinGroup(
 831             GroupInviteLinkUrl inviteLinkUrl
 832     ) throws IOException, GroupLinkNotActiveException {
 833         return sendJoinGroupMessage(inviteLinkUrl);
 834     }
 835
 836     private Pair<GroupId, List<SendMessageResult>> sendJoinGroupMessage(
 837             GroupInviteLinkUrl inviteLinkUrl
 838     ) throws IOException, GroupLinkNotActiveException {
 839         final var groupJoinInfo = groupHelper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
 840                 inviteLinkUrl.getPassword());
 841         final var groupChange = groupHelper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
 842                 inviteLinkUrl.getPassword(),
 843                 groupJoinInfo);
 844         final var group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
 845                 groupJoinInfo.getRevision() + 1,
 846                 groupChange.toByteArray());
 847
 848         if (group.getGroup() == null) {
 849             // Only requested member, can't send update to group members
 850             return new Pair<>(group.getGroupId(), List.of());
 851         }
 852
 853         final var result = sendUpdateGroupMessage(group, group.getGroup(), groupChange);
 854
 855         return new Pair<>(group.getGroupId(), result.second());
 856     }
 857
 858     private static int currentTimeDays() {
 859         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
 860     }
 861
 862     private GroupsV2AuthorizationString getGroupAuthForToday(
 863             final GroupSecretParams groupSecretParams
 864     ) throws IOException {
 865         final var today = currentTimeDays();
 866         // Returns credentials for the next 7 days
 867         final var credentials = groupsV2Api.getCredentials(today);
 868         // TODO cache credentials until they expire
 869         var authCredentialResponse = credentials.get(today);
 870         try {
 871             return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
 872                     today,
 873                     groupSecretParams,
 874                     authCredentialResponse);
 875         } catch (VerificationFailedException e) {
 876             throw new IOException(e);
 877         }
 878     }
 879
 880     private Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 881             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
 882     ) throws IOException {
 883         group.setGroup(newDecryptedGroup);
 884         final var messageBuilder = getGroupUpdateMessageBuilder(group, groupChange.toByteArray());
 885         account.getGroupStore().updateGroup(group);
 886         return sendMessage(messageBuilder, group.getMembersIncludingPendingWithout(account.getSelfAddress()));
 887     }
 888
 889     Pair<Long, List<SendMessageResult>> sendGroupInfoMessage(
 890             GroupIdV1 groupId, SignalServiceAddress recipient
 891     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 892         GroupInfoV1 g;
 893         var group = getGroupForSending(groupId);
 894         if (!(group instanceof GroupInfoV1)) {
 895             throw new RuntimeException("Received an invalid group request for a v2 group!");
 896         }
 897         g = (GroupInfoV1) group;
 898
 899         if (!g.isMember(recipient)) {
 900             throw new NotAGroupMemberException(groupId, g.name);
 901         }
 902
 903         var messageBuilder = getGroupUpdateMessageBuilder(g);
 904
 905         // Send group message only to the recipient who requested it
 906         return sendMessage(messageBuilder, List.of(recipient));
 907     }
 908
 909     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
 910         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 911                 .withId(g.getGroupId().serialize())
 912                 .withName(g.name)
 913                 .withMembers(new ArrayList<>(g.getMembers()));
 914
 915         try {
 916             final var attachment = createGroupAvatarAttachment(g.getGroupId());
 917             if (attachment.isPresent()) {
 918                 group.withAvatar(attachment.get());
 919             }
 920         } catch (IOException e) {
 921             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
 922         }
 923
 924         return SignalServiceDataMessage.newBuilder()
 925                 .asGroupMessage(group.build())
 926                 .withExpiration(g.getMessageExpirationTime());
 927     }
 928
 929     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
 930         var group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
 931                 .withRevision(g.getGroup().getRevision())
 932                 .withSignedGroupChange(signedGroupChange);
 933         return SignalServiceDataMessage.newBuilder()
 934                 .asGroupMessage(group.build())
 935                 .withExpiration(g.getMessageExpirationTime());
 936     }
 937
 938     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
 939             GroupIdV1 groupId, SignalServiceAddress recipient
 940     ) throws IOException {
 941         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO).withId(groupId.serialize());
 942
 943         var messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group.build());
 944
 945         // Send group info request message to the recipient who sent us a message with this groupId
 946         return sendMessage(messageBuilder, List.of(recipient));
 947     }
 948
 949     void sendReceipt(
 950             SignalServiceAddress remoteAddress, long messageId
 951     ) throws IOException, UntrustedIdentityException {
 952         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 953                 List.of(messageId),
 954                 System.currentTimeMillis());
 955
 956         createMessageSender().sendReceipt(remoteAddress,
 957                 unidentifiedAccessHelper.getAccessFor(remoteAddress),
 958                 receiptMessage);
 959     }
 960
 961     public Pair<Long, List<SendMessageResult>> sendMessage(
 962             String messageText, List<String> attachments, List<String> recipients
 963     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
 964         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 965         if (attachments != null) {
 966             var attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
 967
 968             // Upload attachments here, so we only upload once even for multiple recipients
 969             var messageSender = createMessageSender();
 970             var attachmentPointers = new ArrayList<SignalServiceAttachment>(attachmentStreams.size());
 971             for (var attachment : attachmentStreams) {
 972                 if (attachment.isStream()) {
 973                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 974                 } else if (attachment.isPointer()) {
 975                     attachmentPointers.add(attachment.asPointer());
 976                 }
 977             }
 978
 979             messageBuilder.withAttachments(attachmentPointers);
 980         }
 981         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
 982     }
 983
 984     public Pair<Long, SendMessageResult> sendSelfMessage(
 985             String messageText, List<String> attachments
 986     ) throws IOException, AttachmentInvalidException {
 987         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 988         if (attachments != null) {
 989             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 990         }
 991         return sendSelfMessage(messageBuilder);
 992     }
 993
 994     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
 995             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
 996     ) throws IOException, InvalidNumberException {
 997         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 998                 remove,
 999                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
1000                 targetSentTimestamp);
1001         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
1002         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1003     }
1004
1005     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1006         var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
1007
1008         final var signalServiceAddresses = getSignalServiceAddresses(recipients);
1009         try {
1010             return sendMessage(messageBuilder, signalServiceAddresses);
1011         } catch (Exception e) {
1012             for (var address : signalServiceAddresses) {
1013                 handleEndSession(address);
1014             }
1015             account.save();
1016             throw e;
1017         }
1018     }
1019
1020     public String getContactName(String number) throws InvalidNumberException {
1021         var contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
1022         if (contact == null) {
1023             return "";
1024         } else {
1025             return contact.name;
1026         }
1027     }
1028
1029     public void setContactName(String number, String name) throws InvalidNumberException {
1030         final var address = canonicalizeAndResolveSignalServiceAddress(number);
1031         var contact = account.getContactStore().getContact(address);
1032         if (contact == null) {
1033             contact = new ContactInfo(address);
1034         }
1035         contact.name = name;
1036         account.getContactStore().updateContact(contact);
1037         account.save();
1038     }
1039
1040     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
1041         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
1042     }
1043
1044     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
1045         var contact = account.getContactStore().getContact(address);
1046         if (contact == null) {
1047             contact = new ContactInfo(address);
1048         }
1049         contact.blocked = blocked;
1050         account.getContactStore().updateContact(contact);
1051         account.save();
1052     }
1053
1054     public void setGroupBlocked(final GroupId groupId, final boolean blocked) throws GroupNotFoundException {
1055         var group = getGroup(groupId);
1056         if (group == null) {
1057             throw new GroupNotFoundException(groupId);
1058         }
1059
1060         group.setBlocked(blocked);
1061         account.getGroupStore().updateGroup(group);
1062         account.save();
1063     }
1064
1065     /**
1066      * Change the expiration timer for a contact
1067      */
1068     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
1069         var contact = account.getContactStore().getContact(address);
1070         contact.messageExpirationTime = messageExpirationTimer;
1071         account.getContactStore().updateContact(contact);
1072         sendExpirationTimerUpdate(address);
1073         account.save();
1074     }
1075
1076     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
1077         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
1078         sendMessage(messageBuilder, List.of(address));
1079     }
1080
1081     /**
1082      * Change the expiration timer for a contact
1083      */
1084     public void setExpirationTimer(
1085             String number, int messageExpirationTimer
1086     ) throws IOException, InvalidNumberException {
1087         var address = canonicalizeAndResolveSignalServiceAddress(number);
1088         setExpirationTimer(address, messageExpirationTimer);
1089     }
1090
1091     /**
1092      * Change the expiration timer for a group
1093      */
1094     public void setExpirationTimer(GroupId groupId, int messageExpirationTimer) {
1095         var g = getGroup(groupId);
1096         if (g instanceof GroupInfoV1) {
1097             var groupInfoV1 = (GroupInfoV1) g;
1098             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1099             account.getGroupStore().updateGroup(groupInfoV1);
1100         } else {
1101             throw new RuntimeException("TODO Not implemented!");
1102         }
1103     }
1104
1105     /**
1106      * Upload the sticker pack from path.
1107      *
1108      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1109      * @return if successful, returns the URL to install the sticker pack in the signal app
1110      */
1111     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1112         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
1113
1114         var messageSender = createMessageSender();
1115
1116         var packKey = KeyUtils.createStickerUploadKey();
1117         var packId = messageSender.uploadStickerManifest(manifest, packKey);
1118
1119         var sticker = new Sticker(Hex.fromStringCondensed(packId), packKey);
1120         account.getStickerStore().updateSticker(sticker);
1121         account.save();
1122
1123         try {
1124             return new URI("https",
1125                     "signal.art",
1126                     "/addstickers/",
1127                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1128                             Hex.toStringCondensed(packKey),
1129                             StandardCharsets.UTF_8)).toString();
1130         } catch (URISyntaxException e) {
1131             throw new AssertionError(e);
1132         }
1133     }
1134
1135     void requestSyncGroups() throws IOException {
1136         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1137                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1138                 .build();
1139         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1140         try {
1141             sendSyncMessage(message);
1142         } catch (UntrustedIdentityException e) {
1143             throw new AssertionError(e);
1144         }
1145     }
1146
1147     void requestSyncContacts() throws IOException {
1148         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1149                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1150                 .build();
1151         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1152         try {
1153             sendSyncMessage(message);
1154         } catch (UntrustedIdentityException e) {
1155             throw new AssertionError(e);
1156         }
1157     }
1158
1159     void requestSyncBlocked() throws IOException {
1160         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1161                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1162                 .build();
1163         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1164         try {
1165             sendSyncMessage(message);
1166         } catch (UntrustedIdentityException e) {
1167             throw new AssertionError(e);
1168         }
1169     }
1170
1171     void requestSyncConfiguration() throws IOException {
1172         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1173                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1174                 .build();
1175         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1176         try {
1177             sendSyncMessage(message);
1178         } catch (UntrustedIdentityException e) {
1179             throw new AssertionError(e);
1180         }
1181     }
1182
1183     void requestSyncKeys() throws IOException {
1184         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1185                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
1186                 .build();
1187         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1188         try {
1189             sendSyncMessage(message);
1190         } catch (UntrustedIdentityException e) {
1191             throw new AssertionError(e);
1192         }
1193     }
1194
1195     private byte[] getSenderCertificate() {
1196         // TODO support UUID capable sender certificates
1197         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1198         byte[] certificate;
1199         try {
1200             certificate = accountManager.getSenderCertificate();
1201         } catch (IOException e) {
1202             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1203             return null;
1204         }
1205         // TODO cache for a day
1206         return certificate;
1207     }
1208
1209     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1210         var messageSender = createMessageSender();
1211         try {
1212             messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1213         } catch (UntrustedIdentityException e) {
1214             account.getSignalProtocolStore()
1215                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1216                             e.getIdentityKey(),
1217                             TrustLevel.UNTRUSTED);
1218             throw e;
1219         }
1220     }
1221
1222     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1223         final var signalServiceAddresses = new HashSet<SignalServiceAddress>(numbers.size());
1224         final var addressesMissingUuid = new HashSet<SignalServiceAddress>();
1225
1226         for (var number : numbers) {
1227             final var resolvedAddress = canonicalizeAndResolveSignalServiceAddress(number);
1228             if (resolvedAddress.getUuid().isPresent()) {
1229                 signalServiceAddresses.add(resolvedAddress);
1230             } else {
1231                 addressesMissingUuid.add(resolvedAddress);
1232             }
1233         }
1234
1235         final var numbersMissingUuid = addressesMissingUuid.stream()
1236                 .map(a -> a.getNumber().get())
1237                 .collect(Collectors.toSet());
1238         Map<String, UUID> registeredUsers;
1239         try {
1240             registeredUsers = getRegisteredUsers(numbersMissingUuid);
1241         } catch (IOException e) {
1242             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1243             registeredUsers = Map.of();
1244         }
1245
1246         for (var address : addressesMissingUuid) {
1247             final var number = address.getNumber().get();
1248             if (registeredUsers.containsKey(number)) {
1249                 final var newAddress = resolveSignalServiceAddress(new SignalServiceAddress(registeredUsers.get(number),
1250                         number));
1251                 signalServiceAddresses.add(newAddress);
1252             } else {
1253                 signalServiceAddresses.add(address);
1254             }
1255         }
1256
1257         return signalServiceAddresses;
1258     }
1259
1260     private Map<String, UUID> getRegisteredUsers(final Set<String> numbersMissingUuid) throws IOException {
1261         try {
1262             return accountManager.getRegisteredUsers(ServiceConfig.getIasKeyStore(),
1263                     numbersMissingUuid,
1264                     serviceEnvironmentConfig.getCdsMrenclave());
1265         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
1266             throw new IOException(e);
1267         }
1268     }
1269
1270     private Pair<Long, List<SendMessageResult>> sendMessage(
1271             SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients
1272     ) throws IOException {
1273         recipients = recipients.stream().map(this::resolveSignalServiceAddress).collect(Collectors.toSet());
1274         final var timestamp = System.currentTimeMillis();
1275         messageBuilder.withTimestamp(timestamp);
1276         getOrCreateMessagePipe();
1277         getOrCreateUnidentifiedMessagePipe();
1278         SignalServiceDataMessage message = null;
1279         try {
1280             message = messageBuilder.build();
1281             if (message.getGroupContext().isPresent()) {
1282                 try {
1283                     var messageSender = createMessageSender();
1284                     final var isRecipientUpdate = false;
1285                     var result = messageSender.sendMessage(new ArrayList<>(recipients),
1286                             unidentifiedAccessHelper.getAccessFor(recipients),
1287                             isRecipientUpdate,
1288                             message);
1289                     for (var r : result) {
1290                         if (r.getIdentityFailure() != null) {
1291                             account.getSignalProtocolStore()
1292                                     .saveIdentity(r.getAddress(),
1293                                             r.getIdentityFailure().getIdentityKey(),
1294                                             TrustLevel.UNTRUSTED);
1295                         }
1296                     }
1297                     return new Pair<>(timestamp, result);
1298                 } catch (UntrustedIdentityException e) {
1299                     account.getSignalProtocolStore()
1300                             .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1301                                     e.getIdentityKey(),
1302                                     TrustLevel.UNTRUSTED);
1303                     return new Pair<>(timestamp, List.of());
1304                 }
1305             } else {
1306                 // Send to all individually, so sync messages are sent correctly
1307                 messageBuilder.withProfileKey(account.getProfileKey().serialize());
1308                 var results = new ArrayList<SendMessageResult>(recipients.size());
1309                 for (var address : recipients) {
1310                     final var contact = account.getContactStore().getContact(address);
1311                     final var expirationTime = contact != null ? contact.messageExpirationTime : 0;
1312                     messageBuilder.withExpiration(expirationTime);
1313                     message = messageBuilder.build();
1314                     results.add(sendMessage(address, message));
1315                 }
1316                 return new Pair<>(timestamp, results);
1317             }
1318         } finally {
1319             if (message != null && message.isEndSession()) {
1320                 for (var recipient : recipients) {
1321                     handleEndSession(recipient);
1322                 }
1323             }
1324             account.save();
1325         }
1326     }
1327
1328     private Pair<Long, SendMessageResult> sendSelfMessage(
1329             SignalServiceDataMessage.Builder messageBuilder
1330     ) throws IOException {
1331         final var timestamp = System.currentTimeMillis();
1332         messageBuilder.withTimestamp(timestamp);
1333         getOrCreateMessagePipe();
1334         getOrCreateUnidentifiedMessagePipe();
1335         try {
1336             final var address = getSelfAddress();
1337
1338             final var contact = account.getContactStore().getContact(address);
1339             final var expirationTime = contact != null ? contact.messageExpirationTime : 0;
1340             messageBuilder.withExpiration(expirationTime);
1341
1342             var message = messageBuilder.build();
1343             final var result = sendSelfMessage(message);
1344             return new Pair<>(timestamp, result);
1345         } finally {
1346             account.save();
1347         }
1348     }
1349
1350     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1351         var messageSender = createMessageSender();
1352
1353         var recipient = account.getSelfAddress();
1354
1355         final var unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipient);
1356         var transcript = new SentTranscriptMessage(Optional.of(recipient),
1357                 message.getTimestamp(),
1358                 message,
1359                 message.getExpiresInSeconds(),
1360                 Map.of(recipient, unidentifiedAccess.isPresent()),
1361                 false);
1362         var syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1363
1364         try {
1365             var startTime = System.currentTimeMillis();
1366             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1367             return SendMessageResult.success(recipient,
1368                     unidentifiedAccess.isPresent(),
1369                     false,
1370                     System.currentTimeMillis() - startTime);
1371         } catch (UntrustedIdentityException e) {
1372             account.getSignalProtocolStore()
1373                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1374                             e.getIdentityKey(),
1375                             TrustLevel.UNTRUSTED);
1376             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1377         }
1378     }
1379
1380     private SendMessageResult sendMessage(
1381             SignalServiceAddress address, SignalServiceDataMessage message
1382     ) throws IOException {
1383         var messageSender = createMessageSender();
1384
1385         try {
1386             return messageSender.sendMessage(address, unidentifiedAccessHelper.getAccessFor(address), message);
1387         } catch (UntrustedIdentityException e) {
1388             account.getSignalProtocolStore()
1389                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1390                             e.getIdentityKey(),
1391                             TrustLevel.UNTRUSTED);
1392             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1393         }
1394     }
1395
1396     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1397         var cipher = new SignalServiceCipher(account.getSelfAddress(),
1398                 account.getSignalProtocolStore(),
1399                 certificateValidator);
1400         try {
1401             return cipher.decrypt(envelope);
1402         } catch (ProtocolUntrustedIdentityException e) {
1403             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1404                 var identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1405                 final var untrustedIdentity = identityException.getUntrustedIdentity();
1406                 if (untrustedIdentity != null) {
1407                     account.getSignalProtocolStore()
1408                             .saveIdentity(resolveSignalServiceAddress(identityException.getName()),
1409                                     untrustedIdentity,
1410                                     TrustLevel.UNTRUSTED);
1411                 }
1412                 throw identityException;
1413             }
1414             throw new AssertionError(e);
1415         }
1416     }
1417
1418     private void handleEndSession(SignalServiceAddress source) {
1419         account.getSignalProtocolStore().deleteAllSessions(source);
1420     }
1421
1422     private List<HandleAction> handleSignalServiceDataMessage(
1423             SignalServiceDataMessage message,
1424             boolean isSync,
1425             SignalServiceAddress source,
1426             SignalServiceAddress destination,
1427             boolean ignoreAttachments
1428     ) {
1429         var actions = new ArrayList<HandleAction>();
1430         if (message.getGroupContext().isPresent()) {
1431             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1432                 var groupInfo = message.getGroupContext().get().getGroupV1().get();
1433                 var groupId = GroupId.v1(groupInfo.getGroupId());
1434                 var group = getGroup(groupId);
1435                 if (group == null || group instanceof GroupInfoV1) {
1436                     var groupV1 = (GroupInfoV1) group;
1437                     switch (groupInfo.getType()) {
1438                         case UPDATE: {
1439                             if (groupV1 == null) {
1440                                 groupV1 = new GroupInfoV1(groupId);
1441                             }
1442
1443                             if (groupInfo.getAvatar().isPresent()) {
1444                                 var avatar = groupInfo.getAvatar().get();
1445                                 downloadGroupAvatar(avatar, groupV1.getGroupId());
1446                             }
1447
1448                             if (groupInfo.getName().isPresent()) {
1449                                 groupV1.name = groupInfo.getName().get();
1450                             }
1451
1452                             if (groupInfo.getMembers().isPresent()) {
1453                                 groupV1.addMembers(groupInfo.getMembers()
1454                                         .get()
1455                                         .stream()
1456                                         .map(this::resolveSignalServiceAddress)
1457                                         .collect(Collectors.toSet()));
1458                             }
1459
1460                             account.getGroupStore().updateGroup(groupV1);
1461                             break;
1462                         }
1463                         case DELIVER:
1464                             if (groupV1 == null && !isSync) {
1465                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1466                             }
1467                             break;
1468                         case QUIT: {
1469                             if (groupV1 != null) {
1470                                 groupV1.removeMember(source);
1471                                 account.getGroupStore().updateGroup(groupV1);
1472                             }
1473                             break;
1474                         }
1475                         case REQUEST_INFO:
1476                             if (groupV1 != null && !isSync) {
1477                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
1478                             }
1479                             break;
1480                     }
1481                 } else {
1482                     // Received a group v1 message for a v2 group
1483                 }
1484             }
1485             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1486                 final var groupContext = message.getGroupContext().get().getGroupV2().get();
1487                 final var groupMasterKey = groupContext.getMasterKey();
1488
1489                 getOrMigrateGroup(groupMasterKey,
1490                         groupContext.getRevision(),
1491                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1492             }
1493         }
1494
1495         final var conversationPartnerAddress = isSync ? destination : source;
1496         if (conversationPartnerAddress != null && message.isEndSession()) {
1497             handleEndSession(conversationPartnerAddress);
1498         }
1499         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1500             if (message.getGroupContext().isPresent()) {
1501                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1502                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1503                     var group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1504                     if (group != null) {
1505                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1506                             group.messageExpirationTime = message.getExpiresInSeconds();
1507                             account.getGroupStore().updateGroup(group);
1508                         }
1509                     }
1510                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1511                     // disappearing message timer already stored in the DecryptedGroup
1512                 }
1513             } else if (conversationPartnerAddress != null) {
1514                 var contact = account.getContactStore().getContact(conversationPartnerAddress);
1515                 if (contact == null) {
1516                     contact = new ContactInfo(conversationPartnerAddress);
1517                 }
1518                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1519                     contact.messageExpirationTime = message.getExpiresInSeconds();
1520                     account.getContactStore().updateContact(contact);
1521                 }
1522             }
1523         }
1524         if (!ignoreAttachments) {
1525             if (message.getAttachments().isPresent()) {
1526                 for (var attachment : message.getAttachments().get()) {
1527                     downloadAttachment(attachment);
1528                 }
1529             }
1530             if (message.getSharedContacts().isPresent()) {
1531                 for (var contact : message.getSharedContacts().get()) {
1532                     if (contact.getAvatar().isPresent()) {
1533                         downloadAttachment(contact.getAvatar().get().getAttachment());
1534                     }
1535                 }
1536             }
1537         }
1538         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1539             final ProfileKey profileKey;
1540             try {
1541                 profileKey = new ProfileKey(message.getProfileKey().get());
1542             } catch (InvalidInputException e) {
1543                 throw new AssertionError(e);
1544             }
1545             if (source.matches(account.getSelfAddress())) {
1546                 this.account.setProfileKey(profileKey);
1547             }
1548             this.account.getProfileStore().storeProfileKey(source, profileKey);
1549         }
1550         if (message.getPreviews().isPresent()) {
1551             final var previews = message.getPreviews().get();
1552             for (var preview : previews) {
1553                 if (preview.getImage().isPresent()) {
1554                     downloadAttachment(preview.getImage().get());
1555                 }
1556             }
1557         }
1558         if (message.getQuote().isPresent()) {
1559             final var quote = message.getQuote().get();
1560
1561             for (var quotedAttachment : quote.getAttachments()) {
1562                 final var thumbnail = quotedAttachment.getThumbnail();
1563                 if (thumbnail != null) {
1564                     downloadAttachment(thumbnail);
1565                 }
1566             }
1567         }
1568         if (message.getSticker().isPresent()) {
1569             final var messageSticker = message.getSticker().get();
1570             var sticker = account.getStickerStore().getSticker(messageSticker.getPackId());
1571             if (sticker == null) {
1572                 sticker = new Sticker(messageSticker.getPackId(), messageSticker.getPackKey());
1573                 account.getStickerStore().updateSticker(sticker);
1574             }
1575         }
1576         return actions;
1577     }
1578
1579     private GroupInfoV2 getOrMigrateGroup(
1580             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1581     ) {
1582         final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1583
1584         var groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1585         var groupInfo = getGroup(groupId);
1586         final GroupInfoV2 groupInfoV2;
1587         if (groupInfo instanceof GroupInfoV1) {
1588             // Received a v2 group message for a v1 group, we need to locally migrate the group
1589             account.getGroupStore().deleteGroup(groupInfo.getGroupId());
1590             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1591             logger.info("Locally migrated group {} to group v2, id: {}",
1592                     groupInfo.getGroupId().toBase64(),
1593                     groupInfoV2.getGroupId().toBase64());
1594         } else if (groupInfo instanceof GroupInfoV2) {
1595             groupInfoV2 = (GroupInfoV2) groupInfo;
1596         } else {
1597             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1598         }
1599
1600         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1601             DecryptedGroup group = null;
1602             if (signedGroupChange != null
1603                     && groupInfoV2.getGroup() != null
1604                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1605                 group = groupHelper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(), signedGroupChange, groupMasterKey);
1606             }
1607             if (group == null) {
1608                 group = groupHelper.getDecryptedGroup(groupSecretParams);
1609             }
1610             if (group != null) {
1611                 storeProfileKeysFromMembers(group);
1612                 final var avatar = group.getAvatar();
1613                 if (avatar != null && !avatar.isEmpty()) {
1614                     downloadGroupAvatar(groupId, groupSecretParams, avatar);
1615                 }
1616             }
1617             groupInfoV2.setGroup(group);
1618             account.getGroupStore().updateGroup(groupInfoV2);
1619         }
1620
1621         return groupInfoV2;
1622     }
1623
1624     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1625         for (var member : group.getMembersList()) {
1626             final var address = resolveSignalServiceAddress(new SignalServiceAddress(UuidUtil.parseOrThrow(member.getUuid()
1627                     .toByteArray()), null));
1628             try {
1629                 account.getProfileStore()
1630                         .storeProfileKey(address, new ProfileKey(member.getProfileKey().toByteArray()));
1631             } catch (InvalidInputException ignored) {
1632             }
1633         }
1634     }
1635
1636     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1637         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
1638             retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
1639         }
1640     }
1641
1642     private void retryFailedReceivedMessage(
1643             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
1644     ) {
1645         var envelope = cachedMessage.loadEnvelope();
1646         if (envelope == null) {
1647             return;
1648         }
1649         SignalServiceContent content = null;
1650         if (!envelope.isReceipt()) {
1651             try {
1652                 content = decryptMessage(envelope);
1653             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1654                 return;
1655             } catch (Exception er) {
1656                 // All other errors are not recoverable, so delete the cached message
1657                 cachedMessage.delete();
1658                 return;
1659             }
1660             var actions = handleMessage(envelope, content, ignoreAttachments);
1661             for (var action : actions) {
1662                 try {
1663                     action.execute(this);
1664                 } catch (Throwable e) {
1665                     logger.warn("Message action failed.", e);
1666                 }
1667             }
1668         }
1669         account.save();
1670         handler.handleMessage(envelope, content, null);
1671         cachedMessage.delete();
1672     }
1673
1674     public void receiveMessages(
1675             long timeout,
1676             TimeUnit unit,
1677             boolean returnOnTimeout,
1678             boolean ignoreAttachments,
1679             ReceiveMessageHandler handler
1680     ) throws IOException {
1681         retryFailedReceivedMessages(handler, ignoreAttachments);
1682
1683         Set<HandleAction> queuedActions = null;
1684
1685         final var messagePipe = getOrCreateMessagePipe();
1686
1687         var hasCaughtUpWithOldMessages = false;
1688
1689         while (true) {
1690             SignalServiceEnvelope envelope;
1691             SignalServiceContent content = null;
1692             Exception exception = null;
1693             final CachedMessage[] cachedMessage = {null};
1694             try {
1695                 var result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1696                     // store message on disk, before acknowledging receipt to the server
1697                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1);
1698                 });
1699                 if (result.isPresent()) {
1700                     envelope = result.get();
1701                 } else {
1702                     // Received indicator that server queue is empty
1703                     hasCaughtUpWithOldMessages = true;
1704
1705                     if (queuedActions != null) {
1706                         for (var action : queuedActions) {
1707                             try {
1708                                 action.execute(this);
1709                             } catch (Throwable e) {
1710                                 logger.warn("Message action failed.", e);
1711                             }
1712                         }
1713                         account.save();
1714                         queuedActions.clear();
1715                         queuedActions = null;
1716                     }
1717
1718                     // Continue to wait another timeout for new messages
1719                     continue;
1720                 }
1721             } catch (TimeoutException e) {
1722                 if (returnOnTimeout) return;
1723                 continue;
1724             }
1725
1726             if (envelope.hasSource()) {
1727                 // Store uuid if we don't have it already
1728                 var source = envelope.getSourceAddress();
1729                 resolveSignalServiceAddress(source);
1730             }
1731             if (!envelope.isReceipt()) {
1732                 try {
1733                     content = decryptMessage(envelope);
1734                 } catch (Exception e) {
1735                     exception = e;
1736                 }
1737                 var actions = handleMessage(envelope, content, ignoreAttachments);
1738                 if (hasCaughtUpWithOldMessages) {
1739                     for (var action : actions) {
1740                         try {
1741                             action.execute(this);
1742                         } catch (Throwable e) {
1743                             logger.warn("Message action failed.", e);
1744                         }
1745                     }
1746                 } else {
1747                     if (queuedActions == null) {
1748                         queuedActions = new HashSet<>();
1749                     }
1750                     queuedActions.addAll(actions);
1751                 }
1752             }
1753             account.save();
1754             if (isMessageBlocked(envelope, content)) {
1755                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
1756             } else if (isNotAGroupMember(envelope, content)) {
1757                 logger.info("Ignoring a message from a non group member: {}", envelope.getTimestamp());
1758             } else {
1759                 handler.handleMessage(envelope, content, exception);
1760             }
1761             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1762                 if (cachedMessage[0] != null) {
1763                     cachedMessage[0].delete();
1764                 }
1765             }
1766         }
1767     }
1768
1769     private boolean isMessageBlocked(
1770             SignalServiceEnvelope envelope, SignalServiceContent content
1771     ) {
1772         SignalServiceAddress source;
1773         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1774             source = envelope.getSourceAddress();
1775         } else if (content != null) {
1776             source = content.getSender();
1777         } else {
1778             return false;
1779         }
1780         var sourceContact = account.getContactStore().getContact(source);
1781         if (sourceContact != null && sourceContact.blocked) {
1782             return true;
1783         }
1784
1785         if (content != null && content.getDataMessage().isPresent()) {
1786             var message = content.getDataMessage().get();
1787             if (message.getGroupContext().isPresent()) {
1788                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1789                 var group = getGroup(groupId);
1790                 if (group != null && group.isBlocked()) {
1791                     return true;
1792                 }
1793             }
1794         }
1795         return false;
1796     }
1797
1798     private boolean isNotAGroupMember(
1799             SignalServiceEnvelope envelope, SignalServiceContent content
1800     ) {
1801         SignalServiceAddress source;
1802         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1803             source = envelope.getSourceAddress();
1804         } else if (content != null) {
1805             source = content.getSender();
1806         } else {
1807             return false;
1808         }
1809
1810         if (content != null && content.getDataMessage().isPresent()) {
1811             var message = content.getDataMessage().get();
1812             if (message.getGroupContext().isPresent()) {
1813                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1814                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1815                     if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
1816                         return false;
1817                     }
1818                 }
1819                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1820                 var group = getGroup(groupId);
1821                 if (group != null && !group.isMember(source)) {
1822                     return true;
1823                 }
1824             }
1825         }
1826         return false;
1827     }
1828
1829     private List<HandleAction> handleMessage(
1830             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
1831     ) {
1832         var actions = new ArrayList<HandleAction>();
1833         if (content != null) {
1834             final SignalServiceAddress sender;
1835             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1836                 sender = envelope.getSourceAddress();
1837             } else {
1838                 sender = content.getSender();
1839             }
1840             // Store uuid if we don't have it already
1841             resolveSignalServiceAddress(sender);
1842
1843             if (content.getDataMessage().isPresent()) {
1844                 var message = content.getDataMessage().get();
1845
1846                 if (content.isNeedsReceipt()) {
1847                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1848                 }
1849
1850                 actions.addAll(handleSignalServiceDataMessage(message,
1851                         false,
1852                         sender,
1853                         account.getSelfAddress(),
1854                         ignoreAttachments));
1855             }
1856             if (content.getSyncMessage().isPresent()) {
1857                 account.setMultiDevice(true);
1858                 var syncMessage = content.getSyncMessage().get();
1859                 if (syncMessage.getSent().isPresent()) {
1860                     var message = syncMessage.getSent().get();
1861                     final var destination = message.getDestination().orNull();
1862                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
1863                             true,
1864                             sender,
1865                             destination,
1866                             ignoreAttachments));
1867                 }
1868                 if (syncMessage.getRequest().isPresent()) {
1869                     var rm = syncMessage.getRequest().get();
1870                     if (rm.isContactsRequest()) {
1871                         actions.add(SendSyncContactsAction.create());
1872                     }
1873                     if (rm.isGroupsRequest()) {
1874                         actions.add(SendSyncGroupsAction.create());
1875                     }
1876                     if (rm.isBlockedListRequest()) {
1877                         actions.add(SendSyncBlockedListAction.create());
1878                     }
1879                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
1880                 }
1881                 if (syncMessage.getGroups().isPresent()) {
1882                     File tmpFile = null;
1883                     try {
1884                         tmpFile = IOUtils.createTempFile();
1885                         final var groupsMessage = syncMessage.getGroups().get();
1886                         try (var attachmentAsStream = retrieveAttachmentAsStream(groupsMessage.asPointer(), tmpFile)) {
1887                             var s = new DeviceGroupsInputStream(attachmentAsStream);
1888                             DeviceGroup g;
1889                             while ((g = s.read()) != null) {
1890                                 var syncGroup = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(g.getId()));
1891                                 if (syncGroup != null) {
1892                                     if (g.getName().isPresent()) {
1893                                         syncGroup.name = g.getName().get();
1894                                     }
1895                                     syncGroup.addMembers(g.getMembers()
1896                                             .stream()
1897                                             .map(this::resolveSignalServiceAddress)
1898                                             .collect(Collectors.toSet()));
1899                                     if (!g.isActive()) {
1900                                         syncGroup.removeMember(account.getSelfAddress());
1901                                     } else {
1902                                         // Add ourself to the member set as it's marked as active
1903                                         syncGroup.addMembers(List.of(account.getSelfAddress()));
1904                                     }
1905                                     syncGroup.blocked = g.isBlocked();
1906                                     if (g.getColor().isPresent()) {
1907                                         syncGroup.color = g.getColor().get();
1908                                     }
1909
1910                                     if (g.getAvatar().isPresent()) {
1911                                         downloadGroupAvatar(g.getAvatar().get(), syncGroup.getGroupId());
1912                                     }
1913                                     syncGroup.inboxPosition = g.getInboxPosition().orNull();
1914                                     syncGroup.archived = g.isArchived();
1915                                     account.getGroupStore().updateGroup(syncGroup);
1916                                 }
1917                             }
1918                         }
1919                     } catch (Exception e) {
1920                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
1921                                 tmpFile,
1922                                 e.getMessage());
1923                     } finally {
1924                         if (tmpFile != null) {
1925                             try {
1926                                 Files.delete(tmpFile.toPath());
1927                             } catch (IOException e) {
1928                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
1929                                         tmpFile,
1930                                         e.getMessage());
1931                             }
1932                         }
1933                     }
1934                 }
1935                 if (syncMessage.getBlockedList().isPresent()) {
1936                     final var blockedListMessage = syncMessage.getBlockedList().get();
1937                     for (var address : blockedListMessage.getAddresses()) {
1938                         setContactBlocked(resolveSignalServiceAddress(address), true);
1939                     }
1940                     for (var groupId : blockedListMessage.getGroupIds()
1941                             .stream()
1942                             .map(GroupId::unknownVersion)
1943                             .collect(Collectors.toSet())) {
1944                         try {
1945                             setGroupBlocked(groupId, true);
1946                         } catch (GroupNotFoundException e) {
1947                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
1948                                     groupId.toBase64());
1949                         }
1950                     }
1951                 }
1952                 if (syncMessage.getContacts().isPresent()) {
1953                     File tmpFile = null;
1954                     try {
1955                         tmpFile = IOUtils.createTempFile();
1956                         final var contactsMessage = syncMessage.getContacts().get();
1957                         try (var attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
1958                                 .asPointer(), tmpFile)) {
1959                             var s = new DeviceContactsInputStream(attachmentAsStream);
1960                             if (contactsMessage.isComplete()) {
1961                                 account.getContactStore().clear();
1962                             }
1963                             DeviceContact c;
1964                             while ((c = s.read()) != null) {
1965                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1966                                     account.setProfileKey(c.getProfileKey().get());
1967                                 }
1968                                 final var address = resolveSignalServiceAddress(c.getAddress());
1969                                 var contact = account.getContactStore().getContact(address);
1970                                 if (contact == null) {
1971                                     contact = new ContactInfo(address);
1972                                 }
1973                                 if (c.getName().isPresent()) {
1974                                     contact.name = c.getName().get();
1975                                 }
1976                                 if (c.getColor().isPresent()) {
1977                                     contact.color = c.getColor().get();
1978                                 }
1979                                 if (c.getProfileKey().isPresent()) {
1980                                     account.getProfileStore().storeProfileKey(address, c.getProfileKey().get());
1981                                 }
1982                                 if (c.getVerified().isPresent()) {
1983                                     final var verifiedMessage = c.getVerified().get();
1984                                     account.getSignalProtocolStore()
1985                                             .setIdentityTrustLevel(verifiedMessage.getDestination(),
1986                                                     verifiedMessage.getIdentityKey(),
1987                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1988                                 }
1989                                 if (c.getExpirationTimer().isPresent()) {
1990                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1991                                 }
1992                                 contact.blocked = c.isBlocked();
1993                                 contact.inboxPosition = c.getInboxPosition().orNull();
1994                                 contact.archived = c.isArchived();
1995                                 account.getContactStore().updateContact(contact);
1996
1997                                 if (c.getAvatar().isPresent()) {
1998                                     downloadContactAvatar(c.getAvatar().get(), contact.getAddress());
1999                                 }
2000                             }
2001                         }
2002                     } catch (Exception e) {
2003                         logger.warn("Failed to handle received sync contacts “{}”, ignoring: {}",
2004                                 tmpFile,
2005                                 e.getMessage());
2006                     } finally {
2007                         if (tmpFile != null) {
2008                             try {
2009                                 Files.delete(tmpFile.toPath());
2010                             } catch (IOException e) {
2011                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2012                                         tmpFile,
2013                                         e.getMessage());
2014                             }
2015                         }
2016                     }
2017                 }
2018                 if (syncMessage.getVerified().isPresent()) {
2019                     final var verifiedMessage = syncMessage.getVerified().get();
2020                     account.getSignalProtocolStore()
2021                             .setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()),
2022                                     verifiedMessage.getIdentityKey(),
2023                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2024                 }
2025                 if (syncMessage.getStickerPackOperations().isPresent()) {
2026                     final var stickerPackOperationMessages = syncMessage.getStickerPackOperations().get();
2027                     for (var m : stickerPackOperationMessages) {
2028                         if (!m.getPackId().isPresent()) {
2029                             continue;
2030                         }
2031                         var sticker = account.getStickerStore().getSticker(m.getPackId().get());
2032                         if (sticker == null) {
2033                             if (!m.getPackKey().isPresent()) {
2034                                 continue;
2035                             }
2036                             sticker = new Sticker(m.getPackId().get(), m.getPackKey().get());
2037                         }
2038                         sticker.setInstalled(!m.getType().isPresent()
2039                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2040                         account.getStickerStore().updateSticker(sticker);
2041                     }
2042                 }
2043                 if (syncMessage.getFetchType().isPresent()) {
2044                     switch (syncMessage.getFetchType().get()) {
2045                         case LOCAL_PROFILE:
2046                             getRecipientProfile(getSelfAddress(), true);
2047                         case STORAGE_MANIFEST:
2048                             // TODO
2049                     }
2050                 }
2051                 if (syncMessage.getKeys().isPresent()) {
2052                     final var keysMessage = syncMessage.getKeys().get();
2053                     if (keysMessage.getStorageService().isPresent()) {
2054                         final var storageKey = keysMessage.getStorageService().get();
2055                         account.setStorageKey(storageKey);
2056                     }
2057                 }
2058                 if (syncMessage.getConfiguration().isPresent()) {
2059                     // TODO
2060                 }
2061             }
2062         }
2063         return actions;
2064     }
2065
2066     private void downloadContactAvatar(SignalServiceAttachment avatar, SignalServiceAddress address) {
2067         try {
2068             avatarStore.storeContactAvatar(address, outputStream -> retrieveAttachment(avatar, outputStream));
2069         } catch (IOException e) {
2070             logger.warn("Failed to download avatar for contact {}, ignoring: {}", address, e.getMessage());
2071         }
2072     }
2073
2074     private void downloadGroupAvatar(SignalServiceAttachment avatar, GroupId groupId) {
2075         try {
2076             avatarStore.storeGroupAvatar(groupId, outputStream -> retrieveAttachment(avatar, outputStream));
2077         } catch (IOException e) {
2078             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2079         }
2080     }
2081
2082     private void downloadGroupAvatar(GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey) {
2083         try {
2084             avatarStore.storeGroupAvatar(groupId,
2085                     outputStream -> retrieveGroupV2Avatar(groupSecretParams, cdnKey, outputStream));
2086         } catch (IOException e) {
2087             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2088         }
2089     }
2090
2091     private void downloadProfileAvatar(
2092             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2093     ) {
2094         try {
2095             avatarStore.storeProfileAvatar(address,
2096                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
2097         } catch (Throwable e) {
2098             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
2099         }
2100     }
2101
2102     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2103         return attachmentStore.getAttachmentFile(attachmentId);
2104     }
2105
2106     private void downloadAttachment(final SignalServiceAttachment attachment) {
2107         if (!attachment.isPointer()) {
2108             logger.warn("Invalid state, can't store an attachment stream.");
2109         }
2110
2111         var pointer = attachment.asPointer();
2112         if (pointer.getPreview().isPresent()) {
2113             final var preview = pointer.getPreview().get();
2114             try {
2115                 attachmentStore.storeAttachmentPreview(pointer.getRemoteId(),
2116                         outputStream -> outputStream.write(preview, 0, preview.length));
2117             } catch (IOException e) {
2118                 logger.warn("Failed to download attachment preview, ignoring: {}", e.getMessage());
2119             }
2120         }
2121
2122         try {
2123             attachmentStore.storeAttachment(pointer.getRemoteId(),
2124                     outputStream -> retrieveAttachmentPointer(pointer, outputStream));
2125         } catch (IOException e) {
2126             logger.warn("Failed to download attachment ({}), ignoring: {}", pointer.getRemoteId(), e.getMessage());
2127         }
2128     }
2129
2130     private void retrieveGroupV2Avatar(
2131             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
2132     ) throws IOException {
2133         var groupOperations = groupsV2Operations.forGroup(groupSecretParams);
2134
2135         var tmpFile = IOUtils.createTempFile();
2136         try (InputStream input = messageReceiver.retrieveGroupsV2ProfileAvatar(cdnKey,
2137                 tmpFile,
2138                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2139             var encryptedData = IOUtils.readFully(input);
2140
2141             var decryptedData = groupOperations.decryptAvatar(encryptedData);
2142             outputStream.write(decryptedData);
2143         } finally {
2144             try {
2145                 Files.delete(tmpFile.toPath());
2146             } catch (IOException e) {
2147                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2148                         tmpFile,
2149                         e.getMessage());
2150             }
2151         }
2152     }
2153
2154     private void retrieveProfileAvatar(
2155             String avatarPath, ProfileKey profileKey, OutputStream outputStream
2156     ) throws IOException {
2157         var tmpFile = IOUtils.createTempFile();
2158         try (var input = messageReceiver.retrieveProfileAvatar(avatarPath,
2159                 tmpFile,
2160                 profileKey,
2161                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2162             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2163             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2164         } finally {
2165             try {
2166                 Files.delete(tmpFile.toPath());
2167             } catch (IOException e) {
2168                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2169                         tmpFile,
2170                         e.getMessage());
2171             }
2172         }
2173     }
2174
2175     private void retrieveAttachment(
2176             final SignalServiceAttachment attachment, final OutputStream outputStream
2177     ) throws IOException {
2178         if (attachment.isPointer()) {
2179             var pointer = attachment.asPointer();
2180             retrieveAttachmentPointer(pointer, outputStream);
2181         } else {
2182             var stream = attachment.asStream();
2183             IOUtils.copyStream(stream.getInputStream(), outputStream);
2184         }
2185     }
2186
2187     private void retrieveAttachmentPointer(
2188             SignalServiceAttachmentPointer pointer, OutputStream outputStream
2189     ) throws IOException {
2190         var tmpFile = IOUtils.createTempFile();
2191         try (var input = retrieveAttachmentAsStream(pointer, tmpFile)) {
2192             IOUtils.copyStream(input, outputStream);
2193         } catch (MissingConfigurationException | InvalidMessageException e) {
2194             throw new IOException(e);
2195         } finally {
2196             try {
2197                 Files.delete(tmpFile.toPath());
2198             } catch (IOException e) {
2199                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2200                         tmpFile,
2201                         e.getMessage());
2202             }
2203         }
2204     }
2205
2206     private InputStream retrieveAttachmentAsStream(
2207             SignalServiceAttachmentPointer pointer, File tmpFile
2208     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2209         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2210     }
2211
2212     void sendGroups() throws IOException, UntrustedIdentityException {
2213         var groupsFile = IOUtils.createTempFile();
2214
2215         try {
2216             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2217                 var out = new DeviceGroupsOutputStream(fos);
2218                 for (var record : getGroups()) {
2219                     if (record instanceof GroupInfoV1) {
2220                         var groupInfo = (GroupInfoV1) record;
2221                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2222                                 Optional.fromNullable(groupInfo.name),
2223                                 new ArrayList<>(groupInfo.getMembers()),
2224                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2225                                 groupInfo.isMember(account.getSelfAddress()),
2226                                 Optional.of(groupInfo.messageExpirationTime),
2227                                 Optional.fromNullable(groupInfo.color),
2228                                 groupInfo.blocked,
2229                                 Optional.fromNullable(groupInfo.inboxPosition),
2230                                 groupInfo.archived));
2231                     }
2232                 }
2233             }
2234
2235             if (groupsFile.exists() && groupsFile.length() > 0) {
2236                 try (var groupsFileStream = new FileInputStream(groupsFile)) {
2237                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2238                             .withStream(groupsFileStream)
2239                             .withContentType("application/octet-stream")
2240                             .withLength(groupsFile.length())
2241                             .build();
2242
2243                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2244                 }
2245             }
2246         } finally {
2247             try {
2248                 Files.delete(groupsFile.toPath());
2249             } catch (IOException e) {
2250                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2251             }
2252         }
2253     }
2254
2255     public void sendContacts() throws IOException, UntrustedIdentityException {
2256         var contactsFile = IOUtils.createTempFile();
2257
2258         try {
2259             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2260                 var out = new DeviceContactsOutputStream(fos);
2261                 for (var record : account.getContactStore().getContacts()) {
2262                     VerifiedMessage verifiedMessage = null;
2263                     var currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
2264                     if (currentIdentity != null) {
2265                         verifiedMessage = new VerifiedMessage(record.getAddress(),
2266                                 currentIdentity.getIdentityKey(),
2267                                 currentIdentity.getTrustLevel().toVerifiedState(),
2268                                 currentIdentity.getDateAdded().getTime());
2269                     }
2270
2271                     var profileKey = account.getProfileStore().getProfileKey(record.getAddress());
2272                     out.write(new DeviceContact(record.getAddress(),
2273                             Optional.fromNullable(record.name),
2274                             createContactAvatarAttachment(record.getAddress()),
2275                             Optional.fromNullable(record.color),
2276                             Optional.fromNullable(verifiedMessage),
2277                             Optional.fromNullable(profileKey),
2278                             record.blocked,
2279                             Optional.of(record.messageExpirationTime),
2280                             Optional.fromNullable(record.inboxPosition),
2281                             record.archived));
2282                 }
2283
2284                 if (account.getProfileKey() != null) {
2285                     // Send our own profile key as well
2286                     out.write(new DeviceContact(account.getSelfAddress(),
2287                             Optional.absent(),
2288                             Optional.absent(),
2289                             Optional.absent(),
2290                             Optional.absent(),
2291                             Optional.of(account.getProfileKey()),
2292                             false,
2293                             Optional.absent(),
2294                             Optional.absent(),
2295                             false));
2296                 }
2297             }
2298
2299             if (contactsFile.exists() && contactsFile.length() > 0) {
2300                 try (var contactsFileStream = new FileInputStream(contactsFile)) {
2301                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2302                             .withStream(contactsFileStream)
2303                             .withContentType("application/octet-stream")
2304                             .withLength(contactsFile.length())
2305                             .build();
2306
2307                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2308                 }
2309             }
2310         } finally {
2311             try {
2312                 Files.delete(contactsFile.toPath());
2313             } catch (IOException e) {
2314                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2315             }
2316         }
2317     }
2318
2319     void sendBlockedList() throws IOException, UntrustedIdentityException {
2320         var addresses = new ArrayList<SignalServiceAddress>();
2321         for (var record : account.getContactStore().getContacts()) {
2322             if (record.blocked) {
2323                 addresses.add(record.getAddress());
2324             }
2325         }
2326         var groupIds = new ArrayList<byte[]>();
2327         for (var record : getGroups()) {
2328             if (record.isBlocked()) {
2329                 groupIds.add(record.getGroupId().serialize());
2330             }
2331         }
2332         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2333     }
2334
2335     private void sendVerifiedMessage(
2336             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2337     ) throws IOException, UntrustedIdentityException {
2338         var verifiedMessage = new VerifiedMessage(destination,
2339                 identityKey,
2340                 trustLevel.toVerifiedState(),
2341                 System.currentTimeMillis());
2342         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2343     }
2344
2345     public List<ContactInfo> getContacts() {
2346         return account.getContactStore().getContacts();
2347     }
2348
2349     public String getContactOrProfileName(String number) {
2350         final var address = Utils.getSignalServiceAddressFromIdentifier(number);
2351
2352         final var contact = account.getContactStore().getContact(address);
2353         if (contact != null && !Util.isEmpty(contact.name)) {
2354             return contact.name;
2355         }
2356
2357         final var profileEntry = account.getProfileStore().getProfileEntry(address);
2358         if (profileEntry != null && profileEntry.getProfile() != null) {
2359             return profileEntry.getProfile().getName();
2360         }
2361
2362         return null;
2363     }
2364
2365     public GroupInfo getGroup(GroupId groupId) {
2366         final var group = account.getGroupStore().getGroup(groupId);
2367         if (group instanceof GroupInfoV2 && ((GroupInfoV2) group).getGroup() == null) {
2368             final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(((GroupInfoV2) group).getMasterKey());
2369             ((GroupInfoV2) group).setGroup(groupHelper.getDecryptedGroup(groupSecretParams));
2370             account.getGroupStore().updateGroup(group);
2371         }
2372         return group;
2373     }
2374
2375     public List<IdentityInfo> getIdentities() {
2376         return account.getSignalProtocolStore().getIdentities();
2377     }
2378
2379     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2380         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
2381     }
2382
2383     /**
2384      * Trust this the identity with this fingerprint
2385      *
2386      * @param name        username of the identity
2387      * @param fingerprint Fingerprint
2388      */
2389     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2390         var address = canonicalizeAndResolveSignalServiceAddress(name);
2391         var ids = account.getSignalProtocolStore().getIdentities(address);
2392         if (ids == null) {
2393             return false;
2394         }
2395         for (var id : ids) {
2396             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
2397                 continue;
2398             }
2399
2400             account.getSignalProtocolStore()
2401                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2402             try {
2403                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2404             } catch (IOException | UntrustedIdentityException e) {
2405                 logger.warn("Failed to send verification sync message: {}", e.getMessage());
2406             }
2407             account.save();
2408             return true;
2409         }
2410         return false;
2411     }
2412
2413     /**
2414      * Trust this the identity with this safety number
2415      *
2416      * @param name         username of the identity
2417      * @param safetyNumber Safety number
2418      */
2419     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2420         var address = canonicalizeAndResolveSignalServiceAddress(name);
2421         var ids = account.getSignalProtocolStore().getIdentities(address);
2422         if (ids == null) {
2423             return false;
2424         }
2425         for (var id : ids) {
2426             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2427                 continue;
2428             }
2429
2430             account.getSignalProtocolStore()
2431                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2432             try {
2433                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2434             } catch (IOException | UntrustedIdentityException e) {
2435                 logger.warn("Failed to send verification sync message: {}", e.getMessage());
2436             }
2437             account.save();
2438             return true;
2439         }
2440         return false;
2441     }
2442
2443     /**
2444      * Trust all keys of this identity without verification
2445      *
2446      * @param name username of the identity
2447      */
2448     public boolean trustIdentityAllKeys(String name) {
2449         var address = resolveSignalServiceAddress(name);
2450         var ids = account.getSignalProtocolStore().getIdentities(address);
2451         if (ids == null) {
2452             return false;
2453         }
2454         for (var id : ids) {
2455             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2456                 account.getSignalProtocolStore()
2457                         .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2458                 try {
2459                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2460                 } catch (IOException | UntrustedIdentityException e) {
2461                     logger.warn("Failed to send verification sync message: {}", e.getMessage());
2462                 }
2463             }
2464         }
2465         account.save();
2466         return true;
2467     }
2468
2469     public String computeSafetyNumber(
2470             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2471     ) {
2472         return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
2473                 account.getSelfAddress(),
2474                 getIdentityKeyPair().getPublicKey(),
2475                 theirAddress,
2476                 theirIdentityKey);
2477     }
2478
2479     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2480         var canonicalizedNumber = UuidUtil.isUuid(identifier)
2481                 ? identifier
2482                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2483         return resolveSignalServiceAddress(canonicalizedNumber);
2484     }
2485
2486     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2487         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2488
2489         return resolveSignalServiceAddress(address);
2490     }
2491
2492     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2493         if (address.matches(account.getSelfAddress())) {
2494             return account.getSelfAddress();
2495         }
2496
2497         return account.getRecipientStore().resolveServiceAddress(address);
2498     }
2499
2500     @Override
2501     public void close() throws IOException {
2502         close(true);
2503     }
2504
2505     void close(boolean closeAccount) throws IOException {
2506         executor.shutdown();
2507
2508         if (messagePipe != null) {
2509             messagePipe.shutdown();
2510             messagePipe = null;
2511         }
2512
2513         if (unidentifiedMessagePipe != null) {
2514             unidentifiedMessagePipe.shutdown();
2515             unidentifiedMessagePipe = null;
2516         }
2517
2518         if (closeAccount && account != null) {
2519             account.close();
2520         }
2521         account = null;
2522     }
2523
2524     public interface ReceiveMessageHandler {
2525
2526         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2527     }
2528 }