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

   1 /*
   2   Copyright (C) 2015-2021 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import org.asamk.signal.manager.config.ServiceConfig;
  20 import org.asamk.signal.manager.config.ServiceEnvironment;
  21 import org.asamk.signal.manager.config.ServiceEnvironmentConfig;
  22 import org.asamk.signal.manager.groups.GroupId;
  23 import org.asamk.signal.manager.groups.GroupIdV1;
  24 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  25 import org.asamk.signal.manager.groups.GroupNotFoundException;
  26 import org.asamk.signal.manager.groups.GroupUtils;
  27 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  28 import org.asamk.signal.manager.helper.GroupHelper;
  29 import org.asamk.signal.manager.helper.PinHelper;
  30 import org.asamk.signal.manager.helper.ProfileHelper;
  31 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  32 import org.asamk.signal.manager.storage.SignalAccount;
  33 import org.asamk.signal.manager.storage.groups.GroupInfo;
  34 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  35 import org.asamk.signal.manager.storage.groups.GroupInfoV2;
  36 import org.asamk.signal.manager.storage.identities.IdentityInfo;
  37 import org.asamk.signal.manager.storage.messageCache.CachedMessage;
  38 import org.asamk.signal.manager.storage.recipients.Contact;
  39 import org.asamk.signal.manager.storage.recipients.Profile;
  40 import org.asamk.signal.manager.storage.recipients.RecipientId;
  41 import org.asamk.signal.manager.storage.stickers.Sticker;
  42 import org.asamk.signal.manager.storage.stickers.StickerPackId;
  43 import org.asamk.signal.manager.util.AttachmentUtils;
  44 import org.asamk.signal.manager.util.IOUtils;
  45 import org.asamk.signal.manager.util.KeyUtils;
  46 import org.asamk.signal.manager.util.ProfileUtils;
  47 import org.asamk.signal.manager.util.StickerUtils;
  48 import org.asamk.signal.manager.util.Utils;
  49 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  50 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  51 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  52 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  53 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  54 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  55 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  56 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  57 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  58 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  59 import org.signal.libsignal.metadata.SelfSendException;
  60 import org.signal.libsignal.metadata.certificate.CertificateValidator;
  61 import org.signal.storageservice.protos.groups.GroupChange;
  62 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
  63 import org.signal.zkgroup.InvalidInputException;
  64 import org.signal.zkgroup.VerificationFailedException;
  65 import org.signal.zkgroup.groups.GroupMasterKey;
  66 import org.signal.zkgroup.groups.GroupSecretParams;
  67 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  68 import org.signal.zkgroup.profiles.ProfileKey;
  69 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  70 import org.slf4j.Logger;
  71 import org.slf4j.LoggerFactory;
  72 import org.whispersystems.libsignal.IdentityKey;
  73 import org.whispersystems.libsignal.IdentityKeyPair;
  74 import org.whispersystems.libsignal.InvalidKeyException;
  75 import org.whispersystems.libsignal.InvalidMessageException;
  76 import org.whispersystems.libsignal.ecc.ECPublicKey;
  77 import org.whispersystems.libsignal.state.PreKeyRecord;
  78 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  79 import org.whispersystems.libsignal.util.Pair;
  80 import org.whispersystems.libsignal.util.guava.Optional;
  81 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  82 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  83 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  84 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  85 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  86 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  87 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  88 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  89 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
  90 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  91 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  92 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  93 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  94 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  95 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  96 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  97 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  98 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  99 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
 100 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
 101 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
 102 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
 103 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
 104 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 105 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 106 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 107 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 108 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 109 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 110 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 111 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 112 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 113 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 114 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 115 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 116 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 117 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 118 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 119 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 120 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 121 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 122 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
 123 import org.whispersystems.signalservice.api.util.SleepTimer;
 124 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 125 import org.whispersystems.signalservice.api.util.UuidUtil;
 126 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 127 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 128 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 129 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 130 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 131 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 132 import org.whispersystems.signalservice.internal.util.Hex;
 133 import org.whispersystems.signalservice.internal.util.Util;
 134
 135 import java.io.Closeable;
 136 import java.io.File;
 137 import java.io.FileInputStream;
 138 import java.io.FileOutputStream;
 139 import java.io.IOException;
 140 import java.io.InputStream;
 141 import java.io.OutputStream;
 142 import java.net.URI;
 143 import java.net.URISyntaxException;
 144 import java.net.URLEncoder;
 145 import java.nio.charset.StandardCharsets;
 146 import java.nio.file.Files;
 147 import java.security.SignatureException;
 148 import java.util.ArrayList;
 149 import java.util.Arrays;
 150 import java.util.Base64;
 151 import java.util.Collection;
 152 import java.util.Date;
 153 import java.util.HashSet;
 154 import java.util.List;
 155 import java.util.Map;
 156 import java.util.Set;
 157 import java.util.UUID;
 158 import java.util.concurrent.ExecutorService;
 159 import java.util.concurrent.Executors;
 160 import java.util.concurrent.TimeUnit;
 161 import java.util.concurrent.TimeoutException;
 162 import java.util.function.Function;
 163 import java.util.stream.Collectors;
 164
 165 import static org.asamk.signal.manager.config.ServiceConfig.capabilities;
 166
 167 public class Manager implements Closeable {
 168
 169     private final static Logger logger = LoggerFactory.getLogger(Manager.class);
 170
 171     private final CertificateValidator certificateValidator;
 172
 173     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
 174     private final String userAgent;
 175
 176     private SignalAccount account;
 177     private final SignalServiceAccountManager accountManager;
 178     private final GroupsV2Api groupsV2Api;
 179     private final GroupsV2Operations groupsV2Operations;
 180     private final SignalServiceMessageReceiver messageReceiver;
 181     private final ClientZkProfileOperations clientZkProfileOperations;
 182
 183     private final ExecutorService executor = Executors.newCachedThreadPool();
 184
 185     private SignalServiceMessagePipe messagePipe = null;
 186     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 187
 188     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 189     private final ProfileHelper profileHelper;
 190     private final GroupHelper groupHelper;
 191     private final PinHelper pinHelper;
 192     private final AvatarStore avatarStore;
 193     private final AttachmentStore attachmentStore;
 194
 195     Manager(
 196             SignalAccount account,
 197             PathConfig pathConfig,
 198             ServiceEnvironmentConfig serviceEnvironmentConfig,
 199             String userAgent
 200     ) {
 201         this.account = account;
 202         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 203         this.certificateValidator = new CertificateValidator(serviceEnvironmentConfig.getUnidentifiedSenderTrustRoot());
 204         this.userAgent = userAgent;
 205         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 206                 serviceEnvironmentConfig.getSignalServiceConfiguration())) : null;
 207         final SleepTimer timer = new UptimeSleepTimer();
 208         this.accountManager = new SignalServiceAccountManager(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 209                 new DynamicCredentialsProvider(account.getUuid(),
 210                         account.getUsername(),
 211                         account.getPassword(),
 212                         account.getDeviceId()),
 213                 userAgent,
 214                 groupsV2Operations,
 215                 ServiceConfig.AUTOMATIC_NETWORK_RETRY,
 216                 timer);
 217         this.groupsV2Api = accountManager.getGroupsV2Api();
 218         final var keyBackupService = accountManager.getKeyBackupService(ServiceConfig.getIasKeyStore(),
 219                 serviceEnvironmentConfig.getKeyBackupConfig().getEnclaveName(),
 220                 serviceEnvironmentConfig.getKeyBackupConfig().getServiceId(),
 221                 serviceEnvironmentConfig.getKeyBackupConfig().getMrenclave(),
 222                 10);
 223
 224         this.pinHelper = new PinHelper(keyBackupService);
 225         this.clientZkProfileOperations = capabilities.isGv2()
 226                 ? ClientZkOperations.create(serviceEnvironmentConfig.getSignalServiceConfiguration())
 227                 .getProfileOperations()
 228                 : null;
 229         this.messageReceiver = new SignalServiceMessageReceiver(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 230                 account.getUuid(),
 231                 account.getUsername(),
 232                 account.getPassword(),
 233                 account.getDeviceId(),
 234                 userAgent,
 235                 null,
 236                 timer,
 237                 clientZkProfileOperations,
 238                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 239
 240         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 241                 account.getProfileStore()::getProfileKey,
 242                 this::getRecipientProfile,
 243                 this::getSenderCertificate);
 244         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 245                 unidentifiedAccessHelper::getAccessFor,
 246                 unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
 247                 () -> messageReceiver,
 248                 this::resolveSignalServiceAddress);
 249         this.groupHelper = new GroupHelper(this::getRecipientProfileKeyCredential,
 250                 this::getRecipientProfile,
 251                 account::getSelfRecipientId,
 252                 groupsV2Operations,
 253                 groupsV2Api,
 254                 this::getGroupAuthForToday,
 255                 this::resolveSignalServiceAddress);
 256         this.avatarStore = new AvatarStore(pathConfig.getAvatarsPath());
 257         this.attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
 258     }
 259
 260     public String getUsername() {
 261         return account.getUsername();
 262     }
 263
 264     public SignalServiceAddress getSelfAddress() {
 265         return account.getSelfAddress();
 266     }
 267
 268     public RecipientId getSelfRecipientId() {
 269         return account.getSelfRecipientId();
 270     }
 271
 272     private IdentityKeyPair getIdentityKeyPair() {
 273         return account.getIdentityKeyPair();
 274     }
 275
 276     public int getDeviceId() {
 277         return account.getDeviceId();
 278     }
 279
 280     public static Manager init(
 281             String username, File settingsPath, ServiceEnvironment serviceEnvironment, String userAgent
 282     ) throws IOException, NotRegisteredException {
 283         var pathConfig = PathConfig.createDefault(settingsPath);
 284
 285         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 286             throw new NotRegisteredException();
 287         }
 288
 289         var account = SignalAccount.load(pathConfig.getDataPath(), username);
 290
 291         if (!account.isRegistered()) {
 292             throw new NotRegisteredException();
 293         }
 294
 295         final var serviceEnvironmentConfig = ServiceConfig.getServiceEnvironmentConfig(serviceEnvironment, userAgent);
 296
 297         return new Manager(account, pathConfig, serviceEnvironmentConfig, userAgent);
 298     }
 299
 300     public static List<String> getAllLocalUsernames(File settingsPath) {
 301         var pathConfig = PathConfig.createDefault(settingsPath);
 302         final var dataPath = pathConfig.getDataPath();
 303         final var files = dataPath.listFiles();
 304
 305         if (files == null) {
 306             return List.of();
 307         }
 308
 309         return Arrays.stream(files)
 310                 .filter(File::isFile)
 311                 .map(File::getName)
 312                 .filter(file -> PhoneNumberFormatter.isValidNumber(file, null))
 313                 .collect(Collectors.toList());
 314     }
 315
 316     public void checkAccountState() throws IOException {
 317         if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 318             refreshPreKeys();
 319             account.save();
 320         }
 321         if (account.getUuid() == null) {
 322             account.setUuid(accountManager.getOwnUuid());
 323             account.save();
 324         }
 325         updateAccountAttributes();
 326     }
 327
 328     /**
 329      * This is used for checking a set of phone numbers for registration on Signal
 330      *
 331      * @param numbers The set of phone number in question
 332      * @return A map of numbers to booleans. True if registered, false otherwise. Should never be null
 333      * @throws IOException if its unable to get the contacts to check if they're registered
 334      */
 335     public Map<String, Boolean> areUsersRegistered(Set<String> numbers) throws IOException {
 336         // Note "contactDetails" has no optionals. It only gives us info on users who are registered
 337         var contactDetails = getRegisteredUsers(numbers);
 338
 339         var registeredUsers = contactDetails.keySet();
 340
 341         return numbers.stream().collect(Collectors.toMap(x -> x, registeredUsers::contains));
 342     }
 343
 344     public void updateAccountAttributes() throws IOException {
 345         accountManager.setAccountAttributes(null,
 346                 account.getLocalRegistrationId(),
 347                 true,
 348                 // set legacy pin only if no KBS master key is set
 349                 account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
 350                 account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 351                 account.getSelfUnidentifiedAccessKey(),
 352                 account.isUnrestrictedUnidentifiedAccess(),
 353                 capabilities,
 354                 account.isDiscoverableByPhoneNumber());
 355     }
 356
 357     /**
 358      * @param name       if null, the previous name will be kept
 359      * @param about      if null, the previous about text will be kept
 360      * @param aboutEmoji if null, the previous about emoji will be kept
 361      * @param avatar     if avatar is null the image from the local avatar store is used (if present),
 362      *                   if it's Optional.absent(), the avatar will be removed
 363      */
 364     public void setProfile(String name, String about, String aboutEmoji, Optional<File> avatar) throws IOException {
 365         var profile = getRecipientProfile(account.getSelfRecipientId());
 366         var builder = profile == null ? Profile.newBuilder() : Profile.newBuilder(profile);
 367         if (name != null) {
 368             builder.withGivenName(name);
 369             builder.withFamilyName(null);
 370         }
 371         if (about != null) {
 372             builder.withAbout(about);
 373         }
 374         if (aboutEmoji != null) {
 375             builder.withAboutEmoji(aboutEmoji);
 376         }
 377         var newProfile = builder.build();
 378
 379         try (final var streamDetails = avatar == null
 380                 ? avatarStore.retrieveProfileAvatar(getSelfAddress())
 381                 : avatar.isPresent() ? Utils.createStreamDetailsFromFile(avatar.get()) : null) {
 382             accountManager.setVersionedProfile(account.getUuid(),
 383                     account.getProfileKey(),
 384                     newProfile.getInternalServiceName(),
 385                     newProfile.getAbout(),
 386                     newProfile.getAboutEmoji(),
 387                     streamDetails);
 388         }
 389
 390         if (avatar != null) {
 391             if (avatar.isPresent()) {
 392                 avatarStore.storeProfileAvatar(getSelfAddress(),
 393                         outputStream -> IOUtils.copyFileToStream(avatar.get(), outputStream));
 394             } else {
 395                 avatarStore.deleteProfileAvatar(getSelfAddress());
 396             }
 397         }
 398         account.getProfileStore().storeProfile(account.getSelfRecipientId(), newProfile);
 399
 400         try {
 401             sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
 402         } catch (UntrustedIdentityException ignored) {
 403         }
 404     }
 405
 406     public void unregister() throws IOException {
 407         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 408         // If this is the master device, other users can't send messages to this number anymore.
 409         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 410         accountManager.setGcmId(Optional.absent());
 411         accountManager.deleteAccount();
 412
 413         account.setRegistered(false);
 414         account.save();
 415     }
 416
 417     public List<DeviceInfo> getLinkedDevices() throws IOException {
 418         var devices = accountManager.getDevices();
 419         account.setMultiDevice(devices.size() > 1);
 420         account.save();
 421         return devices;
 422     }
 423
 424     public void removeLinkedDevices(int deviceId) throws IOException {
 425         accountManager.removeDevice(deviceId);
 426         var devices = accountManager.getDevices();
 427         account.setMultiDevice(devices.size() > 1);
 428         account.save();
 429     }
 430
 431     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 432         var info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 433
 434         addDevice(info.deviceIdentifier, info.deviceKey);
 435     }
 436
 437     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 438         var identityKeyPair = getIdentityKeyPair();
 439         var verificationCode = accountManager.getNewDeviceVerificationCode();
 440
 441         accountManager.addDevice(deviceIdentifier,
 442                 deviceKey,
 443                 identityKeyPair,
 444                 Optional.of(account.getProfileKey().serialize()),
 445                 verificationCode);
 446         account.setMultiDevice(true);
 447         account.save();
 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());
 462             account.setPinMasterKey(masterKey);
 463         } else {
 464             // Remove legacy registration lock
 465             accountManager.removeRegistrationLockV1();
 466
 467             // Remove KBS Pin
 468             pinHelper.removeRegistrationLockPin();
 469
 470             account.setRegistrationLockPin(null);
 471             account.setPinMasterKey(null);
 472         }
 473         account.save();
 474     }
 475
 476     void refreshPreKeys() throws IOException {
 477         var oneTimePreKeys = generatePreKeys();
 478         final var identityKeyPair = getIdentityKeyPair();
 479         var signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 480
 481         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 482     }
 483
 484     private List<PreKeyRecord> generatePreKeys() {
 485         final var offset = account.getPreKeyIdOffset();
 486
 487         var records = KeyUtils.generatePreKeyRecords(offset, ServiceConfig.PREKEY_BATCH_SIZE);
 488         account.addPreKeys(records);
 489
 490         return records;
 491     }
 492
 493     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 494         final var signedPreKeyId = account.getNextSignedPreKeyId();
 495
 496         var record = KeyUtils.generateSignedPreKeyRecord(identityKeyPair, signedPreKeyId);
 497         account.addSignedPreKey(record);
 498
 499         return record;
 500     }
 501
 502     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 503         if (messagePipe == null) {
 504             messagePipe = messageReceiver.createMessagePipe();
 505         }
 506         return messagePipe;
 507     }
 508
 509     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 510         if (unidentifiedMessagePipe == null) {
 511             unidentifiedMessagePipe = messageReceiver.createUnidentifiedMessagePipe();
 512         }
 513         return unidentifiedMessagePipe;
 514     }
 515
 516     private SignalServiceMessageSender createMessageSender() {
 517         return new SignalServiceMessageSender(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 518                 account.getUuid(),
 519                 account.getUsername(),
 520                 account.getPassword(),
 521                 account.getDeviceId(),
 522                 account.getSignalProtocolStore(),
 523                 userAgent,
 524                 account.isMultiDevice(),
 525                 Optional.fromNullable(messagePipe),
 526                 Optional.fromNullable(unidentifiedMessagePipe),
 527                 Optional.absent(),
 528                 clientZkProfileOperations,
 529                 executor,
 530                 ServiceConfig.MAX_ENVELOPE_SIZE,
 531                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 532     }
 533
 534     public Profile getRecipientProfile(
 535             SignalServiceAddress address
 536     ) {
 537         return getRecipientProfile(resolveRecipient(address), false);
 538     }
 539
 540     public Profile getRecipientProfile(
 541             RecipientId recipientId
 542     ) {
 543         return getRecipientProfile(recipientId, false);
 544     }
 545
 546     private final Set<RecipientId> pendingProfileRequest = new HashSet<>();
 547
 548     Profile getRecipientProfile(
 549             RecipientId recipientId, boolean force
 550     ) {
 551         var profileKey = account.getProfileStore().getProfileKey(recipientId);
 552         if (profileKey == null) {
 553             if (force) {
 554                 // retrieve profile to get identity key
 555                 retrieveEncryptedProfile(recipientId);
 556             }
 557             return null;
 558         }
 559         var profile = account.getProfileStore().getProfile(recipientId);
 560
 561         var now = new Date().getTime();
 562         // Profiles are cached for 24h before retrieving them again, unless forced
 563         if (!force && profile != null && now - profile.getLastUpdateTimestamp() < 24 * 60 * 60 * 1000) {
 564             return profile;
 565         }
 566
 567         synchronized (pendingProfileRequest) {
 568             if (pendingProfileRequest.contains(recipientId)) {
 569                 return profile;
 570             }
 571             pendingProfileRequest.add(recipientId);
 572         }
 573         final SignalServiceProfile encryptedProfile;
 574         try {
 575             encryptedProfile = retrieveEncryptedProfile(recipientId);
 576         } finally {
 577             synchronized (pendingProfileRequest) {
 578                 pendingProfileRequest.remove(recipientId);
 579             }
 580         }
 581         if (encryptedProfile == null) {
 582             return null;
 583         }
 584
 585         profile = decryptProfileAndDownloadAvatar(recipientId, profileKey, encryptedProfile);
 586         account.getProfileStore().storeProfile(recipientId, profile);
 587
 588         return profile;
 589     }
 590
 591     private SignalServiceProfile retrieveEncryptedProfile(RecipientId recipientId) {
 592         try {
 593             return retrieveProfileAndCredential(recipientId, SignalServiceProfile.RequestType.PROFILE).getProfile();
 594         } catch (IOException e) {
 595             logger.warn("Failed to retrieve profile, ignoring: {}", e.getMessage());
 596             return null;
 597         }
 598     }
 599
 600     private ProfileAndCredential retrieveProfileAndCredential(
 601             final RecipientId recipientId, final SignalServiceProfile.RequestType requestType
 602     ) throws IOException {
 603         final var profileAndCredential = profileHelper.retrieveProfileSync(recipientId, requestType);
 604         final var profile = profileAndCredential.getProfile();
 605
 606         try {
 607             account.getIdentityKeyStore()
 608                     .saveIdentity(recipientId,
 609                             new IdentityKey(Base64.getDecoder().decode(profile.getIdentityKey())),
 610                             new Date());
 611         } catch (InvalidKeyException ignored) {
 612             logger.warn("Got invalid identity key in profile for {}",
 613                     resolveSignalServiceAddress(recipientId).getLegacyIdentifier());
 614         }
 615         return profileAndCredential;
 616     }
 617
 618     private ProfileKeyCredential getRecipientProfileKeyCredential(RecipientId recipientId) {
 619         var profileKeyCredential = account.getProfileStore().getProfileKeyCredential(recipientId);
 620         if (profileKeyCredential != null) {
 621             return profileKeyCredential;
 622         }
 623
 624         ProfileAndCredential profileAndCredential;
 625         try {
 626             profileAndCredential = retrieveProfileAndCredential(recipientId,
 627                     SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 628         } catch (IOException e) {
 629             logger.warn("Failed to retrieve profile key credential, ignoring: {}", e.getMessage());
 630             return null;
 631         }
 632
 633         profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 634         account.getProfileStore().storeProfileKeyCredential(recipientId, profileKeyCredential);
 635
 636         var profileKey = account.getProfileStore().getProfileKey(recipientId);
 637         if (profileKey != null) {
 638             final var profile = decryptProfileAndDownloadAvatar(recipientId,
 639                     profileKey,
 640                     profileAndCredential.getProfile());
 641             account.getProfileStore().storeProfile(recipientId, profile);
 642         }
 643
 644         return profileKeyCredential;
 645     }
 646
 647     private Profile decryptProfileAndDownloadAvatar(
 648             final RecipientId recipientId, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 649     ) {
 650         if (encryptedProfile.getAvatar() != null) {
 651             downloadProfileAvatar(resolveSignalServiceAddress(recipientId), encryptedProfile.getAvatar(), profileKey);
 652         }
 653
 654         return ProfileUtils.decryptProfile(profileKey, encryptedProfile);
 655     }
 656
 657     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(GroupId groupId) throws IOException {
 658         final var streamDetails = avatarStore.retrieveGroupAvatar(groupId);
 659         if (streamDetails == null) {
 660             return Optional.absent();
 661         }
 662
 663         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 664     }
 665
 666     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(SignalServiceAddress address) throws IOException {
 667         final var streamDetails = avatarStore.retrieveContactAvatar(address);
 668         if (streamDetails == null) {
 669             return Optional.absent();
 670         }
 671
 672         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 673     }
 674
 675     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 676         var g = getGroup(groupId);
 677         if (g == null) {
 678             throw new GroupNotFoundException(groupId);
 679         }
 680         if (!g.isMember(account.getSelfRecipientId())) {
 681             throw new NotAGroupMemberException(groupId, g.getTitle());
 682         }
 683         return g;
 684     }
 685
 686     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 687         var g = getGroup(groupId);
 688         if (g == null) {
 689             throw new GroupNotFoundException(groupId);
 690         }
 691         if (!g.isMember(account.getSelfRecipientId()) && !g.isPendingMember(account.getSelfRecipientId())) {
 692             throw new NotAGroupMemberException(groupId, g.getTitle());
 693         }
 694         return g;
 695     }
 696
 697     public List<GroupInfo> getGroups() {
 698         return account.getGroupStore().getGroups();
 699     }
 700
 701     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 702             String messageText, List<String> attachments, GroupId groupId
 703     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 704         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 705         if (attachments != null) {
 706             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 707         }
 708
 709         return sendGroupMessage(messageBuilder, groupId);
 710     }
 711
 712     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 713             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, GroupId groupId
 714     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 715         var reaction = new SignalServiceDataMessage.Reaction(emoji,
 716                 remove,
 717                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 718                 targetSentTimestamp);
 719         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
 720
 721         return sendGroupMessage(messageBuilder, groupId);
 722     }
 723
 724     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 725             SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
 726     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 727         final var g = getGroupForSending(groupId);
 728
 729         GroupUtils.setGroupContext(messageBuilder, g);
 730         messageBuilder.withExpiration(g.getMessageExpirationTime());
 731
 732         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfRecipientId()));
 733     }
 734
 735     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(GroupId groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 736         SignalServiceDataMessage.Builder messageBuilder;
 737
 738         final var g = getGroupForUpdating(groupId);
 739         if (g instanceof GroupInfoV1) {
 740             var groupInfoV1 = (GroupInfoV1) g;
 741             var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT).withId(groupId.serialize()).build();
 742             messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 743             groupInfoV1.removeMember(account.getSelfRecipientId());
 744             account.getGroupStore().updateGroup(groupInfoV1);
 745         } else {
 746             final var groupInfoV2 = (GroupInfoV2) g;
 747             final var groupGroupChangePair = groupHelper.leaveGroup(groupInfoV2);
 748             groupInfoV2.setGroup(groupGroupChangePair.first(), this::resolveRecipient);
 749             messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 750             account.getGroupStore().updateGroup(groupInfoV2);
 751         }
 752
 753         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfRecipientId()));
 754     }
 755
 756     public Pair<GroupId, List<SendMessageResult>> updateGroup(
 757             GroupId groupId, String name, List<String> members, File avatarFile
 758     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 759         return sendUpdateGroupMessage(groupId,
 760                 name,
 761                 members == null ? null : getSignalServiceAddresses(members),
 762                 avatarFile);
 763     }
 764
 765     private Pair<GroupId, List<SendMessageResult>> sendUpdateGroupMessage(
 766             GroupId groupId, String name, Set<RecipientId> members, File avatarFile
 767     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 768         GroupInfo g;
 769         SignalServiceDataMessage.Builder messageBuilder;
 770         if (groupId == null) {
 771             // Create new group
 772             var gv2Pair = groupHelper.createGroupV2(name == null ? "" : name,
 773                     members == null ? Set.of() : members,
 774                     avatarFile);
 775             if (gv2Pair == null) {
 776                 var gv1 = new GroupInfoV1(GroupIdV1.createRandom());
 777                 gv1.addMembers(List.of(account.getSelfRecipientId()));
 778                 updateGroupV1(gv1, name, members, avatarFile);
 779                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 780                 g = gv1;
 781             } else {
 782                 final var gv2 = gv2Pair.first();
 783                 final var decryptedGroup = gv2Pair.second();
 784
 785                 gv2.setGroup(decryptedGroup, this::resolveRecipient);
 786                 if (avatarFile != null) {
 787                     avatarStore.storeGroupAvatar(gv2.getGroupId(),
 788                             outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 789                 }
 790                 messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 791                 g = gv2;
 792             }
 793         } else {
 794             var group = getGroupForUpdating(groupId);
 795             if (group instanceof GroupInfoV2) {
 796                 final var groupInfoV2 = (GroupInfoV2) group;
 797
 798                 Pair<Long, List<SendMessageResult>> result = null;
 799                 if (groupInfoV2.isPendingMember(account.getSelfRecipientId())) {
 800                     var groupGroupChangePair = groupHelper.acceptInvite(groupInfoV2);
 801                     result = sendUpdateGroupMessage(groupInfoV2,
 802                             groupGroupChangePair.first(),
 803                             groupGroupChangePair.second());
 804                 }
 805
 806                 if (members != null) {
 807                     final var newMembers = new HashSet<>(members);
 808                     newMembers.removeAll(group.getMembers());
 809                     if (newMembers.size() > 0) {
 810                         var groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2, newMembers);
 811                         result = sendUpdateGroupMessage(groupInfoV2,
 812                                 groupGroupChangePair.first(),
 813                                 groupGroupChangePair.second());
 814                     }
 815                 }
 816                 if (result == null || name != null || avatarFile != null) {
 817                     var groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2, name, avatarFile);
 818                     if (avatarFile != null) {
 819                         avatarStore.storeGroupAvatar(groupInfoV2.getGroupId(),
 820                                 outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 821                     }
 822                     result = sendUpdateGroupMessage(groupInfoV2,
 823                             groupGroupChangePair.first(),
 824                             groupGroupChangePair.second());
 825                 }
 826
 827                 return new Pair<>(group.getGroupId(), result.second());
 828             } else {
 829                 var gv1 = (GroupInfoV1) group;
 830                 updateGroupV1(gv1, name, members, avatarFile);
 831                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 832                 g = gv1;
 833             }
 834         }
 835
 836         account.getGroupStore().updateGroup(g);
 837
 838         final var result = sendMessage(messageBuilder,
 839                 g.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 840         return new Pair<>(g.getGroupId(), result.second());
 841     }
 842
 843     private void updateGroupV1(
 844             final GroupInfoV1 g, final String name, final Collection<RecipientId> members, final File avatarFile
 845     ) throws IOException {
 846         if (name != null) {
 847             g.name = name;
 848         }
 849
 850         if (members != null) {
 851             final var newMemberAddresses = members.stream()
 852                     .filter(member -> !g.isMember(member))
 853                     .map(this::resolveSignalServiceAddress)
 854                     .collect(Collectors.toList());
 855             final var newE164Members = new HashSet<String>();
 856             for (var member : newMemberAddresses) {
 857                 if (!member.getNumber().isPresent()) {
 858                     continue;
 859                 }
 860                 newE164Members.add(member.getNumber().get());
 861             }
 862
 863             final var registeredUsers = getRegisteredUsers(newE164Members);
 864             if (registeredUsers.size() != newE164Members.size()) {
 865                 // Some of the new members are not registered on Signal
 866                 newE164Members.removeAll(registeredUsers.keySet());
 867                 throw new IOException("Failed to add members "
 868                         + String.join(", ", newE164Members)
 869                         + " to group: Not registered on Signal");
 870             }
 871
 872             g.addMembers(members);
 873         }
 874
 875         if (avatarFile != null) {
 876             avatarStore.storeGroupAvatar(g.getGroupId(),
 877                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 878         }
 879     }
 880
 881     public Pair<GroupId, List<SendMessageResult>> joinGroup(
 882             GroupInviteLinkUrl inviteLinkUrl
 883     ) throws IOException, GroupLinkNotActiveException {
 884         return sendJoinGroupMessage(inviteLinkUrl);
 885     }
 886
 887     private Pair<GroupId, List<SendMessageResult>> sendJoinGroupMessage(
 888             GroupInviteLinkUrl inviteLinkUrl
 889     ) throws IOException, GroupLinkNotActiveException {
 890         final var groupJoinInfo = groupHelper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
 891                 inviteLinkUrl.getPassword());
 892         final var groupChange = groupHelper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
 893                 inviteLinkUrl.getPassword(),
 894                 groupJoinInfo);
 895         final var group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
 896                 groupJoinInfo.getRevision() + 1,
 897                 groupChange.toByteArray());
 898
 899         if (group.getGroup() == null) {
 900             // Only requested member, can't send update to group members
 901             return new Pair<>(group.getGroupId(), List.of());
 902         }
 903
 904         final var result = sendUpdateGroupMessage(group, group.getGroup(), groupChange);
 905
 906         return new Pair<>(group.getGroupId(), result.second());
 907     }
 908
 909     private static int currentTimeDays() {
 910         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
 911     }
 912
 913     private GroupsV2AuthorizationString getGroupAuthForToday(
 914             final GroupSecretParams groupSecretParams
 915     ) throws IOException {
 916         final var today = currentTimeDays();
 917         // Returns credentials for the next 7 days
 918         final var credentials = groupsV2Api.getCredentials(today);
 919         // TODO cache credentials until they expire
 920         var authCredentialResponse = credentials.get(today);
 921         try {
 922             return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
 923                     today,
 924                     groupSecretParams,
 925                     authCredentialResponse);
 926         } catch (VerificationFailedException e) {
 927             throw new IOException(e);
 928         }
 929     }
 930
 931     private Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 932             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
 933     ) throws IOException {
 934         group.setGroup(newDecryptedGroup, this::resolveRecipient);
 935         final var messageBuilder = getGroupUpdateMessageBuilder(group, groupChange.toByteArray());
 936         account.getGroupStore().updateGroup(group);
 937         return sendMessage(messageBuilder, group.getMembersIncludingPendingWithout(account.getSelfRecipientId()));
 938     }
 939
 940     Pair<Long, List<SendMessageResult>> sendGroupInfoMessage(
 941             GroupIdV1 groupId, SignalServiceAddress recipient
 942     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 943         GroupInfoV1 g;
 944         var group = getGroupForSending(groupId);
 945         if (!(group instanceof GroupInfoV1)) {
 946             throw new RuntimeException("Received an invalid group request for a v2 group!");
 947         }
 948         g = (GroupInfoV1) group;
 949
 950         if (!g.isMember(resolveRecipient(recipient))) {
 951             throw new NotAGroupMemberException(groupId, g.name);
 952         }
 953
 954         var messageBuilder = getGroupUpdateMessageBuilder(g);
 955
 956         // Send group message only to the recipient who requested it
 957         return sendMessage(messageBuilder, Set.of(resolveRecipient(recipient)));
 958     }
 959
 960     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
 961         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 962                 .withId(g.getGroupId().serialize())
 963                 .withName(g.name)
 964                 .withMembers(g.getMembers()
 965                         .stream()
 966                         .map(this::resolveSignalServiceAddress)
 967                         .collect(Collectors.toList()));
 968
 969         try {
 970             final var attachment = createGroupAvatarAttachment(g.getGroupId());
 971             if (attachment.isPresent()) {
 972                 group.withAvatar(attachment.get());
 973             }
 974         } catch (IOException e) {
 975             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
 976         }
 977
 978         return SignalServiceDataMessage.newBuilder()
 979                 .asGroupMessage(group.build())
 980                 .withExpiration(g.getMessageExpirationTime());
 981     }
 982
 983     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
 984         var group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
 985                 .withRevision(g.getGroup().getRevision())
 986                 .withSignedGroupChange(signedGroupChange);
 987         return SignalServiceDataMessage.newBuilder()
 988                 .asGroupMessage(group.build())
 989                 .withExpiration(g.getMessageExpirationTime());
 990     }
 991
 992     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
 993             GroupIdV1 groupId, SignalServiceAddress recipient
 994     ) throws IOException {
 995         var group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO).withId(groupId.serialize());
 996
 997         var messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group.build());
 998
 999         // Send group info request message to the recipient who sent us a message with this groupId
1000         return sendMessage(messageBuilder, Set.of(resolveRecipient(recipient)));
1001     }
1002
1003     void sendReceipt(
1004             SignalServiceAddress remoteAddress, long messageId
1005     ) throws IOException, UntrustedIdentityException {
1006         var receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
1007                 List.of(messageId),
1008                 System.currentTimeMillis());
1009
1010         createMessageSender().sendReceipt(remoteAddress,
1011                 unidentifiedAccessHelper.getAccessFor(resolveRecipient(remoteAddress)),
1012                 receiptMessage);
1013     }
1014
1015     public Pair<Long, List<SendMessageResult>> sendMessage(
1016             String messageText, List<String> attachments, List<String> recipients
1017     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
1018         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
1019         if (attachments != null) {
1020             var attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
1021
1022             // Upload attachments here, so we only upload once even for multiple recipients
1023             var messageSender = createMessageSender();
1024             var attachmentPointers = new ArrayList<SignalServiceAttachment>(attachmentStreams.size());
1025             for (var attachment : attachmentStreams) {
1026                 if (attachment.isStream()) {
1027                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
1028                 } else if (attachment.isPointer()) {
1029                     attachmentPointers.add(attachment.asPointer());
1030                 }
1031             }
1032
1033             messageBuilder.withAttachments(attachmentPointers);
1034         }
1035         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1036     }
1037
1038     public Pair<Long, SendMessageResult> sendSelfMessage(
1039             String messageText, List<String> attachments
1040     ) throws IOException, AttachmentInvalidException {
1041         final var messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
1042         if (attachments != null) {
1043             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
1044         }
1045         return sendSelfMessage(messageBuilder);
1046     }
1047
1048     public Pair<Long, List<SendMessageResult>> sendRemoteDeleteMessage(
1049             long targetSentTimestamp, List<String> recipients
1050     ) throws IOException, InvalidNumberException {
1051         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1052         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
1053         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1054     }
1055
1056     public Pair<Long, List<SendMessageResult>> sendGroupRemoteDeleteMessage(
1057             long targetSentTimestamp, GroupId groupId
1058     ) throws IOException, NotAGroupMemberException, GroupNotFoundException {
1059         var delete = new SignalServiceDataMessage.RemoteDelete(targetSentTimestamp);
1060         final var messageBuilder = SignalServiceDataMessage.newBuilder().withRemoteDelete(delete);
1061         return sendGroupMessage(messageBuilder, groupId);
1062     }
1063
1064     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
1065             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
1066     ) throws IOException, InvalidNumberException {
1067         var reaction = new SignalServiceDataMessage.Reaction(emoji,
1068                 remove,
1069                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
1070                 targetSentTimestamp);
1071         final var messageBuilder = SignalServiceDataMessage.newBuilder().withReaction(reaction);
1072         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1073     }
1074
1075     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1076         var messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
1077
1078         final var signalServiceAddresses = getSignalServiceAddresses(recipients);
1079         try {
1080             return sendMessage(messageBuilder, signalServiceAddresses);
1081         } catch (Exception e) {
1082             for (var address : signalServiceAddresses) {
1083                 handleEndSession(address);
1084             }
1085             account.save();
1086             throw e;
1087         }
1088     }
1089
1090     public String getContactName(String number) throws InvalidNumberException {
1091         var contact = account.getContactStore().getContact(canonicalizeAndResolveRecipient(number));
1092         return contact == null || contact.getName() == null ? "" : contact.getName();
1093     }
1094
1095     public void setContactName(String number, String name) throws InvalidNumberException {
1096         final var recipientId = canonicalizeAndResolveRecipient(number);
1097         var contact = account.getContactStore().getContact(recipientId);
1098         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1099         account.getContactStore().storeContact(recipientId, builder.withName(name).build());
1100         account.save();
1101     }
1102
1103     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
1104         setContactBlocked(canonicalizeAndResolveRecipient(number), blocked);
1105     }
1106
1107     private void setContactBlocked(RecipientId recipientId, boolean blocked) {
1108         var contact = account.getContactStore().getContact(recipientId);
1109         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1110         account.getContactStore().storeContact(recipientId, builder.withBlocked(blocked).build());
1111         account.save();
1112     }
1113
1114     public void setGroupBlocked(final GroupId groupId, final boolean blocked) throws GroupNotFoundException {
1115         var group = getGroup(groupId);
1116         if (group == null) {
1117             throw new GroupNotFoundException(groupId);
1118         }
1119
1120         group.setBlocked(blocked);
1121         account.getGroupStore().updateGroup(group);
1122         account.save();
1123     }
1124
1125     private void setExpirationTimer(RecipientId recipientId, int messageExpirationTimer) {
1126         var contact = account.getContactStore().getContact(recipientId);
1127         if (contact != null && contact.getMessageExpirationTime() == messageExpirationTimer) {
1128             return;
1129         }
1130         final var builder = contact == null ? Contact.newBuilder() : Contact.newBuilder(contact);
1131         account.getContactStore()
1132                 .storeContact(recipientId, builder.withMessageExpirationTime(messageExpirationTimer).build());
1133     }
1134
1135     private void sendExpirationTimerUpdate(RecipientId recipientId) throws IOException {
1136         final var messageBuilder = SignalServiceDataMessage.newBuilder().asExpirationUpdate();
1137         sendMessage(messageBuilder, Set.of(recipientId));
1138     }
1139
1140     /**
1141      * Change the expiration timer for a contact
1142      */
1143     public void setExpirationTimer(
1144             String number, int messageExpirationTimer
1145     ) throws IOException, InvalidNumberException {
1146         var recipientId = canonicalizeAndResolveRecipient(number);
1147         setExpirationTimer(recipientId, messageExpirationTimer);
1148         sendExpirationTimerUpdate(recipientId);
1149         account.save();
1150     }
1151
1152     /**
1153      * Change the expiration timer for a group
1154      */
1155     public void setExpirationTimer(GroupId groupId, int messageExpirationTimer) {
1156         var g = getGroup(groupId);
1157         if (g instanceof GroupInfoV1) {
1158             var groupInfoV1 = (GroupInfoV1) g;
1159             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1160             account.getGroupStore().updateGroup(groupInfoV1);
1161         } else {
1162             throw new RuntimeException("TODO Not implemented!");
1163         }
1164     }
1165
1166     /**
1167      * Upload the sticker pack from path.
1168      *
1169      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1170      * @return if successful, returns the URL to install the sticker pack in the signal app
1171      */
1172     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1173         var manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
1174
1175         var messageSender = createMessageSender();
1176
1177         var packKey = KeyUtils.createStickerUploadKey();
1178         var packId = messageSender.uploadStickerManifest(manifest, packKey);
1179
1180         var sticker = new Sticker(StickerPackId.deserialize(Hex.fromStringCondensed(packId)), packKey);
1181         account.getStickerStore().updateSticker(sticker);
1182         account.save();
1183
1184         try {
1185             return new URI("https",
1186                     "signal.art",
1187                     "/addstickers/",
1188                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1189                             Hex.toStringCondensed(packKey),
1190                             StandardCharsets.UTF_8)).toString();
1191         } catch (URISyntaxException e) {
1192             throw new AssertionError(e);
1193         }
1194     }
1195
1196     void requestSyncGroups() throws IOException {
1197         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1198                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1199                 .build();
1200         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1201         try {
1202             sendSyncMessage(message);
1203         } catch (UntrustedIdentityException e) {
1204             throw new AssertionError(e);
1205         }
1206     }
1207
1208     void requestSyncContacts() throws IOException {
1209         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1210                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1211                 .build();
1212         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1213         try {
1214             sendSyncMessage(message);
1215         } catch (UntrustedIdentityException e) {
1216             throw new AssertionError(e);
1217         }
1218     }
1219
1220     void requestSyncBlocked() throws IOException {
1221         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1222                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1223                 .build();
1224         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1225         try {
1226             sendSyncMessage(message);
1227         } catch (UntrustedIdentityException e) {
1228             throw new AssertionError(e);
1229         }
1230     }
1231
1232     void requestSyncConfiguration() throws IOException {
1233         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1234                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1235                 .build();
1236         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1237         try {
1238             sendSyncMessage(message);
1239         } catch (UntrustedIdentityException e) {
1240             throw new AssertionError(e);
1241         }
1242     }
1243
1244     void requestSyncKeys() throws IOException {
1245         var r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1246                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
1247                 .build();
1248         var message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1249         try {
1250             sendSyncMessage(message);
1251         } catch (UntrustedIdentityException e) {
1252             throw new AssertionError(e);
1253         }
1254     }
1255
1256     private byte[] getSenderCertificate() {
1257         // TODO support UUID capable sender certificates
1258         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1259         byte[] certificate;
1260         try {
1261             certificate = accountManager.getSenderCertificate();
1262         } catch (IOException e) {
1263             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1264             return null;
1265         }
1266         // TODO cache for a day
1267         return certificate;
1268     }
1269
1270     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1271         var messageSender = createMessageSender();
1272         messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1273     }
1274
1275     private Set<RecipientId> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1276         final var signalServiceAddresses = new HashSet<SignalServiceAddress>(numbers.size());
1277         final var addressesMissingUuid = new HashSet<SignalServiceAddress>();
1278
1279         for (var number : numbers) {
1280             final var resolvedAddress = canonicalizeAndResolveSignalServiceAddress(number);
1281             if (resolvedAddress.getUuid().isPresent()) {
1282                 signalServiceAddresses.add(resolvedAddress);
1283             } else {
1284                 addressesMissingUuid.add(resolvedAddress);
1285             }
1286         }
1287
1288         final var numbersMissingUuid = addressesMissingUuid.stream()
1289                 .map(a -> a.getNumber().get())
1290                 .collect(Collectors.toSet());
1291         Map<String, UUID> registeredUsers;
1292         try {
1293             registeredUsers = getRegisteredUsers(numbersMissingUuid);
1294         } catch (IOException e) {
1295             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1296             registeredUsers = Map.of();
1297         }
1298
1299         for (var address : addressesMissingUuid) {
1300             final var number = address.getNumber().get();
1301             if (registeredUsers.containsKey(number)) {
1302                 final var newAddress = resolveSignalServiceAddress(resolveRecipientTrusted(new SignalServiceAddress(
1303                         registeredUsers.get(number),
1304                         number)));
1305                 signalServiceAddresses.add(newAddress);
1306             } else {
1307                 signalServiceAddresses.add(address);
1308             }
1309         }
1310
1311         return signalServiceAddresses.stream().map(this::resolveRecipient).collect(Collectors.toSet());
1312     }
1313
1314     private Map<String, UUID> getRegisteredUsers(final Set<String> numbersMissingUuid) throws IOException {
1315         try {
1316             return accountManager.getRegisteredUsers(ServiceConfig.getIasKeyStore(),
1317                     numbersMissingUuid,
1318                     serviceEnvironmentConfig.getCdsMrenclave());
1319         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
1320             throw new IOException(e);
1321         }
1322     }
1323
1324     private Pair<Long, List<SendMessageResult>> sendMessage(
1325             SignalServiceDataMessage.Builder messageBuilder, Set<RecipientId> recipientIds
1326     ) throws IOException {
1327         final var timestamp = System.currentTimeMillis();
1328         messageBuilder.withTimestamp(timestamp);
1329         getOrCreateMessagePipe();
1330         getOrCreateUnidentifiedMessagePipe();
1331         SignalServiceDataMessage message = null;
1332         try {
1333             message = messageBuilder.build();
1334             if (message.getGroupContext().isPresent()) {
1335                 try {
1336                     var messageSender = createMessageSender();
1337                     final var isRecipientUpdate = false;
1338                     final var recipientIdList = new ArrayList<>(recipientIds);
1339                     final var addresses = recipientIdList.stream()
1340                             .map(this::resolveSignalServiceAddress)
1341                             .collect(Collectors.toList());
1342                     var result = messageSender.sendMessage(addresses,
1343                             unidentifiedAccessHelper.getAccessFor(recipientIdList),
1344                             isRecipientUpdate,
1345                             message);
1346
1347                     for (var r : result) {
1348                         if (r.getIdentityFailure() != null) {
1349                             account.getIdentityKeyStore().
1350                                     saveIdentity(resolveRecipient(r.getAddress()),
1351                                             r.getIdentityFailure().getIdentityKey(),
1352                                             new Date());
1353                         }
1354                     }
1355
1356                     return new Pair<>(timestamp, result);
1357                 } catch (UntrustedIdentityException e) {
1358                     return new Pair<>(timestamp, List.of());
1359                 }
1360             } else {
1361                 // Send to all individually, so sync messages are sent correctly
1362                 messageBuilder.withProfileKey(account.getProfileKey().serialize());
1363                 var results = new ArrayList<SendMessageResult>(recipientIds.size());
1364                 for (var recipientId : recipientIds) {
1365                     final var contact = account.getContactStore().getContact(recipientId);
1366                     final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
1367                     messageBuilder.withExpiration(expirationTime);
1368                     message = messageBuilder.build();
1369                     results.add(sendMessage(resolveSignalServiceAddress(recipientId), message));
1370                 }
1371                 return new Pair<>(timestamp, results);
1372             }
1373         } finally {
1374             if (message != null && message.isEndSession()) {
1375                 for (var recipient : recipientIds) {
1376                     handleEndSession(recipient);
1377                 }
1378             }
1379             account.save();
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         try {
1391             final var recipientId = account.getSelfRecipientId();
1392
1393             final var contact = account.getContactStore().getContact(recipientId);
1394             final var expirationTime = contact != null ? contact.getMessageExpirationTime() : 0;
1395             messageBuilder.withExpiration(expirationTime);
1396
1397             var message = messageBuilder.build();
1398             final var result = sendSelfMessage(message);
1399             return new Pair<>(timestamp, result);
1400         } finally {
1401             account.save();
1402         }
1403     }
1404
1405     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1406         var messageSender = createMessageSender();
1407
1408         var recipient = account.getSelfAddress();
1409
1410         final var unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(resolveRecipient(recipient));
1411         var transcript = new SentTranscriptMessage(Optional.of(recipient),
1412                 message.getTimestamp(),
1413                 message,
1414                 message.getExpiresInSeconds(),
1415                 Map.of(recipient, unidentifiedAccess.isPresent()),
1416                 false);
1417         var syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1418
1419         try {
1420             var startTime = System.currentTimeMillis();
1421             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1422             return SendMessageResult.success(recipient,
1423                     unidentifiedAccess.isPresent(),
1424                     false,
1425                     System.currentTimeMillis() - startTime);
1426         } catch (UntrustedIdentityException e) {
1427             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1428         }
1429     }
1430
1431     private SendMessageResult sendMessage(
1432             SignalServiceAddress address, SignalServiceDataMessage message
1433     ) throws IOException {
1434         var messageSender = createMessageSender();
1435
1436         try {
1437             return messageSender.sendMessage(address,
1438                     unidentifiedAccessHelper.getAccessFor(resolveRecipient(address)),
1439                     message);
1440         } catch (UntrustedIdentityException e) {
1441             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1442         }
1443     }
1444
1445     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1446         var cipher = new SignalServiceCipher(account.getSelfAddress(),
1447                 account.getSignalProtocolStore(),
1448                 certificateValidator);
1449         try {
1450             return cipher.decrypt(envelope);
1451         } catch (ProtocolUntrustedIdentityException e) {
1452             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1453                 throw (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1454             }
1455             throw new AssertionError(e);
1456         }
1457     }
1458
1459     private void handleEndSession(RecipientId recipientId) {
1460         account.getSessionStore().deleteAllSessions(recipientId);
1461     }
1462
1463     private List<HandleAction> handleSignalServiceDataMessage(
1464             SignalServiceDataMessage message,
1465             boolean isSync,
1466             SignalServiceAddress source,
1467             SignalServiceAddress destination,
1468             boolean ignoreAttachments
1469     ) {
1470         var actions = new ArrayList<HandleAction>();
1471         if (message.getGroupContext().isPresent()) {
1472             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1473                 var groupInfo = message.getGroupContext().get().getGroupV1().get();
1474                 var groupId = GroupId.v1(groupInfo.getGroupId());
1475                 var group = getGroup(groupId);
1476                 if (group == null || group instanceof GroupInfoV1) {
1477                     var groupV1 = (GroupInfoV1) group;
1478                     switch (groupInfo.getType()) {
1479                         case UPDATE: {
1480                             if (groupV1 == null) {
1481                                 groupV1 = new GroupInfoV1(groupId);
1482                             }
1483
1484                             if (groupInfo.getAvatar().isPresent()) {
1485                                 var avatar = groupInfo.getAvatar().get();
1486                                 downloadGroupAvatar(avatar, groupV1.getGroupId());
1487                             }
1488
1489                             if (groupInfo.getName().isPresent()) {
1490                                 groupV1.name = groupInfo.getName().get();
1491                             }
1492
1493                             if (groupInfo.getMembers().isPresent()) {
1494                                 groupV1.addMembers(groupInfo.getMembers()
1495                                         .get()
1496                                         .stream()
1497                                         .map(this::resolveRecipient)
1498                                         .collect(Collectors.toSet()));
1499                             }
1500
1501                             account.getGroupStore().updateGroup(groupV1);
1502                             break;
1503                         }
1504                         case DELIVER:
1505                             if (groupV1 == null && !isSync) {
1506                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1507                             }
1508                             break;
1509                         case QUIT: {
1510                             if (groupV1 != null) {
1511                                 groupV1.removeMember(resolveRecipient(source));
1512                                 account.getGroupStore().updateGroup(groupV1);
1513                             }
1514                             break;
1515                         }
1516                         case REQUEST_INFO:
1517                             if (groupV1 != null && !isSync) {
1518                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
1519                             }
1520                             break;
1521                     }
1522                 } else {
1523                     // Received a group v1 message for a v2 group
1524                 }
1525             }
1526             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1527                 final var groupContext = message.getGroupContext().get().getGroupV2().get();
1528                 final var groupMasterKey = groupContext.getMasterKey();
1529
1530                 getOrMigrateGroup(groupMasterKey,
1531                         groupContext.getRevision(),
1532                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1533             }
1534         }
1535
1536         final var conversationPartnerAddress = isSync ? destination : source;
1537         if (conversationPartnerAddress != null && message.isEndSession()) {
1538             handleEndSession(resolveRecipient(conversationPartnerAddress));
1539         }
1540         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1541             if (message.getGroupContext().isPresent()) {
1542                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1543                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1544                     var group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1545                     if (group != null) {
1546                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1547                             group.messageExpirationTime = message.getExpiresInSeconds();
1548                             account.getGroupStore().updateGroup(group);
1549                         }
1550                     }
1551                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1552                     // disappearing message timer already stored in the DecryptedGroup
1553                 }
1554             } else if (conversationPartnerAddress != null) {
1555                 setExpirationTimer(resolveRecipient(conversationPartnerAddress), message.getExpiresInSeconds());
1556             }
1557         }
1558         if (!ignoreAttachments) {
1559             if (message.getAttachments().isPresent()) {
1560                 for (var attachment : message.getAttachments().get()) {
1561                     downloadAttachment(attachment);
1562                 }
1563             }
1564             if (message.getSharedContacts().isPresent()) {
1565                 for (var contact : message.getSharedContacts().get()) {
1566                     if (contact.getAvatar().isPresent()) {
1567                         downloadAttachment(contact.getAvatar().get().getAttachment());
1568                     }
1569                 }
1570             }
1571         }
1572         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1573             final ProfileKey profileKey;
1574             try {
1575                 profileKey = new ProfileKey(message.getProfileKey().get());
1576             } catch (InvalidInputException e) {
1577                 throw new AssertionError(e);
1578             }
1579             if (source.matches(account.getSelfAddress())) {
1580                 this.account.setProfileKey(profileKey);
1581             }
1582             this.account.getProfileStore().storeProfileKey(resolveRecipient(source), profileKey);
1583         }
1584         if (message.getPreviews().isPresent()) {
1585             final var previews = message.getPreviews().get();
1586             for (var preview : previews) {
1587                 if (preview.getImage().isPresent()) {
1588                     downloadAttachment(preview.getImage().get());
1589                 }
1590             }
1591         }
1592         if (message.getQuote().isPresent()) {
1593             final var quote = message.getQuote().get();
1594
1595             for (var quotedAttachment : quote.getAttachments()) {
1596                 final var thumbnail = quotedAttachment.getThumbnail();
1597                 if (thumbnail != null) {
1598                     downloadAttachment(thumbnail);
1599                 }
1600             }
1601         }
1602         if (message.getSticker().isPresent()) {
1603             final var messageSticker = message.getSticker().get();
1604             final var stickerPackId = StickerPackId.deserialize(messageSticker.getPackId());
1605             var sticker = account.getStickerStore().getSticker(stickerPackId);
1606             if (sticker == null) {
1607                 sticker = new Sticker(stickerPackId, messageSticker.getPackKey());
1608                 account.getStickerStore().updateSticker(sticker);
1609             }
1610         }
1611         return actions;
1612     }
1613
1614     private GroupInfoV2 getOrMigrateGroup(
1615             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1616     ) {
1617         final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1618
1619         var groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1620         var groupInfo = getGroup(groupId);
1621         final GroupInfoV2 groupInfoV2;
1622         if (groupInfo instanceof GroupInfoV1) {
1623             // Received a v2 group message for a v1 group, we need to locally migrate the group
1624             account.getGroupStore().deleteGroupV1(((GroupInfoV1) groupInfo).getGroupId());
1625             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1626             logger.info("Locally migrated group {} to group v2, id: {}",
1627                     groupInfo.getGroupId().toBase64(),
1628                     groupInfoV2.getGroupId().toBase64());
1629         } else if (groupInfo instanceof GroupInfoV2) {
1630             groupInfoV2 = (GroupInfoV2) groupInfo;
1631         } else {
1632             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1633         }
1634
1635         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1636             DecryptedGroup group = null;
1637             if (signedGroupChange != null
1638                     && groupInfoV2.getGroup() != null
1639                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1640                 group = groupHelper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(), signedGroupChange, groupMasterKey);
1641             }
1642             if (group == null) {
1643                 group = groupHelper.getDecryptedGroup(groupSecretParams);
1644             }
1645             if (group != null) {
1646                 storeProfileKeysFromMembers(group);
1647                 final var avatar = group.getAvatar();
1648                 if (avatar != null && !avatar.isEmpty()) {
1649                     downloadGroupAvatar(groupId, groupSecretParams, avatar);
1650                 }
1651             }
1652             groupInfoV2.setGroup(group, this::resolveRecipient);
1653             account.getGroupStore().updateGroup(groupInfoV2);
1654         }
1655
1656         return groupInfoV2;
1657     }
1658
1659     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1660         for (var member : group.getMembersList()) {
1661             final var address = resolveRecipient(new SignalServiceAddress(UuidUtil.parseOrThrow(member.getUuid()
1662                     .toByteArray()), null));
1663             try {
1664                 account.getProfileStore()
1665                         .storeProfileKey(address, new ProfileKey(member.getProfileKey().toByteArray()));
1666             } catch (InvalidInputException ignored) {
1667             }
1668         }
1669     }
1670
1671     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1672         Set<HandleAction> queuedActions = new HashSet<>();
1673         for (var cachedMessage : account.getMessageCache().getCachedMessages()) {
1674             var actions = retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
1675             if (actions != null) {
1676                 queuedActions.addAll(actions);
1677             }
1678         }
1679         for (var action : queuedActions) {
1680             try {
1681                 action.execute(this);
1682             } catch (Throwable e) {
1683                 logger.warn("Message action failed.", e);
1684             }
1685         }
1686     }
1687
1688     private List<HandleAction> retryFailedReceivedMessage(
1689             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
1690     ) {
1691         var envelope = cachedMessage.loadEnvelope();
1692         if (envelope == null) {
1693             return null;
1694         }
1695         SignalServiceContent content = null;
1696         List<HandleAction> actions = null;
1697         if (!envelope.isReceipt()) {
1698             try {
1699                 content = decryptMessage(envelope);
1700             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1701                 if (!envelope.hasSource()) {
1702                     final var recipientId = resolveRecipient(((org.whispersystems.libsignal.UntrustedIdentityException) e)
1703                             .getName());
1704                     try {
1705                         account.getMessageCache().replaceSender(cachedMessage, recipientId);
1706                     } catch (IOException ioException) {
1707                         logger.warn("Failed to move cached message to recipient folder: {}", ioException.getMessage());
1708                     }
1709                 }
1710                 return null;
1711             } catch (Exception er) {
1712                 // All other errors are not recoverable, so delete the cached message
1713                 cachedMessage.delete();
1714                 return null;
1715             }
1716             actions = handleMessage(envelope, content, ignoreAttachments);
1717         }
1718         account.save();
1719         handler.handleMessage(envelope, content, null);
1720         cachedMessage.delete();
1721         return actions;
1722     }
1723
1724     public void receiveMessages(
1725             long timeout,
1726             TimeUnit unit,
1727             boolean returnOnTimeout,
1728             boolean ignoreAttachments,
1729             ReceiveMessageHandler handler
1730     ) throws IOException {
1731         retryFailedReceivedMessages(handler, ignoreAttachments);
1732
1733         Set<HandleAction> queuedActions = null;
1734
1735         final var messagePipe = getOrCreateMessagePipe();
1736
1737         var hasCaughtUpWithOldMessages = false;
1738
1739         while (true) {
1740             SignalServiceEnvelope envelope;
1741             SignalServiceContent content = null;
1742             Exception exception = null;
1743             final CachedMessage[] cachedMessage = {null};
1744             try {
1745                 var result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1746                     final var recipientId = envelope1.hasSource()
1747                             ? resolveRecipient(envelope1.getSourceIdentifier())
1748                             : null;
1749                     // store message on disk, before acknowledging receipt to the server
1750                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1, recipientId);
1751                 });
1752                 if (result.isPresent()) {
1753                     envelope = result.get();
1754                 } else {
1755                     // Received indicator that server queue is empty
1756                     hasCaughtUpWithOldMessages = true;
1757
1758                     if (queuedActions != null) {
1759                         for (var action : queuedActions) {
1760                             try {
1761                                 action.execute(this);
1762                             } catch (Throwable e) {
1763                                 logger.warn("Message action failed.", e);
1764                             }
1765                         }
1766                         account.save();
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             account.save();
1807             if (isMessageBlocked(envelope, content)) {
1808                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
1809             } else if (notAGroupMember) {
1810                 logger.info("Ignoring a message from a non group member: {}", envelope.getTimestamp());
1811             } else {
1812                 handler.handleMessage(envelope, content, exception);
1813             }
1814             if (cachedMessage[0] != null) {
1815                 if (exception instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1816                     final var recipientId = resolveRecipient(((org.whispersystems.libsignal.UntrustedIdentityException) exception)
1817                             .getName());
1818                     queuedActions.add(new RetrieveProfileAction(recipientId));
1819                     if (!envelope.hasSource()) {
1820                         try {
1821                             cachedMessage[0] = account.getMessageCache().replaceSender(cachedMessage[0], recipientId);
1822                         } catch (IOException ioException) {
1823                             logger.warn("Failed to move cached message to recipient folder: {}",
1824                                     ioException.getMessage());
1825                         }
1826                     }
1827                 } else {
1828                     cachedMessage[0].delete();
1829                 }
1830             }
1831         }
1832     }
1833
1834     private boolean isMessageBlocked(
1835             SignalServiceEnvelope envelope, SignalServiceContent content
1836     ) {
1837         SignalServiceAddress source;
1838         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1839             source = envelope.getSourceAddress();
1840         } else if (content != null) {
1841             source = content.getSender();
1842         } else {
1843             return false;
1844         }
1845         final var recipientId = resolveRecipient(source);
1846         if (isContactBlocked(recipientId)) {
1847             return true;
1848         }
1849
1850         if (content != null && content.getDataMessage().isPresent()) {
1851             var message = content.getDataMessage().get();
1852             if (message.getGroupContext().isPresent()) {
1853                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1854                 var group = getGroup(groupId);
1855                 if (group != null && group.isBlocked()) {
1856                     return true;
1857                 }
1858             }
1859         }
1860         return false;
1861     }
1862
1863     public boolean isContactBlocked(final String identifier) throws InvalidNumberException {
1864         final var recipientId = canonicalizeAndResolveRecipient(identifier);
1865         return isContactBlocked(recipientId);
1866     }
1867
1868     private boolean isContactBlocked(final RecipientId recipientId) {
1869         var sourceContact = account.getContactStore().getContact(recipientId);
1870         return sourceContact != null && sourceContact.isBlocked();
1871     }
1872
1873     private boolean isNotAGroupMember(
1874             SignalServiceEnvelope envelope, SignalServiceContent content
1875     ) {
1876         SignalServiceAddress source;
1877         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1878             source = envelope.getSourceAddress();
1879         } else if (content != null) {
1880             source = content.getSender();
1881         } else {
1882             return false;
1883         }
1884
1885         if (content != null && content.getDataMessage().isPresent()) {
1886             var message = content.getDataMessage().get();
1887             if (message.getGroupContext().isPresent()) {
1888                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1889                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
1890                     if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
1891                         return false;
1892                     }
1893                 }
1894                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1895                 var group = getGroup(groupId);
1896                 if (group != null && !group.isMember(resolveRecipient(source))) {
1897                     return true;
1898                 }
1899             }
1900         }
1901         return false;
1902     }
1903
1904     private List<HandleAction> handleMessage(
1905             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
1906     ) {
1907         var actions = new ArrayList<HandleAction>();
1908         if (content != null) {
1909             final SignalServiceAddress sender;
1910             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1911                 sender = envelope.getSourceAddress();
1912             } else {
1913                 sender = content.getSender();
1914             }
1915
1916             if (content.getDataMessage().isPresent()) {
1917                 var message = content.getDataMessage().get();
1918
1919                 if (content.isNeedsReceipt()) {
1920                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1921                 }
1922
1923                 actions.addAll(handleSignalServiceDataMessage(message,
1924                         false,
1925                         sender,
1926                         account.getSelfAddress(),
1927                         ignoreAttachments));
1928             }
1929             if (content.getSyncMessage().isPresent()) {
1930                 account.setMultiDevice(true);
1931                 var syncMessage = content.getSyncMessage().get();
1932                 if (syncMessage.getSent().isPresent()) {
1933                     var message = syncMessage.getSent().get();
1934                     final var destination = message.getDestination().orNull();
1935                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
1936                             true,
1937                             sender,
1938                             destination,
1939                             ignoreAttachments));
1940                 }
1941                 if (syncMessage.getRequest().isPresent() && account.isMasterDevice()) {
1942                     var rm = syncMessage.getRequest().get();
1943                     if (rm.isContactsRequest()) {
1944                         actions.add(SendSyncContactsAction.create());
1945                     }
1946                     if (rm.isGroupsRequest()) {
1947                         actions.add(SendSyncGroupsAction.create());
1948                     }
1949                     if (rm.isBlockedListRequest()) {
1950                         actions.add(SendSyncBlockedListAction.create());
1951                     }
1952                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
1953                 }
1954                 if (syncMessage.getGroups().isPresent()) {
1955                     File tmpFile = null;
1956                     try {
1957                         tmpFile = IOUtils.createTempFile();
1958                         final var groupsMessage = syncMessage.getGroups().get();
1959                         try (var attachmentAsStream = retrieveAttachmentAsStream(groupsMessage.asPointer(), tmpFile)) {
1960                             var s = new DeviceGroupsInputStream(attachmentAsStream);
1961                             DeviceGroup g;
1962                             while ((g = s.read()) != null) {
1963                                 var syncGroup = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(g.getId()));
1964                                 if (syncGroup != null) {
1965                                     if (g.getName().isPresent()) {
1966                                         syncGroup.name = g.getName().get();
1967                                     }
1968                                     syncGroup.addMembers(g.getMembers()
1969                                             .stream()
1970                                             .map(this::resolveRecipient)
1971                                             .collect(Collectors.toSet()));
1972                                     if (!g.isActive()) {
1973                                         syncGroup.removeMember(account.getSelfRecipientId());
1974                                     } else {
1975                                         // Add ourself to the member set as it's marked as active
1976                                         syncGroup.addMembers(List.of(account.getSelfRecipientId()));
1977                                     }
1978                                     syncGroup.blocked = g.isBlocked();
1979                                     if (g.getColor().isPresent()) {
1980                                         syncGroup.color = g.getColor().get();
1981                                     }
1982
1983                                     if (g.getAvatar().isPresent()) {
1984                                         downloadGroupAvatar(g.getAvatar().get(), syncGroup.getGroupId());
1985                                     }
1986                                     syncGroup.archived = g.isArchived();
1987                                     account.getGroupStore().updateGroup(syncGroup);
1988                                 }
1989                             }
1990                         }
1991                     } catch (Exception e) {
1992                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
1993                                 tmpFile,
1994                                 e.getMessage());
1995                     } finally {
1996                         if (tmpFile != null) {
1997                             try {
1998                                 Files.delete(tmpFile.toPath());
1999                             } catch (IOException e) {
2000                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
2001                                         tmpFile,
2002                                         e.getMessage());
2003                             }
2004                         }
2005                     }
2006                 }
2007                 if (syncMessage.getBlockedList().isPresent()) {
2008                     final var blockedListMessage = syncMessage.getBlockedList().get();
2009                     for (var address : blockedListMessage.getAddresses()) {
2010                         setContactBlocked(resolveRecipient(address), true);
2011                     }
2012                     for (var groupId : blockedListMessage.getGroupIds()
2013                             .stream()
2014                             .map(GroupId::unknownVersion)
2015                             .collect(Collectors.toSet())) {
2016                         try {
2017                             setGroupBlocked(groupId, true);
2018                         } catch (GroupNotFoundException e) {
2019                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
2020                                     groupId.toBase64());
2021                         }
2022                     }
2023                 }
2024                 if (syncMessage.getContacts().isPresent()) {
2025                     File tmpFile = null;
2026                     try {
2027                         tmpFile = IOUtils.createTempFile();
2028                         final var contactsMessage = syncMessage.getContacts().get();
2029                         try (var attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
2030                                 .asPointer(), tmpFile)) {
2031                             var s = new DeviceContactsInputStream(attachmentAsStream);
2032                             DeviceContact c;
2033                             while ((c = s.read()) != null) {
2034                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
2035                                     account.setProfileKey(c.getProfileKey().get());
2036                                 }
2037                                 final var recipientId = resolveRecipientTrusted(c.getAddress());
2038                                 var contact = account.getContactStore().getContact(recipientId);
2039                                 final var builder = contact == null
2040                                         ? Contact.newBuilder()
2041                                         : Contact.newBuilder(contact);
2042                                 if (c.getName().isPresent()) {
2043                                     builder.withName(c.getName().get());
2044                                 }
2045                                 if (c.getColor().isPresent()) {
2046                                     builder.withColor(c.getColor().get());
2047                                 }
2048                                 if (c.getProfileKey().isPresent()) {
2049                                     account.getProfileStore().storeProfileKey(recipientId, c.getProfileKey().get());
2050                                 }
2051                                 if (c.getVerified().isPresent()) {
2052                                     final var verifiedMessage = c.getVerified().get();
2053                                     account.getIdentityKeyStore()
2054                                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2055                                                     verifiedMessage.getIdentityKey(),
2056                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2057                                 }
2058                                 if (c.getExpirationTimer().isPresent()) {
2059                                     builder.withMessageExpirationTime(c.getExpirationTimer().get());
2060                                 }
2061                                 builder.withBlocked(c.isBlocked());
2062                                 builder.withArchived(c.isArchived());
2063                                 account.getContactStore().storeContact(recipientId, builder.build());
2064
2065                                 if (c.getAvatar().isPresent()) {
2066                                     downloadContactAvatar(c.getAvatar().get(), c.getAddress());
2067                                 }
2068                             }
2069                         }
2070                     } catch (Exception e) {
2071                         logger.warn("Failed to handle received sync contacts “{}”, ignoring: {}",
2072                                 tmpFile,
2073                                 e.getMessage());
2074                     } finally {
2075                         if (tmpFile != null) {
2076                             try {
2077                                 Files.delete(tmpFile.toPath());
2078                             } catch (IOException e) {
2079                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2080                                         tmpFile,
2081                                         e.getMessage());
2082                             }
2083                         }
2084                     }
2085                 }
2086                 if (syncMessage.getVerified().isPresent()) {
2087                     final var verifiedMessage = syncMessage.getVerified().get();
2088                     account.getIdentityKeyStore()
2089                             .setIdentityTrustLevel(resolveRecipientTrusted(verifiedMessage.getDestination()),
2090                                     verifiedMessage.getIdentityKey(),
2091                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2092                 }
2093                 if (syncMessage.getStickerPackOperations().isPresent()) {
2094                     final var stickerPackOperationMessages = syncMessage.getStickerPackOperations().get();
2095                     for (var m : stickerPackOperationMessages) {
2096                         if (!m.getPackId().isPresent()) {
2097                             continue;
2098                         }
2099                         final var stickerPackId = StickerPackId.deserialize(m.getPackId().get());
2100                         var sticker = account.getStickerStore().getSticker(stickerPackId);
2101                         if (sticker == null) {
2102                             if (!m.getPackKey().isPresent()) {
2103                                 continue;
2104                             }
2105                             sticker = new Sticker(stickerPackId, m.getPackKey().get());
2106                         }
2107                         sticker.setInstalled(!m.getType().isPresent()
2108                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2109                         account.getStickerStore().updateSticker(sticker);
2110                     }
2111                 }
2112                 if (syncMessage.getFetchType().isPresent()) {
2113                     switch (syncMessage.getFetchType().get()) {
2114                         case LOCAL_PROFILE:
2115                             getRecipientProfile(account.getSelfRecipientId(), true);
2116                         case STORAGE_MANIFEST:
2117                             // TODO
2118                     }
2119                 }
2120                 if (syncMessage.getKeys().isPresent()) {
2121                     final var keysMessage = syncMessage.getKeys().get();
2122                     if (keysMessage.getStorageService().isPresent()) {
2123                         final var storageKey = keysMessage.getStorageService().get();
2124                         account.setStorageKey(storageKey);
2125                     }
2126                 }
2127                 if (syncMessage.getConfiguration().isPresent()) {
2128                     // TODO
2129                 }
2130             }
2131         }
2132         return actions;
2133     }
2134
2135     private void downloadContactAvatar(SignalServiceAttachment avatar, SignalServiceAddress address) {
2136         try {
2137             avatarStore.storeContactAvatar(address, outputStream -> retrieveAttachment(avatar, outputStream));
2138         } catch (IOException e) {
2139             logger.warn("Failed to download avatar for contact {}, ignoring: {}", address, e.getMessage());
2140         }
2141     }
2142
2143     private void downloadGroupAvatar(SignalServiceAttachment avatar, GroupId groupId) {
2144         try {
2145             avatarStore.storeGroupAvatar(groupId, outputStream -> retrieveAttachment(avatar, outputStream));
2146         } catch (IOException e) {
2147             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2148         }
2149     }
2150
2151     private void downloadGroupAvatar(GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey) {
2152         try {
2153             avatarStore.storeGroupAvatar(groupId,
2154                     outputStream -> retrieveGroupV2Avatar(groupSecretParams, cdnKey, outputStream));
2155         } catch (IOException e) {
2156             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2157         }
2158     }
2159
2160     private void downloadProfileAvatar(
2161             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2162     ) {
2163         try {
2164             avatarStore.storeProfileAvatar(address,
2165                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
2166         } catch (Throwable e) {
2167             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
2168         }
2169     }
2170
2171     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2172         return attachmentStore.getAttachmentFile(attachmentId);
2173     }
2174
2175     private void downloadAttachment(final SignalServiceAttachment attachment) {
2176         if (!attachment.isPointer()) {
2177             logger.warn("Invalid state, can't store an attachment stream.");
2178         }
2179
2180         var pointer = attachment.asPointer();
2181         if (pointer.getPreview().isPresent()) {
2182             final var preview = pointer.getPreview().get();
2183             try {
2184                 attachmentStore.storeAttachmentPreview(pointer.getRemoteId(),
2185                         outputStream -> outputStream.write(preview, 0, preview.length));
2186             } catch (IOException e) {
2187                 logger.warn("Failed to download attachment preview, ignoring: {}", e.getMessage());
2188             }
2189         }
2190
2191         try {
2192             attachmentStore.storeAttachment(pointer.getRemoteId(),
2193                     outputStream -> retrieveAttachmentPointer(pointer, outputStream));
2194         } catch (IOException e) {
2195             logger.warn("Failed to download attachment ({}), ignoring: {}", pointer.getRemoteId(), e.getMessage());
2196         }
2197     }
2198
2199     private void retrieveGroupV2Avatar(
2200             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
2201     ) throws IOException {
2202         var groupOperations = groupsV2Operations.forGroup(groupSecretParams);
2203
2204         var tmpFile = IOUtils.createTempFile();
2205         try (InputStream input = messageReceiver.retrieveGroupsV2ProfileAvatar(cdnKey,
2206                 tmpFile,
2207                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2208             var encryptedData = IOUtils.readFully(input);
2209
2210             var decryptedData = groupOperations.decryptAvatar(encryptedData);
2211             outputStream.write(decryptedData);
2212         } finally {
2213             try {
2214                 Files.delete(tmpFile.toPath());
2215             } catch (IOException e) {
2216                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2217                         tmpFile,
2218                         e.getMessage());
2219             }
2220         }
2221     }
2222
2223     private void retrieveProfileAvatar(
2224             String avatarPath, ProfileKey profileKey, OutputStream outputStream
2225     ) throws IOException {
2226         var tmpFile = IOUtils.createTempFile();
2227         try (var input = messageReceiver.retrieveProfileAvatar(avatarPath,
2228                 tmpFile,
2229                 profileKey,
2230                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2231             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2232             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2233         } finally {
2234             try {
2235                 Files.delete(tmpFile.toPath());
2236             } catch (IOException e) {
2237                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2238                         tmpFile,
2239                         e.getMessage());
2240             }
2241         }
2242     }
2243
2244     private void retrieveAttachment(
2245             final SignalServiceAttachment attachment, final OutputStream outputStream
2246     ) throws IOException {
2247         if (attachment.isPointer()) {
2248             var pointer = attachment.asPointer();
2249             retrieveAttachmentPointer(pointer, outputStream);
2250         } else {
2251             var stream = attachment.asStream();
2252             IOUtils.copyStream(stream.getInputStream(), outputStream);
2253         }
2254     }
2255
2256     private void retrieveAttachmentPointer(
2257             SignalServiceAttachmentPointer pointer, OutputStream outputStream
2258     ) throws IOException {
2259         var tmpFile = IOUtils.createTempFile();
2260         try (var input = retrieveAttachmentAsStream(pointer, tmpFile)) {
2261             IOUtils.copyStream(input, outputStream);
2262         } catch (MissingConfigurationException | InvalidMessageException e) {
2263             throw new IOException(e);
2264         } finally {
2265             try {
2266                 Files.delete(tmpFile.toPath());
2267             } catch (IOException e) {
2268                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2269                         tmpFile,
2270                         e.getMessage());
2271             }
2272         }
2273     }
2274
2275     private InputStream retrieveAttachmentAsStream(
2276             SignalServiceAttachmentPointer pointer, File tmpFile
2277     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2278         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2279     }
2280
2281     void sendGroups() throws IOException, UntrustedIdentityException {
2282         var groupsFile = IOUtils.createTempFile();
2283
2284         try {
2285             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2286                 var out = new DeviceGroupsOutputStream(fos);
2287                 for (var record : getGroups()) {
2288                     if (record instanceof GroupInfoV1) {
2289                         var groupInfo = (GroupInfoV1) record;
2290                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2291                                 Optional.fromNullable(groupInfo.name),
2292                                 groupInfo.getMembers()
2293                                         .stream()
2294                                         .map(this::resolveSignalServiceAddress)
2295                                         .collect(Collectors.toList()),
2296                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2297                                 groupInfo.isMember(account.getSelfRecipientId()),
2298                                 Optional.of(groupInfo.messageExpirationTime),
2299                                 Optional.fromNullable(groupInfo.color),
2300                                 groupInfo.blocked,
2301                                 Optional.absent(),
2302                                 groupInfo.archived));
2303                     }
2304                 }
2305             }
2306
2307             if (groupsFile.exists() && groupsFile.length() > 0) {
2308                 try (var groupsFileStream = new FileInputStream(groupsFile)) {
2309                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2310                             .withStream(groupsFileStream)
2311                             .withContentType("application/octet-stream")
2312                             .withLength(groupsFile.length())
2313                             .build();
2314
2315                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2316                 }
2317             }
2318         } finally {
2319             try {
2320                 Files.delete(groupsFile.toPath());
2321             } catch (IOException e) {
2322                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2323             }
2324         }
2325     }
2326
2327     public void sendContacts() throws IOException, UntrustedIdentityException {
2328         var contactsFile = IOUtils.createTempFile();
2329
2330         try {
2331             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2332                 var out = new DeviceContactsOutputStream(fos);
2333                 for (var contactPair : account.getContactStore().getContacts()) {
2334                     final var recipientId = contactPair.first();
2335                     final var contact = contactPair.second();
2336                     final var address = resolveSignalServiceAddress(recipientId);
2337
2338                     var currentIdentity = account.getIdentityKeyStore().getIdentity(recipientId);
2339                     VerifiedMessage verifiedMessage = null;
2340                     if (currentIdentity != null) {
2341                         verifiedMessage = new VerifiedMessage(address,
2342                                 currentIdentity.getIdentityKey(),
2343                                 currentIdentity.getTrustLevel().toVerifiedState(),
2344                                 currentIdentity.getDateAdded().getTime());
2345                     }
2346
2347                     var profileKey = account.getProfileStore().getProfileKey(recipientId);
2348                     out.write(new DeviceContact(address,
2349                             Optional.fromNullable(contact.getName()),
2350                             createContactAvatarAttachment(address),
2351                             Optional.fromNullable(contact.getColor()),
2352                             Optional.fromNullable(verifiedMessage),
2353                             Optional.fromNullable(profileKey),
2354                             contact.isBlocked(),
2355                             Optional.of(contact.getMessageExpirationTime()),
2356                             Optional.absent(),
2357                             contact.isArchived()));
2358                 }
2359
2360                 if (account.getProfileKey() != null) {
2361                     // Send our own profile key as well
2362                     out.write(new DeviceContact(account.getSelfAddress(),
2363                             Optional.absent(),
2364                             Optional.absent(),
2365                             Optional.absent(),
2366                             Optional.absent(),
2367                             Optional.of(account.getProfileKey()),
2368                             false,
2369                             Optional.absent(),
2370                             Optional.absent(),
2371                             false));
2372                 }
2373             }
2374
2375             if (contactsFile.exists() && contactsFile.length() > 0) {
2376                 try (var contactsFileStream = new FileInputStream(contactsFile)) {
2377                     var attachmentStream = SignalServiceAttachment.newStreamBuilder()
2378                             .withStream(contactsFileStream)
2379                             .withContentType("application/octet-stream")
2380                             .withLength(contactsFile.length())
2381                             .build();
2382
2383                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2384                 }
2385             }
2386         } finally {
2387             try {
2388                 Files.delete(contactsFile.toPath());
2389             } catch (IOException e) {
2390                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2391             }
2392         }
2393     }
2394
2395     void sendBlockedList() throws IOException, UntrustedIdentityException {
2396         var addresses = new ArrayList<SignalServiceAddress>();
2397         for (var record : account.getContactStore().getContacts()) {
2398             if (record.second().isBlocked()) {
2399                 addresses.add(resolveSignalServiceAddress(record.first()));
2400             }
2401         }
2402         var groupIds = new ArrayList<byte[]>();
2403         for (var record : getGroups()) {
2404             if (record.isBlocked()) {
2405                 groupIds.add(record.getGroupId().serialize());
2406             }
2407         }
2408         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2409     }
2410
2411     private void sendVerifiedMessage(
2412             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2413     ) throws IOException, UntrustedIdentityException {
2414         var verifiedMessage = new VerifiedMessage(destination,
2415                 identityKey,
2416                 trustLevel.toVerifiedState(),
2417                 System.currentTimeMillis());
2418         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2419     }
2420
2421     public List<Pair<RecipientId, Contact>> getContacts() {
2422         return account.getContactStore().getContacts();
2423     }
2424
2425     public String getContactOrProfileName(String number) throws InvalidNumberException {
2426         final var recipientId = canonicalizeAndResolveRecipient(number);
2427         final var recipient = account.getRecipientStore().getRecipient(recipientId);
2428         if (recipient == null) {
2429             return null;
2430         }
2431
2432         if (recipient.getContact() != null && !Util.isEmpty(recipient.getContact().getName())) {
2433             return recipient.getContact().getName();
2434         }
2435
2436         if (recipient.getProfile() != null && recipient.getProfile() != null) {
2437             return recipient.getProfile().getDisplayName();
2438         }
2439
2440         return null;
2441     }
2442
2443     public GroupInfo getGroup(GroupId groupId) {
2444         final var group = account.getGroupStore().getGroup(groupId);
2445         if (group instanceof GroupInfoV2 && ((GroupInfoV2) group).getGroup() == null) {
2446             final var groupSecretParams = GroupSecretParams.deriveFromMasterKey(((GroupInfoV2) group).getMasterKey());
2447             ((GroupInfoV2) group).setGroup(groupHelper.getDecryptedGroup(groupSecretParams), this::resolveRecipient);
2448             account.getGroupStore().updateGroup(group);
2449         }
2450         return group;
2451     }
2452
2453     public List<IdentityInfo> getIdentities() {
2454         return account.getIdentityKeyStore().getIdentities();
2455     }
2456
2457     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2458         final var identity = account.getIdentityKeyStore().getIdentity(canonicalizeAndResolveRecipient(number));
2459         return identity == null ? List.of() : List.of(identity);
2460     }
2461
2462     /**
2463      * Trust this the identity with this fingerprint
2464      *
2465      * @param name        username of the identity
2466      * @param fingerprint Fingerprint
2467      */
2468     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2469         var recipientId = canonicalizeAndResolveRecipient(name);
2470         return trustIdentity(recipientId,
2471                 identityKey -> Arrays.equals(identityKey.serialize(), fingerprint),
2472                 TrustLevel.TRUSTED_VERIFIED);
2473     }
2474
2475     /**
2476      * Trust this the identity with this safety number
2477      *
2478      * @param name         username of the identity
2479      * @param safetyNumber Safety number
2480      */
2481     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2482         var recipientId = canonicalizeAndResolveRecipient(name);
2483         var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2484         return trustIdentity(recipientId,
2485                 identityKey -> safetyNumber.equals(computeSafetyNumber(address, identityKey)),
2486                 TrustLevel.TRUSTED_VERIFIED);
2487     }
2488
2489     /**
2490      * Trust all keys of this identity without verification
2491      *
2492      * @param name username of the identity
2493      */
2494     public boolean trustIdentityAllKeys(String name) throws InvalidNumberException {
2495         var recipientId = canonicalizeAndResolveRecipient(name);
2496         return trustIdentity(recipientId, identityKey -> true, TrustLevel.TRUSTED_UNVERIFIED);
2497     }
2498
2499     private boolean trustIdentity(
2500             RecipientId recipientId, Function<IdentityKey, Boolean> verifier, TrustLevel trustLevel
2501     ) {
2502         var identity = account.getIdentityKeyStore().getIdentity(recipientId);
2503         if (identity == null) {
2504             return false;
2505         }
2506
2507         if (!verifier.apply(identity.getIdentityKey())) {
2508             return false;
2509         }
2510
2511         account.getIdentityKeyStore().setIdentityTrustLevel(recipientId, identity.getIdentityKey(), trustLevel);
2512         try {
2513             var address = account.getRecipientStore().resolveServiceAddress(recipientId);
2514             sendVerifiedMessage(address, identity.getIdentityKey(), trustLevel);
2515         } catch (IOException | UntrustedIdentityException e) {
2516             logger.warn("Failed to send verification sync message: {}", e.getMessage());
2517         }
2518
2519         return true;
2520     }
2521
2522     public String computeSafetyNumber(
2523             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2524     ) {
2525         return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
2526                 account.getSelfAddress(),
2527                 getIdentityKeyPair().getPublicKey(),
2528                 theirAddress,
2529                 theirIdentityKey);
2530     }
2531
2532     @Deprecated
2533     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2534         var canonicalizedNumber = UuidUtil.isUuid(identifier)
2535                 ? identifier
2536                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2537         return resolveSignalServiceAddress(canonicalizedNumber);
2538     }
2539
2540     @Deprecated
2541     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2542         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2543
2544         return resolveSignalServiceAddress(address);
2545     }
2546
2547     @Deprecated
2548     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2549         if (address.matches(account.getSelfAddress())) {
2550             return account.getSelfAddress();
2551         }
2552
2553         return account.getRecipientStore().resolveServiceAddress(address);
2554     }
2555
2556     public SignalServiceAddress resolveSignalServiceAddress(RecipientId recipientId) {
2557         return account.getRecipientStore().resolveServiceAddress(recipientId);
2558     }
2559
2560     public RecipientId canonicalizeAndResolveRecipient(String identifier) throws InvalidNumberException {
2561         var canonicalizedNumber = UuidUtil.isUuid(identifier)
2562                 ? identifier
2563                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2564
2565         return resolveRecipient(canonicalizedNumber);
2566     }
2567
2568     private RecipientId resolveRecipient(final String identifier) {
2569         var address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2570
2571         return resolveRecipient(address);
2572     }
2573
2574     public RecipientId resolveRecipient(SignalServiceAddress address) {
2575         return account.getRecipientStore().resolveRecipient(address);
2576     }
2577
2578     private RecipientId resolveRecipientTrusted(SignalServiceAddress address) {
2579         return account.getRecipientStore().resolveRecipientTrusted(address);
2580     }
2581
2582     @Override
2583     public void close() throws IOException {
2584         close(true);
2585     }
2586
2587     void close(boolean closeAccount) throws IOException {
2588         executor.shutdown();
2589
2590         if (messagePipe != null) {
2591             messagePipe.shutdown();
2592             messagePipe = null;
2593         }
2594
2595         if (unidentifiedMessagePipe != null) {
2596             unidentifiedMessagePipe.shutdown();
2597             unidentifiedMessagePipe = null;
2598         }
2599
2600         if (closeAccount && account != null) {
2601             account.close();
2602         }
2603         account = null;
2604     }
2605
2606     public interface ReceiveMessageHandler {
2607
2608         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2609     }
2610 }