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.GroupIdV2;
  25 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  26 import org.asamk.signal.manager.groups.GroupNotFoundException;
  27 import org.asamk.signal.manager.groups.GroupUtils;
  28 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  29 import org.asamk.signal.manager.helper.GroupHelper;
  30 import org.asamk.signal.manager.helper.PinHelper;
  31 import org.asamk.signal.manager.helper.ProfileHelper;
  32 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  33 import org.asamk.signal.manager.storage.SignalAccount;
  34 import org.asamk.signal.manager.storage.contacts.ContactInfo;
  35 import org.asamk.signal.manager.storage.groups.GroupInfo;
  36 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  37 import org.asamk.signal.manager.storage.groups.GroupInfoV2;
  38 import org.asamk.signal.manager.storage.messageCache.CachedMessage;
  39 import org.asamk.signal.manager.storage.profiles.SignalProfile;
  40 import org.asamk.signal.manager.storage.profiles.SignalProfileEntry;
  41 import org.asamk.signal.manager.storage.protocol.IdentityInfo;
  42 import org.asamk.signal.manager.storage.stickers.Sticker;
  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.storageservice.protos.groups.local.DecryptedGroupJoinInfo;
  64 import org.signal.storageservice.protos.groups.local.DecryptedMember;
  65 import org.signal.zkgroup.InvalidInputException;
  66 import org.signal.zkgroup.VerificationFailedException;
  67 import org.signal.zkgroup.auth.AuthCredentialResponse;
  68 import org.signal.zkgroup.groups.GroupMasterKey;
  69 import org.signal.zkgroup.groups.GroupSecretParams;
  70 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  71 import org.signal.zkgroup.profiles.ProfileKey;
  72 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  73 import org.slf4j.Logger;
  74 import org.slf4j.LoggerFactory;
  75 import org.whispersystems.libsignal.IdentityKey;
  76 import org.whispersystems.libsignal.IdentityKeyPair;
  77 import org.whispersystems.libsignal.InvalidKeyException;
  78 import org.whispersystems.libsignal.InvalidMessageException;
  79 import org.whispersystems.libsignal.InvalidVersionException;
  80 import org.whispersystems.libsignal.ecc.ECPublicKey;
  81 import org.whispersystems.libsignal.state.PreKeyRecord;
  82 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  83 import org.whispersystems.libsignal.util.Pair;
  84 import org.whispersystems.libsignal.util.guava.Optional;
  85 import org.whispersystems.signalservice.api.KeyBackupService;
  86 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  87 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  88 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  89 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  90 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  91 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  92 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  93 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  94 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  95 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
  96 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  97 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  98 import org.whispersystems.signalservice.api.kbs.MasterKey;
  99 import org.whispersystems.signalservice.api.messages.SendMessageResult;
 100 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
 101 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
 102 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
 103 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
 104 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
 105 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
 106 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
 107 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
 108 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
 109 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
 110 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
 111 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
 112 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 113 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 114 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 115 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 116 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 117 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 118 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 119 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 120 import org.whispersystems.signalservice.api.messages.multidevice.KeysMessage;
 121 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 122 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 123 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 124 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 125 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 126 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 127 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 128 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 129 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 130 import org.whispersystems.signalservice.api.storage.StorageKey;
 131 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 132 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
 133 import org.whispersystems.signalservice.api.util.SleepTimer;
 134 import org.whispersystems.signalservice.api.util.StreamDetails;
 135 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 136 import org.whispersystems.signalservice.api.util.UuidUtil;
 137 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 138 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 139 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 140 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 141 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 142 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 143 import org.whispersystems.signalservice.internal.util.Hex;
 144 import org.whispersystems.signalservice.internal.util.Util;
 145
 146 import java.io.Closeable;
 147 import java.io.File;
 148 import java.io.FileInputStream;
 149 import java.io.FileOutputStream;
 150 import java.io.IOException;
 151 import java.io.InputStream;
 152 import java.io.OutputStream;
 153 import java.net.URI;
 154 import java.net.URISyntaxException;
 155 import java.net.URLEncoder;
 156 import java.nio.charset.StandardCharsets;
 157 import java.nio.file.Files;
 158 import java.security.SignatureException;
 159 import java.util.ArrayList;
 160 import java.util.Arrays;
 161 import java.util.Collection;
 162 import java.util.Date;
 163 import java.util.HashMap;
 164 import java.util.HashSet;
 165 import java.util.List;
 166 import java.util.Map;
 167 import java.util.Set;
 168 import java.util.UUID;
 169 import java.util.concurrent.ExecutorService;
 170 import java.util.concurrent.TimeUnit;
 171 import java.util.concurrent.TimeoutException;
 172 import java.util.stream.Collectors;
 173
 174 import static org.asamk.signal.manager.config.ServiceConfig.capabilities;
 175
 176 public class Manager implements Closeable {
 177
 178     private final static Logger logger = LoggerFactory.getLogger(Manager.class);
 179
 180     private final CertificateValidator certificateValidator;
 181
 182     private final ServiceEnvironmentConfig serviceEnvironmentConfig;
 183     private final String userAgent;
 184
 185     private SignalAccount account;
 186     private final SignalServiceAccountManager accountManager;
 187     private final GroupsV2Api groupsV2Api;
 188     private final GroupsV2Operations groupsV2Operations;
 189     private final SignalServiceMessageReceiver messageReceiver;
 190     private final ClientZkProfileOperations clientZkProfileOperations;
 191
 192     private SignalServiceMessagePipe messagePipe = null;
 193     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 194
 195     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 196     private final ProfileHelper profileHelper;
 197     private final GroupHelper groupHelper;
 198     private final PinHelper pinHelper;
 199     private final AvatarStore avatarStore;
 200     private final AttachmentStore attachmentStore;
 201
 202     Manager(
 203             SignalAccount account,
 204             PathConfig pathConfig,
 205             ServiceEnvironmentConfig serviceEnvironmentConfig,
 206             String userAgent
 207     ) {
 208         this.account = account;
 209         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 210         this.certificateValidator = new CertificateValidator(serviceEnvironmentConfig.getUnidentifiedSenderTrustRoot());
 211         this.userAgent = userAgent;
 212         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 213                 serviceEnvironmentConfig.getSignalServiceConfiguration())) : null;
 214         final SleepTimer timer = new UptimeSleepTimer();
 215         this.accountManager = new SignalServiceAccountManager(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 216                 new DynamicCredentialsProvider(account.getUuid(),
 217                         account.getUsername(),
 218                         account.getPassword(),
 219                         account.getSignalingKey(),
 220                         account.getDeviceId()),
 221                 userAgent,
 222                 groupsV2Operations,
 223                 ServiceConfig.AUTOMATIC_NETWORK_RETRY,
 224                 timer);
 225         this.groupsV2Api = accountManager.getGroupsV2Api();
 226         final KeyBackupService keyBackupService = accountManager.getKeyBackupService(ServiceConfig.getIasKeyStore(),
 227                 serviceEnvironmentConfig.getKeyBackupConfig().getEnclaveName(),
 228                 serviceEnvironmentConfig.getKeyBackupConfig().getServiceId(),
 229                 serviceEnvironmentConfig.getKeyBackupConfig().getMrenclave(),
 230                 10);
 231
 232         this.pinHelper = new PinHelper(keyBackupService);
 233         this.clientZkProfileOperations = capabilities.isGv2()
 234                 ? ClientZkOperations.create(serviceEnvironmentConfig.getSignalServiceConfiguration())
 235                 .getProfileOperations()
 236                 : null;
 237         this.messageReceiver = new SignalServiceMessageReceiver(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 238                 account.getUuid(),
 239                 account.getUsername(),
 240                 account.getPassword(),
 241                 account.getDeviceId(),
 242                 account.getSignalingKey(),
 243                 userAgent,
 244                 null,
 245                 timer,
 246                 clientZkProfileOperations,
 247                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 248
 249         this.account.setResolver(this::resolveSignalServiceAddress);
 250
 251         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 252                 account.getProfileStore()::getProfileKey,
 253                 this::getRecipientProfile,
 254                 this::getSenderCertificate);
 255         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 256                 unidentifiedAccessHelper::getAccessFor,
 257                 unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
 258                 () -> messageReceiver);
 259         this.groupHelper = new GroupHelper(this::getRecipientProfileKeyCredential,
 260                 this::getRecipientProfile,
 261                 account::getSelfAddress,
 262                 groupsV2Operations,
 263                 groupsV2Api,
 264                 this::getGroupAuthForToday);
 265         this.avatarStore = new AvatarStore(pathConfig.getAvatarsPath());
 266         this.attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
 267     }
 268
 269     public String getUsername() {
 270         return account.getUsername();
 271     }
 272
 273     public SignalServiceAddress getSelfAddress() {
 274         return account.getSelfAddress();
 275     }
 276
 277     private IdentityKeyPair getIdentityKeyPair() {
 278         return account.getSignalProtocolStore().getIdentityKeyPair();
 279     }
 280
 281     public int getDeviceId() {
 282         return account.getDeviceId();
 283     }
 284
 285     public static Manager init(
 286             String username, File settingsPath, ServiceEnvironment serviceEnvironment, String userAgent
 287     ) throws IOException, NotRegisteredException {
 288         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 289
 290         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 291             throw new NotRegisteredException();
 292         }
 293
 294         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 295
 296         if (!account.isRegistered()) {
 297             throw new NotRegisteredException();
 298         }
 299
 300         final ServiceEnvironmentConfig serviceEnvironmentConfig = ServiceConfig.getServiceEnvironmentConfig(
 301                 serviceEnvironment,
 302                 userAgent);
 303
 304         return new Manager(account, pathConfig, serviceEnvironmentConfig, userAgent);
 305     }
 306
 307     public static List<String> getAllLocalUsernames(File settingsPath) {
 308         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 309         final File dataPath = pathConfig.getDataPath();
 310         final File[] files = dataPath.listFiles();
 311
 312         if (files == null) {
 313             return List.of();
 314         }
 315
 316         return Arrays.stream(files)
 317                 .filter(File::isFile)
 318                 .map(File::getName)
 319                 .filter(file -> PhoneNumberFormatter.isValidNumber(file, null))
 320                 .collect(Collectors.toList());
 321     }
 322
 323     public void checkAccountState() throws IOException {
 324         if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 325             refreshPreKeys();
 326             account.save();
 327         }
 328         if (account.getUuid() == null) {
 329             account.setUuid(accountManager.getOwnUuid());
 330             account.save();
 331         }
 332         updateAccountAttributes();
 333     }
 334
 335     /**
 336      * This is used for checking a set of phone numbers for registration on Signal
 337      *
 338      * @param numbers The set of phone number in question
 339      * @return A map of numbers to booleans. True if registered, false otherwise. Should never be null
 340      * @throws IOException if its unable to get the contacts to check if they're registered
 341      */
 342     public Map<String, Boolean> areUsersRegistered(Set<String> numbers) throws IOException {
 343         // Note "contactDetails" has no optionals. It only gives us info on users who are registered
 344         Map<String, UUID> contactDetails = getRegisteredUsers(numbers);
 345
 346         Set<String> registeredUsers = contactDetails.keySet();
 347
 348         return numbers.stream().collect(Collectors.toMap(x -> x, registeredUsers::contains));
 349     }
 350
 351     public void updateAccountAttributes() throws IOException {
 352         accountManager.setAccountAttributes(account.getSignalingKey(),
 353                 account.getSignalProtocolStore().getLocalRegistrationId(),
 354                 true,
 355                 // set legacy pin only if no KBS master key is set
 356                 account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
 357                 account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 358                 account.getSelfUnidentifiedAccessKey(),
 359                 account.isUnrestrictedUnidentifiedAccess(),
 360                 capabilities,
 361                 account.isDiscoverableByPhoneNumber());
 362     }
 363
 364     /**
 365      * @param avatar if avatar is null the image from the local avatar store is used (if present),
 366      *               if it's Optional.absent(), the avatar will be removed
 367      */
 368     public void setProfile(String name, Optional<File> avatar) throws IOException {
 369         // TODO
 370         String about = null;
 371         String aboutEmoji = null;
 372
 373         try (final StreamDetails streamDetails = avatar == null
 374                 ? avatarStore.retrieveProfileAvatar(getSelfAddress())
 375                 : avatar.isPresent() ? Utils.createStreamDetailsFromFile(avatar.get()) : null) {
 376             accountManager.setVersionedProfile(account.getUuid(),
 377                     account.getProfileKey(),
 378                     name,
 379                     about,
 380                     aboutEmoji,
 381                     streamDetails);
 382         }
 383
 384         if (avatar != null) {
 385             if (avatar.isPresent()) {
 386                 avatarStore.storeProfileAvatar(getSelfAddress(),
 387                         outputStream -> IOUtils.copyFileToStream(avatar.get(), outputStream));
 388             } else {
 389                 avatarStore.deleteProfileAvatar(getSelfAddress());
 390             }
 391         }
 392
 393         try {
 394             sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
 395         } catch (UntrustedIdentityException ignored) {
 396         }
 397     }
 398
 399     public void unregister() throws IOException {
 400         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 401         // If this is the master device, other users can't send messages to this number anymore.
 402         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 403         accountManager.setGcmId(Optional.absent());
 404         accountManager.deleteAccount();
 405
 406         account.setRegistered(false);
 407         account.save();
 408     }
 409
 410     public List<DeviceInfo> getLinkedDevices() throws IOException {
 411         List<DeviceInfo> devices = accountManager.getDevices();
 412         account.setMultiDevice(devices.size() > 1);
 413         account.save();
 414         return devices;
 415     }
 416
 417     public void removeLinkedDevices(int deviceId) throws IOException {
 418         accountManager.removeDevice(deviceId);
 419         List<DeviceInfo> devices = accountManager.getDevices();
 420         account.setMultiDevice(devices.size() > 1);
 421         account.save();
 422     }
 423
 424     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 425         DeviceLinkInfo info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 426
 427         addDevice(info.deviceIdentifier, info.deviceKey);
 428     }
 429
 430     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 431         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 432         String verificationCode = accountManager.getNewDeviceVerificationCode();
 433
 434         accountManager.addDevice(deviceIdentifier,
 435                 deviceKey,
 436                 identityKeyPair,
 437                 Optional.of(account.getProfileKey().serialize()),
 438                 verificationCode);
 439         account.setMultiDevice(true);
 440         account.save();
 441     }
 442
 443     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 444         if (!account.isMasterDevice()) {
 445             throw new RuntimeException("Only master device can set a PIN");
 446         }
 447         if (pin.isPresent()) {
 448             final MasterKey masterKey = account.getPinMasterKey() != null
 449                     ? account.getPinMasterKey()
 450                     : KeyUtils.createMasterKey();
 451
 452             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 453
 454             account.setRegistrationLockPin(pin.get());
 455             account.setPinMasterKey(masterKey);
 456         } else {
 457             // Remove legacy registration lock
 458             accountManager.removeRegistrationLockV1();
 459
 460             // Remove KBS Pin
 461             pinHelper.removeRegistrationLockPin();
 462
 463             account.setRegistrationLockPin(null);
 464             account.setPinMasterKey(null);
 465         }
 466         account.save();
 467     }
 468
 469     void refreshPreKeys() throws IOException {
 470         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 471         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 472         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 473
 474         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 475     }
 476
 477     private List<PreKeyRecord> generatePreKeys() {
 478         final int offset = account.getPreKeyIdOffset();
 479
 480         List<PreKeyRecord> records = KeyUtils.generatePreKeyRecords(offset, ServiceConfig.PREKEY_BATCH_SIZE);
 481         account.addPreKeys(records);
 482         account.save();
 483
 484         return records;
 485     }
 486
 487     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 488         final int signedPreKeyId = account.getNextSignedPreKeyId();
 489
 490         SignedPreKeyRecord record = KeyUtils.generateSignedPreKeyRecord(identityKeyPair, signedPreKeyId);
 491         account.addSignedPreKey(record);
 492         account.save();
 493
 494         return record;
 495     }
 496
 497     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 498         if (messagePipe == null) {
 499             messagePipe = messageReceiver.createMessagePipe();
 500         }
 501         return messagePipe;
 502     }
 503
 504     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 505         if (unidentifiedMessagePipe == null) {
 506             unidentifiedMessagePipe = messageReceiver.createUnidentifiedMessagePipe();
 507         }
 508         return unidentifiedMessagePipe;
 509     }
 510
 511     private SignalServiceMessageSender createMessageSender() {
 512         final ExecutorService executor = null;
 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     private SignalProfile getRecipientProfile(
 531             SignalServiceAddress address
 532     ) {
 533         return getRecipientProfile(address, false);
 534     }
 535
 536     private SignalProfile getRecipientProfile(
 537             SignalServiceAddress address, boolean force
 538     ) {
 539         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 540         if (profileEntry == null) {
 541             return null;
 542         }
 543         long now = new Date().getTime();
 544         // Profiles are cached for 24h before retrieving them again
 545         if (!profileEntry.isRequestPending() && (
 546                 force
 547                         || profileEntry.getProfile() == null
 548                         || now - profileEntry.getLastUpdateTimestamp() > 24 * 60 * 60 * 1000
 549         )) {
 550             profileEntry.setRequestPending(true);
 551             final SignalServiceProfile encryptedProfile;
 552             try {
 553                 encryptedProfile = profileHelper.retrieveProfileSync(address, SignalServiceProfile.RequestType.PROFILE)
 554                         .getProfile();
 555             } catch (IOException e) {
 556                 logger.warn("Failed to retrieve profile, ignoring: {}", e.getMessage());
 557                 return null;
 558             } finally {
 559                 profileEntry.setRequestPending(false);
 560             }
 561
 562             final ProfileKey profileKey = profileEntry.getProfileKey();
 563             final SignalProfile profile = decryptProfileAndDownloadAvatar(address, profileKey, encryptedProfile);
 564             account.getProfileStore()
 565                     .updateProfile(address, profileKey, now, profile, profileEntry.getProfileKeyCredential());
 566             return profile;
 567         }
 568         return profileEntry.getProfile();
 569     }
 570
 571     private ProfileKeyCredential getRecipientProfileKeyCredential(SignalServiceAddress address) {
 572         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 573         if (profileEntry == null) {
 574             return null;
 575         }
 576         if (profileEntry.getProfileKeyCredential() == null) {
 577             ProfileAndCredential profileAndCredential;
 578             try {
 579                 profileAndCredential = profileHelper.retrieveProfileSync(address,
 580                         SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 581             } catch (IOException e) {
 582                 logger.warn("Failed to retrieve profile key credential, ignoring: {}", e.getMessage());
 583                 return null;
 584             }
 585
 586             long now = new Date().getTime();
 587             final ProfileKeyCredential profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 588             final SignalProfile profile = decryptProfileAndDownloadAvatar(address,
 589                     profileEntry.getProfileKey(),
 590                     profileAndCredential.getProfile());
 591             account.getProfileStore()
 592                     .updateProfile(address, profileEntry.getProfileKey(), now, profile, profileKeyCredential);
 593             return profileKeyCredential;
 594         }
 595         return profileEntry.getProfileKeyCredential();
 596     }
 597
 598     private SignalProfile decryptProfileAndDownloadAvatar(
 599             final SignalServiceAddress address, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 600     ) {
 601         if (encryptedProfile.getAvatar() != null) {
 602             downloadProfileAvatar(address, encryptedProfile.getAvatar(), profileKey);
 603         }
 604
 605         return ProfileUtils.decryptProfile(profileKey, encryptedProfile);
 606     }
 607
 608     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(GroupId groupId) throws IOException {
 609         final StreamDetails streamDetails = avatarStore.retrieveGroupAvatar(groupId);
 610         if (streamDetails == null) {
 611             return Optional.absent();
 612         }
 613
 614         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 615     }
 616
 617     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(SignalServiceAddress address) throws IOException {
 618         final StreamDetails streamDetails = avatarStore.retrieveContactAvatar(address);
 619         if (streamDetails == null) {
 620             return Optional.absent();
 621         }
 622
 623         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 624     }
 625
 626     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 627         GroupInfo g = getGroup(groupId);
 628         if (g == null) {
 629             throw new GroupNotFoundException(groupId);
 630         }
 631         if (!g.isMember(account.getSelfAddress())) {
 632             throw new NotAGroupMemberException(groupId, g.getTitle());
 633         }
 634         return g;
 635     }
 636
 637     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 638         GroupInfo g = getGroup(groupId);
 639         if (g == null) {
 640             throw new GroupNotFoundException(groupId);
 641         }
 642         if (!g.isMember(account.getSelfAddress()) && !g.isPendingMember(account.getSelfAddress())) {
 643             throw new NotAGroupMemberException(groupId, g.getTitle());
 644         }
 645         return g;
 646     }
 647
 648     public List<GroupInfo> getGroups() {
 649         return account.getGroupStore().getGroups();
 650     }
 651
 652     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 653             String messageText, List<String> attachments, GroupId groupId
 654     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 655         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 656                 .withBody(messageText);
 657         if (attachments != null) {
 658             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 659         }
 660
 661         return sendGroupMessage(messageBuilder, groupId);
 662     }
 663
 664     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 665             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, GroupId groupId
 666     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 667         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
 668                 remove,
 669                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 670                 targetSentTimestamp);
 671         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 672                 .withReaction(reaction);
 673
 674         return sendGroupMessage(messageBuilder, groupId);
 675     }
 676
 677     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 678             SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
 679     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 680         final GroupInfo g = getGroupForSending(groupId);
 681
 682         GroupUtils.setGroupContext(messageBuilder, g);
 683         messageBuilder.withExpiration(g.getMessageExpirationTime());
 684
 685         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 686     }
 687
 688     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(GroupId groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 689         SignalServiceDataMessage.Builder messageBuilder;
 690
 691         final GroupInfo g = getGroupForUpdating(groupId);
 692         if (g instanceof GroupInfoV1) {
 693             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
 694             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 695                     .withId(groupId.serialize())
 696                     .build();
 697             messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 698             groupInfoV1.removeMember(account.getSelfAddress());
 699             account.getGroupStore().updateGroup(groupInfoV1);
 700         } else {
 701             final GroupInfoV2 groupInfoV2 = (GroupInfoV2) g;
 702             final Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.leaveGroup(groupInfoV2);
 703             groupInfoV2.setGroup(groupGroupChangePair.first());
 704             messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 705             account.getGroupStore().updateGroup(groupInfoV2);
 706         }
 707
 708         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 709     }
 710
 711     public Pair<GroupId, List<SendMessageResult>> updateGroup(
 712             GroupId groupId, String name, List<String> members, File avatarFile
 713     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 714         return sendUpdateGroupMessage(groupId,
 715                 name,
 716                 members == null ? null : getSignalServiceAddresses(members),
 717                 avatarFile);
 718     }
 719
 720     private Pair<GroupId, List<SendMessageResult>> sendUpdateGroupMessage(
 721             GroupId groupId, String name, Collection<SignalServiceAddress> members, File avatarFile
 722     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 723         GroupInfo g;
 724         SignalServiceDataMessage.Builder messageBuilder;
 725         if (groupId == null) {
 726             // Create new group
 727             GroupInfoV2 gv2 = groupHelper.createGroupV2(name == null ? "" : name,
 728                     members == null ? List.of() : members,
 729                     avatarFile);
 730             if (gv2 == null) {
 731                 GroupInfoV1 gv1 = new GroupInfoV1(GroupIdV1.createRandom());
 732                 gv1.addMembers(List.of(account.getSelfAddress()));
 733                 updateGroupV1(gv1, name, members, avatarFile);
 734                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 735                 g = gv1;
 736             } else {
 737                 if (avatarFile != null) {
 738                     avatarStore.storeGroupAvatar(gv2.getGroupId(),
 739                             outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 740                 }
 741                 messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 742                 g = gv2;
 743             }
 744         } else {
 745             GroupInfo group = getGroupForUpdating(groupId);
 746             if (group instanceof GroupInfoV2) {
 747                 final GroupInfoV2 groupInfoV2 = (GroupInfoV2) group;
 748
 749                 Pair<Long, List<SendMessageResult>> result = null;
 750                 if (groupInfoV2.isPendingMember(getSelfAddress())) {
 751                     Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.acceptInvite(groupInfoV2);
 752                     result = sendUpdateGroupMessage(groupInfoV2,
 753                             groupGroupChangePair.first(),
 754                             groupGroupChangePair.second());
 755                 }
 756
 757                 if (members != null) {
 758                     final Set<SignalServiceAddress> newMembers = new HashSet<>(members);
 759                     newMembers.removeAll(group.getMembers()
 760                             .stream()
 761                             .map(this::resolveSignalServiceAddress)
 762                             .collect(Collectors.toSet()));
 763                     if (newMembers.size() > 0) {
 764                         Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2,
 765                                 newMembers);
 766                         result = sendUpdateGroupMessage(groupInfoV2,
 767                                 groupGroupChangePair.first(),
 768                                 groupGroupChangePair.second());
 769                     }
 770                 }
 771                 if (result == null || name != null || avatarFile != null) {
 772                     Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2,
 773                             name,
 774                             avatarFile);
 775                     if (avatarFile != null) {
 776                         avatarStore.storeGroupAvatar(groupInfoV2.getGroupId(),
 777                                 outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 778                     }
 779                     result = sendUpdateGroupMessage(groupInfoV2,
 780                             groupGroupChangePair.first(),
 781                             groupGroupChangePair.second());
 782                 }
 783
 784                 return new Pair<>(group.getGroupId(), result.second());
 785             } else {
 786                 GroupInfoV1 gv1 = (GroupInfoV1) group;
 787                 updateGroupV1(gv1, name, members, avatarFile);
 788                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 789                 g = gv1;
 790             }
 791         }
 792
 793         account.getGroupStore().updateGroup(g);
 794
 795         final Pair<Long, List<SendMessageResult>> result = sendMessage(messageBuilder,
 796                 g.getMembersIncludingPendingWithout(account.getSelfAddress()));
 797         return new Pair<>(g.getGroupId(), result.second());
 798     }
 799
 800     private void updateGroupV1(
 801             final GroupInfoV1 g,
 802             final String name,
 803             final Collection<SignalServiceAddress> members,
 804             final File avatarFile
 805     ) throws IOException {
 806         if (name != null) {
 807             g.name = name;
 808         }
 809
 810         if (members != null) {
 811             final Set<String> newE164Members = new HashSet<>();
 812             for (SignalServiceAddress member : members) {
 813                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 814                     continue;
 815                 }
 816                 newE164Members.add(member.getNumber().get());
 817             }
 818
 819             final Map<String, UUID> registeredUsers = getRegisteredUsers(newE164Members);
 820             if (registeredUsers.size() != newE164Members.size()) {
 821                 // Some of the new members are not registered on Signal
 822                 newE164Members.removeAll(registeredUsers.keySet());
 823                 throw new IOException("Failed to add members "
 824                         + String.join(", ", newE164Members)
 825                         + " to group: Not registered on Signal");
 826             }
 827
 828             g.addMembers(members);
 829         }
 830
 831         if (avatarFile != null) {
 832             avatarStore.storeGroupAvatar(g.getGroupId(),
 833                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 834         }
 835     }
 836
 837     public Pair<GroupId, List<SendMessageResult>> joinGroup(
 838             GroupInviteLinkUrl inviteLinkUrl
 839     ) throws IOException, GroupLinkNotActiveException {
 840         return sendJoinGroupMessage(inviteLinkUrl);
 841     }
 842
 843     private Pair<GroupId, List<SendMessageResult>> sendJoinGroupMessage(
 844             GroupInviteLinkUrl inviteLinkUrl
 845     ) throws IOException, GroupLinkNotActiveException {
 846         final DecryptedGroupJoinInfo groupJoinInfo = groupHelper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
 847                 inviteLinkUrl.getPassword());
 848         final GroupChange groupChange = groupHelper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
 849                 inviteLinkUrl.getPassword(),
 850                 groupJoinInfo);
 851         final GroupInfoV2 group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
 852                 groupJoinInfo.getRevision() + 1,
 853                 groupChange.toByteArray());
 854
 855         if (group.getGroup() == null) {
 856             // Only requested member, can't send update to group members
 857             return new Pair<>(group.getGroupId(), List.of());
 858         }
 859
 860         final Pair<Long, List<SendMessageResult>> result = sendUpdateGroupMessage(group, group.getGroup(), groupChange);
 861
 862         return new Pair<>(group.getGroupId(), result.second());
 863     }
 864
 865     private static int currentTimeDays() {
 866         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
 867     }
 868
 869     private GroupsV2AuthorizationString getGroupAuthForToday(
 870             final GroupSecretParams groupSecretParams
 871     ) throws IOException {
 872         final int today = currentTimeDays();
 873         // Returns credentials for the next 7 days
 874         final HashMap<Integer, AuthCredentialResponse> credentials = groupsV2Api.getCredentials(today);
 875         // TODO cache credentials until they expire
 876         AuthCredentialResponse authCredentialResponse = credentials.get(today);
 877         try {
 878             return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
 879                     today,
 880                     groupSecretParams,
 881                     authCredentialResponse);
 882         } catch (VerificationFailedException e) {
 883             throw new IOException(e);
 884         }
 885     }
 886
 887     private Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 888             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
 889     ) throws IOException {
 890         group.setGroup(newDecryptedGroup);
 891         final SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(group,
 892                 groupChange.toByteArray());
 893         account.getGroupStore().updateGroup(group);
 894         return sendMessage(messageBuilder, group.getMembersIncludingPendingWithout(account.getSelfAddress()));
 895     }
 896
 897     Pair<Long, List<SendMessageResult>> sendGroupInfoMessage(
 898             GroupIdV1 groupId, SignalServiceAddress recipient
 899     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 900         GroupInfoV1 g;
 901         GroupInfo group = getGroupForSending(groupId);
 902         if (!(group instanceof GroupInfoV1)) {
 903             throw new RuntimeException("Received an invalid group request for a v2 group!");
 904         }
 905         g = (GroupInfoV1) group;
 906
 907         if (!g.isMember(recipient)) {
 908             throw new NotAGroupMemberException(groupId, g.name);
 909         }
 910
 911         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 912
 913         // Send group message only to the recipient who requested it
 914         return sendMessage(messageBuilder, List.of(recipient));
 915     }
 916
 917     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
 918         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 919                 .withId(g.getGroupId().serialize())
 920                 .withName(g.name)
 921                 .withMembers(new ArrayList<>(g.getMembers()));
 922
 923         try {
 924             final Optional<SignalServiceAttachmentStream> attachment = createGroupAvatarAttachment(g.getGroupId());
 925             if (attachment.isPresent()) {
 926                 group.withAvatar(attachment.get());
 927             }
 928         } catch (IOException e) {
 929             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
 930         }
 931
 932         return SignalServiceDataMessage.newBuilder()
 933                 .asGroupMessage(group.build())
 934                 .withExpiration(g.getMessageExpirationTime());
 935     }
 936
 937     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
 938         SignalServiceGroupV2.Builder group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
 939                 .withRevision(g.getGroup().getRevision())
 940                 .withSignedGroupChange(signedGroupChange);
 941         return SignalServiceDataMessage.newBuilder()
 942                 .asGroupMessage(group.build())
 943                 .withExpiration(g.getMessageExpirationTime());
 944     }
 945
 946     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
 947             GroupIdV1 groupId, SignalServiceAddress recipient
 948     ) throws IOException {
 949         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 950                 .withId(groupId.serialize());
 951
 952         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 953                 .asGroupMessage(group.build());
 954
 955         // Send group info request message to the recipient who sent us a message with this groupId
 956         return sendMessage(messageBuilder, List.of(recipient));
 957     }
 958
 959     void sendReceipt(
 960             SignalServiceAddress remoteAddress, long messageId
 961     ) throws IOException, UntrustedIdentityException {
 962         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 963                 List.of(messageId),
 964                 System.currentTimeMillis());
 965
 966         createMessageSender().sendReceipt(remoteAddress,
 967                 unidentifiedAccessHelper.getAccessFor(remoteAddress),
 968                 receiptMessage);
 969     }
 970
 971     public Pair<Long, List<SendMessageResult>> sendMessage(
 972             String messageText, List<String> attachments, List<String> recipients
 973     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
 974         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 975                 .withBody(messageText);
 976         if (attachments != null) {
 977             List<SignalServiceAttachment> attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
 978
 979             // Upload attachments here, so we only upload once even for multiple recipients
 980             SignalServiceMessageSender messageSender = createMessageSender();
 981             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 982             for (SignalServiceAttachment attachment : attachmentStreams) {
 983                 if (attachment.isStream()) {
 984                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 985                 } else if (attachment.isPointer()) {
 986                     attachmentPointers.add(attachment.asPointer());
 987                 }
 988             }
 989
 990             messageBuilder.withAttachments(attachmentPointers);
 991         }
 992         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
 993     }
 994
 995     public Pair<Long, SendMessageResult> sendSelfMessage(
 996             String messageText, List<String> attachments
 997     ) throws IOException, AttachmentInvalidException {
 998         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 999                 .withBody(messageText);
1000         if (attachments != null) {
1001             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
1002         }
1003         return sendSelfMessage(messageBuilder);
1004     }
1005
1006     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
1007             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
1008     ) throws IOException, InvalidNumberException {
1009         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
1010                 remove,
1011                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
1012                 targetSentTimestamp);
1013         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1014                 .withReaction(reaction);
1015         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1016     }
1017
1018     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1019         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
1020
1021         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
1022         try {
1023             return sendMessage(messageBuilder, signalServiceAddresses);
1024         } catch (Exception e) {
1025             for (SignalServiceAddress address : signalServiceAddresses) {
1026                 handleEndSession(address);
1027             }
1028             account.save();
1029             throw e;
1030         }
1031     }
1032
1033     public String getContactName(String number) throws InvalidNumberException {
1034         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
1035         if (contact == null) {
1036             return "";
1037         } else {
1038             return contact.name;
1039         }
1040     }
1041
1042     public void setContactName(String number, String name) throws InvalidNumberException {
1043         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1044         ContactInfo contact = account.getContactStore().getContact(address);
1045         if (contact == null) {
1046             contact = new ContactInfo(address);
1047         }
1048         contact.name = name;
1049         account.getContactStore().updateContact(contact);
1050         account.save();
1051     }
1052
1053     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
1054         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
1055     }
1056
1057     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
1058         ContactInfo contact = account.getContactStore().getContact(address);
1059         if (contact == null) {
1060             contact = new ContactInfo(address);
1061         }
1062         contact.blocked = blocked;
1063         account.getContactStore().updateContact(contact);
1064         account.save();
1065     }
1066
1067     public void setGroupBlocked(final GroupId groupId, final boolean blocked) throws GroupNotFoundException {
1068         GroupInfo group = getGroup(groupId);
1069         if (group == null) {
1070             throw new GroupNotFoundException(groupId);
1071         }
1072
1073         group.setBlocked(blocked);
1074         account.getGroupStore().updateGroup(group);
1075         account.save();
1076     }
1077
1078     /**
1079      * Change the expiration timer for a contact
1080      */
1081     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
1082         ContactInfo contact = account.getContactStore().getContact(address);
1083         contact.messageExpirationTime = messageExpirationTimer;
1084         account.getContactStore().updateContact(contact);
1085         sendExpirationTimerUpdate(address);
1086         account.save();
1087     }
1088
1089     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
1090         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1091                 .asExpirationUpdate();
1092         sendMessage(messageBuilder, List.of(address));
1093     }
1094
1095     /**
1096      * Change the expiration timer for a contact
1097      */
1098     public void setExpirationTimer(
1099             String number, int messageExpirationTimer
1100     ) throws IOException, InvalidNumberException {
1101         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1102         setExpirationTimer(address, messageExpirationTimer);
1103     }
1104
1105     /**
1106      * Change the expiration timer for a group
1107      */
1108     public void setExpirationTimer(GroupId groupId, int messageExpirationTimer) {
1109         GroupInfo g = getGroup(groupId);
1110         if (g instanceof GroupInfoV1) {
1111             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
1112             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1113             account.getGroupStore().updateGroup(groupInfoV1);
1114         } else {
1115             throw new RuntimeException("TODO Not implemented!");
1116         }
1117     }
1118
1119     /**
1120      * Upload the sticker pack from path.
1121      *
1122      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1123      * @return if successful, returns the URL to install the sticker pack in the signal app
1124      */
1125     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1126         SignalServiceStickerManifestUpload manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
1127
1128         SignalServiceMessageSender messageSender = createMessageSender();
1129
1130         byte[] packKey = KeyUtils.createStickerUploadKey();
1131         String packId = messageSender.uploadStickerManifest(manifest, packKey);
1132
1133         Sticker sticker = new Sticker(Hex.fromStringCondensed(packId), packKey);
1134         account.getStickerStore().updateSticker(sticker);
1135         account.save();
1136
1137         try {
1138             return new URI("https",
1139                     "signal.art",
1140                     "/addstickers/",
1141                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1142                             Hex.toStringCondensed(packKey),
1143                             StandardCharsets.UTF_8)).toString();
1144         } catch (URISyntaxException e) {
1145             throw new AssertionError(e);
1146         }
1147     }
1148
1149     void requestSyncGroups() throws IOException {
1150         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1151                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1152                 .build();
1153         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1154         try {
1155             sendSyncMessage(message);
1156         } catch (UntrustedIdentityException e) {
1157             throw new AssertionError(e);
1158         }
1159     }
1160
1161     void requestSyncContacts() throws IOException {
1162         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1163                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1164                 .build();
1165         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1166         try {
1167             sendSyncMessage(message);
1168         } catch (UntrustedIdentityException e) {
1169             throw new AssertionError(e);
1170         }
1171     }
1172
1173     void requestSyncBlocked() throws IOException {
1174         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1175                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1176                 .build();
1177         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1178         try {
1179             sendSyncMessage(message);
1180         } catch (UntrustedIdentityException e) {
1181             throw new AssertionError(e);
1182         }
1183     }
1184
1185     void requestSyncConfiguration() throws IOException {
1186         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1187                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1188                 .build();
1189         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1190         try {
1191             sendSyncMessage(message);
1192         } catch (UntrustedIdentityException e) {
1193             throw new AssertionError(e);
1194         }
1195     }
1196
1197     void requestSyncKeys() throws IOException {
1198         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1199                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
1200                 .build();
1201         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1202         try {
1203             sendSyncMessage(message);
1204         } catch (UntrustedIdentityException e) {
1205             throw new AssertionError(e);
1206         }
1207     }
1208
1209     private byte[] getSenderCertificate() {
1210         // TODO support UUID capable sender certificates
1211         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1212         byte[] certificate;
1213         try {
1214             certificate = accountManager.getSenderCertificate();
1215         } catch (IOException e) {
1216             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1217             return null;
1218         }
1219         // TODO cache for a day
1220         return certificate;
1221     }
1222
1223     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1224         SignalServiceMessageSender messageSender = createMessageSender();
1225         try {
1226             messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1227         } catch (UntrustedIdentityException e) {
1228             account.getSignalProtocolStore()
1229                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1230                             e.getIdentityKey(),
1231                             TrustLevel.UNTRUSTED);
1232             throw e;
1233         }
1234     }
1235
1236     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1237         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1238         final Set<SignalServiceAddress> addressesMissingUuid = new HashSet<>();
1239
1240         for (String number : numbers) {
1241             final SignalServiceAddress resolvedAddress = canonicalizeAndResolveSignalServiceAddress(number);
1242             if (resolvedAddress.getUuid().isPresent()) {
1243                 signalServiceAddresses.add(resolvedAddress);
1244             } else {
1245                 addressesMissingUuid.add(resolvedAddress);
1246             }
1247         }
1248
1249         final Set<String> numbersMissingUuid = addressesMissingUuid.stream()
1250                 .map(a -> a.getNumber().get())
1251                 .collect(Collectors.toSet());
1252         Map<String, UUID> registeredUsers;
1253         try {
1254             registeredUsers = getRegisteredUsers(numbersMissingUuid);
1255         } catch (IOException e) {
1256             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1257             registeredUsers = Map.of();
1258         }
1259
1260         for (SignalServiceAddress address : addressesMissingUuid) {
1261             final String number = address.getNumber().get();
1262             if (registeredUsers.containsKey(number)) {
1263                 final SignalServiceAddress newAddress = resolveSignalServiceAddress(new SignalServiceAddress(
1264                         registeredUsers.get(number),
1265                         number));
1266                 signalServiceAddresses.add(newAddress);
1267             } else {
1268                 signalServiceAddresses.add(address);
1269             }
1270         }
1271
1272         return signalServiceAddresses;
1273     }
1274
1275     private Map<String, UUID> getRegisteredUsers(final Set<String> numbersMissingUuid) throws IOException {
1276         try {
1277             return accountManager.getRegisteredUsers(ServiceConfig.getIasKeyStore(),
1278                     numbersMissingUuid,
1279                     serviceEnvironmentConfig.getCdsMrenclave());
1280         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
1281             throw new IOException(e);
1282         }
1283     }
1284
1285     private Pair<Long, List<SendMessageResult>> sendMessage(
1286             SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients
1287     ) throws IOException {
1288         recipients = recipients.stream().map(this::resolveSignalServiceAddress).collect(Collectors.toSet());
1289         final long timestamp = System.currentTimeMillis();
1290         messageBuilder.withTimestamp(timestamp);
1291         getOrCreateMessagePipe();
1292         getOrCreateUnidentifiedMessagePipe();
1293         SignalServiceDataMessage message = null;
1294         try {
1295             message = messageBuilder.build();
1296             if (message.getGroupContext().isPresent()) {
1297                 try {
1298                     SignalServiceMessageSender messageSender = createMessageSender();
1299                     final boolean isRecipientUpdate = false;
1300                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients),
1301                             unidentifiedAccessHelper.getAccessFor(recipients),
1302                             isRecipientUpdate,
1303                             message);
1304                     for (SendMessageResult r : result) {
1305                         if (r.getIdentityFailure() != null) {
1306                             account.getSignalProtocolStore()
1307                                     .saveIdentity(r.getAddress(),
1308                                             r.getIdentityFailure().getIdentityKey(),
1309                                             TrustLevel.UNTRUSTED);
1310                         }
1311                     }
1312                     return new Pair<>(timestamp, result);
1313                 } catch (UntrustedIdentityException e) {
1314                     account.getSignalProtocolStore()
1315                             .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1316                                     e.getIdentityKey(),
1317                                     TrustLevel.UNTRUSTED);
1318                     return new Pair<>(timestamp, List.of());
1319                 }
1320             } else {
1321                 // Send to all individually, so sync messages are sent correctly
1322                 messageBuilder.withProfileKey(account.getProfileKey().serialize());
1323                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1324                 for (SignalServiceAddress address : recipients) {
1325                     final ContactInfo contact = account.getContactStore().getContact(address);
1326                     final int expirationTime = contact != null ? contact.messageExpirationTime : 0;
1327                     messageBuilder.withExpiration(expirationTime);
1328                     message = messageBuilder.build();
1329                     results.add(sendMessage(address, message));
1330                 }
1331                 return new Pair<>(timestamp, results);
1332             }
1333         } finally {
1334             if (message != null && message.isEndSession()) {
1335                 for (SignalServiceAddress recipient : recipients) {
1336                     handleEndSession(recipient);
1337                 }
1338             }
1339             account.save();
1340         }
1341     }
1342
1343     private Pair<Long, SendMessageResult> sendSelfMessage(
1344             SignalServiceDataMessage.Builder messageBuilder
1345     ) throws IOException {
1346         final long timestamp = System.currentTimeMillis();
1347         messageBuilder.withTimestamp(timestamp);
1348         getOrCreateMessagePipe();
1349         getOrCreateUnidentifiedMessagePipe();
1350         try {
1351             final SignalServiceAddress address = getSelfAddress();
1352
1353             final ContactInfo contact = account.getContactStore().getContact(address);
1354             final int expirationTime = contact != null ? contact.messageExpirationTime : 0;
1355             messageBuilder.withExpiration(expirationTime);
1356
1357             SignalServiceDataMessage message = messageBuilder.build();
1358             final SendMessageResult result = sendSelfMessage(message);
1359             return new Pair<>(timestamp, result);
1360         } finally {
1361             account.save();
1362         }
1363     }
1364
1365     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1366         SignalServiceMessageSender messageSender = createMessageSender();
1367
1368         SignalServiceAddress recipient = account.getSelfAddress();
1369
1370         final Optional<UnidentifiedAccessPair> unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipient);
1371         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1372                 message.getTimestamp(),
1373                 message,
1374                 message.getExpiresInSeconds(),
1375                 Map.of(recipient, unidentifiedAccess.isPresent()),
1376                 false);
1377         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1378
1379         try {
1380             long startTime = System.currentTimeMillis();
1381             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1382             return SendMessageResult.success(recipient,
1383                     unidentifiedAccess.isPresent(),
1384                     false,
1385                     System.currentTimeMillis() - startTime);
1386         } catch (UntrustedIdentityException e) {
1387             account.getSignalProtocolStore()
1388                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1389                             e.getIdentityKey(),
1390                             TrustLevel.UNTRUSTED);
1391             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1392         }
1393     }
1394
1395     private SendMessageResult sendMessage(
1396             SignalServiceAddress address, SignalServiceDataMessage message
1397     ) throws IOException {
1398         SignalServiceMessageSender messageSender = createMessageSender();
1399
1400         try {
1401             return messageSender.sendMessage(address, unidentifiedAccessHelper.getAccessFor(address), message);
1402         } catch (UntrustedIdentityException e) {
1403             account.getSignalProtocolStore()
1404                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1405                             e.getIdentityKey(),
1406                             TrustLevel.UNTRUSTED);
1407             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1408         }
1409     }
1410
1411     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1412         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(),
1413                 account.getSignalProtocolStore(),
1414                 certificateValidator);
1415         try {
1416             return cipher.decrypt(envelope);
1417         } catch (ProtocolUntrustedIdentityException e) {
1418             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1419                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e
1420                         .getCause();
1421                 final IdentityKey untrustedIdentity = identityException.getUntrustedIdentity();
1422                 if (untrustedIdentity != null) {
1423                     account.getSignalProtocolStore()
1424                             .saveIdentity(resolveSignalServiceAddress(identityException.getName()),
1425                                     untrustedIdentity,
1426                                     TrustLevel.UNTRUSTED);
1427                 }
1428                 throw identityException;
1429             }
1430             throw new AssertionError(e);
1431         }
1432     }
1433
1434     private void handleEndSession(SignalServiceAddress source) {
1435         account.getSignalProtocolStore().deleteAllSessions(source);
1436     }
1437
1438     private List<HandleAction> handleSignalServiceDataMessage(
1439             SignalServiceDataMessage message,
1440             boolean isSync,
1441             SignalServiceAddress source,
1442             SignalServiceAddress destination,
1443             boolean ignoreAttachments
1444     ) {
1445         List<HandleAction> actions = new ArrayList<>();
1446         if (message.getGroupContext().isPresent()) {
1447             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1448                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1449                 GroupIdV1 groupId = GroupId.v1(groupInfo.getGroupId());
1450                 GroupInfo group = getGroup(groupId);
1451                 if (group == null || group instanceof GroupInfoV1) {
1452                     GroupInfoV1 groupV1 = (GroupInfoV1) group;
1453                     switch (groupInfo.getType()) {
1454                         case UPDATE: {
1455                             if (groupV1 == null) {
1456                                 groupV1 = new GroupInfoV1(groupId);
1457                             }
1458
1459                             if (groupInfo.getAvatar().isPresent()) {
1460                                 SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1461                                 downloadGroupAvatar(avatar, groupV1.getGroupId());
1462                             }
1463
1464                             if (groupInfo.getName().isPresent()) {
1465                                 groupV1.name = groupInfo.getName().get();
1466                             }
1467
1468                             if (groupInfo.getMembers().isPresent()) {
1469                                 groupV1.addMembers(groupInfo.getMembers()
1470                                         .get()
1471                                         .stream()
1472                                         .map(this::resolveSignalServiceAddress)
1473                                         .collect(Collectors.toSet()));
1474                             }
1475
1476                             account.getGroupStore().updateGroup(groupV1);
1477                             break;
1478                         }
1479                         case DELIVER:
1480                             if (groupV1 == null && !isSync) {
1481                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1482                             }
1483                             break;
1484                         case QUIT: {
1485                             if (groupV1 != null) {
1486                                 groupV1.removeMember(source);
1487                                 account.getGroupStore().updateGroup(groupV1);
1488                             }
1489                             break;
1490                         }
1491                         case REQUEST_INFO:
1492                             if (groupV1 != null && !isSync) {
1493                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
1494                             }
1495                             break;
1496                     }
1497                 } else {
1498                     // Received a group v1 message for a v2 group
1499                 }
1500             }
1501             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1502                 final SignalServiceGroupV2 groupContext = message.getGroupContext().get().getGroupV2().get();
1503                 final GroupMasterKey groupMasterKey = groupContext.getMasterKey();
1504
1505                 getOrMigrateGroup(groupMasterKey,
1506                         groupContext.getRevision(),
1507                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1508             }
1509         }
1510
1511         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1512         if (conversationPartnerAddress != null && message.isEndSession()) {
1513             handleEndSession(conversationPartnerAddress);
1514         }
1515         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1516             if (message.getGroupContext().isPresent()) {
1517                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1518                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1519                     GroupInfoV1 group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1520                     if (group != null) {
1521                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1522                             group.messageExpirationTime = message.getExpiresInSeconds();
1523                             account.getGroupStore().updateGroup(group);
1524                         }
1525                     }
1526                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1527                     // disappearing message timer already stored in the DecryptedGroup
1528                 }
1529             } else if (conversationPartnerAddress != null) {
1530                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1531                 if (contact == null) {
1532                     contact = new ContactInfo(conversationPartnerAddress);
1533                 }
1534                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1535                     contact.messageExpirationTime = message.getExpiresInSeconds();
1536                     account.getContactStore().updateContact(contact);
1537                 }
1538             }
1539         }
1540         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1541             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1542                 downloadAttachment(attachment);
1543             }
1544         }
1545         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1546             final ProfileKey profileKey;
1547             try {
1548                 profileKey = new ProfileKey(message.getProfileKey().get());
1549             } catch (InvalidInputException e) {
1550                 throw new AssertionError(e);
1551             }
1552             if (source.matches(account.getSelfAddress())) {
1553                 this.account.setProfileKey(profileKey);
1554             }
1555             this.account.getProfileStore().storeProfileKey(source, profileKey);
1556         }
1557         if (message.getPreviews().isPresent()) {
1558             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1559             for (SignalServiceDataMessage.Preview preview : previews) {
1560                 if (preview.getImage().isPresent()) {
1561                     downloadAttachment(preview.getImage().get());
1562                 }
1563             }
1564         }
1565         if (message.getQuote().isPresent()) {
1566             final SignalServiceDataMessage.Quote quote = message.getQuote().get();
1567
1568             for (SignalServiceDataMessage.Quote.QuotedAttachment quotedAttachment : quote.getAttachments()) {
1569                 final SignalServiceAttachment thumbnail = quotedAttachment.getThumbnail();
1570                 if (thumbnail != null) {
1571                     downloadAttachment(thumbnail);
1572                 }
1573             }
1574         }
1575         if (message.getSticker().isPresent()) {
1576             final SignalServiceDataMessage.Sticker messageSticker = message.getSticker().get();
1577             Sticker sticker = account.getStickerStore().getSticker(messageSticker.getPackId());
1578             if (sticker == null) {
1579                 sticker = new Sticker(messageSticker.getPackId(), messageSticker.getPackKey());
1580                 account.getStickerStore().updateSticker(sticker);
1581             }
1582         }
1583         return actions;
1584     }
1585
1586     private GroupInfoV2 getOrMigrateGroup(
1587             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1588     ) {
1589         final GroupSecretParams groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1590
1591         GroupIdV2 groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1592         GroupInfo groupInfo = getGroup(groupId);
1593         final GroupInfoV2 groupInfoV2;
1594         if (groupInfo instanceof GroupInfoV1) {
1595             // Received a v2 group message for a v1 group, we need to locally migrate the group
1596             account.getGroupStore().deleteGroup(groupInfo.getGroupId());
1597             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1598             logger.info("Locally migrated group {} to group v2, id: {}",
1599                     groupInfo.getGroupId().toBase64(),
1600                     groupInfoV2.getGroupId().toBase64());
1601         } else if (groupInfo instanceof GroupInfoV2) {
1602             groupInfoV2 = (GroupInfoV2) groupInfo;
1603         } else {
1604             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1605         }
1606
1607         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1608             DecryptedGroup group = null;
1609             if (signedGroupChange != null
1610                     && groupInfoV2.getGroup() != null
1611                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1612                 group = groupHelper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(), signedGroupChange, groupMasterKey);
1613             }
1614             if (group == null) {
1615                 group = groupHelper.getDecryptedGroup(groupSecretParams);
1616             }
1617             if (group != null) {
1618                 storeProfileKeysFromMembers(group);
1619                 final String avatar = group.getAvatar();
1620                 if (avatar != null && !avatar.isEmpty()) {
1621                     downloadGroupAvatar(groupId, groupSecretParams, avatar);
1622                 }
1623             }
1624             groupInfoV2.setGroup(group);
1625             account.getGroupStore().updateGroup(groupInfoV2);
1626         }
1627
1628         return groupInfoV2;
1629     }
1630
1631     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1632         for (DecryptedMember member : group.getMembersList()) {
1633             final SignalServiceAddress address = resolveSignalServiceAddress(new SignalServiceAddress(UuidUtil.parseOrThrow(
1634                     member.getUuid().toByteArray()), null));
1635             try {
1636                 account.getProfileStore()
1637                         .storeProfileKey(address, new ProfileKey(member.getProfileKey().toByteArray()));
1638             } catch (InvalidInputException ignored) {
1639             }
1640         }
1641     }
1642
1643     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1644         for (CachedMessage cachedMessage : account.getMessageCache().getCachedMessages()) {
1645             retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
1646         }
1647     }
1648
1649     private void retryFailedReceivedMessage(
1650             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
1651     ) {
1652         SignalServiceEnvelope envelope = cachedMessage.loadEnvelope();
1653         if (envelope == null) {
1654             return;
1655         }
1656         SignalServiceContent content = null;
1657         if (!envelope.isReceipt()) {
1658             try {
1659                 content = decryptMessage(envelope);
1660             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1661                 return;
1662             } catch (Exception er) {
1663                 // All other errors are not recoverable, so delete the cached message
1664                 cachedMessage.delete();
1665                 return;
1666             }
1667             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1668             for (HandleAction action : actions) {
1669                 try {
1670                     action.execute(this);
1671                 } catch (Throwable e) {
1672                     logger.warn("Message action failed.", e);
1673                 }
1674             }
1675         }
1676         account.save();
1677         handler.handleMessage(envelope, content, null);
1678         cachedMessage.delete();
1679     }
1680
1681     public void receiveMessages(
1682             long timeout,
1683             TimeUnit unit,
1684             boolean returnOnTimeout,
1685             boolean ignoreAttachments,
1686             ReceiveMessageHandler handler
1687     ) throws IOException {
1688         retryFailedReceivedMessages(handler, ignoreAttachments);
1689
1690         Set<HandleAction> queuedActions = null;
1691
1692         final SignalServiceMessagePipe messagePipe = getOrCreateMessagePipe();
1693
1694         boolean hasCaughtUpWithOldMessages = false;
1695
1696         while (true) {
1697             SignalServiceEnvelope envelope;
1698             SignalServiceContent content = null;
1699             Exception exception = null;
1700             final CachedMessage[] cachedMessage = {null};
1701             try {
1702                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1703                     // store message on disk, before acknowledging receipt to the server
1704                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1);
1705                 });
1706                 if (result.isPresent()) {
1707                     envelope = result.get();
1708                 } else {
1709                     // Received indicator that server queue is empty
1710                     hasCaughtUpWithOldMessages = true;
1711
1712                     if (queuedActions != null) {
1713                         for (HandleAction action : queuedActions) {
1714                             try {
1715                                 action.execute(this);
1716                             } catch (Throwable e) {
1717                                 logger.warn("Message action failed.", e);
1718                             }
1719                         }
1720                         account.save();
1721                         queuedActions.clear();
1722                         queuedActions = null;
1723                     }
1724
1725                     // Continue to wait another timeout for new messages
1726                     continue;
1727                 }
1728             } catch (TimeoutException e) {
1729                 if (returnOnTimeout) return;
1730                 continue;
1731             } catch (InvalidVersionException e) {
1732                 logger.warn("Error while receiving messages, ignoring: {}", e.getMessage());
1733                 continue;
1734             }
1735
1736             if (envelope.hasSource()) {
1737                 // Store uuid if we don't have it already
1738                 SignalServiceAddress source = envelope.getSourceAddress();
1739                 resolveSignalServiceAddress(source);
1740             }
1741             if (!envelope.isReceipt()) {
1742                 try {
1743                     content = decryptMessage(envelope);
1744                 } catch (Exception e) {
1745                     exception = e;
1746                 }
1747                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1748                 if (hasCaughtUpWithOldMessages) {
1749                     for (HandleAction action : actions) {
1750                         try {
1751                             action.execute(this);
1752                         } catch (Throwable e) {
1753                             logger.warn("Message action failed.", e);
1754                         }
1755                     }
1756                 } else {
1757                     if (queuedActions == null) {
1758                         queuedActions = new HashSet<>();
1759                     }
1760                     queuedActions.addAll(actions);
1761                 }
1762             }
1763             account.save();
1764             if (isMessageBlocked(envelope, content)) {
1765                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
1766             } else if (isNotAGroupMember(envelope, content)) {
1767                 logger.info("Ignoring a message from a non group member: {}", envelope.getTimestamp());
1768             } else {
1769                 handler.handleMessage(envelope, content, exception);
1770             }
1771             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1772                 if (cachedMessage[0] != null) {
1773                     cachedMessage[0].delete();
1774                 }
1775             }
1776         }
1777     }
1778
1779     private boolean isMessageBlocked(
1780             SignalServiceEnvelope envelope, SignalServiceContent content
1781     ) {
1782         SignalServiceAddress source;
1783         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1784             source = envelope.getSourceAddress();
1785         } else if (content != null) {
1786             source = content.getSender();
1787         } else {
1788             return false;
1789         }
1790         ContactInfo sourceContact = account.getContactStore().getContact(source);
1791         if (sourceContact != null && sourceContact.blocked) {
1792             return true;
1793         }
1794
1795         if (content != null && content.getDataMessage().isPresent()) {
1796             SignalServiceDataMessage message = content.getDataMessage().get();
1797             if (message.getGroupContext().isPresent()) {
1798                 GroupId groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1799                 GroupInfo group = getGroup(groupId);
1800                 if (group != null && group.isBlocked()) {
1801                     return true;
1802                 }
1803             }
1804         }
1805         return false;
1806     }
1807
1808     private boolean isNotAGroupMember(
1809             SignalServiceEnvelope envelope, SignalServiceContent content
1810     ) {
1811         SignalServiceAddress source;
1812         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1813             source = envelope.getSourceAddress();
1814         } else if (content != null) {
1815             source = content.getSender();
1816         } else {
1817             return false;
1818         }
1819
1820         if (content != null && content.getDataMessage().isPresent()) {
1821             SignalServiceDataMessage message = content.getDataMessage().get();
1822             if (message.getGroupContext().isPresent()) {
1823                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1824                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1825                     if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
1826                         return false;
1827                     }
1828                 }
1829                 GroupId groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1830                 GroupInfo group = getGroup(groupId);
1831                 if (group != null && !group.isMember(source)) {
1832                     return true;
1833                 }
1834             }
1835         }
1836         return false;
1837     }
1838
1839     private List<HandleAction> handleMessage(
1840             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
1841     ) {
1842         List<HandleAction> actions = new ArrayList<>();
1843         if (content != null) {
1844             final SignalServiceAddress sender;
1845             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1846                 sender = envelope.getSourceAddress();
1847             } else {
1848                 sender = content.getSender();
1849             }
1850             // Store uuid if we don't have it already
1851             resolveSignalServiceAddress(sender);
1852
1853             if (content.getDataMessage().isPresent()) {
1854                 SignalServiceDataMessage message = content.getDataMessage().get();
1855
1856                 if (content.isNeedsReceipt()) {
1857                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1858                 }
1859
1860                 actions.addAll(handleSignalServiceDataMessage(message,
1861                         false,
1862                         sender,
1863                         account.getSelfAddress(),
1864                         ignoreAttachments));
1865             }
1866             if (content.getSyncMessage().isPresent()) {
1867                 account.setMultiDevice(true);
1868                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1869                 if (syncMessage.getSent().isPresent()) {
1870                     SentTranscriptMessage message = syncMessage.getSent().get();
1871                     final SignalServiceAddress destination = message.getDestination().orNull();
1872                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
1873                             true,
1874                             sender,
1875                             destination,
1876                             ignoreAttachments));
1877                 }
1878                 if (syncMessage.getRequest().isPresent()) {
1879                     RequestMessage rm = syncMessage.getRequest().get();
1880                     if (rm.isContactsRequest()) {
1881                         actions.add(SendSyncContactsAction.create());
1882                     }
1883                     if (rm.isGroupsRequest()) {
1884                         actions.add(SendSyncGroupsAction.create());
1885                     }
1886                     if (rm.isBlockedListRequest()) {
1887                         actions.add(SendSyncBlockedListAction.create());
1888                     }
1889                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
1890                 }
1891                 if (syncMessage.getGroups().isPresent()) {
1892                     File tmpFile = null;
1893                     try {
1894                         tmpFile = IOUtils.createTempFile();
1895                         final SignalServiceAttachment groupsMessage = syncMessage.getGroups().get();
1896                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(groupsMessage.asPointer(),
1897                                 tmpFile)) {
1898                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1899                             DeviceGroup g;
1900                             while ((g = s.read()) != null) {
1901                                 GroupInfoV1 syncGroup = account.getGroupStore()
1902                                         .getOrCreateGroupV1(GroupId.v1(g.getId()));
1903                                 if (syncGroup != null) {
1904                                     if (g.getName().isPresent()) {
1905                                         syncGroup.name = g.getName().get();
1906                                     }
1907                                     syncGroup.addMembers(g.getMembers()
1908                                             .stream()
1909                                             .map(this::resolveSignalServiceAddress)
1910                                             .collect(Collectors.toSet()));
1911                                     if (!g.isActive()) {
1912                                         syncGroup.removeMember(account.getSelfAddress());
1913                                     } else {
1914                                         // Add ourself to the member set as it's marked as active
1915                                         syncGroup.addMembers(List.of(account.getSelfAddress()));
1916                                     }
1917                                     syncGroup.blocked = g.isBlocked();
1918                                     if (g.getColor().isPresent()) {
1919                                         syncGroup.color = g.getColor().get();
1920                                     }
1921
1922                                     if (g.getAvatar().isPresent()) {
1923                                         downloadGroupAvatar(g.getAvatar().get(), syncGroup.getGroupId());
1924                                     }
1925                                     syncGroup.inboxPosition = g.getInboxPosition().orNull();
1926                                     syncGroup.archived = g.isArchived();
1927                                     account.getGroupStore().updateGroup(syncGroup);
1928                                 }
1929                             }
1930                         }
1931                     } catch (Exception e) {
1932                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
1933                                 tmpFile,
1934                                 e.getMessage());
1935                     } finally {
1936                         if (tmpFile != null) {
1937                             try {
1938                                 Files.delete(tmpFile.toPath());
1939                             } catch (IOException e) {
1940                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
1941                                         tmpFile,
1942                                         e.getMessage());
1943                             }
1944                         }
1945                     }
1946                 }
1947                 if (syncMessage.getBlockedList().isPresent()) {
1948                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1949                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1950                         setContactBlocked(resolveSignalServiceAddress(address), true);
1951                     }
1952                     for (GroupId groupId : blockedListMessage.getGroupIds()
1953                             .stream()
1954                             .map(GroupId::unknownVersion)
1955                             .collect(Collectors.toSet())) {
1956                         try {
1957                             setGroupBlocked(groupId, true);
1958                         } catch (GroupNotFoundException e) {
1959                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
1960                                     groupId.toBase64());
1961                         }
1962                     }
1963                 }
1964                 if (syncMessage.getContacts().isPresent()) {
1965                     File tmpFile = null;
1966                     try {
1967                         tmpFile = IOUtils.createTempFile();
1968                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1969                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
1970                                 .asPointer(), tmpFile)) {
1971                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1972                             if (contactsMessage.isComplete()) {
1973                                 account.getContactStore().clear();
1974                             }
1975                             DeviceContact c;
1976                             while ((c = s.read()) != null) {
1977                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1978                                     account.setProfileKey(c.getProfileKey().get());
1979                                 }
1980                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1981                                 ContactInfo contact = account.getContactStore().getContact(address);
1982                                 if (contact == null) {
1983                                     contact = new ContactInfo(address);
1984                                 }
1985                                 if (c.getName().isPresent()) {
1986                                     contact.name = c.getName().get();
1987                                 }
1988                                 if (c.getColor().isPresent()) {
1989                                     contact.color = c.getColor().get();
1990                                 }
1991                                 if (c.getProfileKey().isPresent()) {
1992                                     account.getProfileStore().storeProfileKey(address, c.getProfileKey().get());
1993                                 }
1994                                 if (c.getVerified().isPresent()) {
1995                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1996                                     account.getSignalProtocolStore()
1997                                             .setIdentityTrustLevel(verifiedMessage.getDestination(),
1998                                                     verifiedMessage.getIdentityKey(),
1999                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2000                                 }
2001                                 if (c.getExpirationTimer().isPresent()) {
2002                                     contact.messageExpirationTime = c.getExpirationTimer().get();
2003                                 }
2004                                 contact.blocked = c.isBlocked();
2005                                 contact.inboxPosition = c.getInboxPosition().orNull();
2006                                 contact.archived = c.isArchived();
2007                                 account.getContactStore().updateContact(contact);
2008
2009                                 if (c.getAvatar().isPresent()) {
2010                                     downloadContactAvatar(c.getAvatar().get(), contact.getAddress());
2011                                 }
2012                             }
2013                         }
2014                     } catch (Exception e) {
2015                         logger.warn("Failed to handle received sync contacts “{}”, ignoring: {}",
2016                                 tmpFile,
2017                                 e.getMessage());
2018                     } finally {
2019                         if (tmpFile != null) {
2020                             try {
2021                                 Files.delete(tmpFile.toPath());
2022                             } catch (IOException e) {
2023                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2024                                         tmpFile,
2025                                         e.getMessage());
2026                             }
2027                         }
2028                     }
2029                 }
2030                 if (syncMessage.getVerified().isPresent()) {
2031                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
2032                     account.getSignalProtocolStore()
2033                             .setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()),
2034                                     verifiedMessage.getIdentityKey(),
2035                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2036                 }
2037                 if (syncMessage.getStickerPackOperations().isPresent()) {
2038                     final List<StickerPackOperationMessage> stickerPackOperationMessages = syncMessage.getStickerPackOperations()
2039                             .get();
2040                     for (StickerPackOperationMessage m : stickerPackOperationMessages) {
2041                         if (!m.getPackId().isPresent()) {
2042                             continue;
2043                         }
2044                         Sticker sticker = account.getStickerStore().getSticker(m.getPackId().get());
2045                         if (sticker == null) {
2046                             if (!m.getPackKey().isPresent()) {
2047                                 continue;
2048                             }
2049                             sticker = new Sticker(m.getPackId().get(), m.getPackKey().get());
2050                         }
2051                         sticker.setInstalled(!m.getType().isPresent()
2052                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2053                         account.getStickerStore().updateSticker(sticker);
2054                     }
2055                 }
2056                 if (syncMessage.getFetchType().isPresent()) {
2057                     switch (syncMessage.getFetchType().get()) {
2058                         case LOCAL_PROFILE:
2059                             getRecipientProfile(getSelfAddress(), true);
2060                         case STORAGE_MANIFEST:
2061                             // TODO
2062                     }
2063                 }
2064                 if (syncMessage.getKeys().isPresent()) {
2065                     final KeysMessage keysMessage = syncMessage.getKeys().get();
2066                     if (keysMessage.getStorageService().isPresent()) {
2067                         final StorageKey storageKey = keysMessage.getStorageService().get();
2068                         account.setStorageKey(storageKey);
2069                     }
2070                 }
2071                 if (syncMessage.getConfiguration().isPresent()) {
2072                     // TODO
2073                 }
2074             }
2075         }
2076         return actions;
2077     }
2078
2079     private void downloadContactAvatar(SignalServiceAttachment avatar, SignalServiceAddress address) {
2080         try {
2081             avatarStore.storeContactAvatar(address, outputStream -> retrieveAttachment(avatar, outputStream));
2082         } catch (IOException e) {
2083             logger.warn("Failed to download avatar for contact {}, ignoring: {}", address, e.getMessage());
2084         }
2085     }
2086
2087     private void downloadGroupAvatar(SignalServiceAttachment avatar, GroupId groupId) {
2088         try {
2089             avatarStore.storeGroupAvatar(groupId, outputStream -> retrieveAttachment(avatar, outputStream));
2090         } catch (IOException e) {
2091             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2092         }
2093     }
2094
2095     private void downloadGroupAvatar(GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey) {
2096         try {
2097             avatarStore.storeGroupAvatar(groupId,
2098                     outputStream -> retrieveGroupV2Avatar(groupSecretParams, cdnKey, outputStream));
2099         } catch (IOException e) {
2100             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2101         }
2102     }
2103
2104     private void downloadProfileAvatar(
2105             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2106     ) {
2107         try {
2108             avatarStore.storeProfileAvatar(address,
2109                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
2110         } catch (Throwable e) {
2111             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
2112         }
2113     }
2114
2115     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2116         return attachmentStore.getAttachmentFile(attachmentId);
2117     }
2118
2119     private void downloadAttachment(final SignalServiceAttachment attachment) {
2120         if (!attachment.isPointer()) {
2121             logger.warn("Invalid state, can't store an attachment stream.");
2122         }
2123
2124         SignalServiceAttachmentPointer pointer = attachment.asPointer();
2125         if (pointer.getPreview().isPresent()) {
2126             final byte[] preview = pointer.getPreview().get();
2127             try {
2128                 attachmentStore.storeAttachmentPreview(pointer.getRemoteId(),
2129                         outputStream -> outputStream.write(preview, 0, preview.length));
2130             } catch (IOException e) {
2131                 logger.warn("Failed to download attachment preview, ignoring: {}", e.getMessage());
2132             }
2133         }
2134
2135         try {
2136             attachmentStore.storeAttachment(pointer.getRemoteId(),
2137                     outputStream -> retrieveAttachmentPointer(pointer, outputStream));
2138         } catch (IOException e) {
2139             logger.warn("Failed to download attachment ({}), ignoring: {}", pointer.getRemoteId(), e.getMessage());
2140         }
2141     }
2142
2143     private void retrieveGroupV2Avatar(
2144             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
2145     ) throws IOException {
2146         GroupsV2Operations.GroupOperations groupOperations = groupsV2Operations.forGroup(groupSecretParams);
2147
2148         File tmpFile = IOUtils.createTempFile();
2149         try (InputStream input = messageReceiver.retrieveGroupsV2ProfileAvatar(cdnKey,
2150                 tmpFile,
2151                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2152             byte[] encryptedData = IOUtils.readFully(input);
2153
2154             byte[] decryptedData = groupOperations.decryptAvatar(encryptedData);
2155             outputStream.write(decryptedData);
2156         } finally {
2157             try {
2158                 Files.delete(tmpFile.toPath());
2159             } catch (IOException e) {
2160                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2161                         tmpFile,
2162                         e.getMessage());
2163             }
2164         }
2165     }
2166
2167     private void retrieveProfileAvatar(
2168             String avatarPath, ProfileKey profileKey, OutputStream outputStream
2169     ) throws IOException {
2170         File tmpFile = IOUtils.createTempFile();
2171         try (InputStream input = messageReceiver.retrieveProfileAvatar(avatarPath,
2172                 tmpFile,
2173                 profileKey,
2174                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2175             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2176             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2177         } finally {
2178             try {
2179                 Files.delete(tmpFile.toPath());
2180             } catch (IOException e) {
2181                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2182                         tmpFile,
2183                         e.getMessage());
2184             }
2185         }
2186     }
2187
2188     private void retrieveAttachment(
2189             final SignalServiceAttachment attachment, final OutputStream outputStream
2190     ) throws IOException {
2191         if (attachment.isPointer()) {
2192             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2193             retrieveAttachmentPointer(pointer, outputStream);
2194         } else {
2195             SignalServiceAttachmentStream stream = attachment.asStream();
2196             IOUtils.copyStream(stream.getInputStream(), outputStream);
2197         }
2198     }
2199
2200     private void retrieveAttachmentPointer(
2201             SignalServiceAttachmentPointer pointer, OutputStream outputStream
2202     ) throws IOException {
2203         File tmpFile = IOUtils.createTempFile();
2204         try (InputStream input = retrieveAttachmentAsStream(pointer, tmpFile)) {
2205             IOUtils.copyStream(input, outputStream);
2206         } catch (MissingConfigurationException | InvalidMessageException e) {
2207             throw new IOException(e);
2208         } finally {
2209             try {
2210                 Files.delete(tmpFile.toPath());
2211             } catch (IOException e) {
2212                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2213                         tmpFile,
2214                         e.getMessage());
2215             }
2216         }
2217     }
2218
2219     private InputStream retrieveAttachmentAsStream(
2220             SignalServiceAttachmentPointer pointer, File tmpFile
2221     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2222         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2223     }
2224
2225     void sendGroups() throws IOException, UntrustedIdentityException {
2226         File groupsFile = IOUtils.createTempFile();
2227
2228         try {
2229             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2230                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
2231                 for (GroupInfo record : getGroups()) {
2232                     if (record instanceof GroupInfoV1) {
2233                         GroupInfoV1 groupInfo = (GroupInfoV1) record;
2234                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2235                                 Optional.fromNullable(groupInfo.name),
2236                                 new ArrayList<>(groupInfo.getMembers()),
2237                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2238                                 groupInfo.isMember(account.getSelfAddress()),
2239                                 Optional.of(groupInfo.messageExpirationTime),
2240                                 Optional.fromNullable(groupInfo.color),
2241                                 groupInfo.blocked,
2242                                 Optional.fromNullable(groupInfo.inboxPosition),
2243                                 groupInfo.archived));
2244                     }
2245                 }
2246             }
2247
2248             if (groupsFile.exists() && groupsFile.length() > 0) {
2249                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
2250                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2251                             .withStream(groupsFileStream)
2252                             .withContentType("application/octet-stream")
2253                             .withLength(groupsFile.length())
2254                             .build();
2255
2256                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2257                 }
2258             }
2259         } finally {
2260             try {
2261                 Files.delete(groupsFile.toPath());
2262             } catch (IOException e) {
2263                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2264             }
2265         }
2266     }
2267
2268     public void sendContacts() throws IOException, UntrustedIdentityException {
2269         File contactsFile = IOUtils.createTempFile();
2270
2271         try {
2272             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2273                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
2274                 for (ContactInfo record : account.getContactStore().getContacts()) {
2275                     VerifiedMessage verifiedMessage = null;
2276                     IdentityInfo currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
2277                     if (currentIdentity != null) {
2278                         verifiedMessage = new VerifiedMessage(record.getAddress(),
2279                                 currentIdentity.getIdentityKey(),
2280                                 currentIdentity.getTrustLevel().toVerifiedState(),
2281                                 currentIdentity.getDateAdded().getTime());
2282                     }
2283
2284                     ProfileKey profileKey = account.getProfileStore().getProfileKey(record.getAddress());
2285                     out.write(new DeviceContact(record.getAddress(),
2286                             Optional.fromNullable(record.name),
2287                             createContactAvatarAttachment(record.getAddress()),
2288                             Optional.fromNullable(record.color),
2289                             Optional.fromNullable(verifiedMessage),
2290                             Optional.fromNullable(profileKey),
2291                             record.blocked,
2292                             Optional.of(record.messageExpirationTime),
2293                             Optional.fromNullable(record.inboxPosition),
2294                             record.archived));
2295                 }
2296
2297                 if (account.getProfileKey() != null) {
2298                     // Send our own profile key as well
2299                     out.write(new DeviceContact(account.getSelfAddress(),
2300                             Optional.absent(),
2301                             Optional.absent(),
2302                             Optional.absent(),
2303                             Optional.absent(),
2304                             Optional.of(account.getProfileKey()),
2305                             false,
2306                             Optional.absent(),
2307                             Optional.absent(),
2308                             false));
2309                 }
2310             }
2311
2312             if (contactsFile.exists() && contactsFile.length() > 0) {
2313                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
2314                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2315                             .withStream(contactsFileStream)
2316                             .withContentType("application/octet-stream")
2317                             .withLength(contactsFile.length())
2318                             .build();
2319
2320                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2321                 }
2322             }
2323         } finally {
2324             try {
2325                 Files.delete(contactsFile.toPath());
2326             } catch (IOException e) {
2327                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2328             }
2329         }
2330     }
2331
2332     void sendBlockedList() throws IOException, UntrustedIdentityException {
2333         List<SignalServiceAddress> addresses = new ArrayList<>();
2334         for (ContactInfo record : account.getContactStore().getContacts()) {
2335             if (record.blocked) {
2336                 addresses.add(record.getAddress());
2337             }
2338         }
2339         List<byte[]> groupIds = new ArrayList<>();
2340         for (GroupInfo record : getGroups()) {
2341             if (record.isBlocked()) {
2342                 groupIds.add(record.getGroupId().serialize());
2343             }
2344         }
2345         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2346     }
2347
2348     private void sendVerifiedMessage(
2349             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2350     ) throws IOException, UntrustedIdentityException {
2351         VerifiedMessage verifiedMessage = new VerifiedMessage(destination,
2352                 identityKey,
2353                 trustLevel.toVerifiedState(),
2354                 System.currentTimeMillis());
2355         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2356     }
2357
2358     public List<ContactInfo> getContacts() {
2359         return account.getContactStore().getContacts();
2360     }
2361
2362     public String getContactOrProfileName(String number) {
2363         final SignalServiceAddress address = Utils.getSignalServiceAddressFromIdentifier(number);
2364
2365         final ContactInfo contact = account.getContactStore().getContact(address);
2366         if (contact != null && !Util.isEmpty(contact.name)) {
2367             return contact.name;
2368         }
2369
2370         final SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
2371         if (profileEntry != null && profileEntry.getProfile() != null) {
2372             return profileEntry.getProfile().getName();
2373         }
2374
2375         return null;
2376     }
2377
2378     public GroupInfo getGroup(GroupId groupId) {
2379         final GroupInfo group = account.getGroupStore().getGroup(groupId);
2380         if (group instanceof GroupInfoV2 && ((GroupInfoV2) group).getGroup() == null) {
2381             final GroupSecretParams groupSecretParams = GroupSecretParams.deriveFromMasterKey(((GroupInfoV2) group).getMasterKey());
2382             ((GroupInfoV2) group).setGroup(groupHelper.getDecryptedGroup(groupSecretParams));
2383             account.getGroupStore().updateGroup(group);
2384         }
2385         return group;
2386     }
2387
2388     public List<IdentityInfo> getIdentities() {
2389         return account.getSignalProtocolStore().getIdentities();
2390     }
2391
2392     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2393         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
2394     }
2395
2396     /**
2397      * Trust this the identity with this fingerprint
2398      *
2399      * @param name        username of the identity
2400      * @param fingerprint Fingerprint
2401      */
2402     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2403         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2404         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2405         if (ids == null) {
2406             return false;
2407         }
2408         for (IdentityInfo id : ids) {
2409             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
2410                 continue;
2411             }
2412
2413             account.getSignalProtocolStore()
2414                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2415             try {
2416                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2417             } catch (IOException | UntrustedIdentityException e) {
2418                 logger.warn("Failed to send verification sync message: {}", e.getMessage());
2419             }
2420             account.save();
2421             return true;
2422         }
2423         return false;
2424     }
2425
2426     /**
2427      * Trust this the identity with this safety number
2428      *
2429      * @param name         username of the identity
2430      * @param safetyNumber Safety number
2431      */
2432     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2433         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2434         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2435         if (ids == null) {
2436             return false;
2437         }
2438         for (IdentityInfo id : ids) {
2439             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2440                 continue;
2441             }
2442
2443             account.getSignalProtocolStore()
2444                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2445             try {
2446                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2447             } catch (IOException | UntrustedIdentityException e) {
2448                 logger.warn("Failed to send verification sync message: {}", e.getMessage());
2449             }
2450             account.save();
2451             return true;
2452         }
2453         return false;
2454     }
2455
2456     /**
2457      * Trust all keys of this identity without verification
2458      *
2459      * @param name username of the identity
2460      */
2461     public boolean trustIdentityAllKeys(String name) {
2462         SignalServiceAddress address = resolveSignalServiceAddress(name);
2463         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2464         if (ids == null) {
2465             return false;
2466         }
2467         for (IdentityInfo id : ids) {
2468             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2469                 account.getSignalProtocolStore()
2470                         .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2471                 try {
2472                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2473                 } catch (IOException | UntrustedIdentityException e) {
2474                     logger.warn("Failed to send verification sync message: {}", e.getMessage());
2475                 }
2476             }
2477         }
2478         account.save();
2479         return true;
2480     }
2481
2482     public String computeSafetyNumber(
2483             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2484     ) {
2485         return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
2486                 account.getSelfAddress(),
2487                 getIdentityKeyPair().getPublicKey(),
2488                 theirAddress,
2489                 theirIdentityKey);
2490     }
2491
2492     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2493         String canonicalizedNumber = UuidUtil.isUuid(identifier)
2494                 ? identifier
2495                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2496         return resolveSignalServiceAddress(canonicalizedNumber);
2497     }
2498
2499     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2500         SignalServiceAddress address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2501
2502         return resolveSignalServiceAddress(address);
2503     }
2504
2505     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2506         if (address.matches(account.getSelfAddress())) {
2507             return account.getSelfAddress();
2508         }
2509
2510         return account.getRecipientStore().resolveServiceAddress(address);
2511     }
2512
2513     @Override
2514     public void close() throws IOException {
2515         close(true);
2516     }
2517
2518     void close(boolean closeAccount) throws IOException {
2519         if (messagePipe != null) {
2520             messagePipe.shutdown();
2521             messagePipe = null;
2522         }
2523
2524         if (unidentifiedMessagePipe != null) {
2525             unidentifiedMessagePipe.shutdown();
2526             unidentifiedMessagePipe = null;
2527         }
2528
2529         if (closeAccount && account != null) {
2530             account.close();
2531         }
2532         account = null;
2533     }
2534
2535     public interface ReceiveMessageHandler {
2536
2537         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2538     }
2539 }