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