nmode's Git Repositories - signal-cli/blob - lib/src/main/java/org/asamk/signal/manager/Manager.java

   1 /*
   2   Copyright (C) 2015-2021 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import org.asamk.signal.manager.config.ServiceConfig;
  20 import org.asamk.signal.manager.config.ServiceEnvironment;
  21 import org.asamk.signal.manager.config.ServiceEnvironmentConfig;
  22 import org.asamk.signal.manager.groups.GroupId;
  23 import org.asamk.signal.manager.groups.GroupIdV1;
  24 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  25 import org.asamk.signal.manager.groups.GroupNotFoundException;
  26 import org.asamk.signal.manager.groups.GroupUtils;
  27 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  28 import org.asamk.signal.manager.helper.GroupHelper;
  29 import org.asamk.signal.manager.helper.PinHelper;
  30 import org.asamk.signal.manager.helper.ProfileHelper;
  31 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  32 import org.asamk.signal.manager.storage.SignalAccount;
  33 import org.asamk.signal.manager.storage.groups.GroupInfo;
  34 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  35 import org.asamk.signal.manager.storage.groups.GroupInfoV2;
  36 import org.asamk.signal.manager.storage.identities.IdentityInfo;
  37 import org.asamk.signal.manager.storage.messageCache.CachedMessage;
  38 import org.asamk.signal.manager.storage.recipients.Contact;
  39 import org.asamk.signal.manager.storage.recipients.Profile;
  40 import org.asamk.signal.manager.storage.recipients.RecipientId;
  41 import org.asamk.signal.manager.storage.stickers.Sticker;
  42 import org.asamk.signal.manager.storage.stickers.StickerPackId;
  43 import org.asamk.signal.manager.util.AttachmentUtils;
  44 import org.asamk.signal.manager.util.IOUtils;
  45 import org.asamk.signal.manager.util.KeyUtils;
  46 import org.asamk.signal.manager.util.ProfileUtils;
  47 import org.asamk.signal.manager.util.StickerUtils;
  48 import org.asamk.signal.manager.util.Utils;
  49 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  50 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  51 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  52 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  53 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  54 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  55 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  56 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  57 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  58 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  59 import org.signal.libsignal.metadata.SelfSendException;
  60 import org.signal.libsignal.metadata.certificate.CertificateValidator;
  61 import org.signal.storageservice.protos.groups.GroupChange;
  62 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
  63 import org.signal.zkgroup.InvalidInputException;
  64 import org.signal.zkgroup.VerificationFailedException;
  65 import org.signal.zkgroup.groups.GroupMasterKey;
  66 import org.signal.zkgroup.groups.GroupSecretParams;
  67 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  68 import org.signal.zkgroup.profiles.ProfileKey;
  69 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  70 import org.slf4j.Logger;
  71 import org.slf4j.LoggerFactory;
  72 import org.whispersystems.libsignal.IdentityKey;
  73 import org.whispersystems.libsignal.IdentityKeyPair;
  74 import org.whispersystems.libsignal.InvalidKeyException;
  75 import org.whispersystems.libsignal.InvalidMessageException;
  76 import org.whispersystems.libsignal.ecc.ECPublicKey;
  77 import org.whispersystems.libsignal.state.PreKeyRecord;
  78 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  79 import org.whispersystems.libsignal.util.Pair;
  80 import org.whispersystems.libsignal.util.guava.Optional;
  81 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  82 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  83 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  84 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  85 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  86 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  87 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  88 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  89 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
  90 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  91 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  92 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  93 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  94 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  95 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  96 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  97 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  98 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  99 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
 100 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
 101 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
 102 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
 103 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
 104 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 105 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 106 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 107 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 108 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 109 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 110 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 111 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 112 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 113 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 114 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 115 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 116 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 117 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 118 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 119 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 120 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 121 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 122 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 123 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
 124 import org.whispersystems.signalservice.api.util.SleepTimer;
 125 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 126 import org.whispersystems.signalservice.api.util.UuidUtil;
 127 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 128 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 129 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 130 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 131 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 132 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 133 import org.whispersystems.signalservice.internal.util.Hex;
 134 import org.whispersystems.signalservice.internal.util.Util;
 135
 136 import java.io.Closeable;
 137 import java.io.File;
 138 import java.io.FileInputStream;
 139 import java.io.FileOutputStream;
 140 import java.io.IOException;
 141 import java.io.InputStream;
 142 import java.io.OutputStream;
 143 import java.net.URI;
 144 import java.net.URISyntaxException;
 145 import java.net.URLEncoder;
 146 import java.nio.charset.StandardCharsets;
 147 import java.nio.file.Files;
 148 import java.security.SignatureException;
 149 import java.util.ArrayList;
 150 import java.util.Arrays;
 151 import java.util.Base64;
 152 import java.util.Collection;
 153 import java.util.Date;
 154 import java.util.HashSet;
 155 import java.util.List;
 156 import java.util.Map;
 157 import java.util.Set;
 158 import java.util.UUID;
 159 import java.util.concurrent.ExecutorService;
 160 import java.util.concurrent.Executors;
 161 import java.util.concurrent.TimeUnit;
 162 import java.util.concurrent.TimeoutException;
 163 import java.util.function.Function;
 164 import java.util.stream.Collectors;
 165
 166 import static org.asamk.signal.manager.config.ServiceConfig.capabilities;
 167
 168 public class Manager implements Closeable {
 169
 170     private final static Logger logger = LoggerFactory.getLogger(Manager.class);
 171
 172     private final CertificateValidator certificateValidator;
 173
 174     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
 175     private final String userAgent;
 176
 177     private SignalAccount account;
 178     private final SignalServiceAccountManager accountManager;
 179     private final GroupsV2Api groupsV2Api;
 180     private final GroupsV2Operations groupsV2Operations;
 181     private final SignalServiceMessageReceiver messageReceiver;
 182     private final ClientZkProfileOperations clientZkProfileOperations;
 183
 184     private final ExecutorService executor = Executors.newCachedThreadPool();
 185
 186     private SignalServiceMessagePipe messagePipe = null;
 187     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 188
 189     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 190     private final ProfileHelper profileHelper;
 191     private final GroupHelper groupHelper;
 192     private final PinHelper pinHelper;
 193     private final AvatarStore avatarStore;
 194     private final AttachmentStore attachmentStore;
 195
 196     Manager(
 197             SignalAccount account,
 198             PathConfig pathConfig,
 199             ServiceEnvironmentConfig serviceEnvironmentConfig,
 200             String userAgent
 201     ) {
 202         this.account = account;
 203         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 204         this.certificateValidator = new CertificateValidator(serviceEnvironmentConfig.getUnidentifiedSenderTrustRoot());
 205         this.userAgent = userAgent;
 206         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 207                 serviceEnvironmentConfig.getSignalServiceConfiguration())) : null;
 208         final SleepTimer timer = new UptimeSleepTimer();
 209         this.accountManager = new SignalServiceAccountManager(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 210                 new DynamicCredentialsProvider(account.getUuid(),
 211                         account.getUsername(),
 212                         account.getPassword(),
 213                         account.getDeviceId()),
 214                 userAgent,
 215                 groupsV2Operations,
 216                 ServiceConfig.AUTOMATIC_NETWORK_RETRY,
 217                 timer);
 218         this.groupsV2Api = accountManager.getGroupsV2Api();
 219         final var keyBackupService = accountManager.getKeyBackupService(ServiceConfig.getIasKeyStore(),
 220                 serviceEnvironmentConfig.getKeyBackupConfig().getEnclaveName(),
 221                 serviceEnvironmentConfig.getKeyBackupConfig().getServiceId(),
 222                 serviceEnvironmentConfig.getKeyBackupConfig().getMrenclave(),
 223                 10);
 224
 225         this.pinHelper = new PinHelper(keyBackupService);
 226         this.clientZkProfileOperations = capabilities.isGv2()
 227                 ? ClientZkOperations.create(serviceEnvironmentConfig.getSignalServiceConfiguration())
 228                 .getProfileOperations()
 229                 : null;
 230         this.messageReceiver = new SignalServiceMessageReceiver(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 231                 account.getUuid(),
 232                 account.getUsername(),
 233                 account.getPassword(),
 234                 account.getDeviceId(),
 235                 userAgent,
 236                 null,
 237                 timer,
 238                 clientZkProfileOperations,
 239                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 240
 241         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 242                 account.getProfileStore()::getProfileKey,
 243                 this::getRecipientProfile,
 244                 this::getSenderCertificate);
 245         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 246                 unidentifiedAccessHelper::getAccessFor,
 247                 unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
 248                 () -> messageReceiver,
 249                 this::resolveSignalServiceAddress);
 250         this.groupHelper = new GroupHelper(this::getRecipientProfileKeyCredential,
 251                 this::getRecipientProfile,
 252                 account::getSelfRecipientId,
 253                 groupsV2Operations,
 254                 groupsV2Api,
 255                 this::getGroupAuthForToday,
 256                 this::resolveSignalServiceAddress);
 257         this.avatarStore = new AvatarStore(pathConfig.getAvatarsPath());
 258         this.attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
 259     }
 260
 261     public String getUsername() {
 262         return account.getUsername();
 263     }
 264
 265     public SignalServiceAddress getSelfAddress() {
 266         return account.getSelfAddress();
 267     }
 268
 269     public RecipientId getSelfRecipientId() {
 270         return account.getSelfRecipientId();
 271     }
 272
 273     private IdentityKeyPair getIdentityKeyPair() {
 274         return account.getIdentityKeyPair();
 275     }
 276
 277     public int getDeviceId() {
 278         return account.getDeviceId();
 279     }
 280
 281     public static Manager init(
 282             String username, File settingsPath, ServiceEnvironment serviceEnvironment, String userAgent
 283     ) throws IOException, NotRegisteredException {
 284         var pathConfig = PathConfig.createDefault(settingsPath);
 285
 286         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 287             throw new NotRegisteredException();
 288         }
 289
 290         var account = SignalAccount.load(pathConfig.getDataPath(), username);
 291
 292         if (!account.isRegistered()) {
 293             throw new NotRegisteredException();
 294         }
 295
 296         final var serviceEnvironmentConfig = ServiceConfig.getServiceEnvironmentConfig(serviceEnvironment, userAgent);
 297
 298         return new Manager(account, pathConfig, serviceEnvironmentConfig, userAgent);
 299     }
 300
 301     public static List<String> getAllLocalUsernames(File settingsPath) {
 302         var pathConfig = PathConfig.createDefault(settingsPath);
 303         final var dataPath = pathConfig.getDataPath();
 304         final var files = dataPath.listFiles();
 305
 306         if (files == null) {
 307             return List.of();
 308         }
 309
 310         return Arrays.stream(files)
 311                 .filter(File::isFile)
 312                 .map(File::getName)
 313                 .filter(file -> PhoneNumberFormatter.isValidNumber(file, null))
 314                 .collect(Collectors.toList());
 315     }
 316
 317     public void checkAccountState() throws IOException {
 318         if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 319             refreshPreKeys();
 320         }
 321         if (account.getUuid() == null) {
 322             account.setUuid(accountManager.getOwnUuid());
 323         }
 324         updateAccountAttributes();
 325     }
 326
 327     /**
 328      * This is used for checking a set of phone numbers for registration on Signal
 329      *
 330      * @param numbers The set of phone number in question
 331      * @return A map of numbers to booleans. True if registered, false otherwise. Should never be null
 332      * @throws IOException if its unable to get the contacts to check if they're registered
 333      */
 334     public Map<String, Boolean> areUsersRegistered(Set<String> numbers) throws IOException {
 335         // Note "contactDetails" has no optionals. It only gives us info on users who are registered
 336         var contactDetails = getRegisteredUsers(numbers);
 337
 338         var registeredUsers = contactDetails.keySet();
 339
 340         return numbers.stream().collect(Collectors.toMap(x -> x, registeredUsers::contains));
 341     }
 342
 343     public void updateAccountAttributes() throws IOException {
 344         accountManager.setAccountAttributes(null,
 345                 account.getLocalRegistrationId(),
 346                 true,
 347                 // set legacy pin only if no KBS master key is set
 348                 account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
 349                 account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 350                 account.getSelfUnidentifiedAccessKey(),
 351                 account.isUnrestrictedUnidentifiedAccess(),
 352                 capabilities,
 353                 account.isDiscoverableByPhoneNumber());
 354     }
 355
 356     /**
 357      * @param name       if null, the previous name will be kept
 358      * @param about      if null, the previous about text will be kept
 359      * @param aboutEmoji if null, the previous about emoji will be kept
 360      * @param avatar     if avatar is null the image from the local avatar store is used (if present),
 361      *                   if it's Optional.absent(), the avatar will be removed
 362      */
 363     public void setProfile(String name, String about, String aboutEmoji, Optional<File> avatar) throws IOException {
 364         var profile = getRecipientProfile(account.getSelfRecipientId());
 365         var builder = profile == null ? Profile.newBuilder() : Profile.newBuilder(profile);
 366         if (name != null) {
 367             builder.withGivenName(name);
 368             builder.withFamilyName(null);
 369         }
 370         if (about != null) {
 371             builder.withAbout(about);
 372         }
 373         if (aboutEmoji != null) {
 374             builder.withAboutEmoji(aboutEmoji);
 375         }
 376         var newProfile = builder.build();
 377
 378         try (final var streamDetails = avatar == null
 379                 ? avatarStore.retrieveProfileAvatar(getSelfAddress())
 380                 : avatar.isPresent() ? Utils.createStreamDetailsFromFile(avatar.get()) : null) {
 381             accountManager.setVersionedProfile(account.getUuid(),
 382                     account.getProfileKey(),
 383                     newProfile.getInternalServiceName(),
 384                     newProfile.getAbout() == null ? "" : newProfile.getAbout(),
 385                     newProfile.getAboutEmoji() == null ? "" : newProfile.getAboutEmoji(),
 386                     streamDetails);
 387         }
 388
 389         if (avatar != null) {
 390             if (avatar.isPresent()) {
 391                 avatarStore.storeProfileAvatar(getSelfAddress(),
 392                         outputStream -> IOUtils.copyFileToStream(avatar.get(), outputStream));
 393             } else {
 394                 avatarStore.deleteProfileAvatar(getSelfAddress());
 395             }
 396         }
 397         account.getProfileStore().storeProfile(account.getSelfRecipientId(), newProfile);
 398
 399         try {
 400             sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
 401         } catch (UntrustedIdentityException ignored) {
 402         }
 403     }
 404
 405     public void unregister() throws IOException {
 406         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 407         // If this is the master device, other users can't send messages to this number anymore.
 408         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 409         accountManager.setGcmId(Optional.absent());
 410
 411         account.setRegistered(false);
 412     }
 413
 414     public void deleteAccount() throws IOException {
 415         accountManager.deleteAccount();
 416
 417         account.setRegistered(false);
 418     }
 419
 420     public List<DeviceInfo> getLinkedDevices() throws IOException {
 421         var devices = accountManager.getDevices();
 422         account.setMultiDevice(devices.size() > 1);
 423         return devices;
 424     }
 425
 426     public void removeLinkedDevices(int deviceId) throws IOException {
 427         accountManager.removeDevice(deviceId);
 428         var devices = accountManager.getDevices();
 429         account.setMultiDevice(devices.size() > 1);
 430     }
 431
 432     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 433         var info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 434
 435         addDevice(info.deviceIdentifier, info.deviceKey);
 436     }
 437
 438     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 439         var identityKeyPair = getIdentityKeyPair();
 440         var verificationCode = accountManager.getNewDeviceVerificationCode();
 441
 442         accountManager.addDevice(deviceIdentifier,
 443                 deviceKey,
 444                 identityKeyPair,
 445                 Optional.of(account.getProfileKey().serialize()),
 446                 verificationCode);
 447         account.setMultiDevice(true);
 448     }
 449
 450     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 451         if (!account.isMasterDevice()) {
 452             throw new RuntimeException("Only master device can set a PIN");
 453         }
 454         if (pin.isPresent()) {
 455             final var masterKey = account.getPinMasterKey() != null
 456                     ? account.getPinMasterKey()
 457                     : KeyUtils.createMasterKey();
 458
 459             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 460
 461             account.setRegistrationLockPin(pin.get(), masterKey);
 462         } else {
 463             // Remove legacy registration lock
 464             accountManager.removeRegistrationLockV1();
 465
 466             // Remove KBS Pin
 467             pinHelper.removeRegistrationLockPin();
 468
 469             account.setRegistrationLockPin(null, null);
 470         }
 471     }
 472
 473     void refreshPreKeys() throws IOException {
 474         var oneTimePreKeys = generatePreKeys();
 475         final var identityKeyPair = getIdentityKeyPair();
 476         var signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 477
 478         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 479     }
 480
 481     private List<PreKeyRecord> generatePreKeys() {
 482         final var offset = account.getPreKeyIdOffset();
 483
 484         var records = KeyUtils.generatePreKeyRecords(offset, ServiceConfig.PREKEY_BATCH_SIZE);
 485         account.addPreKeys(records);
 486
 487         return records;
 488     }
 489
 490     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 491         final var signedPreKeyId = account.getNextSignedPreKeyId();
 492
 493         var record = KeyUtils.generateSignedPreKeyRecord(identityKeyPair, signedPreKeyId);
 494         account.addSignedPreKey(record);
 495
 496         return record;
 497     }
 498
 499     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 500         if (messagePipe == null) {
 501             messagePipe = messageReceiver.createMessagePipe();
 502         }
 503         return messagePipe;
 504     }
 505
 506     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 507         if (unidentifiedMessagePipe == null) {
 508             unidentifiedMessagePipe = messageReceiver.createUnidentifiedMessagePipe();
 509         }
 510         return unidentifiedMessagePipe;
 511     }
 512
 513     private SignalServiceMessageSender createMessageSender() {
 514         return new SignalServiceMessageSender(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 515                 account.getUuid(),
 516                 account.getUsername(),
 517                 account.getPassword(),
 518                 account.getDeviceId(),
 519                 account.getSignalProtocolStore(),
 520                 userAgent,
 521                 account.isMultiDevice(),
 522                 Optional.fromNullable(messagePipe),
 523                 Optional.fromNullable(unidentifiedMessagePipe),
 524                 Optional.absent(),
 525                 clientZkProfileOperations,
 526                 executor,
 527                 ServiceConfig.MAX_ENVELOPE_SIZE,
 528                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 529     }
 530
 531     public Profile getRecipientProfile(
 532             SignalServiceAddress address
 533     ) {
 534         return getRecipientProfile(resolveRecipient(address), false);
 535     }
 536
 537     public Profile getRecipientProfile(
 538             RecipientId recipientId
 539     ) {
 540         return getRecipientProfile(recipientId, false);
 541     }
 542
 543     private final Set<RecipientId> pendingProfileRequest = new HashSet<>();
 544
 545     Profile getRecipientProfile(
 546             RecipientId recipientId, boolean force
 547     ) {
 548         var profileKey = account.getProfileStore().getProfileKey(recipientId);
 549         if (profileKey == null) {
 550             if (force) {
 551                 // retrieve profile to get identity key
 552                 retrieveEncryptedProfile(recipientId);
 553             }
 554             return null;
 555         }
 556         var profile = account.getProfileStore().getProfile(recipientId);
 557
 558         var now = new Date().getTime();
 559         // Profiles are cached for 24h before retrieving them again, unless forced
 560         if (!force && profile != null && now - profile.getLastUpdateTimestamp() < 24 * 60 * 60 * 1000) {
 561             return profile;
 562         }
 563
 564         synchronized (pendingProfileRequest) {
 565             if (pendingProfileRequest.contains(recipientId)) {
 566                 return profile;
 567             }
 568             pendingProfileRequest.add(recipientId);
 569         }
 570         final SignalServiceProfile encryptedProfile;
 571         try {
 572             encryptedProfile = retrieveEncryptedProfile(recipientId);
 573         } finally {
 574             synchronized (pendingProfileRequest) {
 575                 pendingProfileRequest.remove(recipientId);
 576             }
 577         }
 578         if (encryptedProfile == null) {
 579             return null;
 580         }
 581
 582         profile = decryptProfileAndDownloadAvatar(recipientId, profileKey, encryptedProfile);
 583         account.getProfileStore().storeProfile(recipientId, profile);
 584
 585         return profile;
 586     }
 587
 588     private SignalServiceProfile retrieveEncryptedProfile(RecipientId recipientId) {
 589         try {
 590             return retrieveProfileAndCredential(recipientId, SignalServiceProfile.RequestType.PROFILE).getProfile();
 591         } catch (IOException e) {
 592             logger.warn("Failed to retrieve profile, ignoring: {}", e.getMessage());
 593             return null;
 594         }
 595     }
 596
 597     private ProfileAndCredential retrieveProfileAndCredential(
 598             final RecipientId recipientId, final SignalServiceProfile.RequestType requestType
 599     ) throws IOException {
 600         final var profileAndCredential = profileHelper.retrieveProfileSync(recipientId, requestType);
 601         final var profile = profileAndCredential.getProfile();
 602
 603         try {
 604             account.getIdentityKeyStore()
 605                     .saveIdentity(recipientId,
 606                             new IdentityKey(Base64.getDecoder().decode(profile.getIdentityKey())),
 607                             new Date());
 608         } catch (InvalidKeyException ignored) {
 609             logger.warn("Got invalid identity key in profile for {}",
 610                     resolveSignalServiceAddress(recipientId).getLegacyIdentifier());
 611         }
 612         return profileAndCredential;
 613     }
 614
 615     private ProfileKeyCredential getRecipientProfileKeyCredential(RecipientId recipientId) {
 616         var profileKeyCredential = account.getProfileStore().getProfileKeyCredential(recipientId);
 617         if (profileKeyCredential != null) {
 618             return profileKeyCredential;
 619         }
 620
 621         ProfileAndCredential profileAndCredential;
 622         try {
 623             profileAndCredential = retrieveProfileAndCredential(recipientId,
 624                     SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 625         } catch (IOException e) {
 626             logger.warn("Failed to retrieve profile key credential, ignoring: {}", e.getMessage());
 627             return null;
 628         }
 629
 630         profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 631         account.getProfileStore().storeProfileKeyCredential(recipientId, profileKeyCredential);
 632
 633         var profileKey = account.getProfileStore().getProfileKey(recipientId);
 634         if (profileKey != null) {
 635             final var profile = decryptProfileAndDownloadAvatar(recipientId,
 636                     profileKey,
 637                     profileAndCredential.getProfile());
 638             account.getProfileStore().storeProfile(recipientId, profile);
 639         }
 640
 641         return profileKeyCredential;
 642     }
 643
 644     private Profile decryptProfileAndDownloadAvatar(
 645             final RecipientId recipientId, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 646     ) {
 647         if (encryptedProfile.getAvatar() != null) {
 648             downloadProfileAvatar(resolveSignalServiceAddress(recipientId), encryptedProfile.getAvatar(), profileKey);
 649         }
 650
 651         return ProfileUtils.decryptProfile(profileKey, encryptedProfile);
 652     }
 653
 654     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(GroupId groupId) throws IOException {
 655         final var streamDetails = avatarStore.retrieveGroupAvatar(groupId);
 656         if (streamDetails == null) {
 657             return Optional.absent();
 658         }
 659
 660         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 661     }
 662
 663     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(SignalServiceAddress address) throws IOException {
 664         final var streamDetails = avatarStore.retrieveContactAvatar(address);
 665         if (streamDetails == null) {
 666             return Optional.absent();
 667         }
 668
 669         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 670     }
 671
 672     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 673         var g = getGroup(groupId);
 674         if (g == null) {
 675             throw new GroupNotFoundException(groupId);
 676         }
 677         if (!g.isMember(account.getSelfRecipientId())) {
 678             throw new NotAGroupMemberException(groupId, g.getTitle());
 679         }
 680         return g;
 681     }
 682
 683     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 684         var g = getGroup(groupId);
 685         if (g == null) {
 686             throw new GroupNotFoundException(groupId);
 687         }
 688         if (!g.isMember(account.getSelfRecipientId()) && !g.isPendingMember(account.getSelfRecipientId())) {
 689             throw new NotAGroupMemberException(groupId, g.getTitle());
 690         }
 691         return g;
 692     }
 693
 694     public List<GroupInfo> getGroups() {
 695         return account.getGroupStore().getGroups();
 696     }
 697
 698     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 699             String messageText, List<String> attachments, GroupId groupId
 700     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 701         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 702         if (attachments != null) {
 703             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 704         }
 705
 706         return sendGroupMessage(messageBuilder, groupId);
 707     }
 708
 709     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 710             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, GroupId groupId
 711     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 712         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 713                 remove,
 714                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 715                 targetSentTimestamp);
 716         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
 717
 718         return sendGroupMessage(messageBuilder, groupId);
 719     }
 720
 721     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 722             SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
 723     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 724         final var g = getGroupForSending(groupId);
 725
 726         GroupUtils.setGroupContext(messageBuilder, g);
 727         messageBuilder.withExpiration(g.getMessageExpirationTime());
 728
 729         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfRecipientId()));
 730     }
 731
 732     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(GroupId groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 733         SignalServiceDataMessage.Builder messageBuilder;
 734
 735         final var g = getGroupForUpdating(groupId);
 736         if (g instanceof GroupInfoV1) {
 737             var groupInfoV1 = (GroupInfoV1) g;
 738             var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT).withId(groupId.serialize()).build();
 739             messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 740             groupInfoV1.removeMember(account.getSelfRecipientId());
 741             account.getGroupStore().updateGroup(groupInfoV1);
 742         } else {
 743             final var groupInfoV2 = (GroupInfoV2) g;
 744             final var groupGroupChangePair = groupHelper.leaveGroup(groupInfoV2);
 745             groupInfoV2.setGroup(groupGroupChangePair.first(), this::resolveRecipient);
 746             messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 747             account.getGroupStore().updateGroup(groupInfoV2);
 748         }
 749
 750         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfRecipientId()));
 751     }
 752
 753     public Pair<GroupId, List<SendMessageResult>> updateGroup(
 754             GroupId groupId, String name, List<String> members, File avatarFile
 755     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 756         return sendUpdateGroupMessage(groupId,
 757                 name,
 758                 members == null ? null : getSignalServiceAddresses(members),
 759                 avatarFile);
 760     }
 761
 762     private Pair<GroupId, List<SendMessageResult>> sendUpdateGroupMessage(
 763             GroupId groupId, String name, Set<RecipientId> members, File avatarFile
 764     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 765         GroupInfo g;
 766         SignalServiceDataMessage.Builder messageBuilder;
 767         if (groupId == null) {
 768             // Create new group
 769             var gv2Pair = groupHelper.createGroupV2(name == null ? "" : name,
 770                     members == null ? Set.of() : members,
 771                     avatarFile);
 772             if (gv2Pair == null) {
 773                 var gv1 = new GroupInfoV1(GroupIdV1.createRandom());
 774                 gv1.addMembers(List.of(account.getSelfRecipientId()));
 775                 updateGroupV1(gv1, name, members, avatarFile);
 776                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 777                 g = gv1;
 778             } else {
 779                 final var gv2 = gv2Pair.first();
 780                 final var decryptedGroup = gv2Pair.second();
 781
 782                 gv2.setGroup(decryptedGroup, this::resolveRecipient);
 783                 if (avatarFile != null) {
 784                     avatarStore.storeGroupAvatar(gv2.getGroupId(),
 785                             outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 786                 }
 787                 messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 788                 g = gv2;
 789             }
 790         } else {
 791             var group = getGroupForUpdating(groupId);
 792             if (group instanceof GroupInfoV2) {
 793                 final var groupInfoV2 = (GroupInfoV2) group;
 794
 795                 Pair<Long, List<SendMessageResult>> result = null;
 796                 if (groupInfoV2.isPendingMember(account.getSelfRecipientId())) {
 797                     var groupGroupChangePair = groupHelper.acceptInvite(groupInfoV2);
 798                     result = sendUpdateGroupMessage(groupInfoV2,
 799                             groupGroupChangePair.first(),
 800                             groupGroupChangePair.second());
 801                 }
 802
 803                 if (members != null) {
 804                     final var newMembers = new HashSet<>(members);
 805                     newMembers.removeAll(group.getMembers());
 806                     if (newMembers.size() > 0) {
 807                         var groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2, newMembers);
 808                         result = sendUpdateGroupMessage(groupInfoV2,
 809                                 groupGroupChangePair.first(),
 810                                 groupGroupChangePair.second());
 811                     }
 812                 }
 813                 if (result == null || name != null || avatarFile != null) {
 814                     var groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2, name, avatarFile);
 815                     if (avatarFile != null) {
 816                         avatarStore.storeGroupAvatar(groupInfoV2.getGroupId(),
 817                                 outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 818                     }
 819                     result = sendUpdateGroupMessage(groupInfoV2,
 820                             groupGroupChangePair.first(),
 821                             groupGroupChangePair.second());
 822                 }
 823
 824                 return new Pair<>(group.getGroupId(), result.second());
 825             } else {
 826                 var gv1 = (GroupInfoV1) group;
 827                 updateGroupV1(gv1, name, members, avatarFile);
 828                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 829                 g = gv1;
 830             }
 831         }
 832
 833         account.getGroupStore().updateGroup(g);
 834
 835         final var result = sendMessage(messageBuilder,
 836                 g.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 837         return new Pair<>(g.getGroupId(), result.second());
 838     }
 839
 840     private void updateGroupV1(
 841             final GroupInfoV1 g, final String name, final Collection<RecipientId> members, final File avatarFile
 842     ) throws IOException {
 843         if (name != null) {
 844             g.name = name;
 845         }
 846
 847         if (members != null) {
 848             final var newMemberAddresses = members.stream()
 849                     .filter(member -> !g.isMember(member))
 850                     .map(this::resolveSignalServiceAddress)
 851                     .collect(Collectors.toList());
 852             final var newE164Members = new HashSet<String>();
 853             for (var member : newMemberAddresses) {
 854                 if (!member.getNumber().isPresent()) {
 855                     continue;
 856                 }
 857                 newE164Members.add(member.getNumber().get());
 858             }
 859
 860             final var registeredUsers = getRegisteredUsers(newE164Members);
 861             if (registeredUsers.size() != newE164Members.size()) {
 862                 // Some of the new members are not registered on Signal
 863                 newE164Members.removeAll(registeredUsers.keySet());
 864                 throw new IOException("Failed to add members "
 865                         + String.join(", ", newE164Members)
 866                         + " to group: Not registered on Signal");
 867             }
 868
 869             g.addMembers(members);
 870         }
 871
 872         if (avatarFile != null) {
 873             avatarStore.storeGroupAvatar(g.getGroupId(),
 874                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 875         }
 876     }
 877
 878     public Pair<GroupId, List<SendMessageResult>> joinGroup(
 879             GroupInviteLinkUrl inviteLinkUrl
 880     ) throws IOException, GroupLinkNotActiveException {
 881         return sendJoinGroupMessage(inviteLinkUrl);
 882     }
 883
 884     private Pair<GroupId, List<SendMessageResult>> sendJoinGroupMessage(
 885             GroupInviteLinkUrl inviteLinkUrl
 886     ) throws IOException, GroupLinkNotActiveException {
 887         final var groupJoinInfo = groupHelper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
 888                 inviteLinkUrl.getPassword());
 889         final var groupChange = groupHelper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
 890                 inviteLinkUrl.getPassword(),
 891                 groupJoinInfo);
 892         final var group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
 893                 groupJoinInfo.getRevision() + 1,
 894                 groupChange.toByteArray());
 895
 896         if (group.getGroup() == null) {
 897             // Only requested member, can't send update to group members
 898             return new Pair<>(group.getGroupId(), List.of());
 899         }
 900
 901         final var result = sendUpdateGroupMessage(group, group.getGroup(), groupChange);
 902
 903         return new Pair<>(group.getGroupId(), result.second());
 904     }
 905
 906     private static int currentTimeDays() {
 907         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
 908     }
 909
 910     private GroupsV2AuthorizationString getGroupAuthForToday(
 911             final GroupSecretParams groupSecretParams
 912     ) throws IOException {
 913         final var today = currentTimeDays();
 914         // Returns credentials for the next 7 days
 915         final var credentials = groupsV2Api.getCredentials(today);
 916         // TODO cache credentials until they expire
 917         var authCredentialResponse = credentials.get(today);
 918         try {
 919             return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
 920                     today,
 921                     groupSecretParams,
 922                     authCredentialResponse);
 923         } catch (VerificationFailedException e) {
 924             throw new IOException(e);
 925         }
 926     }
 927
 928     private Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 929             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
 930     ) throws IOException {
 931         group.setGroup(newDecryptedGroup, this::resolveRecipient);
 932         final var messageBuilder = getGroupUpdateMessageBuilder(group, groupChange.toByteArray());
 933         account.getGroupStore().updateGroup(group);
 934         return sendMessage(messageBuilder, group.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 935     }
 936
 937     Pair<Long, List<SendMessageResult>> sendGroupInfoMessage(
 938             GroupIdV1 groupId, SignalServiceAddress recipient
 939     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 940         GroupInfoV1 g;
 941         var group = getGroupForSending(groupId);
 942         if (!(group instanceof GroupInfoV1)) {
 943             throw new RuntimeException("Received an invalid group request for a v2 group!");
 944         }
 945         g = (GroupInfoV1) group;
 946
 947         if (!g.isMember(resolveRecipient(recipient))) {
 948             throw new NotAGroupMemberException(groupId, g.name);
 949         }
 950
 951         var messageBuilder = getGroupUpdateMessageBuilder(g);
 952
 953         // Send group message only to the recipient who requested it
 954         return sendMessage(messageBuilder, Set.of(resolveRecipient(recipient)));
 955     }
 956
 957     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
 958         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 959                 .withId(g.getGroupId().serialize())
 960                 .withName(g.name)
 961                 .withMembers(g.getMembers()
 962                         .stream()
 963                         .map(this::resolveSignalServiceAddress)
 964                         .collect(Collectors.toList()));
 965
 966         try {
 967             final var attachment = createGroupAvatarAttachment(g.getGroupId());
 968             if (attachment.isPresent()) {
 969                 group.withAvatar(attachment.get());
 970             }
 971         } catch (IOException e) {
 972             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
 973         }
 974
 975         return SignalServiceDataMessage.newBuilder()
 976                 .asGroupMessage(group.build())
 977                 .withExpiration(g.getMessageExpirationTime());
 978     }
 979
 980     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
 981         var group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
 982                 .withRevision(g.getGroup().getRevision())
 983                 .withSignedGroupChange(signedGroupChange);
 984         return SignalServiceDataMessage.newBuilder()
 985                 .asGroupMessage(group.build())
 986                 .withExpiration(g.getMessageExpirationTime());
 987     }
 988
 989     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
 990             GroupIdV1 groupId, SignalServiceAddress recipient
 991     ) throws IOException {
 992         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO).withId(groupId.serialize());
 993
 994         var messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group.build());
 995
 996         // Send group info request message to the recipient who sent us a message with this groupId
 997         return sendMessage(messageBuilder, Set.of(resolveRecipient(recipient)));
 998     }
 999
1000     void sendReceipt(
1001             SignalServiceAddress remoteAddress, long messageId
1002     ) throws IOException, UntrustedIdentityException {
1003         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
1004                 List.of(messageId),
1005                 System.currentTimeMillis());
1006
1007         createMessageSender().sendReceipt(remoteAddress,
1008                 unidentifiedAccessHelper.getAccessFor(resolveRecipient(remoteAddress)),
1009                 receiptMessage);
1010     }
1011
1012     public Pair<Long, List<SendMessageResult>> sendMessage(
1013             String messageText, List<String> attachments, List<String> recipients
1014     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
1015         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
1016         if (attachments != null) {
1017             var attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
1018
1019             // Upload attachments here, so we only upload once even for multiple recipients
1020             var messageSender = createMessageSender();
1021             var attachmentPointers = new ArrayList<SignalServiceAttachment>(attachmentStreams.size());
1022             for (var attachment : attachmentStreams) {
1023                 if (attachment.isStream()) {
1024                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
1025                 } else if (attachment.isPointer()) {
1026                     attachmentPointers.add(attachment.asPointer());
1027                 }
1028             }
1029
1030             messageBuilder.withAttachments(attachmentPointers);
1031         }
1032         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1033     }
1034
1035     public Pair<Long, SendMessageResult> sendSelfMessage(
1036             String messageText, List<String> attachments
1037     ) throws IOException, AttachmentInvalidException {
1038         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
1039         if (attachments != null) {
1040             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
1041         }
1042         return sendSelfMessage(messageBuilder);
1043     }
1044
1045     public Pair<Long, List<SendMessageResult>> sendRemoteDeleteMessage(
1046             long targetSentTimestamp, List<String> recipients
1047     ) throws IOException, InvalidNumberException {
1048         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1049         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
1050         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1051     }
1052
1053     public Pair<Long, List<SendMessageResult>> sendGroupRemoteDeleteMessage(
1054             long targetSentTimestamp, GroupId groupId
1055     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1056         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1057         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
1058         return sendGroupMessage(messageBuilder, groupId);
1059     }
1060
1061     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
1062             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
1063     ) throws IOException, InvalidNumberException {
1064         var reaction = new SignalServiceDataMessage.Reaction(emoji,
1065                 remove,
1066                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
1067                 targetSentTimestamp);
1068         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
1069         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1070     }
1071
1072     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1073         var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
1074
1075         final var signalServiceAddresses = getSignalServiceAddresses(recipients);
1076         try {
1077             return sendMessage(messageBuilder, signalServiceAddresses);
1078         } catch (Exception e) {
1079             for (var address : signalServiceAddresses) {
1080                 handleEndSession(address);
1081             }
1082             throw e;
1083         }
1084     }
1085
1086     public String getContactName(String number) throws InvalidNumberException {
1087         var contact = account.getContactStore().getContact(canonicalizeAndResolveRecipient(number));
1088         return contact == null || contact.getName() == null ? "" : contact.getName();
1089     }
1090
1091     public void setContactName(String number, String name) throws InvalidNumberException {
1092         final var recipientId = canonicalizeAndResolveRecipient(number);
1093         var contact = account.getContactStore().getContact(recipientId);
1094         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1095         account.getContactStore().storeContact(recipientId, builder.withName(name).build());
1096     }
1097
1098     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
1099         setContactBlocked(canonicalizeAndResolveRecipient(number), blocked);
1100     }
1101
1102     private void setContactBlocked(RecipientId recipientId, boolean blocked) {
1103         var contact = account.getContactStore().getContact(recipientId);
1104         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1105         account.getContactStore().storeContact(recipientId, builder.withBlocked(blocked).build());
1106     }
1107
1108     public void setGroupBlocked(final GroupId groupId, final boolean blocked) throws GroupNotFoundException {
1109         var group = getGroup(groupId);
1110         if (group == null) {
1111             throw new GroupNotFoundException(groupId);
1112         }
1113
1114         group.setBlocked(blocked);
1115         account.getGroupStore().updateGroup(group);
1116     }
1117
1118     private void setExpirationTimer(RecipientId recipientId, int messageExpirationTimer) {
1119         var contact = account.getContactStore().getContact(recipientId);
1120         if (contact != null && contact.getMessageExpirationTime() == messageExpirationTimer) {
1121             return;
1122         }
1123         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1124         account.getContactStore()
1125                 .storeContact(recipientId, builder.withMessageExpirationTime(messageExpirationTimer).build());
1126     }
1127
1128     private void sendExpirationTimerUpdate(RecipientId recipientId) throws IOException {
1129         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
1130         sendMessage(messageBuilder, Set.of(recipientId));
1131     }
1132
1133     /**
1134      * Change the expiration timer for a contact
1135      */
1136     public void setExpirationTimer(
1137             String number, int messageExpirationTimer
1138     ) throws IOException, InvalidNumberException {
1139         var recipientId = canonicalizeAndResolveRecipient(number);
1140         setExpirationTimer(recipientId, messageExpirationTimer);
1141         sendExpirationTimerUpdate(recipientId);
1142     }
1143
1144     /**
1145      * Change the expiration timer for a group
1146      */
1147     public void setExpirationTimer(GroupId groupId, int messageExpirationTimer) {
1148         var g = getGroup(groupId);
1149         if (g instanceof GroupInfoV1) {
1150             var groupInfoV1 = (GroupInfoV1) g;
1151             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1152             account.getGroupStore().updateGroup(groupInfoV1);
1153         } else {
1154             throw new RuntimeException("TODO Not implemented!");
1155         }
1156     }
1157
1158     /**
1159      * Upload the sticker pack from path.
1160      *
1161      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1162      * @return if successful, returns the URL to install the sticker pack in the signal app
1163      */
1164     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1165         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
1166
1167         var messageSender = createMessageSender();
1168
1169         var packKey = KeyUtils.createStickerUploadKey();
1170         var packId = messageSender.uploadStickerManifest(manifest, packKey);
1171
1172         var sticker = new Sticker(StickerPackId.deserialize(Hex.fromStringCondensed(packId)), packKey);
1173         account.getStickerStore().updateSticker(sticker);
1174
1175         try {
1176             return new URI("https",
1177                     "signal.art",
1178                     "/addstickers/",
1179                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1180                             Hex.toStringCondensed(packKey),
1181                             StandardCharsets.UTF_8)).toString();
1182         } catch (URISyntaxException e) {
1183             throw new AssertionError(e);
1184         }
1185     }
1186
1187     void requestSyncGroups() throws IOException {
1188         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1189                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1190                 .build();
1191         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1192         try {
1193             sendSyncMessage(message);
1194         } catch (UntrustedIdentityException e) {
1195             throw new AssertionError(e);
1196         }
1197     }
1198
1199     void requestSyncContacts() throws IOException {
1200         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1201                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1202                 .build();
1203         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1204         try {
1205             sendSyncMessage(message);
1206         } catch (UntrustedIdentityException e) {
1207             throw new AssertionError(e);
1208         }
1209     }
1210
1211     void requestSyncBlocked() throws IOException {
1212         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1213                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1214                 .build();
1215         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1216         try {
1217             sendSyncMessage(message);
1218         } catch (UntrustedIdentityException e) {
1219             throw new AssertionError(e);
1220         }
1221     }
1222
1223     void requestSyncConfiguration() throws IOException {
1224         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1225                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1226                 .build();
1227         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1228         try {
1229             sendSyncMessage(message);
1230         } catch (UntrustedIdentityException e) {
1231             throw new AssertionError(e);
1232         }
1233     }
1234
1235     void requestSyncKeys() throws IOException {
1236         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1237                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
1238                 .build();
1239         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1240         try {
1241             sendSyncMessage(message);
1242         } catch (UntrustedIdentityException e) {
1243             throw new AssertionError(e);
1244         }
1245     }
1246
1247     private byte[] getSenderCertificate() {
1248         // TODO support UUID capable sender certificates
1249         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1250         byte[] certificate;
1251         try {
1252             certificate = accountManager.getSenderCertificate();
1253         } catch (IOException e) {
1254             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1255             return null;
1256         }
1257         // TODO cache for a day
1258         return certificate;
1259     }
1260
1261     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1262         var messageSender = createMessageSender();
1263         messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1264     }
1265
1266     private Set<RecipientId> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1267         final var signalServiceAddresses = new HashSet<SignalServiceAddress>(numbers.size());
1268         final var addressesMissingUuid = new HashSet<SignalServiceAddress>();
1269
1270         for (var number : numbers) {
1271             final var resolvedAddress = canonicalizeAndResolveSignalServiceAddress(number);
1272             if (resolvedAddress.getUuid().isPresent()) {
1273                 signalServiceAddresses.add(resolvedAddress);
1274             } else {
1275                 addressesMissingUuid.add(resolvedAddress);
1276             }
1277         }
1278
1279         final var numbersMissingUuid = addressesMissingUuid.stream()
1280                 .map(a -> a.getNumber().get())
1281                 .collect(Collectors.toSet());
1282         Map<String, UUID> registeredUsers;
1283         try {
1284             registeredUsers = getRegisteredUsers(numbersMissingUuid);
1285         } catch (IOException e) {
1286             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1287             registeredUsers = Map.of();
1288         }
1289
1290         for (var address : addressesMissingUuid) {
1291             final var number = address.getNumber().get();
1292             if (registeredUsers.containsKey(number)) {
1293                 final var newAddress = resolveSignalServiceAddress(resolveRecipientTrusted(new SignalServiceAddress(
1294                         registeredUsers.get(number),
1295                         number)));
1296                 signalServiceAddresses.add(newAddress);
1297             } else {
1298                 signalServiceAddresses.add(address);
1299             }
1300         }
1301
1302         return signalServiceAddresses.stream().map(this::resolveRecipient).collect(Collectors.toSet());
1303     }
1304
1305     private RecipientId refreshRegisteredUser(RecipientId recipientId) throws IOException {
1306         final var address = resolveSignalServiceAddress(recipientId);
1307         if (!address.getNumber().isPresent()) {
1308             return recipientId;
1309         }
1310         final var number = address.getNumber().get();
1311         final var uuidMap = getRegisteredUsers(Set.of(number));
1312         return resolveRecipientTrusted(new SignalServiceAddress(uuidMap.getOrDefault(number, null), number));
1313     }
1314
1315     private Map<String, UUID> getRegisteredUsers(final Set<String> numbers) throws IOException {
1316         try {
1317             return accountManager.getRegisteredUsers(ServiceConfig.getIasKeyStore(),
1318                     numbers,
1319                     serviceEnvironmentConfig.getCdsMrenclave());
1320         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
1321             throw new IOException(e);
1322         }
1323     }
1324
1325     private Pair<Long, List<SendMessageResult>> sendMessage(
1326             SignalServiceDataMessage.Builder messageBuilder, Set<RecipientId> recipientIds
1327     ) throws IOException {
1328         final var timestamp = System.currentTimeMillis();
1329         messageBuilder.withTimestamp(timestamp);
1330         getOrCreateMessagePipe();
1331         getOrCreateUnidentifiedMessagePipe();
1332         SignalServiceDataMessage message = null;
1333         try {
1334             message = messageBuilder.build();
1335             if (message.getGroupContext().isPresent()) {
1336                 try {
1337                     var messageSender = createMessageSender();
1338                     final var isRecipientUpdate = false;
1339                     final var recipientIdList = new ArrayList<>(recipientIds);
1340                     final var addresses = recipientIdList.stream()
1341                             .map(this::resolveSignalServiceAddress)
1342                             .collect(Collectors.toList());
1343                     var result = messageSender.sendMessage(addresses,
1344                             unidentifiedAccessHelper.getAccessFor(recipientIdList),
1345                             isRecipientUpdate,
1346                             message);
1347
1348                     for (var r : result) {
1349                         if (r.getIdentityFailure() != null) {
1350                             account.getIdentityKeyStore().
1351                                     saveIdentity(resolveRecipient(r.getAddress()),
1352                                             r.getIdentityFailure().getIdentityKey(),
1353                                             new Date());
1354                         }
1355                     }
1356
1357                     return new Pair<>(timestamp, result);
1358                 } catch (UntrustedIdentityException e) {
1359                     return new Pair<>(timestamp, List.of());
1360                 }
1361             } else {
1362                 // Send to all individually, so sync messages are sent correctly
1363                 messageBuilder.withProfileKey(account.getProfileKey().serialize());
1364                 var results = new ArrayList<SendMessageResult>(recipientIds.size());
1365                 for (var recipientId : recipientIds) {
1366                     final var contact = account.getContactStore().getContact(recipientId);
1367                     final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
1368                     messageBuilder.withExpiration(expirationTime);
1369                     message = messageBuilder.build();
1370                     results.add(sendMessage(resolveSignalServiceAddress(recipientId), message));
1371                 }
1372                 return new Pair<>(timestamp, results);
1373             }
1374         } finally {
1375             if (message != null && message.isEndSession()) {
1376                 for (var recipient : recipientIds) {
1377                     handleEndSession(recipient);
1378                 }
1379             }
1380         }
1381     }
1382
1383     private Pair<Long, SendMessageResult> sendSelfMessage(
1384             SignalServiceDataMessage.Builder messageBuilder
1385     ) throws IOException {
1386         final var timestamp = System.currentTimeMillis();
1387         messageBuilder.withTimestamp(timestamp);
1388         getOrCreateMessagePipe();
1389         getOrCreateUnidentifiedMessagePipe();
1390         final var recipientId = account.getSelfRecipientId();
1391
1392         final var contact = account.getContactStore().getContact(recipientId);
1393         final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
1394         messageBuilder.withExpiration(expirationTime);
1395
1396         var message = messageBuilder.build();
1397         final var result = sendSelfMessage(message);
1398         return new Pair<>(timestamp, result);
1399     }
1400
1401     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1402         var messageSender = createMessageSender();
1403
1404         var recipient = account.getSelfAddress();
1405
1406         final var unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(resolveRecipient(recipient));
1407         var transcript = new SentTranscriptMessage(Optional.of(recipient),
1408                 message.getTimestamp(),
1409                 message,
1410                 message.getExpiresInSeconds(),
1411                 Map.of(recipient, unidentifiedAccess.isPresent()),
1412                 false);
1413         var syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1414
1415         try {
1416             var startTime = System.currentTimeMillis();
1417             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1418             return SendMessageResult.success(recipient,
1419                     unidentifiedAccess.isPresent(),
1420                     false,
1421                     System.currentTimeMillis() - startTime);
1422         } catch (UntrustedIdentityException e) {
1423             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1424         }
1425     }
1426
1427     private SendMessageResult sendMessage(
1428             SignalServiceAddress address, SignalServiceDataMessage message
1429     ) throws IOException {
1430         var messageSender = createMessageSender();
1431
1432         final var recipientId = resolveRecipient(address);
1433         try {
1434             try {
1435                 return messageSender.sendMessage(address, unidentifiedAccessHelper.getAccessFor(recipientId), message);
1436             } catch (UnregisteredUserException e) {
1437                 final var newRecipientId = refreshRegisteredUser(recipientId);
1438                 return messageSender.sendMessage(resolveSignalServiceAddress(newRecipientId),
1439                         unidentifiedAccessHelper.getAccessFor(newRecipientId),
1440                         message);
1441             }
1442         } catch (UntrustedIdentityException e) {
1443             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1444         }
1445     }
1446
1447     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1448         var cipher = new SignalServiceCipher(account.getSelfAddress(),
1449                 account.getSignalProtocolStore(),
1450                 certificateValidator);
1451         try {
1452             return cipher.decrypt(envelope);
1453         } catch (ProtocolUntrustedIdentityException e) {
1454             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1455                 throw (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1456             }
1457             throw new AssertionError(e);
1458         }
1459     }
1460
1461     private void handleEndSession(RecipientId recipientId) {
1462         account.getSessionStore().deleteAllSessions(recipientId);
1463     }
1464
1465     private List<HandleAction> handleSignalServiceDataMessage(
1466             SignalServiceDataMessage message,
1467             boolean isSync,
1468             SignalServiceAddress source,
1469             SignalServiceAddress destination,
1470             boolean ignoreAttachments
1471     ) {
1472         var actions = new ArrayList<HandleAction>();
1473         if (message.getGroupContext().isPresent()) {
1474             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1475                 var groupInfo = message.getGroupContext().get().getGroupV1().get();
1476                 var groupId = GroupId.v1(groupInfo.getGroupId());
1477                 var group = getGroup(groupId);
1478                 if (group == null || group instanceof GroupInfoV1) {
1479                     var groupV1 = (GroupInfoV1) group;
1480                     switch (groupInfo.getType()) {
1481                         case UPDATE: {
1482                             if (groupV1 == null) {
1483                                 groupV1 = new GroupInfoV1(groupId);
1484                             }
1485
1486                             if (groupInfo.getAvatar().isPresent()) {
1487                                 var avatar = groupInfo.getAvatar().get();
1488                                 downloadGroupAvatar(avatar, groupV1.getGroupId());
1489                             }
1490
1491                             if (groupInfo.getName().isPresent()) {
1492                                 groupV1.name = groupInfo.getName().get();
1493                             }
1494
1495                             if (groupInfo.getMembers().isPresent()) {
1496                                 groupV1.addMembers(groupInfo.getMembers()
1497                                         .get()
1498                                         .stream()
1499                                         .map(this::resolveRecipient)
1500                                         .collect(Collectors.toSet()));
1501                             }
1502
1503                             account.getGroupStore().updateGroup(groupV1);
1504                             break;
1505                         }
1506                         case DELIVER:
1507                             if (groupV1 == null && !isSync) {
1508                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1509                             }
1510                             break;
1511                         case QUIT: {
1512                             if (groupV1 != null) {
1513                                 groupV1.removeMember(resolveRecipient(source));
1514                                 account.getGroupStore().updateGroup(groupV1);
1515                             }
1516                             break;
1517                         }
1518                         case REQUEST_INFO:
1519                             if (groupV1 != null && !isSync) {
1520                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
1521                             }
1522                             break;
1523                     }
1524                 } else {
1525                     // Received a group v1 message for a v2 group
1526                 }
1527             }
1528             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1529                 final var groupContext = message.getGroupContext().get().getGroupV2().get();
1530                 final var groupMasterKey = groupContext.getMasterKey();
1531
1532                 getOrMigrateGroup(groupMasterKey,
1533                         groupContext.getRevision(),
1534                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1535             }
1536         }
1537
1538         final var conversationPartnerAddress = isSync ? destination : source;
1539         if (conversationPartnerAddress != null && message.isEndSession()) {
1540             handleEndSession(resolveRecipient(conversationPartnerAddress));
1541         }
1542         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1543             if (message.getGroupContext().isPresent()) {
1544                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1545                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1546                     var group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1547                     if (group != null) {
1548                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1549                             group.messageExpirationTime = message.getExpiresInSeconds();
1550                             account.getGroupStore().updateGroup(group);
1551                         }
1552                     }
1553                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1554                     // disappearing message timer already stored in the DecryptedGroup
1555                 }
1556             } else if (conversationPartnerAddress != null) {
1557                 setExpirationTimer(resolveRecipient(conversationPartnerAddress), message.getExpiresInSeconds());
1558             }
1559         }
1560         if (!ignoreAttachments) {
1561             if (message.getAttachments().isPresent()) {
1562                 for (var attachment : message.getAttachments().get()) {
1563                     downloadAttachment(attachment);
1564                 }
1565             }
1566             if (message.getSharedContacts().isPresent()) {
1567                 for (var contact : message.getSharedContacts().get()) {
1568                     if (contact.getAvatar().isPresent()) {
1569                         downloadAttachment(contact.getAvatar().get().getAttachment());
1570                     }
1571                 }
1572             }
1573         }
1574         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1575             final ProfileKey profileKey;
1576             try {
1577                 profileKey = new ProfileKey(message.getProfileKey().get());
1578             } catch (InvalidInputException e) {
1579                 throw new AssertionError(e);
1580             }
1581             if (source.matches(account.getSelfAddress())) {
1582                 this.account.setProfileKey(profileKey);
1583             }
1584             this.account.getProfileStore().storeProfileKey(resolveRecipient(source), profileKey);
1585         }
1586         if (message.getPreviews().isPresent()) {
1587             final var previews = message.getPreviews().get();
1588             for (var preview : previews) {
1589                 if (preview.getImage().isPresent()) {
1590                     downloadAttachment(preview.getImage().get());
1591                 }
1592             }
1593         }
1594         if (message.getQuote().isPresent()) {
1595             final var quote = message.getQuote().get();
1596
1597             for (var quotedAttachment : quote.getAttachments()) {
1598                 final var thumbnail = quotedAttachment.getThumbnail();
1599                 if (thumbnail != null) {
1600                     downloadAttachment(thumbnail);
1601                 }
1602             }
1603         }
1604         if (message.getSticker().isPresent()) {
1605             final var messageSticker = message.getSticker().get();
1606             final var stickerPackId = StickerPackId.deserialize(messageSticker.getPackId());
1607             var sticker = account.getStickerStore().getSticker(stickerPackId);
1608             if (sticker == null) {
1609                 sticker = new Sticker(stickerPackId, messageSticker.getPackKey());
1610                 account.getStickerStore().updateSticker(sticker);
1611             }
1612         }
1613         return actions;
1614     }
1615
1616     private GroupInfoV2 getOrMigrateGroup(
1617             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1618     ) {
1619         final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1620
1621         var groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1622         var groupInfo = getGroup(groupId);
1623         final GroupInfoV2 groupInfoV2;
1624         if (groupInfo instanceof GroupInfoV1) {
1625             // Received a v2 group message for a v1 group, we need to locally migrate the group
1626             account.getGroupStore().deleteGroupV1(((GroupInfoV1) groupInfo).getGroupId());
1627             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1628             logger.info("Locally migrated group {} to group v2, id: {}",
1629                     groupInfo.getGroupId().toBase64(),
1630                     groupInfoV2.getGroupId().toBase64());
1631         } else if (groupInfo instanceof GroupInfoV2) {
1632             groupInfoV2 = (GroupInfoV2) groupInfo;
1633         } else {
1634             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1635         }
1636
1637         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1638             DecryptedGroup group = null;
1639             if (signedGroupChange != null
1640                     && groupInfoV2.getGroup() != null
1641                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1642                 group = groupHelper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(), signedGroupChange, groupMasterKey);
1643             }
1644             if (group == null) {
1645                 group = groupHelper.getDecryptedGroup(groupSecretParams);
1646             }
1647             if (group != null) {
1648                 storeProfileKeysFromMembers(group);
1649                 final var avatar = group.getAvatar();
1650                 if (avatar != null && !avatar.isEmpty()) {
1651                     downloadGroupAvatar(groupId, groupSecretParams, avatar);
1652                 }
1653             }
1654             groupInfoV2.setGroup(group, this::resolveRecipient);
1655             account.getGroupStore().updateGroup(groupInfoV2);
1656         }
1657
1658         return groupInfoV2;
1659     }
1660
1661     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1662         for (var member : group.getMembersList()) {
1663             final var address = resolveRecipient(new SignalServiceAddress(UuidUtil.parseOrThrow(member.getUuid()
1664                     .toByteArray()), null));
1665             try {
1666                 account.getProfileStore()
1667                         .storeProfileKey(address, new ProfileKey(member.getProfileKey().toByteArray()));
1668             } catch (InvalidInputException ignored) {
1669             }
1670         }
1671     }
1672
1673     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1674         Set<HandleAction> queuedActions = new HashSet<>();
1675         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
1676             var actions = retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
1677             if (actions != null) {
1678                 queuedActions.addAll(actions);
1679             }
1680         }
1681         for (var action : queuedActions) {
1682             try {
1683                 action.execute(this);
1684             } catch (Throwable e) {
1685                 logger.warn("Message action failed.", e);
1686             }
1687         }
1688     }
1689
1690     private List<HandleAction> retryFailedReceivedMessage(
1691             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
1692     ) {
1693         var envelope = cachedMessage.loadEnvelope();
1694         if (envelope == null) {
1695             return null;
1696         }
1697         SignalServiceContent content = null;
1698         List<HandleAction> actions = null;
1699         if (!envelope.isReceipt()) {
1700             try {
1701                 content = decryptMessage(envelope);
1702             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1703                 if (!envelope.hasSource()) {
1704                     final var recipientId = resolveRecipient(((org.whispersystems.libsignal.UntrustedIdentityException) e)
1705                             .getName());
1706                     try {
1707                         account.getMessageCache().replaceSender(cachedMessage, recipientId);
1708                     } catch (IOException ioException) {
1709                         logger.warn("Failed to move cached message to recipient folder: {}", ioException.getMessage());
1710                     }
1711                 }
1712                 return null;
1713             } catch (Exception er) {
1714                 // All other errors are not recoverable, so delete the cached message
1715                 cachedMessage.delete();
1716                 return null;
1717             }
1718             actions = handleMessage(envelope, content, ignoreAttachments);
1719         }
1720         handler.handleMessage(envelope, content, null);
1721         cachedMessage.delete();
1722         return actions;
1723     }
1724
1725     public void receiveMessages(
1726             long timeout,
1727             TimeUnit unit,
1728             boolean returnOnTimeout,
1729             boolean ignoreAttachments,
1730             ReceiveMessageHandler handler
1731     ) throws IOException {
1732         retryFailedReceivedMessages(handler, ignoreAttachments);
1733
1734         Set<HandleAction> queuedActions = null;
1735
1736         final var messagePipe = getOrCreateMessagePipe();
1737
1738         var hasCaughtUpWithOldMessages = false;
1739
1740         while (true) {
1741             SignalServiceEnvelope envelope;
1742             SignalServiceContent content = null;
1743             Exception exception = null;
1744             final CachedMessage[] cachedMessage = {null};
1745             try {
1746                 var result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1747                     final var recipientId = envelope1.hasSource()
1748                             ? resolveRecipient(envelope1.getSourceIdentifier())
1749                             : null;
1750                     // store message on disk, before acknowledging receipt to the server
1751                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1, recipientId);
1752                 });
1753                 if (result.isPresent()) {
1754                     envelope = result.get();
1755                 } else {
1756                     // Received indicator that server queue is empty
1757                     hasCaughtUpWithOldMessages = true;
1758
1759                     if (queuedActions != null) {
1760                         for (var action : queuedActions) {
1761                             try {
1762                                 action.execute(this);
1763                             } catch (Throwable e) {
1764                                 logger.warn("Message action failed.", e);
1765                             }
1766                         }
1767                         queuedActions.clear();
1768                         queuedActions = null;
1769                     }
1770
1771                     // Continue to wait another timeout for new messages
1772                     continue;
1773                 }
1774             } catch (TimeoutException e) {
1775                 if (returnOnTimeout) return;
1776                 continue;
1777             }
1778
1779             if (envelope.hasSource()) {
1780                 // Store uuid if we don't have it already
1781                 resolveRecipientTrusted(envelope.getSourceAddress());
1782             }
1783             final var notAGroupMember = isNotAGroupMember(envelope, content);
1784             if (!envelope.isReceipt()) {
1785                 try {
1786                     content = decryptMessage(envelope);
1787                 } catch (Exception e) {
1788                     exception = e;
1789                 }
1790                 var actions = handleMessage(envelope, content, ignoreAttachments);
1791                 if (hasCaughtUpWithOldMessages) {
1792                     for (var action : actions) {
1793                         try {
1794                             action.execute(this);
1795                         } catch (Throwable e) {
1796                             logger.warn("Message action failed.", e);
1797                         }
1798                     }
1799                 } else {
1800                     if (queuedActions == null) {
1801                         queuedActions = new HashSet<>();
1802                     }
1803                     queuedActions.addAll(actions);
1804                 }
1805             }
1806             if (isMessageBlocked(envelope, content)) {
1807                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
1808             } else if (notAGroupMember) {
1809                 logger.info("Ignoring a message from a non group member: {}", envelope.getTimestamp());
1810             } else {
1811                 handler.handleMessage(envelope, content, exception);
1812             }
1813             if (cachedMessage[0] != null) {
1814                 if (exception instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1815                     final var recipientId = resolveRecipient(((org.whispersystems.libsignal.UntrustedIdentityException) exception)
1816                             .getName());
1817                     queuedActions.add(new RetrieveProfileAction(recipientId));
1818                     if (!envelope.hasSource()) {
1819                         try {
1820                             cachedMessage[0] = account.getMessageCache().replaceSender(cachedMessage[0], recipientId);
1821                         } catch (IOException ioException) {
1822                             logger.warn("Failed to move cached message to recipient folder: {}",
1823                                     ioException.getMessage());
1824                         }
1825                     }
1826                 } else {
1827                     cachedMessage[0].delete();
1828                 }
1829             }
1830         }
1831     }
1832
1833     private boolean isMessageBlocked(
1834             SignalServiceEnvelope envelope, SignalServiceContent content
1835     ) {
1836         SignalServiceAddress source;
1837         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1838             source = envelope.getSourceAddress();
1839         } else if (content != null) {
1840             source = content.getSender();
1841         } else {
1842             return false;
1843         }
1844         final var recipientId = resolveRecipient(source);
1845         if (isContactBlocked(recipientId)) {
1846             return true;
1847         }
1848
1849         if (content != null && content.getDataMessage().isPresent()) {
1850             var message = content.getDataMessage().get();
1851             if (message.getGroupContext().isPresent()) {
1852                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1853                 var group = getGroup(groupId);
1854                 if (group != null && group.isBlocked()) {
1855                     return true;
1856                 }
1857             }
1858         }
1859         return false;
1860     }
1861
1862     public boolean isContactBlocked(final String identifier) throws InvalidNumberException {
1863         final var recipientId = canonicalizeAndResolveRecipient(identifier);
1864         return isContactBlocked(recipientId);
1865     }
1866
1867     private boolean isContactBlocked(final RecipientId recipientId) {
1868         var sourceContact = account.getContactStore().getContact(recipientId);
1869         return sourceContact != null && sourceContact.isBlocked();
1870     }
1871
1872     private boolean isNotAGroupMember(
1873             SignalServiceEnvelope envelope, SignalServiceContent content
1874     ) {
1875         SignalServiceAddress source;
1876         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1877             source = envelope.getSourceAddress();
1878         } else if (content != null) {
1879             source = content.getSender();
1880         } else {
1881             return false;
1882         }
1883
1884         if (content != null && content.getDataMessage().isPresent()) {
1885             var message = content.getDataMessage().get();
1886             if (message.getGroupContext().isPresent()) {
1887                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1888                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1889                     if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
1890                         return false;
1891                     }
1892                 }
1893                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1894                 var group = getGroup(groupId);
1895                 if (group != null && !group.isMember(resolveRecipient(source))) {
1896                     return true;
1897                 }
1898             }
1899         }
1900         return false;
1901     }
1902
1903     private List<HandleAction> handleMessage(
1904             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
1905     ) {
1906         var actions = new ArrayList<HandleAction>();
1907         if (content != null) {
1908             final SignalServiceAddress sender;
1909             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1910                 sender = envelope.getSourceAddress();
1911             } else {
1912                 sender = content.getSender();
1913             }
1914
1915             if (content.getDataMessage().isPresent()) {
1916                 var message = content.getDataMessage().get();
1917
1918                 if (content.isNeedsReceipt()) {
1919                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1920                 }
1921
1922                 actions.addAll(handleSignalServiceDataMessage(message,
1923                         false,
1924                         sender,
1925                         account.getSelfAddress(),
1926                         ignoreAttachments));
1927             }
1928             if (content.getSyncMessage().isPresent()) {
1929                 account.setMultiDevice(true);
1930                 var syncMessage = content.getSyncMessage().get();
1931                 if (syncMessage.getSent().isPresent()) {
1932                     var message = syncMessage.getSent().get();
1933                     final var destination = message.getDestination().orNull();
1934                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
1935                             true,
1936                             sender,
1937                             destination,
1938                             ignoreAttachments));
1939                 }
1940                 if (syncMessage.getRequest().isPresent() && account.isMasterDevice()) {
1941                     var rm = syncMessage.getRequest().get();
1942                     if (rm.isContactsRequest()) {
1943                         actions.add(SendSyncContactsAction.create());
1944                     }
1945                     if (rm.isGroupsRequest()) {
1946                         actions.add(SendSyncGroupsAction.create());
1947                     }
1948                     if (rm.isBlockedListRequest()) {
1949                         actions.add(SendSyncBlockedListAction.create());
1950                     }
1951                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
1952                 }
1953                 if (syncMessage.getGroups().isPresent()) {
1954                     File tmpFile = null;
1955                     try {
1956                         tmpFile = IOUtils.createTempFile();
1957                         final var groupsMessage = syncMessage.getGroups().get();
1958                         try (var attachmentAsStream = retrieveAttachmentAsStream(groupsMessage.asPointer(), tmpFile)) {
1959                             var s = new DeviceGroupsInputStream(attachmentAsStream);
1960                             DeviceGroup g;
1961                             while ((g = s.read()) != null) {
1962                                 var syncGroup = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(g.getId()));
1963                                 if (syncGroup != null) {
1964                                     if (g.getName().isPresent()) {
1965                                         syncGroup.name = g.getName().get();
1966                                     }
1967                                     syncGroup.addMembers(g.getMembers()
1968                                             .stream()
1969                                             .map(this::resolveRecipient)
1970                                             .collect(Collectors.toSet()));
1971                                     if (!g.isActive()) {
1972                                         syncGroup.removeMember(account.getSelfRecipientId());
1973                                     } else {
1974                                         // Add ourself to the member set as it's marked as active
1975                                         syncGroup.addMembers(List.of(account.getSelfRecipientId()));
1976                                     }
1977                                     syncGroup.blocked = g.isBlocked();
1978                                     if (g.getColor().isPresent()) {
1979                                         syncGroup.color = g.getColor().get();
1980                                     }
1981
1982                                     if (g.getAvatar().isPresent()) {
1983                                         downloadGroupAvatar(g.getAvatar().get(), syncGroup.getGroupId());
1984                                     }
1985                                     syncGroup.archived = g.isArchived();
1986                                     account.getGroupStore().updateGroup(syncGroup);
1987                                 }
1988                             }
1989                         }
1990                     } catch (Exception e) {
1991                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
1992                                 tmpFile,
1993                                 e.getMessage());
1994                     } finally {
1995                         if (tmpFile != null) {
1996                             try {
1997                                 Files.delete(tmpFile.toPath());
1998                             } catch (IOException e) {
1999                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
2000                                         tmpFile,
2001                                         e.getMessage());
2002                             }
2003                         }
2004                     }
2005                 }
2006                 if (syncMessage.getBlockedList().isPresent()) {
2007                     final var blockedListMessage = syncMessage.getBlockedList().get();
2008                     for (var address : blockedListMessage.getAddresses()) {
2009                         setContactBlocked(resolveRecipient(address), true);
2010                     }
2011                     for (var groupId : blockedListMessage.getGroupIds()
2012                             .stream()
2013                             .map(GroupId::unknownVersion)
2014                             .collect(Collectors.toSet())) {
2015                         try {
2016                             setGroupBlocked(groupId, true);
2017                         } catch (GroupNotFoundException e) {
2018                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
2019                                     groupId.toBase64());
2020                         }
2021                     }
2022                 }
2023                 if (syncMessage.getContacts().isPresent()) {
2024                     File tmpFile = null;
2025                     try {
2026                         tmpFile = IOUtils.createTempFile();
2027                         final var contactsMessage = syncMessage.getContacts().get();
2028                         try (var attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
2029                                 .asPointer(), tmpFile)) {
2030                             var s = new DeviceContactsInputStream(attachmentAsStream);
2031                             DeviceContact c;
2032                             while ((c = s.read()) != null) {
2033                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
2034                                     account.setProfileKey(c.getProfileKey().get());
2035                                 }
2036                                 final var recipientId = resolveRecipientTrusted(c.getAddress());
2037                                 var contact = account.getContactStore().getContact(recipientId);
2038                                 final var builder = contact == null
2039                                         ? Contact.newBuilder()
2040                                         : Contact.newBuilder(contact);
2041                                 if (c.getName().isPresent()) {
2042                                     builder.withName(c.getName().get());
2043                                 }
2044                                 if (c.getColor().isPresent()) {
2045                                     builder.withColor(c.getColor().get());
2046                                 }
2047                                 if (c.getProfileKey().isPresent()) {
2048                                     account.getProfileStore().storeProfileKey(recipientId, c.getProfileKey().get());
2049                                 }
2050                                 if (c.getVerified().isPresent()) {
2051                                     final var verifiedMessage = c.getVerified().get();
2052                                     account.getIdentityKeyStore()
2053                                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2054                                                     verifiedMessage.getIdentityKey(),
2055                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2056                                 }
2057                                 if (c.getExpirationTimer().isPresent()) {
2058                                     builder.withMessageExpirationTime(c.getExpirationTimer().get());
2059                                 }
2060                                 builder.withBlocked(c.isBlocked());
2061                                 builder.withArchived(c.isArchived());
2062                                 account.getContactStore().storeContact(recipientId, builder.build());
2063
2064                                 if (c.getAvatar().isPresent()) {
2065                                     downloadContactAvatar(c.getAvatar().get(), c.getAddress());
2066                                 }
2067                             }
2068                         }
2069                     } catch (Exception e) {
2070                         logger.warn("Failed to handle received sync contacts “{}”, ignoring: {}",
2071                                 tmpFile,
2072                                 e.getMessage());
2073                     } finally {
2074                         if (tmpFile != null) {
2075                             try {
2076                                 Files.delete(tmpFile.toPath());
2077                             } catch (IOException e) {
2078                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2079                                         tmpFile,
2080                                         e.getMessage());
2081                             }
2082                         }
2083                     }
2084                 }
2085                 if (syncMessage.getVerified().isPresent()) {
2086                     final var verifiedMessage = syncMessage.getVerified().get();
2087                     account.getIdentityKeyStore()
2088                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2089                                     verifiedMessage.getIdentityKey(),
2090                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2091                 }
2092                 if (syncMessage.getStickerPackOperations().isPresent()) {
2093                     final var stickerPackOperationMessages = syncMessage.getStickerPackOperations().get();
2094                     for (var m : stickerPackOperationMessages) {
2095                         if (!m.getPackId().isPresent()) {
2096                             continue;
2097                         }
2098                         final var stickerPackId = StickerPackId.deserialize(m.getPackId().get());
2099                         var sticker = account.getStickerStore().getSticker(stickerPackId);
2100                         if (sticker == null) {
2101                             if (!m.getPackKey().isPresent()) {
2102                                 continue;
2103                             }
2104                             sticker = new Sticker(stickerPackId, m.getPackKey().get());
2105                         }
2106                         sticker.setInstalled(!m.getType().isPresent()
2107                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2108                         account.getStickerStore().updateSticker(sticker);
2109                     }
2110                 }
2111                 if (syncMessage.getFetchType().isPresent()) {
2112                     switch (syncMessage.getFetchType().get()) {
2113                         case LOCAL_PROFILE:
2114                             getRecipientProfile(account.getSelfRecipientId(), true);
2115                         case STORAGE_MANIFEST:
2116                             // TODO
2117                     }
2118                 }
2119                 if (syncMessage.getKeys().isPresent()) {
2120                     final var keysMessage = syncMessage.getKeys().get();
2121                     if (keysMessage.getStorageService().isPresent()) {
2122                         final var storageKey = keysMessage.getStorageService().get();
2123                         account.setStorageKey(storageKey);
2124                     }
2125                 }
2126                 if (syncMessage.getConfiguration().isPresent()) {
2127                     // TODO
2128                 }
2129             }
2130         }
2131         return actions;
2132     }
2133
2134     private void downloadContactAvatar(SignalServiceAttachment avatar, SignalServiceAddress address) {
2135         try {
2136             avatarStore.storeContactAvatar(address, outputStream -> retrieveAttachment(avatar, outputStream));
2137         } catch (IOException e) {
2138             logger.warn("Failed to download avatar for contact {}, ignoring: {}", address, e.getMessage());
2139         }
2140     }
2141
2142     private void downloadGroupAvatar(SignalServiceAttachment avatar, GroupId groupId) {
2143         try {
2144             avatarStore.storeGroupAvatar(groupId, outputStream -> retrieveAttachment(avatar, outputStream));
2145         } catch (IOException e) {
2146             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2147         }
2148     }
2149
2150     private void downloadGroupAvatar(GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey) {
2151         try {
2152             avatarStore.storeGroupAvatar(groupId,
2153                     outputStream -> retrieveGroupV2Avatar(groupSecretParams, cdnKey, outputStream));
2154         } catch (IOException e) {
2155             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2156         }
2157     }
2158
2159     private void downloadProfileAvatar(
2160             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2161     ) {
2162         try {
2163             avatarStore.storeProfileAvatar(address,
2164                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
2165         } catch (Throwable e) {
2166             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
2167         }
2168     }
2169
2170     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2171         return attachmentStore.getAttachmentFile(attachmentId);
2172     }
2173
2174     private void downloadAttachment(final SignalServiceAttachment attachment) {
2175         if (!attachment.isPointer()) {
2176             logger.warn("Invalid state, can't store an attachment stream.");
2177         }
2178
2179         var pointer = attachment.asPointer();
2180         if (pointer.getPreview().isPresent()) {
2181             final var preview = pointer.getPreview().get();
2182             try {
2183                 attachmentStore.storeAttachmentPreview(pointer.getRemoteId(),
2184                         outputStream -> outputStream.write(preview, 0, preview.length));
2185             } catch (IOException e) {
2186                 logger.warn("Failed to download attachment preview, ignoring: {}", e.getMessage());
2187             }
2188         }
2189
2190         try {
2191             attachmentStore.storeAttachment(pointer.getRemoteId(),
2192                     outputStream -> retrieveAttachmentPointer(pointer, outputStream));
2193         } catch (IOException e) {
2194             logger.warn("Failed to download attachment ({}), ignoring: {}", pointer.getRemoteId(), e.getMessage());
2195         }
2196     }
2197
2198     private void retrieveGroupV2Avatar(
2199             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
2200     ) throws IOException {
2201         var groupOperations = groupsV2Operations.forGroup(groupSecretParams);
2202
2203         var tmpFile = IOUtils.createTempFile();
2204         try (InputStream input = messageReceiver.retrieveGroupsV2ProfileAvatar(cdnKey,
2205                 tmpFile,
2206                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2207             var encryptedData = IOUtils.readFully(input);
2208
2209             var decryptedData = groupOperations.decryptAvatar(encryptedData);
2210             outputStream.write(decryptedData);
2211         } finally {
2212             try {
2213                 Files.delete(tmpFile.toPath());
2214             } catch (IOException e) {
2215                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2216                         tmpFile,
2217                         e.getMessage());
2218             }
2219         }
2220     }
2221
2222     private void retrieveProfileAvatar(
2223             String avatarPath, ProfileKey profileKey, OutputStream outputStream
2224     ) throws IOException {
2225         var tmpFile = IOUtils.createTempFile();
2226         try (var input = messageReceiver.retrieveProfileAvatar(avatarPath,
2227                 tmpFile,
2228                 profileKey,
2229                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2230             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2231             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2232         } finally {
2233             try {
2234                 Files.delete(tmpFile.toPath());
2235             } catch (IOException e) {
2236                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2237                         tmpFile,
2238                         e.getMessage());
2239             }
2240         }
2241     }
2242
2243     private void retrieveAttachment(
2244             final SignalServiceAttachment attachment, final OutputStream outputStream
2245     ) throws IOException {
2246         if (attachment.isPointer()) {
2247             var pointer = attachment.asPointer();
2248             retrieveAttachmentPointer(pointer, outputStream);
2249         } else {
2250             var stream = attachment.asStream();
2251             IOUtils.copyStream(stream.getInputStream(), outputStream);
2252         }
2253     }
2254
2255     private void retrieveAttachmentPointer(
2256             SignalServiceAttachmentPointer pointer, OutputStream outputStream
2257     ) throws IOException {
2258         var tmpFile = IOUtils.createTempFile();
2259         try (var input = retrieveAttachmentAsStream(pointer, tmpFile)) {
2260             IOUtils.copyStream(input, outputStream);
2261         } catch (MissingConfigurationException | InvalidMessageException e) {
2262             throw new IOException(e);
2263         } finally {
2264             try {
2265                 Files.delete(tmpFile.toPath());
2266             } catch (IOException e) {
2267                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2268                         tmpFile,
2269                         e.getMessage());
2270             }
2271         }
2272     }
2273
2274     private InputStream retrieveAttachmentAsStream(
2275             SignalServiceAttachmentPointer pointer, File tmpFile
2276     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2277         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2278     }
2279
2280     void sendGroups() throws IOException, UntrustedIdentityException {
2281         var groupsFile = IOUtils.createTempFile();
2282
2283         try {
2284             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2285                 var out = new DeviceGroupsOutputStream(fos);
2286                 for (var record : getGroups()) {
2287                     if (record instanceof GroupInfoV1) {
2288                         var groupInfo = (GroupInfoV1) record;
2289                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2290                                 Optional.fromNullable(groupInfo.name),
2291                                 groupInfo.getMembers()
2292                                         .stream()
2293                                         .map(this::resolveSignalServiceAddress)
2294                                         .collect(Collectors.toList()),
2295                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2296                                 groupInfo.isMember(account.getSelfRecipientId()),
2297                                 Optional.of(groupInfo.messageExpirationTime),
2298                                 Optional.fromNullable(groupInfo.color),
2299                                 groupInfo.blocked,
2300                                 Optional.absent(),
2301                                 groupInfo.archived));
2302                     }
2303                 }
2304             }
2305
2306             if (groupsFile.exists() && groupsFile.length() > 0) {
2307                 try (var groupsFileStream = new FileInputStream(groupsFile)) {
2308                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2309                             .withStream(groupsFileStream)
2310                             .withContentType("application/octet-stream")
2311                             .withLength(groupsFile.length())
2312                             .build();
2313
2314                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2315                 }
2316             }
2317         } finally {
2318             try {
2319                 Files.delete(groupsFile.toPath());
2320             } catch (IOException e) {
2321                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2322             }
2323         }
2324     }
2325
2326     public void sendContacts() throws IOException, UntrustedIdentityException {
2327         var contactsFile = IOUtils.createTempFile();
2328
2329         try {
2330             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2331                 var out = new DeviceContactsOutputStream(fos);
2332                 for (var contactPair : account.getContactStore().getContacts()) {
2333                     final var recipientId = contactPair.first();
2334                     final var contact = contactPair.second();
2335                     final var address = resolveSignalServiceAddress(recipientId);
2336
2337                     var currentIdentity = account.getIdentityKeyStore().getIdentity(recipientId);
2338                     VerifiedMessage verifiedMessage = null;
2339                     if (currentIdentity != null) {
2340                         verifiedMessage = new VerifiedMessage(address,
2341                                 currentIdentity.getIdentityKey(),
2342                                 currentIdentity.getTrustLevel().toVerifiedState(),
2343                                 currentIdentity.getDateAdded().getTime());
2344                     }
2345
2346                     var profileKey = account.getProfileStore().getProfileKey(recipientId);
2347                     out.write(new DeviceContact(address,
2348                             Optional.fromNullable(contact.getName()),
2349                             createContactAvatarAttachment(address),
2350                             Optional.fromNullable(contact.getColor()),
2351                             Optional.fromNullable(verifiedMessage),
2352                             Optional.fromNullable(profileKey),
2353                             contact.isBlocked(),
2354                             Optional.of(contact.getMessageExpirationTime()),
2355                             Optional.absent(),
2356                             contact.isArchived()));
2357                 }
2358
2359                 if (account.getProfileKey() != null) {
2360                     // Send our own profile key as well
2361                     out.write(new DeviceContact(account.getSelfAddress(),
2362                             Optional.absent(),
2363                             Optional.absent(),
2364                             Optional.absent(),
2365                             Optional.absent(),
2366                             Optional.of(account.getProfileKey()),
2367                             false,
2368                             Optional.absent(),
2369                             Optional.absent(),
2370                             false));
2371                 }
2372             }
2373
2374             if (contactsFile.exists() && contactsFile.length() > 0) {
2375                 try (var contactsFileStream = new FileInputStream(contactsFile)) {
2376                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2377                             .withStream(contactsFileStream)
2378                             .withContentType("application/octet-stream")
2379                             .withLength(contactsFile.length())
2380                             .build();
2381
2382                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2383                 }
2384             }
2385         } finally {
2386             try {
2387                 Files.delete(contactsFile.toPath());
2388             } catch (IOException e) {
2389                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2390             }
2391         }
2392     }
2393
2394     void sendBlockedList() throws IOException, UntrustedIdentityException {
2395         var addresses = new ArrayList<SignalServiceAddress>();
2396         for (var record : account.getContactStore().getContacts()) {
2397             if (record.second().isBlocked()) {
2398                 addresses.add(resolveSignalServiceAddress(record.first()));
2399             }
2400         }
2401         var groupIds = new ArrayList<byte[]>();
2402         for (var record : getGroups()) {
2403             if (record.isBlocked()) {
2404                 groupIds.add(record.getGroupId().serialize());
2405             }
2406         }
2407         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2408     }
2409
2410     private void sendVerifiedMessage(
2411             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2412     ) throws IOException, UntrustedIdentityException {
2413         var verifiedMessage = new VerifiedMessage(destination,
2414                 identityKey,
2415                 trustLevel.toVerifiedState(),
2416                 System.currentTimeMillis());
2417         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2418     }
2419
2420     public List<Pair<RecipientId, Contact>> getContacts() {
2421         return account.getContactStore().getContacts();
2422     }
2423
2424     public String getContactOrProfileName(String number) throws InvalidNumberException {
2425         final var recipientId = canonicalizeAndResolveRecipient(number);
2426         final var recipient = account.getRecipientStore().getRecipient(recipientId);
2427         if (recipient == null) {
2428             return null;
2429         }
2430
2431         if (recipient.getContact() != null && !Util.isEmpty(recipient.getContact().getName())) {
2432             return recipient.getContact().getName();
2433         }
2434
2435         if (recipient.getProfile() != null && recipient.getProfile() != null) {
2436             return recipient.getProfile().getDisplayName();
2437         }
2438
2439         return null;
2440     }
2441
2442     public GroupInfo getGroup(GroupId groupId) {
2443         final var group = account.getGroupStore().getGroup(groupId);
2444         if (group instanceof GroupInfoV2 && ((GroupInfoV2) group).getGroup() == null) {
2445             final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(((GroupInfoV2) group).getMasterKey());
2446             ((GroupInfoV2) group).setGroup(groupHelper.getDecryptedGroup(groupSecretParams), this::resolveRecipient);
2447             account.getGroupStore().updateGroup(group);
2448         }
2449         return group;
2450     }
2451
2452     public List<IdentityInfo> getIdentities() {
2453         return account.getIdentityKeyStore().getIdentities();
2454     }
2455
2456     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2457         final var identity = account.getIdentityKeyStore().getIdentity(canonicalizeAndResolveRecipient(number));
2458         return identity == null ? List.of() : List.of(identity);
2459     }
2460
2461     /**
2462      * Trust this the identity with this fingerprint
2463      *
2464      * @param name        username of the identity
2465      * @param fingerprint Fingerprint
2466      */
2467     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2468         var recipientId = canonicalizeAndResolveRecipient(name);
2469         return trustIdentity(recipientId,
2470                 identityKey -> Arrays.equals(identityKey.serialize(), fingerprint),
2471                 TrustLevel.TRUSTED_VERIFIED);
2472     }
2473
2474     /**
2475      * Trust this the identity with this safety number
2476      *
2477      * @param name         username of the identity
2478      * @param safetyNumber Safety number
2479      */
2480     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2481         var recipientId = canonicalizeAndResolveRecipient(name);
2482         var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2483         return trustIdentity(recipientId,
2484                 identityKey -> safetyNumber.equals(computeSafetyNumber(address, identityKey)),
2485                 TrustLevel.TRUSTED_VERIFIED);
2486     }
2487
2488     /**
2489      * Trust all keys of this identity without verification
2490      *
2491      * @param name username of the identity
2492      */
2493     public boolean trustIdentityAllKeys(String name) throws InvalidNumberException {
2494         var recipientId = canonicalizeAndResolveRecipient(name);
2495         return trustIdentity(recipientId, identityKey -> true, TrustLevel.TRUSTED_UNVERIFIED);
2496     }
2497
2498     private boolean trustIdentity(
2499             RecipientId recipientId, Function<IdentityKey, Boolean> verifier, TrustLevel trustLevel
2500     ) {
2501         var identity = account.getIdentityKeyStore().getIdentity(recipientId);
2502         if (identity == null) {
2503             return false;
2504         }
2505
2506         if (!verifier.apply(identity.getIdentityKey())) {
2507             return false;
2508         }
2509
2510         account.getIdentityKeyStore().setIdentityTrustLevel(recipientId, identity.getIdentityKey(), trustLevel);
2511         try {
2512             var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2513             sendVerifiedMessage(address, identity.getIdentityKey(), trustLevel);
2514         } catch (IOException | UntrustedIdentityException e) {
2515             logger.warn("Failed to send verification sync message: {}", e.getMessage());
2516         }
2517
2518         return true;
2519     }
2520
2521     public String computeSafetyNumber(
2522             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2523     ) {
2524         return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
2525                 account.getSelfAddress(),
2526                 getIdentityKeyPair().getPublicKey(),
2527                 theirAddress,
2528                 theirIdentityKey);
2529     }
2530
2531     @Deprecated
2532     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2533         var canonicalizedNumber = UuidUtil.isUuid(identifier)
2534                 ? identifier
2535                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2536         return resolveSignalServiceAddress(canonicalizedNumber);
2537     }
2538
2539     @Deprecated
2540     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2541         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2542
2543         return resolveSignalServiceAddress(address);
2544     }
2545
2546     @Deprecated
2547     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2548         if (address.matches(account.getSelfAddress())) {
2549             return account.getSelfAddress();
2550         }
2551
2552         return account.getRecipientStore().resolveServiceAddress(address);
2553     }
2554
2555     public SignalServiceAddress resolveSignalServiceAddress(RecipientId recipientId) {
2556         return account.getRecipientStore().resolveServiceAddress(recipientId);
2557     }
2558
2559     public RecipientId canonicalizeAndResolveRecipient(String identifier) throws InvalidNumberException {
2560         var canonicalizedNumber = UuidUtil.isUuid(identifier)
2561                 ? identifier
2562                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2563
2564         return resolveRecipient(canonicalizedNumber);
2565     }
2566
2567     private RecipientId resolveRecipient(final String identifier) {
2568         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2569
2570         return resolveRecipient(address);
2571     }
2572
2573     public RecipientId resolveRecipient(SignalServiceAddress address) {
2574         return account.getRecipientStore().resolveRecipient(address);
2575     }
2576
2577     private RecipientId resolveRecipientTrusted(SignalServiceAddress address) {
2578         return account.getRecipientStore().resolveRecipientTrusted(address);
2579     }
2580
2581     @Override
2582     public void close() throws IOException {
2583         close(true);
2584     }
2585
2586     void close(boolean closeAccount) throws IOException {
2587         executor.shutdown();
2588
2589         if (messagePipe != null) {
2590             messagePipe.shutdown();
2591             messagePipe = null;
2592         }
2593
2594         if (unidentifiedMessagePipe != null) {
2595             unidentifiedMessagePipe.shutdown();
2596             unidentifiedMessagePipe = null;
2597         }
2598
2599         if (closeAccount && account != null) {
2600             account.close();
2601         }
2602         account = null;
2603     }
2604
2605     public interface ReceiveMessageHandler {
2606
2607         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2608     }
2609 }