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

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