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