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.groups.GroupInfo;
  34 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  35 import org.asamk.signal.manager.storage.groups.GroupInfoV2;
  36 import org.asamk.signal.manager.storage.identities.IdentityInfo;
  37 import org.asamk.signal.manager.storage.messageCache.CachedMessage;
  38 import org.asamk.signal.manager.storage.recipients.Contact;
  39 import org.asamk.signal.manager.storage.recipients.Profile;
  40 import org.asamk.signal.manager.storage.recipients.RecipientId;
  41 import org.asamk.signal.manager.storage.stickers.Sticker;
  42 import org.asamk.signal.manager.storage.stickers.StickerPackId;
  43 import org.asamk.signal.manager.util.AttachmentUtils;
  44 import org.asamk.signal.manager.util.IOUtils;
  45 import org.asamk.signal.manager.util.KeyUtils;
  46 import org.asamk.signal.manager.util.ProfileUtils;
  47 import org.asamk.signal.manager.util.StickerUtils;
  48 import org.asamk.signal.manager.util.Utils;
  49 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  50 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  51 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  52 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  53 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  54 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  55 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  56 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  57 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  58 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  59 import org.signal.libsignal.metadata.SelfSendException;
  60 import org.signal.libsignal.metadata.certificate.CertificateValidator;
  61 import org.signal.storageservice.protos.groups.GroupChange;
  62 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
  63 import org.signal.zkgroup.InvalidInputException;
  64 import org.signal.zkgroup.VerificationFailedException;
  65 import org.signal.zkgroup.groups.GroupMasterKey;
  66 import org.signal.zkgroup.groups.GroupSecretParams;
  67 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  68 import org.signal.zkgroup.profiles.ProfileKey;
  69 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  70 import org.slf4j.Logger;
  71 import org.slf4j.LoggerFactory;
  72 import org.whispersystems.libsignal.IdentityKey;
  73 import org.whispersystems.libsignal.IdentityKeyPair;
  74 import org.whispersystems.libsignal.InvalidKeyException;
  75 import org.whispersystems.libsignal.InvalidMessageException;
  76 import org.whispersystems.libsignal.ecc.ECPublicKey;
  77 import org.whispersystems.libsignal.state.PreKeyRecord;
  78 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  79 import org.whispersystems.libsignal.util.Pair;
  80 import org.whispersystems.libsignal.util.guava.Optional;
  81 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  82 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  83 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  84 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  85 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  86 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  87 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  88 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  89 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
  90 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  91 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  92 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  93 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  94 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  95 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  96 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  97 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  98 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  99 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
 100 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
 101 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
 102 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
 103 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
 104 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 105 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 106 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 107 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 108 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 109 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 110 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 111 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 112 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 113 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 114 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 115 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 116 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 117 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 118 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 119 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 120 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 121 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 122 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 123 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
 124 import org.whispersystems.signalservice.api.util.SleepTimer;
 125 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 126 import org.whispersystems.signalservice.api.util.UuidUtil;
 127 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 128 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 129 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 130 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 131 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 132 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 133 import org.whispersystems.signalservice.internal.util.Hex;
 134 import org.whispersystems.signalservice.internal.util.Util;
 135
 136 import java.io.Closeable;
 137 import java.io.File;
 138 import java.io.FileInputStream;
 139 import java.io.FileOutputStream;
 140 import java.io.IOException;
 141 import java.io.InputStream;
 142 import java.io.OutputStream;
 143 import java.net.URI;
 144 import java.net.URISyntaxException;
 145 import java.net.URLEncoder;
 146 import java.nio.charset.StandardCharsets;
 147 import java.nio.file.Files;
 148 import java.security.SignatureException;
 149 import java.util.ArrayList;
 150 import java.util.Arrays;
 151 import java.util.Base64;
 152 import java.util.Collection;
 153 import java.util.Date;
 154 import java.util.HashSet;
 155 import java.util.List;
 156 import java.util.Map;
 157 import java.util.Set;
 158 import java.util.UUID;
 159 import java.util.concurrent.ExecutorService;
 160 import java.util.concurrent.Executors;
 161 import java.util.concurrent.TimeUnit;
 162 import java.util.concurrent.TimeoutException;
 163 import java.util.function.Function;
 164 import java.util.stream.Collectors;
 165
 166 import static org.asamk.signal.manager.config.ServiceConfig.capabilities;
 167
 168 public class Manager implements Closeable {
 169
 170     private final static Logger logger = LoggerFactory.getLogger(Manager.class);
 171
 172     private final CertificateValidator certificateValidator;
 173
 174     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
 175     private final String userAgent;
 176
 177     private SignalAccount account;
 178     private final SignalServiceAccountManager accountManager;
 179     private final GroupsV2Api groupsV2Api;
 180     private final GroupsV2Operations groupsV2Operations;
 181     private final SignalServiceMessageReceiver messageReceiver;
 182     private final ClientZkProfileOperations clientZkProfileOperations;
 183
 184     private final ExecutorService executor = Executors.newCachedThreadPool();
 185
 186     private SignalServiceMessagePipe messagePipe = null;
 187     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 188
 189     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 190     private final ProfileHelper profileHelper;
 191     private final GroupHelper groupHelper;
 192     private final PinHelper pinHelper;
 193     private final AvatarStore avatarStore;
 194     private final AttachmentStore attachmentStore;
 195
 196     Manager(
 197             SignalAccount account,
 198             PathConfig pathConfig,
 199             ServiceEnvironmentConfig serviceEnvironmentConfig,
 200             String userAgent
 201     ) {
 202         this.account = account;
 203         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 204         this.certificateValidator = new CertificateValidator(serviceEnvironmentConfig.getUnidentifiedSenderTrustRoot());
 205         this.userAgent = userAgent;
 206         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 207                 serviceEnvironmentConfig.getSignalServiceConfiguration())) : null;
 208         final SleepTimer timer = new UptimeSleepTimer();
 209         this.accountManager = new SignalServiceAccountManager(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 210                 new DynamicCredentialsProvider(account.getUuid(),
 211                         account.getUsername(),
 212                         account.getPassword(),
 213                         account.getDeviceId()),
 214                 userAgent,
 215                 groupsV2Operations,
 216                 ServiceConfig.AUTOMATIC_NETWORK_RETRY,
 217                 timer);
 218         this.groupsV2Api = accountManager.getGroupsV2Api();
 219         final var keyBackupService = accountManager.getKeyBackupService(ServiceConfig.getIasKeyStore(),
 220                 serviceEnvironmentConfig.getKeyBackupConfig().getEnclaveName(),
 221                 serviceEnvironmentConfig.getKeyBackupConfig().getServiceId(),
 222                 serviceEnvironmentConfig.getKeyBackupConfig().getMrenclave(),
 223                 10);
 224
 225         this.pinHelper = new PinHelper(keyBackupService);
 226         this.clientZkProfileOperations = capabilities.isGv2()
 227                 ? ClientZkOperations.create(serviceEnvironmentConfig.getSignalServiceConfiguration())
 228                 .getProfileOperations()
 229                 : null;
 230         this.messageReceiver = new SignalServiceMessageReceiver(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 231                 account.getUuid(),
 232                 account.getUsername(),
 233                 account.getPassword(),
 234                 account.getDeviceId(),
 235                 userAgent,
 236                 null,
 237                 timer,
 238                 clientZkProfileOperations,
 239                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 240
 241         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 242                 account.getProfileStore()::getProfileKey,
 243                 this::getRecipientProfile,
 244                 this::getSenderCertificate);
 245         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 246                 unidentifiedAccessHelper::getAccessFor,
 247                 unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
 248                 () -> messageReceiver,
 249                 this::resolveSignalServiceAddress);
 250         this.groupHelper = new GroupHelper(this::getRecipientProfileKeyCredential,
 251                 this::getRecipientProfile,
 252                 account::getSelfRecipientId,
 253                 groupsV2Operations,
 254                 groupsV2Api,
 255                 this::getGroupAuthForToday,
 256                 this::resolveSignalServiceAddress);
 257         this.avatarStore = new AvatarStore(pathConfig.getAvatarsPath());
 258         this.attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
 259     }
 260
 261     public String getUsername() {
 262         return account.getUsername();
 263     }
 264
 265     public SignalServiceAddress getSelfAddress() {
 266         return account.getSelfAddress();
 267     }
 268
 269     public RecipientId getSelfRecipientId() {
 270         return account.getSelfRecipientId();
 271     }
 272
 273     private IdentityKeyPair getIdentityKeyPair() {
 274         return account.getIdentityKeyPair();
 275     }
 276
 277     public int getDeviceId() {
 278         return account.getDeviceId();
 279     }
 280
 281     public static Manager init(
 282             String username, File settingsPath, ServiceEnvironment serviceEnvironment, String userAgent
 283     ) throws IOException, NotRegisteredException {
 284         var pathConfig = PathConfig.createDefault(settingsPath);
 285
 286         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 287             throw new NotRegisteredException();
 288         }
 289
 290         var account = SignalAccount.load(pathConfig.getDataPath(), username);
 291
 292         if (!account.isRegistered()) {
 293             throw new NotRegisteredException();
 294         }
 295
 296         final var serviceEnvironmentConfig = ServiceConfig.getServiceEnvironmentConfig(serviceEnvironment, userAgent);
 297
 298         return new Manager(account, pathConfig, serviceEnvironmentConfig, userAgent);
 299     }
 300
 301     public static List<String> getAllLocalUsernames(File settingsPath) {
 302         var pathConfig = PathConfig.createDefault(settingsPath);
 303         final var dataPath = pathConfig.getDataPath();
 304         final var files = dataPath.listFiles();
 305
 306         if (files == null) {
 307             return List.of();
 308         }
 309
 310         return Arrays.stream(files)
 311                 .filter(File::isFile)
 312                 .map(File::getName)
 313                 .filter(file -> PhoneNumberFormatter.isValidNumber(file, null))
 314                 .collect(Collectors.toList());
 315     }
 316
 317     public void checkAccountState() throws IOException {
 318         if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 319             refreshPreKeys();
 320         }
 321         if (account.getUuid() == null) {
 322             account.setUuid(accountManager.getOwnUuid());
 323         }
 324         updateAccountAttributes();
 325     }
 326
 327     /**
 328      * This is used for checking a set of phone numbers for registration on Signal
 329      *
 330      * @param numbers The set of phone number in question
 331      * @return A map of numbers to booleans. True if registered, false otherwise. Should never be null
 332      * @throws IOException if its unable to get the contacts to check if they're registered
 333      */
 334     public Map<String, Boolean> areUsersRegistered(Set<String> numbers) throws IOException {
 335         // Note "contactDetails" has no optionals. It only gives us info on users who are registered
 336         var contactDetails = getRegisteredUsers(numbers);
 337
 338         var registeredUsers = contactDetails.keySet();
 339
 340         return numbers.stream().collect(Collectors.toMap(x -> x, registeredUsers::contains));
 341     }
 342
 343     public void updateAccountAttributes() throws IOException {
 344         accountManager.setAccountAttributes(null,
 345                 account.getLocalRegistrationId(),
 346                 true,
 347                 // set legacy pin only if no KBS master key is set
 348                 account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
 349                 account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 350                 account.getSelfUnidentifiedAccessKey(),
 351                 account.isUnrestrictedUnidentifiedAccess(),
 352                 capabilities,
 353                 account.isDiscoverableByPhoneNumber());
 354     }
 355
 356     /**
 357      * @param givenName  if null, the previous givenName will be kept
 358      * @param familyName if null, the previous familyName will be kept
 359      * @param about      if null, the previous about text will be kept
 360      * @param aboutEmoji if null, the previous about emoji will be kept
 361      * @param avatar     if avatar is null the image from the local avatar store is used (if present),
 362      */
 363     public void setProfile(
 364             String givenName, final String familyName, String about, String aboutEmoji, Optional<File> avatar
 365     ) throws IOException {
 366         var profile = getRecipientProfile(account.getSelfRecipientId());
 367         var builder = profile == null ? Profile.newBuilder() : Profile.newBuilder(profile);
 368         if (givenName != null) {
 369             builder.withGivenName(givenName);
 370         }
 371         if (familyName != null) {
 372             builder.withFamilyName(familyName);
 373         }
 374         if (about != null) {
 375             builder.withAbout(about);
 376         }
 377         if (aboutEmoji != null) {
 378             builder.withAboutEmoji(aboutEmoji);
 379         }
 380         var newProfile = builder.build();
 381
 382         try (final var streamDetails = avatar == null
 383                 ? avatarStore.retrieveProfileAvatar(getSelfAddress())
 384                 : avatar.isPresent() ? Utils.createStreamDetailsFromFile(avatar.get()) : null) {
 385             accountManager.setVersionedProfile(account.getUuid(),
 386                     account.getProfileKey(),
 387                     newProfile.getInternalServiceName(),
 388                     newProfile.getAbout() == null ? "" : newProfile.getAbout(),
 389                     newProfile.getAboutEmoji() == null ? "" : newProfile.getAboutEmoji(),
 390                     streamDetails);
 391         }
 392
 393         if (avatar != null) {
 394             if (avatar.isPresent()) {
 395                 avatarStore.storeProfileAvatar(getSelfAddress(),
 396                         outputStream -> IOUtils.copyFileToStream(avatar.get(), outputStream));
 397             } else {
 398                 avatarStore.deleteProfileAvatar(getSelfAddress());
 399             }
 400         }
 401         account.getProfileStore().storeProfile(account.getSelfRecipientId(), newProfile);
 402
 403         try {
 404             sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
 405         } catch (UntrustedIdentityException ignored) {
 406         }
 407     }
 408
 409     public void unregister() throws IOException {
 410         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 411         // If this is the master device, other users can't send messages to this number anymore.
 412         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 413         accountManager.setGcmId(Optional.absent());
 414
 415         account.setRegistered(false);
 416     }
 417
 418     public void deleteAccount() throws IOException {
 419         accountManager.deleteAccount();
 420
 421         account.setRegistered(false);
 422     }
 423
 424     public List<DeviceInfo> getLinkedDevices() throws IOException {
 425         var devices = accountManager.getDevices();
 426         account.setMultiDevice(devices.size() > 1);
 427         return devices;
 428     }
 429
 430     public void removeLinkedDevices(int deviceId) throws IOException {
 431         accountManager.removeDevice(deviceId);
 432         var devices = accountManager.getDevices();
 433         account.setMultiDevice(devices.size() > 1);
 434     }
 435
 436     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 437         var info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 438
 439         addDevice(info.deviceIdentifier, info.deviceKey);
 440     }
 441
 442     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 443         var identityKeyPair = getIdentityKeyPair();
 444         var verificationCode = accountManager.getNewDeviceVerificationCode();
 445
 446         accountManager.addDevice(deviceIdentifier,
 447                 deviceKey,
 448                 identityKeyPair,
 449                 Optional.of(account.getProfileKey().serialize()),
 450                 verificationCode);
 451         account.setMultiDevice(true);
 452     }
 453
 454     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 455         if (!account.isMasterDevice()) {
 456             throw new RuntimeException("Only master device can set a PIN");
 457         }
 458         if (pin.isPresent()) {
 459             final var masterKey = account.getPinMasterKey() != null
 460                     ? account.getPinMasterKey()
 461                     : KeyUtils.createMasterKey();
 462
 463             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 464
 465             account.setRegistrationLockPin(pin.get(), masterKey);
 466         } else {
 467             // Remove legacy registration lock
 468             accountManager.removeRegistrationLockV1();
 469
 470             // Remove KBS Pin
 471             pinHelper.removeRegistrationLockPin();
 472
 473             account.setRegistrationLockPin(null, null);
 474         }
 475     }
 476
 477     void refreshPreKeys() throws IOException {
 478         var oneTimePreKeys = generatePreKeys();
 479         final var identityKeyPair = getIdentityKeyPair();
 480         var signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 481
 482         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 483     }
 484
 485     private List<PreKeyRecord> generatePreKeys() {
 486         final var offset = account.getPreKeyIdOffset();
 487
 488         var records = KeyUtils.generatePreKeyRecords(offset, ServiceConfig.PREKEY_BATCH_SIZE);
 489         account.addPreKeys(records);
 490
 491         return records;
 492     }
 493
 494     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 495         final var signedPreKeyId = account.getNextSignedPreKeyId();
 496
 497         var record = KeyUtils.generateSignedPreKeyRecord(identityKeyPair, signedPreKeyId);
 498         account.addSignedPreKey(record);
 499
 500         return record;
 501     }
 502
 503     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 504         if (messagePipe == null) {
 505             messagePipe = messageReceiver.createMessagePipe();
 506         }
 507         return messagePipe;
 508     }
 509
 510     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 511         if (unidentifiedMessagePipe == null) {
 512             unidentifiedMessagePipe = messageReceiver.createUnidentifiedMessagePipe();
 513         }
 514         return unidentifiedMessagePipe;
 515     }
 516
 517     private SignalServiceMessageSender createMessageSender() {
 518         return new SignalServiceMessageSender(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 519                 account.getUuid(),
 520                 account.getUsername(),
 521                 account.getPassword(),
 522                 account.getDeviceId(),
 523                 account.getSignalProtocolStore(),
 524                 userAgent,
 525                 account.isMultiDevice(),
 526                 Optional.fromNullable(messagePipe),
 527                 Optional.fromNullable(unidentifiedMessagePipe),
 528                 Optional.absent(),
 529                 clientZkProfileOperations,
 530                 executor,
 531                 ServiceConfig.MAX_ENVELOPE_SIZE,
 532                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 533     }
 534
 535     public Profile getRecipientProfile(
 536             RecipientId recipientId
 537     ) {
 538         return getRecipientProfile(recipientId, false);
 539     }
 540
 541     private final Set<RecipientId> pendingProfileRequest = new HashSet<>();
 542
 543     Profile getRecipientProfile(
 544             RecipientId recipientId, boolean force
 545     ) {
 546         var profileKey = account.getProfileStore().getProfileKey(recipientId);
 547         if (profileKey == null) {
 548             if (force) {
 549                 // retrieve profile to get identity key
 550                 retrieveEncryptedProfile(recipientId);
 551             }
 552             return null;
 553         }
 554         var profile = account.getProfileStore().getProfile(recipientId);
 555
 556         var now = new Date().getTime();
 557         // Profiles are cached for 24h before retrieving them again, unless forced
 558         if (!force && profile != null && now - profile.getLastUpdateTimestamp() < 24 * 60 * 60 * 1000) {
 559             return profile;
 560         }
 561
 562         synchronized (pendingProfileRequest) {
 563             if (pendingProfileRequest.contains(recipientId)) {
 564                 return profile;
 565             }
 566             pendingProfileRequest.add(recipientId);
 567         }
 568         final SignalServiceProfile encryptedProfile;
 569         try {
 570             encryptedProfile = retrieveEncryptedProfile(recipientId);
 571         } finally {
 572             synchronized (pendingProfileRequest) {
 573                 pendingProfileRequest.remove(recipientId);
 574             }
 575         }
 576         if (encryptedProfile == null) {
 577             return null;
 578         }
 579
 580         profile = decryptProfileAndDownloadAvatar(recipientId, profileKey, encryptedProfile);
 581         account.getProfileStore().storeProfile(recipientId, profile);
 582
 583         return profile;
 584     }
 585
 586     private SignalServiceProfile retrieveEncryptedProfile(RecipientId recipientId) {
 587         try {
 588             return retrieveProfileAndCredential(recipientId, SignalServiceProfile.RequestType.PROFILE).getProfile();
 589         } catch (IOException e) {
 590             logger.warn("Failed to retrieve profile, ignoring: {}", e.getMessage());
 591             return null;
 592         }
 593     }
 594
 595     private ProfileAndCredential retrieveProfileAndCredential(
 596             final RecipientId recipientId, final SignalServiceProfile.RequestType requestType
 597     ) throws IOException {
 598         final var profileAndCredential = profileHelper.retrieveProfileSync(recipientId, requestType);
 599         final var profile = profileAndCredential.getProfile();
 600
 601         try {
 602             var newIdentity = account.getIdentityKeyStore()
 603                     .saveIdentity(recipientId,
 604                             new IdentityKey(Base64.getDecoder().decode(profile.getIdentityKey())),
 605                             new Date());
 606
 607             if (newIdentity) {
 608                 account.getSessionStore().archiveSessions(recipientId);
 609             }
 610         } catch (InvalidKeyException ignored) {
 611             logger.warn("Got invalid identity key in profile for {}",
 612                     resolveSignalServiceAddress(recipientId).getLegacyIdentifier());
 613         }
 614         return profileAndCredential;
 615     }
 616
 617     private ProfileKeyCredential getRecipientProfileKeyCredential(RecipientId recipientId) {
 618         var profileKeyCredential = account.getProfileStore().getProfileKeyCredential(recipientId);
 619         if (profileKeyCredential != null) {
 620             return profileKeyCredential;
 621         }
 622
 623         ProfileAndCredential profileAndCredential;
 624         try {
 625             profileAndCredential = retrieveProfileAndCredential(recipientId,
 626                     SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 627         } catch (IOException e) {
 628             logger.warn("Failed to retrieve profile key credential, ignoring: {}", e.getMessage());
 629             return null;
 630         }
 631
 632         profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 633         account.getProfileStore().storeProfileKeyCredential(recipientId, profileKeyCredential);
 634
 635         var profileKey = account.getProfileStore().getProfileKey(recipientId);
 636         if (profileKey != null) {
 637             final var profile = decryptProfileAndDownloadAvatar(recipientId,
 638                     profileKey,
 639                     profileAndCredential.getProfile());
 640             account.getProfileStore().storeProfile(recipientId, profile);
 641         }
 642
 643         return profileKeyCredential;
 644     }
 645
 646     private Profile decryptProfileAndDownloadAvatar(
 647             final RecipientId recipientId, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 648     ) {
 649         if (encryptedProfile.getAvatar() != null) {
 650             downloadProfileAvatar(resolveSignalServiceAddress(recipientId), encryptedProfile.getAvatar(), profileKey);
 651         }
 652
 653         return ProfileUtils.decryptProfile(profileKey, encryptedProfile);
 654     }
 655
 656     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(GroupId groupId) throws IOException {
 657         final var streamDetails = avatarStore.retrieveGroupAvatar(groupId);
 658         if (streamDetails == null) {
 659             return Optional.absent();
 660         }
 661
 662         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 663     }
 664
 665     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(SignalServiceAddress address) throws IOException {
 666         final var streamDetails = avatarStore.retrieveContactAvatar(address);
 667         if (streamDetails == null) {
 668             return Optional.absent();
 669         }
 670
 671         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 672     }
 673
 674     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 675         var g = getGroup(groupId);
 676         if (g == null) {
 677             throw new GroupNotFoundException(groupId);
 678         }
 679         if (!g.isMember(account.getSelfRecipientId())) {
 680             throw new NotAGroupMemberException(groupId, g.getTitle());
 681         }
 682         return g;
 683     }
 684
 685     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 686         var g = getGroup(groupId);
 687         if (g == null) {
 688             throw new GroupNotFoundException(groupId);
 689         }
 690         if (!g.isMember(account.getSelfRecipientId()) && !g.isPendingMember(account.getSelfRecipientId())) {
 691             throw new NotAGroupMemberException(groupId, g.getTitle());
 692         }
 693         return g;
 694     }
 695
 696     public List<GroupInfo> getGroups() {
 697         return account.getGroupStore().getGroups();
 698     }
 699
 700     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 701             String messageText, List<String> attachments, GroupId groupId
 702     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 703         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 704         if (attachments != null) {
 705             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 706         }
 707
 708         return sendGroupMessage(messageBuilder, groupId);
 709     }
 710
 711     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 712             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, GroupId groupId
 713     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 714         var targetAuthorRecipientId = canonicalizeAndResolveRecipient(targetAuthor);
 715         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 716                 remove,
 717                 resolveSignalServiceAddress(targetAuthorRecipientId),
 718                 targetSentTimestamp);
 719         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
 720
 721         return sendGroupMessage(messageBuilder, groupId);
 722     }
 723
 724     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 725             SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
 726     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 727         final var g = getGroupForSending(groupId);
 728
 729         GroupUtils.setGroupContext(messageBuilder, g);
 730         messageBuilder.withExpiration(g.getMessageExpirationTime());
 731
 732         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfRecipientId()));
 733     }
 734
 735     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(GroupId groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 736         SignalServiceDataMessage.Builder messageBuilder;
 737
 738         final var g = getGroupForUpdating(groupId);
 739         if (g instanceof GroupInfoV1) {
 740             var groupInfoV1 = (GroupInfoV1) g;
 741             var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT).withId(groupId.serialize()).build();
 742             messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 743             groupInfoV1.removeMember(account.getSelfRecipientId());
 744             account.getGroupStore().updateGroup(groupInfoV1);
 745         } else {
 746             final var groupInfoV2 = (GroupInfoV2) g;
 747             final var groupGroupChangePair = groupHelper.leaveGroup(groupInfoV2);
 748             groupInfoV2.setGroup(groupGroupChangePair.first(), this::resolveRecipient);
 749             messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 750             account.getGroupStore().updateGroup(groupInfoV2);
 751         }
 752
 753         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfRecipientId()));
 754     }
 755
 756     public Pair<GroupId, List<SendMessageResult>> updateGroup(
 757             GroupId groupId, String name, List<String> members, File avatarFile
 758     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 759         return sendUpdateGroupMessage(groupId,
 760                 name,
 761                 members == null ? null : getSignalServiceAddresses(members),
 762                 avatarFile);
 763     }
 764
 765     private Pair<GroupId, List<SendMessageResult>> sendUpdateGroupMessage(
 766             GroupId groupId, String name, Set<RecipientId> members, File avatarFile
 767     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 768         GroupInfo g;
 769         SignalServiceDataMessage.Builder messageBuilder;
 770         if (groupId == null) {
 771             // Create new group
 772             var gv2Pair = groupHelper.createGroupV2(name == null ? "" : name,
 773                     members == null ? Set.of() : members,
 774                     avatarFile);
 775             if (gv2Pair == null) {
 776                 var gv1 = new GroupInfoV1(GroupIdV1.createRandom());
 777                 gv1.addMembers(List.of(account.getSelfRecipientId()));
 778                 updateGroupV1(gv1, name, members, avatarFile);
 779                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 780                 g = gv1;
 781             } else {
 782                 final var gv2 = gv2Pair.first();
 783                 final var decryptedGroup = gv2Pair.second();
 784
 785                 gv2.setGroup(decryptedGroup, this::resolveRecipient);
 786                 if (avatarFile != null) {
 787                     avatarStore.storeGroupAvatar(gv2.getGroupId(),
 788                             outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 789                 }
 790                 messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 791                 g = gv2;
 792             }
 793         } else {
 794             var group = getGroupForUpdating(groupId);
 795             if (group instanceof GroupInfoV2) {
 796                 final var groupInfoV2 = (GroupInfoV2) group;
 797
 798                 Pair<Long, List<SendMessageResult>> result = null;
 799                 if (groupInfoV2.isPendingMember(account.getSelfRecipientId())) {
 800                     var groupGroupChangePair = groupHelper.acceptInvite(groupInfoV2);
 801                     result = sendUpdateGroupMessage(groupInfoV2,
 802                             groupGroupChangePair.first(),
 803                             groupGroupChangePair.second());
 804                 }
 805
 806                 if (members != null) {
 807                     final var newMembers = new HashSet<>(members);
 808                     newMembers.removeAll(group.getMembers());
 809                     if (newMembers.size() > 0) {
 810                         var groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2, newMembers);
 811                         result = sendUpdateGroupMessage(groupInfoV2,
 812                                 groupGroupChangePair.first(),
 813                                 groupGroupChangePair.second());
 814                     }
 815                 }
 816                 if (result == null || name != null || avatarFile != null) {
 817                     var groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2, name, avatarFile);
 818                     if (avatarFile != null) {
 819                         avatarStore.storeGroupAvatar(groupInfoV2.getGroupId(),
 820                                 outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 821                     }
 822                     result = sendUpdateGroupMessage(groupInfoV2,
 823                             groupGroupChangePair.first(),
 824                             groupGroupChangePair.second());
 825                 }
 826
 827                 return new Pair<>(group.getGroupId(), result.second());
 828             } else {
 829                 var gv1 = (GroupInfoV1) group;
 830                 updateGroupV1(gv1, name, members, avatarFile);
 831                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 832                 g = gv1;
 833             }
 834         }
 835
 836         account.getGroupStore().updateGroup(g);
 837
 838         final var result = sendMessage(messageBuilder,
 839                 g.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 840         return new Pair<>(g.getGroupId(), result.second());
 841     }
 842
 843     private void updateGroupV1(
 844             final GroupInfoV1 g, final String name, final Collection<RecipientId> members, final File avatarFile
 845     ) throws IOException {
 846         if (name != null) {
 847             g.name = name;
 848         }
 849
 850         if (members != null) {
 851             final var newMemberAddresses = members.stream()
 852                     .filter(member -> !g.isMember(member))
 853                     .map(this::resolveSignalServiceAddress)
 854                     .collect(Collectors.toList());
 855             final var newE164Members = new HashSet<String>();
 856             for (var member : newMemberAddresses) {
 857                 if (!member.getNumber().isPresent()) {
 858                     continue;
 859                 }
 860                 newE164Members.add(member.getNumber().get());
 861             }
 862
 863             final var registeredUsers = getRegisteredUsers(newE164Members);
 864             if (registeredUsers.size() != newE164Members.size()) {
 865                 // Some of the new members are not registered on Signal
 866                 newE164Members.removeAll(registeredUsers.keySet());
 867                 throw new IOException("Failed to add members "
 868                         + String.join(", ", newE164Members)
 869                         + " to group: Not registered on Signal");
 870             }
 871
 872             g.addMembers(members);
 873         }
 874
 875         if (avatarFile != null) {
 876             avatarStore.storeGroupAvatar(g.getGroupId(),
 877                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 878         }
 879     }
 880
 881     public Pair<GroupId, List<SendMessageResult>> joinGroup(
 882             GroupInviteLinkUrl inviteLinkUrl
 883     ) throws IOException, GroupLinkNotActiveException {
 884         return sendJoinGroupMessage(inviteLinkUrl);
 885     }
 886
 887     private Pair<GroupId, List<SendMessageResult>> sendJoinGroupMessage(
 888             GroupInviteLinkUrl inviteLinkUrl
 889     ) throws IOException, GroupLinkNotActiveException {
 890         final var groupJoinInfo = groupHelper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
 891                 inviteLinkUrl.getPassword());
 892         final var groupChange = groupHelper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
 893                 inviteLinkUrl.getPassword(),
 894                 groupJoinInfo);
 895         final var group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
 896                 groupJoinInfo.getRevision() + 1,
 897                 groupChange.toByteArray());
 898
 899         if (group.getGroup() == null) {
 900             // Only requested member, can't send update to group members
 901             return new Pair<>(group.getGroupId(), List.of());
 902         }
 903
 904         final var result = sendUpdateGroupMessage(group, group.getGroup(), groupChange);
 905
 906         return new Pair<>(group.getGroupId(), result.second());
 907     }
 908
 909     private static int currentTimeDays() {
 910         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
 911     }
 912
 913     private GroupsV2AuthorizationString getGroupAuthForToday(
 914             final GroupSecretParams groupSecretParams
 915     ) throws IOException {
 916         final var today = currentTimeDays();
 917         // Returns credentials for the next 7 days
 918         final var credentials = groupsV2Api.getCredentials(today);
 919         // TODO cache credentials until they expire
 920         var authCredentialResponse = credentials.get(today);
 921         try {
 922             return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
 923                     today,
 924                     groupSecretParams,
 925                     authCredentialResponse);
 926         } catch (VerificationFailedException e) {
 927             throw new IOException(e);
 928         }
 929     }
 930
 931     private Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 932             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
 933     ) throws IOException {
 934         group.setGroup(newDecryptedGroup, this::resolveRecipient);
 935         final var messageBuilder = getGroupUpdateMessageBuilder(group, groupChange.toByteArray());
 936         account.getGroupStore().updateGroup(group);
 937         return sendMessage(messageBuilder, group.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 938     }
 939
 940     Pair<Long, List<SendMessageResult>> sendGroupInfoMessage(
 941             GroupIdV1 groupId, SignalServiceAddress recipient
 942     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 943         GroupInfoV1 g;
 944         var group = getGroupForSending(groupId);
 945         if (!(group instanceof GroupInfoV1)) {
 946             throw new RuntimeException("Received an invalid group request for a v2 group!");
 947         }
 948         g = (GroupInfoV1) group;
 949
 950         final var recipientId = resolveRecipient(recipient);
 951         if (!g.isMember(recipientId)) {
 952             throw new NotAGroupMemberException(groupId, g.name);
 953         }
 954
 955         var messageBuilder = getGroupUpdateMessageBuilder(g);
 956
 957         // Send group message only to the recipient who requested it
 958         return sendMessage(messageBuilder, Set.of(recipientId));
 959     }
 960
 961     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
 962         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 963                 .withId(g.getGroupId().serialize())
 964                 .withName(g.name)
 965                 .withMembers(g.getMembers()
 966                         .stream()
 967                         .map(this::resolveSignalServiceAddress)
 968                         .collect(Collectors.toList()));
 969
 970         try {
 971             final var attachment = createGroupAvatarAttachment(g.getGroupId());
 972             if (attachment.isPresent()) {
 973                 group.withAvatar(attachment.get());
 974             }
 975         } catch (IOException e) {
 976             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
 977         }
 978
 979         return SignalServiceDataMessage.newBuilder()
 980                 .asGroupMessage(group.build())
 981                 .withExpiration(g.getMessageExpirationTime());
 982     }
 983
 984     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
 985         var group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
 986                 .withRevision(g.getGroup().getRevision())
 987                 .withSignedGroupChange(signedGroupChange);
 988         return SignalServiceDataMessage.newBuilder()
 989                 .asGroupMessage(group.build())
 990                 .withExpiration(g.getMessageExpirationTime());
 991     }
 992
 993     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
 994             GroupIdV1 groupId, SignalServiceAddress recipient
 995     ) throws IOException {
 996         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO).withId(groupId.serialize());
 997
 998         var messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group.build());
 999
1000         // Send group info request message to the recipient who sent us a message with this groupId
1001         return sendMessage(messageBuilder, Set.of(resolveRecipient(recipient)));
1002     }
1003
1004     void sendReceipt(
1005             SignalServiceAddress remoteAddress, long messageId
1006     ) throws IOException, UntrustedIdentityException {
1007         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
1008                 List.of(messageId),
1009                 System.currentTimeMillis());
1010
1011         createMessageSender().sendReceipt(remoteAddress,
1012                 unidentifiedAccessHelper.getAccessFor(resolveRecipient(remoteAddress)),
1013                 receiptMessage);
1014     }
1015
1016     public Pair<Long, List<SendMessageResult>> sendMessage(
1017             String messageText, List<String> attachments, List<String> recipients
1018     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
1019         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
1020         if (attachments != null) {
1021             var attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
1022
1023             // Upload attachments here, so we only upload once even for multiple recipients
1024             var messageSender = createMessageSender();
1025             var attachmentPointers = new ArrayList<SignalServiceAttachment>(attachmentStreams.size());
1026             for (var attachment : attachmentStreams) {
1027                 if (attachment.isStream()) {
1028                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
1029                 } else if (attachment.isPointer()) {
1030                     attachmentPointers.add(attachment.asPointer());
1031                 }
1032             }
1033
1034             messageBuilder.withAttachments(attachmentPointers);
1035         }
1036         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1037     }
1038
1039     public Pair<Long, SendMessageResult> sendSelfMessage(
1040             String messageText, List<String> attachments
1041     ) throws IOException, AttachmentInvalidException {
1042         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
1043         if (attachments != null) {
1044             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
1045         }
1046         return sendSelfMessage(messageBuilder);
1047     }
1048
1049     public Pair<Long, List<SendMessageResult>> sendRemoteDeleteMessage(
1050             long targetSentTimestamp, List<String> recipients
1051     ) throws IOException, InvalidNumberException {
1052         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1053         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
1054         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1055     }
1056
1057     public Pair<Long, List<SendMessageResult>> sendGroupRemoteDeleteMessage(
1058             long targetSentTimestamp, GroupId groupId
1059     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1060         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1061         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
1062         return sendGroupMessage(messageBuilder, groupId);
1063     }
1064
1065     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
1066             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
1067     ) throws IOException, InvalidNumberException {
1068         var targetAuthorRecipientId = canonicalizeAndResolveRecipient(targetAuthor);
1069         var reaction = new SignalServiceDataMessage.Reaction(emoji,
1070                 remove,
1071                 resolveSignalServiceAddress(targetAuthorRecipientId),
1072                 targetSentTimestamp);
1073         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
1074         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1075     }
1076
1077     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1078         var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
1079
1080         final var signalServiceAddresses = getSignalServiceAddresses(recipients);
1081         try {
1082             return sendMessage(messageBuilder, signalServiceAddresses);
1083         } catch (Exception e) {
1084             for (var address : signalServiceAddresses) {
1085                 handleEndSession(address);
1086             }
1087             throw e;
1088         }
1089     }
1090
1091     public String getContactName(String number) throws InvalidNumberException {
1092         var contact = account.getContactStore().getContact(canonicalizeAndResolveRecipient(number));
1093         return contact == null || contact.getName() == null ? "" : contact.getName();
1094     }
1095
1096     public void setContactName(String number, String name) throws InvalidNumberException, NotMasterDeviceException {
1097         if (!account.isMasterDevice()) {
1098             throw new NotMasterDeviceException();
1099         }
1100         final var recipientId = canonicalizeAndResolveRecipient(number);
1101         var contact = account.getContactStore().getContact(recipientId);
1102         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1103         account.getContactStore().storeContact(recipientId, builder.withName(name).build());
1104     }
1105
1106     public void setContactBlocked(
1107             String number, boolean blocked
1108     ) throws InvalidNumberException, NotMasterDeviceException {
1109         if (!account.isMasterDevice()) {
1110             throw new NotMasterDeviceException();
1111         }
1112         setContactBlocked(canonicalizeAndResolveRecipient(number), blocked);
1113     }
1114
1115     private void setContactBlocked(RecipientId recipientId, boolean blocked) {
1116         var contact = account.getContactStore().getContact(recipientId);
1117         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1118         account.getContactStore().storeContact(recipientId, builder.withBlocked(blocked).build());
1119     }
1120
1121     public void setGroupBlocked(final GroupId groupId, final boolean blocked) throws GroupNotFoundException {
1122         var group = getGroup(groupId);
1123         if (group == null) {
1124             throw new GroupNotFoundException(groupId);
1125         }
1126
1127         group.setBlocked(blocked);
1128         account.getGroupStore().updateGroup(group);
1129     }
1130
1131     private void setExpirationTimer(RecipientId recipientId, int messageExpirationTimer) {
1132         var contact = account.getContactStore().getContact(recipientId);
1133         if (contact != null && contact.getMessageExpirationTime() == messageExpirationTimer) {
1134             return;
1135         }
1136         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1137         account.getContactStore()
1138                 .storeContact(recipientId, builder.withMessageExpirationTime(messageExpirationTimer).build());
1139     }
1140
1141     private void sendExpirationTimerUpdate(RecipientId recipientId) throws IOException {
1142         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
1143         sendMessage(messageBuilder, Set.of(recipientId));
1144     }
1145
1146     /**
1147      * Change the expiration timer for a contact
1148      */
1149     public void setExpirationTimer(
1150             String number, int messageExpirationTimer
1151     ) throws IOException, InvalidNumberException {
1152         var recipientId = canonicalizeAndResolveRecipient(number);
1153         setExpirationTimer(recipientId, messageExpirationTimer);
1154         sendExpirationTimerUpdate(recipientId);
1155     }
1156
1157     /**
1158      * Change the expiration timer for a group
1159      */
1160     public void setExpirationTimer(GroupId groupId, int messageExpirationTimer) {
1161         var g = getGroup(groupId);
1162         if (g instanceof GroupInfoV1) {
1163             var groupInfoV1 = (GroupInfoV1) g;
1164             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1165             account.getGroupStore().updateGroup(groupInfoV1);
1166         } else {
1167             throw new RuntimeException("TODO Not implemented!");
1168         }
1169     }
1170
1171     /**
1172      * Upload the sticker pack from path.
1173      *
1174      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1175      * @return if successful, returns the URL to install the sticker pack in the signal app
1176      */
1177     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1178         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
1179
1180         var messageSender = createMessageSender();
1181
1182         var packKey = KeyUtils.createStickerUploadKey();
1183         var packId = messageSender.uploadStickerManifest(manifest, packKey);
1184
1185         var sticker = new Sticker(StickerPackId.deserialize(Hex.fromStringCondensed(packId)), packKey);
1186         account.getStickerStore().updateSticker(sticker);
1187
1188         try {
1189             return new URI("https",
1190                     "signal.art",
1191                     "/addstickers/",
1192                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1193                             Hex.toStringCondensed(packKey),
1194                             StandardCharsets.UTF_8)).toString();
1195         } catch (URISyntaxException e) {
1196             throw new AssertionError(e);
1197         }
1198     }
1199
1200     public void requestAllSyncData() throws IOException {
1201         requestSyncGroups();
1202         requestSyncContacts();
1203         requestSyncBlocked();
1204         requestSyncConfiguration();
1205         requestSyncKeys();
1206     }
1207
1208     private void requestSyncGroups() throws IOException {
1209         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1210                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1211                 .build();
1212         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1213         try {
1214             sendSyncMessage(message);
1215         } catch (UntrustedIdentityException e) {
1216             throw new AssertionError(e);
1217         }
1218     }
1219
1220     private void requestSyncContacts() throws IOException {
1221         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1222                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1223                 .build();
1224         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1225         try {
1226             sendSyncMessage(message);
1227         } catch (UntrustedIdentityException e) {
1228             throw new AssertionError(e);
1229         }
1230     }
1231
1232     private void requestSyncBlocked() throws IOException {
1233         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1234                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1235                 .build();
1236         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1237         try {
1238             sendSyncMessage(message);
1239         } catch (UntrustedIdentityException e) {
1240             throw new AssertionError(e);
1241         }
1242     }
1243
1244     private void requestSyncConfiguration() throws IOException {
1245         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1246                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1247                 .build();
1248         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1249         try {
1250             sendSyncMessage(message);
1251         } catch (UntrustedIdentityException e) {
1252             throw new AssertionError(e);
1253         }
1254     }
1255
1256     private void requestSyncKeys() throws IOException {
1257         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1258                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
1259                 .build();
1260         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1261         try {
1262             sendSyncMessage(message);
1263         } catch (UntrustedIdentityException e) {
1264             throw new AssertionError(e);
1265         }
1266     }
1267
1268     private byte[] getSenderCertificate() {
1269         // TODO support UUID capable sender certificates
1270         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1271         byte[] certificate;
1272         try {
1273             certificate = accountManager.getSenderCertificate();
1274         } catch (IOException e) {
1275             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1276             return null;
1277         }
1278         // TODO cache for a day
1279         return certificate;
1280     }
1281
1282     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1283         var messageSender = createMessageSender();
1284         messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1285     }
1286
1287     private Set<RecipientId> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1288         final var signalServiceAddresses = new HashSet<SignalServiceAddress>(numbers.size());
1289         final var addressesMissingUuid = new HashSet<SignalServiceAddress>();
1290
1291         for (var number : numbers) {
1292             final var resolvedAddress = resolveSignalServiceAddress(canonicalizeAndResolveRecipient(number));
1293             if (resolvedAddress.getUuid().isPresent()) {
1294                 signalServiceAddresses.add(resolvedAddress);
1295             } else {
1296                 addressesMissingUuid.add(resolvedAddress);
1297             }
1298         }
1299
1300         final var numbersMissingUuid = addressesMissingUuid.stream()
1301                 .map(a -> a.getNumber().get())
1302                 .collect(Collectors.toSet());
1303         Map<String, UUID> registeredUsers;
1304         try {
1305             registeredUsers = getRegisteredUsers(numbersMissingUuid);
1306         } catch (IOException e) {
1307             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1308             registeredUsers = Map.of();
1309         }
1310
1311         for (var address : addressesMissingUuid) {
1312             final var number = address.getNumber().get();
1313             if (registeredUsers.containsKey(number)) {
1314                 final var newAddress = resolveSignalServiceAddress(resolveRecipientTrusted(new SignalServiceAddress(
1315                         registeredUsers.get(number),
1316                         number)));
1317                 signalServiceAddresses.add(newAddress);
1318             } else {
1319                 signalServiceAddresses.add(address);
1320             }
1321         }
1322
1323         return signalServiceAddresses.stream().map(this::resolveRecipient).collect(Collectors.toSet());
1324     }
1325
1326     private RecipientId refreshRegisteredUser(RecipientId recipientId) throws IOException {
1327         final var address = resolveSignalServiceAddress(recipientId);
1328         if (!address.getNumber().isPresent()) {
1329             return recipientId;
1330         }
1331         final var number = address.getNumber().get();
1332         final var uuidMap = getRegisteredUsers(Set.of(number));
1333         return resolveRecipientTrusted(new SignalServiceAddress(uuidMap.getOrDefault(number, null), number));
1334     }
1335
1336     private Map<String, UUID> getRegisteredUsers(final Set<String> numbers) throws IOException {
1337         try {
1338             return accountManager.getRegisteredUsers(ServiceConfig.getIasKeyStore(),
1339                     numbers,
1340                     serviceEnvironmentConfig.getCdsMrenclave());
1341         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
1342             throw new IOException(e);
1343         }
1344     }
1345
1346     private Pair<Long, List<SendMessageResult>> sendMessage(
1347             SignalServiceDataMessage.Builder messageBuilder, Set<RecipientId> recipientIds
1348     ) throws IOException {
1349         final var timestamp = System.currentTimeMillis();
1350         messageBuilder.withTimestamp(timestamp);
1351         getOrCreateMessagePipe();
1352         getOrCreateUnidentifiedMessagePipe();
1353         SignalServiceDataMessage message = null;
1354         try {
1355             message = messageBuilder.build();
1356             if (message.getGroupContext().isPresent()) {
1357                 try {
1358                     var messageSender = createMessageSender();
1359                     final var isRecipientUpdate = false;
1360                     final var recipientIdList = new ArrayList<>(recipientIds);
1361                     final var addresses = recipientIdList.stream()
1362                             .map(this::resolveSignalServiceAddress)
1363                             .collect(Collectors.toList());
1364                     var result = messageSender.sendMessage(addresses,
1365                             unidentifiedAccessHelper.getAccessFor(recipientIdList),
1366                             isRecipientUpdate,
1367                             message);
1368
1369                     for (var r : result) {
1370                         if (r.getIdentityFailure() != null) {
1371                             final var recipientId = resolveRecipient(r.getAddress());
1372                             final var newIdentity = account.getIdentityKeyStore()
1373                                     .saveIdentity(recipientId, r.getIdentityFailure().getIdentityKey(), new Date());
1374                             if (newIdentity) {
1375                                 account.getSessionStore().archiveSessions(recipientId);
1376                             }
1377                         }
1378                     }
1379
1380                     return new Pair<>(timestamp, result);
1381                 } catch (UntrustedIdentityException e) {
1382                     return new Pair<>(timestamp, List.of());
1383                 }
1384             } else {
1385                 // Send to all individually, so sync messages are sent correctly
1386                 messageBuilder.withProfileKey(account.getProfileKey().serialize());
1387                 var results = new ArrayList<SendMessageResult>(recipientIds.size());
1388                 for (var recipientId : recipientIds) {
1389                     final var contact = account.getContactStore().getContact(recipientId);
1390                     final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
1391                     messageBuilder.withExpiration(expirationTime);
1392                     message = messageBuilder.build();
1393                     results.add(sendMessage(recipientId, message));
1394                 }
1395                 return new Pair<>(timestamp, results);
1396             }
1397         } finally {
1398             if (message != null && message.isEndSession()) {
1399                 for (var recipient : recipientIds) {
1400                     handleEndSession(recipient);
1401                 }
1402             }
1403         }
1404     }
1405
1406     private Pair<Long, SendMessageResult> sendSelfMessage(
1407             SignalServiceDataMessage.Builder messageBuilder
1408     ) throws IOException {
1409         final var timestamp = System.currentTimeMillis();
1410         messageBuilder.withTimestamp(timestamp);
1411         getOrCreateMessagePipe();
1412         getOrCreateUnidentifiedMessagePipe();
1413         final var recipientId = account.getSelfRecipientId();
1414
1415         final var contact = account.getContactStore().getContact(recipientId);
1416         final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
1417         messageBuilder.withExpiration(expirationTime);
1418
1419         var message = messageBuilder.build();
1420         final var result = sendSelfMessage(message);
1421         return new Pair<>(timestamp, result);
1422     }
1423
1424     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1425         var messageSender = createMessageSender();
1426
1427         var recipientId = account.getSelfRecipientId();
1428
1429         final var unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipientId);
1430         var recipient = resolveSignalServiceAddress(recipientId);
1431         var transcript = new SentTranscriptMessage(Optional.of(recipient),
1432                 message.getTimestamp(),
1433                 message,
1434                 message.getExpiresInSeconds(),
1435                 Map.of(recipient, unidentifiedAccess.isPresent()),
1436                 false);
1437         var syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1438
1439         try {
1440             var startTime = System.currentTimeMillis();
1441             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1442             return SendMessageResult.success(recipient,
1443                     unidentifiedAccess.isPresent(),
1444                     false,
1445                     System.currentTimeMillis() - startTime);
1446         } catch (UntrustedIdentityException e) {
1447             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1448         }
1449     }
1450
1451     private SendMessageResult sendMessage(
1452             RecipientId recipientId, SignalServiceDataMessage message
1453     ) throws IOException {
1454         var messageSender = createMessageSender();
1455
1456         final var address = resolveSignalServiceAddress(recipientId);
1457         try {
1458             try {
1459                 return messageSender.sendMessage(address, unidentifiedAccessHelper.getAccessFor(recipientId), message);
1460             } catch (UnregisteredUserException e) {
1461                 final var newRecipientId = refreshRegisteredUser(recipientId);
1462                 return messageSender.sendMessage(resolveSignalServiceAddress(newRecipientId),
1463                         unidentifiedAccessHelper.getAccessFor(newRecipientId),
1464                         message);
1465             }
1466         } catch (UntrustedIdentityException e) {
1467             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1468         }
1469     }
1470
1471     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1472         var cipher = new SignalServiceCipher(account.getSelfAddress(),
1473                 account.getSignalProtocolStore(),
1474                 certificateValidator);
1475         try {
1476             return cipher.decrypt(envelope);
1477         } catch (ProtocolUntrustedIdentityException e) {
1478             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1479                 throw (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1480             }
1481             throw new AssertionError(e);
1482         }
1483     }
1484
1485     private void handleEndSession(RecipientId recipientId) {
1486         account.getSessionStore().deleteAllSessions(recipientId);
1487     }
1488
1489     private List<HandleAction> handleSignalServiceDataMessage(
1490             SignalServiceDataMessage message,
1491             boolean isSync,
1492             SignalServiceAddress source,
1493             SignalServiceAddress destination,
1494             boolean ignoreAttachments
1495     ) {
1496         var actions = new ArrayList<HandleAction>();
1497         if (message.getGroupContext().isPresent()) {
1498             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1499                 var groupInfo = message.getGroupContext().get().getGroupV1().get();
1500                 var groupId = GroupId.v1(groupInfo.getGroupId());
1501                 var group = getGroup(groupId);
1502                 if (group == null || group instanceof GroupInfoV1) {
1503                     var groupV1 = (GroupInfoV1) group;
1504                     switch (groupInfo.getType()) {
1505                         case UPDATE: {
1506                             if (groupV1 == null) {
1507                                 groupV1 = new GroupInfoV1(groupId);
1508                             }
1509
1510                             if (groupInfo.getAvatar().isPresent()) {
1511                                 var avatar = groupInfo.getAvatar().get();
1512                                 downloadGroupAvatar(avatar, groupV1.getGroupId());
1513                             }
1514
1515                             if (groupInfo.getName().isPresent()) {
1516                                 groupV1.name = groupInfo.getName().get();
1517                             }
1518
1519                             if (groupInfo.getMembers().isPresent()) {
1520                                 groupV1.addMembers(groupInfo.getMembers()
1521                                         .get()
1522                                         .stream()
1523                                         .map(this::resolveRecipient)
1524                                         .collect(Collectors.toSet()));
1525                             }
1526
1527                             account.getGroupStore().updateGroup(groupV1);
1528                             break;
1529                         }
1530                         case DELIVER:
1531                             if (groupV1 == null && !isSync) {
1532                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1533                             }
1534                             break;
1535                         case QUIT: {
1536                             if (groupV1 != null) {
1537                                 groupV1.removeMember(resolveRecipient(source));
1538                                 account.getGroupStore().updateGroup(groupV1);
1539                             }
1540                             break;
1541                         }
1542                         case REQUEST_INFO:
1543                             if (groupV1 != null && !isSync) {
1544                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
1545                             }
1546                             break;
1547                     }
1548                 } else {
1549                     // Received a group v1 message for a v2 group
1550                 }
1551             }
1552             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1553                 final var groupContext = message.getGroupContext().get().getGroupV2().get();
1554                 final var groupMasterKey = groupContext.getMasterKey();
1555
1556                 getOrMigrateGroup(groupMasterKey,
1557                         groupContext.getRevision(),
1558                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1559             }
1560         }
1561
1562         final var conversationPartnerAddress = isSync ? destination : source;
1563         if (conversationPartnerAddress != null && message.isEndSession()) {
1564             handleEndSession(resolveRecipient(conversationPartnerAddress));
1565         }
1566         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1567             if (message.getGroupContext().isPresent()) {
1568                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1569                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1570                     var group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1571                     if (group != null) {
1572                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1573                             group.messageExpirationTime = message.getExpiresInSeconds();
1574                             account.getGroupStore().updateGroup(group);
1575                         }
1576                     }
1577                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1578                     // disappearing message timer already stored in the DecryptedGroup
1579                 }
1580             } else if (conversationPartnerAddress != null) {
1581                 setExpirationTimer(resolveRecipient(conversationPartnerAddress), message.getExpiresInSeconds());
1582             }
1583         }
1584         if (!ignoreAttachments) {
1585             if (message.getAttachments().isPresent()) {
1586                 for (var attachment : message.getAttachments().get()) {
1587                     downloadAttachment(attachment);
1588                 }
1589             }
1590             if (message.getSharedContacts().isPresent()) {
1591                 for (var contact : message.getSharedContacts().get()) {
1592                     if (contact.getAvatar().isPresent()) {
1593                         downloadAttachment(contact.getAvatar().get().getAttachment());
1594                     }
1595                 }
1596             }
1597         }
1598         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1599             final ProfileKey profileKey;
1600             try {
1601                 profileKey = new ProfileKey(message.getProfileKey().get());
1602             } catch (InvalidInputException e) {
1603                 throw new AssertionError(e);
1604             }
1605             if (source.matches(account.getSelfAddress())) {
1606                 this.account.setProfileKey(profileKey);
1607             }
1608             this.account.getProfileStore().storeProfileKey(resolveRecipient(source), profileKey);
1609         }
1610         if (message.getPreviews().isPresent()) {
1611             final var previews = message.getPreviews().get();
1612             for (var preview : previews) {
1613                 if (preview.getImage().isPresent()) {
1614                     downloadAttachment(preview.getImage().get());
1615                 }
1616             }
1617         }
1618         if (message.getQuote().isPresent()) {
1619             final var quote = message.getQuote().get();
1620
1621             for (var quotedAttachment : quote.getAttachments()) {
1622                 final var thumbnail = quotedAttachment.getThumbnail();
1623                 if (thumbnail != null) {
1624                     downloadAttachment(thumbnail);
1625                 }
1626             }
1627         }
1628         if (message.getSticker().isPresent()) {
1629             final var messageSticker = message.getSticker().get();
1630             final var stickerPackId = StickerPackId.deserialize(messageSticker.getPackId());
1631             var sticker = account.getStickerStore().getSticker(stickerPackId);
1632             if (sticker == null) {
1633                 sticker = new Sticker(stickerPackId, messageSticker.getPackKey());
1634                 account.getStickerStore().updateSticker(sticker);
1635             }
1636         }
1637         return actions;
1638     }
1639
1640     private GroupInfoV2 getOrMigrateGroup(
1641             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1642     ) {
1643         final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1644
1645         var groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1646         var groupInfo = getGroup(groupId);
1647         final GroupInfoV2 groupInfoV2;
1648         if (groupInfo instanceof GroupInfoV1) {
1649             // Received a v2 group message for a v1 group, we need to locally migrate the group
1650             account.getGroupStore().deleteGroupV1(((GroupInfoV1) groupInfo).getGroupId());
1651             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1652             logger.info("Locally migrated group {} to group v2, id: {}",
1653                     groupInfo.getGroupId().toBase64(),
1654                     groupInfoV2.getGroupId().toBase64());
1655         } else if (groupInfo instanceof GroupInfoV2) {
1656             groupInfoV2 = (GroupInfoV2) groupInfo;
1657         } else {
1658             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1659         }
1660
1661         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1662             DecryptedGroup group = null;
1663             if (signedGroupChange != null
1664                     && groupInfoV2.getGroup() != null
1665                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1666                 group = groupHelper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(), signedGroupChange, groupMasterKey);
1667             }
1668             if (group == null) {
1669                 group = groupHelper.getDecryptedGroup(groupSecretParams);
1670             }
1671             if (group != null) {
1672                 storeProfileKeysFromMembers(group);
1673                 final var avatar = group.getAvatar();
1674                 if (avatar != null && !avatar.isEmpty()) {
1675                     downloadGroupAvatar(groupId, groupSecretParams, avatar);
1676                 }
1677             }
1678             groupInfoV2.setGroup(group, this::resolveRecipient);
1679             account.getGroupStore().updateGroup(groupInfoV2);
1680         }
1681
1682         return groupInfoV2;
1683     }
1684
1685     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1686         for (var member : group.getMembersList()) {
1687             final var uuid = UuidUtil.parseOrThrow(member.getUuid().toByteArray());
1688             final var recipientId = account.getRecipientStore().resolveRecipient(uuid);
1689             try {
1690                 account.getProfileStore()
1691                         .storeProfileKey(recipientId, new ProfileKey(member.getProfileKey().toByteArray()));
1692             } catch (InvalidInputException ignored) {
1693             }
1694         }
1695     }
1696
1697     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1698         Set<HandleAction> queuedActions = new HashSet<>();
1699         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
1700             var actions = retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
1701             if (actions != null) {
1702                 queuedActions.addAll(actions);
1703             }
1704         }
1705         for (var action : queuedActions) {
1706             try {
1707                 action.execute(this);
1708             } catch (Throwable e) {
1709                 logger.warn("Message action failed.", e);
1710             }
1711         }
1712     }
1713
1714     private List<HandleAction> retryFailedReceivedMessage(
1715             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
1716     ) {
1717         var envelope = cachedMessage.loadEnvelope();
1718         if (envelope == null) {
1719             return null;
1720         }
1721         SignalServiceContent content = null;
1722         List<HandleAction> actions = null;
1723         if (!envelope.isReceipt()) {
1724             try {
1725                 content = decryptMessage(envelope);
1726             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1727                 if (!envelope.hasSource()) {
1728                     final var identifier = ((org.whispersystems.libsignal.UntrustedIdentityException) e).getName();
1729                     final var recipientId = resolveRecipient(identifier);
1730                     try {
1731                         account.getMessageCache().replaceSender(cachedMessage, recipientId);
1732                     } catch (IOException ioException) {
1733                         logger.warn("Failed to move cached message to recipient folder: {}", ioException.getMessage());
1734                     }
1735                 }
1736                 return null;
1737             } catch (Exception er) {
1738                 // All other errors are not recoverable, so delete the cached message
1739                 cachedMessage.delete();
1740                 return null;
1741             }
1742             actions = handleMessage(envelope, content, ignoreAttachments);
1743         }
1744         handler.handleMessage(envelope, content, null);
1745         cachedMessage.delete();
1746         return actions;
1747     }
1748
1749     public void receiveMessages(
1750             long timeout,
1751             TimeUnit unit,
1752             boolean returnOnTimeout,
1753             boolean ignoreAttachments,
1754             ReceiveMessageHandler handler
1755     ) throws IOException {
1756         retryFailedReceivedMessages(handler, ignoreAttachments);
1757
1758         Set<HandleAction> queuedActions = null;
1759
1760         final var messagePipe = getOrCreateMessagePipe();
1761
1762         var hasCaughtUpWithOldMessages = false;
1763
1764         while (true) {
1765             SignalServiceEnvelope envelope;
1766             SignalServiceContent content = null;
1767             Exception exception = null;
1768             final CachedMessage[] cachedMessage = {null};
1769             try {
1770                 var result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1771                     final var recipientId = envelope1.hasSource()
1772                             ? resolveRecipient(envelope1.getSourceIdentifier())
1773                             : null;
1774                     // store message on disk, before acknowledging receipt to the server
1775                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1, recipientId);
1776                 });
1777                 if (result.isPresent()) {
1778                     envelope = result.get();
1779                 } else {
1780                     // Received indicator that server queue is empty
1781                     hasCaughtUpWithOldMessages = true;
1782
1783                     if (queuedActions != null) {
1784                         for (var action : queuedActions) {
1785                             try {
1786                                 action.execute(this);
1787                             } catch (Throwable e) {
1788                                 logger.warn("Message action failed.", e);
1789                             }
1790                         }
1791                         queuedActions.clear();
1792                         queuedActions = null;
1793                     }
1794
1795                     // Continue to wait another timeout for new messages
1796                     continue;
1797                 }
1798             } catch (TimeoutException e) {
1799                 if (returnOnTimeout) return;
1800                 continue;
1801             }
1802
1803             if (envelope.hasSource()) {
1804                 // Store uuid if we don't have it already
1805                 resolveRecipientTrusted(envelope.getSourceAddress());
1806             }
1807             final var notAGroupMember = isNotAGroupMember(envelope, content);
1808             if (!envelope.isReceipt()) {
1809                 try {
1810                     content = decryptMessage(envelope);
1811                 } catch (Exception e) {
1812                     exception = e;
1813                 }
1814                 var actions = handleMessage(envelope, content, ignoreAttachments);
1815                 if (hasCaughtUpWithOldMessages) {
1816                     for (var action : actions) {
1817                         try {
1818                             action.execute(this);
1819                         } catch (Throwable e) {
1820                             logger.warn("Message action failed.", e);
1821                         }
1822                     }
1823                 } else {
1824                     if (queuedActions == null) {
1825                         queuedActions = new HashSet<>();
1826                     }
1827                     queuedActions.addAll(actions);
1828                 }
1829             }
1830             if (isMessageBlocked(envelope, content)) {
1831                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
1832             } else if (notAGroupMember) {
1833                 logger.info("Ignoring a message from a non group member: {}", envelope.getTimestamp());
1834             } else {
1835                 handler.handleMessage(envelope, content, exception);
1836             }
1837             if (cachedMessage[0] != null) {
1838                 if (exception instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1839                     final var identifier = ((org.whispersystems.libsignal.UntrustedIdentityException) exception).getName();
1840                     final var recipientId = resolveRecipient(identifier);
1841                     queuedActions.add(new RetrieveProfileAction(recipientId));
1842                     if (!envelope.hasSource()) {
1843                         try {
1844                             cachedMessage[0] = account.getMessageCache().replaceSender(cachedMessage[0], recipientId);
1845                         } catch (IOException ioException) {
1846                             logger.warn("Failed to move cached message to recipient folder: {}",
1847                                     ioException.getMessage());
1848                         }
1849                     }
1850                 } else {
1851                     cachedMessage[0].delete();
1852                 }
1853             }
1854         }
1855     }
1856
1857     private boolean isMessageBlocked(
1858             SignalServiceEnvelope envelope, SignalServiceContent content
1859     ) {
1860         SignalServiceAddress source;
1861         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1862             source = envelope.getSourceAddress();
1863         } else if (content != null) {
1864             source = content.getSender();
1865         } else {
1866             return false;
1867         }
1868         final var recipientId = resolveRecipient(source);
1869         if (isContactBlocked(recipientId)) {
1870             return true;
1871         }
1872
1873         if (content != null && content.getDataMessage().isPresent()) {
1874             var message = content.getDataMessage().get();
1875             if (message.getGroupContext().isPresent()) {
1876                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1877                 var group = getGroup(groupId);
1878                 if (group != null && group.isBlocked()) {
1879                     return true;
1880                 }
1881             }
1882         }
1883         return false;
1884     }
1885
1886     public boolean isContactBlocked(final String identifier) throws InvalidNumberException {
1887         final var recipientId = canonicalizeAndResolveRecipient(identifier);
1888         return isContactBlocked(recipientId);
1889     }
1890
1891     private boolean isContactBlocked(final RecipientId recipientId) {
1892         var sourceContact = account.getContactStore().getContact(recipientId);
1893         return sourceContact != null && sourceContact.isBlocked();
1894     }
1895
1896     private boolean isNotAGroupMember(
1897             SignalServiceEnvelope envelope, SignalServiceContent content
1898     ) {
1899         SignalServiceAddress source;
1900         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1901             source = envelope.getSourceAddress();
1902         } else if (content != null) {
1903             source = content.getSender();
1904         } else {
1905             return false;
1906         }
1907
1908         if (content != null && content.getDataMessage().isPresent()) {
1909             var message = content.getDataMessage().get();
1910             if (message.getGroupContext().isPresent()) {
1911                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1912                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1913                     if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
1914                         return false;
1915                     }
1916                 }
1917                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1918                 var group = getGroup(groupId);
1919                 if (group != null && !group.isMember(resolveRecipient(source))) {
1920                     return true;
1921                 }
1922             }
1923         }
1924         return false;
1925     }
1926
1927     private List<HandleAction> handleMessage(
1928             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
1929     ) {
1930         var actions = new ArrayList<HandleAction>();
1931         if (content != null) {
1932             final SignalServiceAddress sender;
1933             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1934                 sender = envelope.getSourceAddress();
1935             } else {
1936                 sender = content.getSender();
1937             }
1938
1939             if (content.getDataMessage().isPresent()) {
1940                 var message = content.getDataMessage().get();
1941
1942                 if (content.isNeedsReceipt()) {
1943                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1944                 }
1945
1946                 actions.addAll(handleSignalServiceDataMessage(message,
1947                         false,
1948                         sender,
1949                         account.getSelfAddress(),
1950                         ignoreAttachments));
1951             }
1952             if (content.getSyncMessage().isPresent()) {
1953                 account.setMultiDevice(true);
1954                 var syncMessage = content.getSyncMessage().get();
1955                 if (syncMessage.getSent().isPresent()) {
1956                     var message = syncMessage.getSent().get();
1957                     final var destination = message.getDestination().orNull();
1958                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
1959                             true,
1960                             sender,
1961                             destination,
1962                             ignoreAttachments));
1963                 }
1964                 if (syncMessage.getRequest().isPresent() && account.isMasterDevice()) {
1965                     var rm = syncMessage.getRequest().get();
1966                     if (rm.isContactsRequest()) {
1967                         actions.add(SendSyncContactsAction.create());
1968                     }
1969                     if (rm.isGroupsRequest()) {
1970                         actions.add(SendSyncGroupsAction.create());
1971                     }
1972                     if (rm.isBlockedListRequest()) {
1973                         actions.add(SendSyncBlockedListAction.create());
1974                     }
1975                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
1976                 }
1977                 if (syncMessage.getGroups().isPresent()) {
1978                     File tmpFile = null;
1979                     try {
1980                         tmpFile = IOUtils.createTempFile();
1981                         final var groupsMessage = syncMessage.getGroups().get();
1982                         try (var attachmentAsStream = retrieveAttachmentAsStream(groupsMessage.asPointer(), tmpFile)) {
1983                             var s = new DeviceGroupsInputStream(attachmentAsStream);
1984                             DeviceGroup g;
1985                             while ((g = s.read()) != null) {
1986                                 var syncGroup = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(g.getId()));
1987                                 if (syncGroup != null) {
1988                                     if (g.getName().isPresent()) {
1989                                         syncGroup.name = g.getName().get();
1990                                     }
1991                                     syncGroup.addMembers(g.getMembers()
1992                                             .stream()
1993                                             .map(this::resolveRecipient)
1994                                             .collect(Collectors.toSet()));
1995                                     if (!g.isActive()) {
1996                                         syncGroup.removeMember(account.getSelfRecipientId());
1997                                     } else {
1998                                         // Add ourself to the member set as it's marked as active
1999                                         syncGroup.addMembers(List.of(account.getSelfRecipientId()));
2000                                     }
2001                                     syncGroup.blocked = g.isBlocked();
2002                                     if (g.getColor().isPresent()) {
2003                                         syncGroup.color = g.getColor().get();
2004                                     }
2005
2006                                     if (g.getAvatar().isPresent()) {
2007                                         downloadGroupAvatar(g.getAvatar().get(), syncGroup.getGroupId());
2008                                     }
2009                                     syncGroup.archived = g.isArchived();
2010                                     account.getGroupStore().updateGroup(syncGroup);
2011                                 }
2012                             }
2013                         }
2014                     } catch (Exception e) {
2015                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
2016                                 tmpFile,
2017                                 e.getMessage());
2018                     } finally {
2019                         if (tmpFile != null) {
2020                             try {
2021                                 Files.delete(tmpFile.toPath());
2022                             } catch (IOException e) {
2023                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
2024                                         tmpFile,
2025                                         e.getMessage());
2026                             }
2027                         }
2028                     }
2029                 }
2030                 if (syncMessage.getBlockedList().isPresent()) {
2031                     final var blockedListMessage = syncMessage.getBlockedList().get();
2032                     for (var address : blockedListMessage.getAddresses()) {
2033                         setContactBlocked(resolveRecipient(address), true);
2034                     }
2035                     for (var groupId : blockedListMessage.getGroupIds()
2036                             .stream()
2037                             .map(GroupId::unknownVersion)
2038                             .collect(Collectors.toSet())) {
2039                         try {
2040                             setGroupBlocked(groupId, true);
2041                         } catch (GroupNotFoundException e) {
2042                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
2043                                     groupId.toBase64());
2044                         }
2045                     }
2046                 }
2047                 if (syncMessage.getContacts().isPresent()) {
2048                     File tmpFile = null;
2049                     try {
2050                         tmpFile = IOUtils.createTempFile();
2051                         final var contactsMessage = syncMessage.getContacts().get();
2052                         try (var attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
2053                                 .asPointer(), tmpFile)) {
2054                             var s = new DeviceContactsInputStream(attachmentAsStream);
2055                             DeviceContact c;
2056                             while ((c = s.read()) != null) {
2057                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
2058                                     account.setProfileKey(c.getProfileKey().get());
2059                                 }
2060                                 final var recipientId = resolveRecipientTrusted(c.getAddress());
2061                                 var contact = account.getContactStore().getContact(recipientId);
2062                                 final var builder = contact == null
2063                                         ? Contact.newBuilder()
2064                                         : Contact.newBuilder(contact);
2065                                 if (c.getName().isPresent()) {
2066                                     builder.withName(c.getName().get());
2067                                 }
2068                                 if (c.getColor().isPresent()) {
2069                                     builder.withColor(c.getColor().get());
2070                                 }
2071                                 if (c.getProfileKey().isPresent()) {
2072                                     account.getProfileStore().storeProfileKey(recipientId, c.getProfileKey().get());
2073                                 }
2074                                 if (c.getVerified().isPresent()) {
2075                                     final var verifiedMessage = c.getVerified().get();
2076                                     account.getIdentityKeyStore()
2077                                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2078                                                     verifiedMessage.getIdentityKey(),
2079                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2080                                 }
2081                                 if (c.getExpirationTimer().isPresent()) {
2082                                     builder.withMessageExpirationTime(c.getExpirationTimer().get());
2083                                 }
2084                                 builder.withBlocked(c.isBlocked());
2085                                 builder.withArchived(c.isArchived());
2086                                 account.getContactStore().storeContact(recipientId, builder.build());
2087
2088                                 if (c.getAvatar().isPresent()) {
2089                                     downloadContactAvatar(c.getAvatar().get(), c.getAddress());
2090                                 }
2091                             }
2092                         }
2093                     } catch (Exception e) {
2094                         logger.warn("Failed to handle received sync contacts “{}”, ignoring: {}",
2095                                 tmpFile,
2096                                 e.getMessage());
2097                     } finally {
2098                         if (tmpFile != null) {
2099                             try {
2100                                 Files.delete(tmpFile.toPath());
2101                             } catch (IOException e) {
2102                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2103                                         tmpFile,
2104                                         e.getMessage());
2105                             }
2106                         }
2107                     }
2108                 }
2109                 if (syncMessage.getVerified().isPresent()) {
2110                     final var verifiedMessage = syncMessage.getVerified().get();
2111                     account.getIdentityKeyStore()
2112                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2113                                     verifiedMessage.getIdentityKey(),
2114                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2115                 }
2116                 if (syncMessage.getStickerPackOperations().isPresent()) {
2117                     final var stickerPackOperationMessages = syncMessage.getStickerPackOperations().get();
2118                     for (var m : stickerPackOperationMessages) {
2119                         if (!m.getPackId().isPresent()) {
2120                             continue;
2121                         }
2122                         final var stickerPackId = StickerPackId.deserialize(m.getPackId().get());
2123                         var sticker = account.getStickerStore().getSticker(stickerPackId);
2124                         if (sticker == null) {
2125                             if (!m.getPackKey().isPresent()) {
2126                                 continue;
2127                             }
2128                             sticker = new Sticker(stickerPackId, m.getPackKey().get());
2129                         }
2130                         sticker.setInstalled(!m.getType().isPresent()
2131                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2132                         account.getStickerStore().updateSticker(sticker);
2133                     }
2134                 }
2135                 if (syncMessage.getFetchType().isPresent()) {
2136                     switch (syncMessage.getFetchType().get()) {
2137                         case LOCAL_PROFILE:
2138                             getRecipientProfile(account.getSelfRecipientId(), true);
2139                         case STORAGE_MANIFEST:
2140                             // TODO
2141                     }
2142                 }
2143                 if (syncMessage.getKeys().isPresent()) {
2144                     final var keysMessage = syncMessage.getKeys().get();
2145                     if (keysMessage.getStorageService().isPresent()) {
2146                         final var storageKey = keysMessage.getStorageService().get();
2147                         account.setStorageKey(storageKey);
2148                     }
2149                 }
2150                 if (syncMessage.getConfiguration().isPresent()) {
2151                     // TODO
2152                 }
2153             }
2154         }
2155         return actions;
2156     }
2157
2158     private void downloadContactAvatar(SignalServiceAttachment avatar, SignalServiceAddress address) {
2159         try {
2160             avatarStore.storeContactAvatar(address, outputStream -> retrieveAttachment(avatar, outputStream));
2161         } catch (IOException e) {
2162             logger.warn("Failed to download avatar for contact {}, ignoring: {}", address, e.getMessage());
2163         }
2164     }
2165
2166     private void downloadGroupAvatar(SignalServiceAttachment avatar, GroupId groupId) {
2167         try {
2168             avatarStore.storeGroupAvatar(groupId, outputStream -> retrieveAttachment(avatar, outputStream));
2169         } catch (IOException e) {
2170             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2171         }
2172     }
2173
2174     private void downloadGroupAvatar(GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey) {
2175         try {
2176             avatarStore.storeGroupAvatar(groupId,
2177                     outputStream -> retrieveGroupV2Avatar(groupSecretParams, cdnKey, outputStream));
2178         } catch (IOException e) {
2179             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2180         }
2181     }
2182
2183     private void downloadProfileAvatar(
2184             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2185     ) {
2186         try {
2187             avatarStore.storeProfileAvatar(address,
2188                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
2189         } catch (Throwable e) {
2190             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
2191         }
2192     }
2193
2194     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2195         return attachmentStore.getAttachmentFile(attachmentId);
2196     }
2197
2198     private void downloadAttachment(final SignalServiceAttachment attachment) {
2199         if (!attachment.isPointer()) {
2200             logger.warn("Invalid state, can't store an attachment stream.");
2201         }
2202
2203         var pointer = attachment.asPointer();
2204         if (pointer.getPreview().isPresent()) {
2205             final var preview = pointer.getPreview().get();
2206             try {
2207                 attachmentStore.storeAttachmentPreview(pointer.getRemoteId(),
2208                         outputStream -> outputStream.write(preview, 0, preview.length));
2209             } catch (IOException e) {
2210                 logger.warn("Failed to download attachment preview, ignoring: {}", e.getMessage());
2211             }
2212         }
2213
2214         try {
2215             attachmentStore.storeAttachment(pointer.getRemoteId(),
2216                     outputStream -> retrieveAttachmentPointer(pointer, outputStream));
2217         } catch (IOException e) {
2218             logger.warn("Failed to download attachment ({}), ignoring: {}", pointer.getRemoteId(), e.getMessage());
2219         }
2220     }
2221
2222     private void retrieveGroupV2Avatar(
2223             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
2224     ) throws IOException {
2225         var groupOperations = groupsV2Operations.forGroup(groupSecretParams);
2226
2227         var tmpFile = IOUtils.createTempFile();
2228         try (InputStream input = messageReceiver.retrieveGroupsV2ProfileAvatar(cdnKey,
2229                 tmpFile,
2230                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2231             var encryptedData = IOUtils.readFully(input);
2232
2233             var decryptedData = groupOperations.decryptAvatar(encryptedData);
2234             outputStream.write(decryptedData);
2235         } finally {
2236             try {
2237                 Files.delete(tmpFile.toPath());
2238             } catch (IOException e) {
2239                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2240                         tmpFile,
2241                         e.getMessage());
2242             }
2243         }
2244     }
2245
2246     private void retrieveProfileAvatar(
2247             String avatarPath, ProfileKey profileKey, OutputStream outputStream
2248     ) throws IOException {
2249         var tmpFile = IOUtils.createTempFile();
2250         try (var input = messageReceiver.retrieveProfileAvatar(avatarPath,
2251                 tmpFile,
2252                 profileKey,
2253                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2254             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2255             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2256         } finally {
2257             try {
2258                 Files.delete(tmpFile.toPath());
2259             } catch (IOException e) {
2260                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2261                         tmpFile,
2262                         e.getMessage());
2263             }
2264         }
2265     }
2266
2267     private void retrieveAttachment(
2268             final SignalServiceAttachment attachment, final OutputStream outputStream
2269     ) throws IOException {
2270         if (attachment.isPointer()) {
2271             var pointer = attachment.asPointer();
2272             retrieveAttachmentPointer(pointer, outputStream);
2273         } else {
2274             var stream = attachment.asStream();
2275             IOUtils.copyStream(stream.getInputStream(), outputStream);
2276         }
2277     }
2278
2279     private void retrieveAttachmentPointer(
2280             SignalServiceAttachmentPointer pointer, OutputStream outputStream
2281     ) throws IOException {
2282         var tmpFile = IOUtils.createTempFile();
2283         try (var input = retrieveAttachmentAsStream(pointer, tmpFile)) {
2284             IOUtils.copyStream(input, outputStream);
2285         } catch (MissingConfigurationException | InvalidMessageException e) {
2286             throw new IOException(e);
2287         } finally {
2288             try {
2289                 Files.delete(tmpFile.toPath());
2290             } catch (IOException e) {
2291                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2292                         tmpFile,
2293                         e.getMessage());
2294             }
2295         }
2296     }
2297
2298     private InputStream retrieveAttachmentAsStream(
2299             SignalServiceAttachmentPointer pointer, File tmpFile
2300     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2301         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2302     }
2303
2304     void sendGroups() throws IOException, UntrustedIdentityException {
2305         var groupsFile = IOUtils.createTempFile();
2306
2307         try {
2308             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2309                 var out = new DeviceGroupsOutputStream(fos);
2310                 for (var record : getGroups()) {
2311                     if (record instanceof GroupInfoV1) {
2312                         var groupInfo = (GroupInfoV1) record;
2313                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2314                                 Optional.fromNullable(groupInfo.name),
2315                                 groupInfo.getMembers()
2316                                         .stream()
2317                                         .map(this::resolveSignalServiceAddress)
2318                                         .collect(Collectors.toList()),
2319                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2320                                 groupInfo.isMember(account.getSelfRecipientId()),
2321                                 Optional.of(groupInfo.messageExpirationTime),
2322                                 Optional.fromNullable(groupInfo.color),
2323                                 groupInfo.blocked,
2324                                 Optional.absent(),
2325                                 groupInfo.archived));
2326                     }
2327                 }
2328             }
2329
2330             if (groupsFile.exists() && groupsFile.length() > 0) {
2331                 try (var groupsFileStream = new FileInputStream(groupsFile)) {
2332                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2333                             .withStream(groupsFileStream)
2334                             .withContentType("application/octet-stream")
2335                             .withLength(groupsFile.length())
2336                             .build();
2337
2338                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2339                 }
2340             }
2341         } finally {
2342             try {
2343                 Files.delete(groupsFile.toPath());
2344             } catch (IOException e) {
2345                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2346             }
2347         }
2348     }
2349
2350     public void sendContacts() throws IOException, UntrustedIdentityException {
2351         var contactsFile = IOUtils.createTempFile();
2352
2353         try {
2354             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2355                 var out = new DeviceContactsOutputStream(fos);
2356                 for (var contactPair : account.getContactStore().getContacts()) {
2357                     final var recipientId = contactPair.first();
2358                     final var contact = contactPair.second();
2359                     final var address = resolveSignalServiceAddress(recipientId);
2360
2361                     var currentIdentity = account.getIdentityKeyStore().getIdentity(recipientId);
2362                     VerifiedMessage verifiedMessage = null;
2363                     if (currentIdentity != null) {
2364                         verifiedMessage = new VerifiedMessage(address,
2365                                 currentIdentity.getIdentityKey(),
2366                                 currentIdentity.getTrustLevel().toVerifiedState(),
2367                                 currentIdentity.getDateAdded().getTime());
2368                     }
2369
2370                     var profileKey = account.getProfileStore().getProfileKey(recipientId);
2371                     out.write(new DeviceContact(address,
2372                             Optional.fromNullable(contact.getName()),
2373                             createContactAvatarAttachment(address),
2374                             Optional.fromNullable(contact.getColor()),
2375                             Optional.fromNullable(verifiedMessage),
2376                             Optional.fromNullable(profileKey),
2377                             contact.isBlocked(),
2378                             Optional.of(contact.getMessageExpirationTime()),
2379                             Optional.absent(),
2380                             contact.isArchived()));
2381                 }
2382
2383                 if (account.getProfileKey() != null) {
2384                     // Send our own profile key as well
2385                     out.write(new DeviceContact(account.getSelfAddress(),
2386                             Optional.absent(),
2387                             Optional.absent(),
2388                             Optional.absent(),
2389                             Optional.absent(),
2390                             Optional.of(account.getProfileKey()),
2391                             false,
2392                             Optional.absent(),
2393                             Optional.absent(),
2394                             false));
2395                 }
2396             }
2397
2398             if (contactsFile.exists() && contactsFile.length() > 0) {
2399                 try (var contactsFileStream = new FileInputStream(contactsFile)) {
2400                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2401                             .withStream(contactsFileStream)
2402                             .withContentType("application/octet-stream")
2403                             .withLength(contactsFile.length())
2404                             .build();
2405
2406                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2407                 }
2408             }
2409         } finally {
2410             try {
2411                 Files.delete(contactsFile.toPath());
2412             } catch (IOException e) {
2413                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2414             }
2415         }
2416     }
2417
2418     void sendBlockedList() throws IOException, UntrustedIdentityException {
2419         var addresses = new ArrayList<SignalServiceAddress>();
2420         for (var record : account.getContactStore().getContacts()) {
2421             if (record.second().isBlocked()) {
2422                 addresses.add(resolveSignalServiceAddress(record.first()));
2423             }
2424         }
2425         var groupIds = new ArrayList<byte[]>();
2426         for (var record : getGroups()) {
2427             if (record.isBlocked()) {
2428                 groupIds.add(record.getGroupId().serialize());
2429             }
2430         }
2431         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2432     }
2433
2434     private void sendVerifiedMessage(
2435             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2436     ) throws IOException, UntrustedIdentityException {
2437         var verifiedMessage = new VerifiedMessage(destination,
2438                 identityKey,
2439                 trustLevel.toVerifiedState(),
2440                 System.currentTimeMillis());
2441         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2442     }
2443
2444     public List<Pair<RecipientId, Contact>> getContacts() {
2445         return account.getContactStore().getContacts();
2446     }
2447
2448     public String getContactOrProfileName(String number) throws InvalidNumberException {
2449         final var recipientId = canonicalizeAndResolveRecipient(number);
2450         final var recipient = account.getRecipientStore().getRecipient(recipientId);
2451         if (recipient == null) {
2452             return null;
2453         }
2454
2455         if (recipient.getContact() != null && !Util.isEmpty(recipient.getContact().getName())) {
2456             return recipient.getContact().getName();
2457         }
2458
2459         if (recipient.getProfile() != null && recipient.getProfile() != null) {
2460             return recipient.getProfile().getDisplayName();
2461         }
2462
2463         return null;
2464     }
2465
2466     public GroupInfo getGroup(GroupId groupId) {
2467         final var group = account.getGroupStore().getGroup(groupId);
2468         if (group instanceof GroupInfoV2 && ((GroupInfoV2) group).getGroup() == null) {
2469             final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(((GroupInfoV2) group).getMasterKey());
2470             ((GroupInfoV2) group).setGroup(groupHelper.getDecryptedGroup(groupSecretParams), this::resolveRecipient);
2471             account.getGroupStore().updateGroup(group);
2472         }
2473         return group;
2474     }
2475
2476     public List<IdentityInfo> getIdentities() {
2477         return account.getIdentityKeyStore().getIdentities();
2478     }
2479
2480     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2481         final var identity = account.getIdentityKeyStore().getIdentity(canonicalizeAndResolveRecipient(number));
2482         return identity == null ? List.of() : List.of(identity);
2483     }
2484
2485     /**
2486      * Trust this the identity with this fingerprint
2487      *
2488      * @param name        username of the identity
2489      * @param fingerprint Fingerprint
2490      */
2491     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2492         var recipientId = canonicalizeAndResolveRecipient(name);
2493         return trustIdentity(recipientId,
2494                 identityKey -> Arrays.equals(identityKey.serialize(), fingerprint),
2495                 TrustLevel.TRUSTED_VERIFIED);
2496     }
2497
2498     /**
2499      * Trust this the identity with this safety number
2500      *
2501      * @param name         username of the identity
2502      * @param safetyNumber Safety number
2503      */
2504     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2505         var recipientId = canonicalizeAndResolveRecipient(name);
2506         var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2507         return trustIdentity(recipientId,
2508                 identityKey -> safetyNumber.equals(computeSafetyNumber(address, identityKey)),
2509                 TrustLevel.TRUSTED_VERIFIED);
2510     }
2511
2512     /**
2513      * Trust all keys of this identity without verification
2514      *
2515      * @param name username of the identity
2516      */
2517     public boolean trustIdentityAllKeys(String name) throws InvalidNumberException {
2518         var recipientId = canonicalizeAndResolveRecipient(name);
2519         return trustIdentity(recipientId, identityKey -> true, TrustLevel.TRUSTED_UNVERIFIED);
2520     }
2521
2522     private boolean trustIdentity(
2523             RecipientId recipientId, Function<IdentityKey, Boolean> verifier, TrustLevel trustLevel
2524     ) {
2525         var identity = account.getIdentityKeyStore().getIdentity(recipientId);
2526         if (identity == null) {
2527             return false;
2528         }
2529
2530         if (!verifier.apply(identity.getIdentityKey())) {
2531             return false;
2532         }
2533
2534         account.getIdentityKeyStore().setIdentityTrustLevel(recipientId, identity.getIdentityKey(), trustLevel);
2535         try {
2536             var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2537             sendVerifiedMessage(address, identity.getIdentityKey(), trustLevel);
2538         } catch (IOException | UntrustedIdentityException e) {
2539             logger.warn("Failed to send verification sync message: {}", e.getMessage());
2540         }
2541
2542         return true;
2543     }
2544
2545     public String computeSafetyNumber(
2546             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2547     ) {
2548         return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
2549                 account.getSelfAddress(),
2550                 getIdentityKeyPair().getPublicKey(),
2551                 theirAddress,
2552                 theirIdentityKey);
2553     }
2554
2555     @Deprecated
2556     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2557         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2558
2559         return resolveSignalServiceAddress(address);
2560     }
2561
2562     @Deprecated
2563     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2564         if (address.matches(account.getSelfAddress())) {
2565             return account.getSelfAddress();
2566         }
2567
2568         return account.getRecipientStore().resolveServiceAddress(address);
2569     }
2570
2571     public SignalServiceAddress resolveSignalServiceAddress(RecipientId recipientId) {
2572         return account.getRecipientStore().resolveServiceAddress(recipientId);
2573     }
2574
2575     public RecipientId canonicalizeAndResolveRecipient(String identifier) throws InvalidNumberException {
2576         var canonicalizedNumber = UuidUtil.isUuid(identifier)
2577                 ? identifier
2578                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2579
2580         return resolveRecipient(canonicalizedNumber);
2581     }
2582
2583     private RecipientId resolveRecipient(final String identifier) {
2584         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2585
2586         return resolveRecipient(address);
2587     }
2588
2589     public RecipientId resolveRecipient(SignalServiceAddress address) {
2590         return account.getRecipientStore().resolveRecipient(address);
2591     }
2592
2593     private RecipientId resolveRecipientTrusted(SignalServiceAddress address) {
2594         return account.getRecipientStore().resolveRecipientTrusted(address);
2595     }
2596
2597     @Override
2598     public void close() throws IOException {
2599         close(true);
2600     }
2601
2602     void close(boolean closeAccount) throws IOException {
2603         executor.shutdown();
2604
2605         if (messagePipe != null) {
2606             messagePipe.shutdown();
2607             messagePipe = null;
2608         }
2609
2610         if (unidentifiedMessagePipe != null) {
2611             unidentifiedMessagePipe.shutdown();
2612             unidentifiedMessagePipe = null;
2613         }
2614
2615         if (closeAccount && account != null) {
2616             account.close();
2617         }
2618         account = null;
2619     }
2620
2621     public interface ReceiveMessageHandler {
2622
2623         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2624     }
2625 }