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.ecc.ECPublicKey;
  80 import org.whispersystems.libsignal.state.PreKeyRecord;
  81 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  82 import org.whispersystems.libsignal.util.Pair;
  83 import org.whispersystems.libsignal.util.guava.Optional;
  84 import org.whispersystems.signalservice.api.KeyBackupService;
  85 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  86 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  87 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  88 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  89 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  90 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  91 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  92 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  93 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  94 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
  95 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  96 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  97 import org.whispersystems.signalservice.api.kbs.MasterKey;
  98 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  99 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
 100 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
 101 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
 102 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
 103 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
 104 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
 105 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
 106 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
 107 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
 108 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
 109 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
 110 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
 111 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 112 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 113 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 114 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 115 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 116 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 117 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 118 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 119 import org.whispersystems.signalservice.api.messages.multidevice.KeysMessage;
 120 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 121 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 122 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 123 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 124 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 125 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 126 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 127 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 128 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 129 import org.whispersystems.signalservice.api.storage.StorageKey;
 130 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 131 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
 132 import org.whispersystems.signalservice.api.util.SleepTimer;
 133 import org.whispersystems.signalservice.api.util.StreamDetails;
 134 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 135 import org.whispersystems.signalservice.api.util.UuidUtil;
 136 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 137 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 138 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 139 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 140 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 141 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 142 import org.whispersystems.signalservice.internal.util.Hex;
 143 import org.whispersystems.signalservice.internal.util.Util;
 144
 145 import java.io.Closeable;
 146 import java.io.File;
 147 import java.io.FileInputStream;
 148 import java.io.FileOutputStream;
 149 import java.io.IOException;
 150 import java.io.InputStream;
 151 import java.io.OutputStream;
 152 import java.net.URI;
 153 import java.net.URISyntaxException;
 154 import java.net.URLEncoder;
 155 import java.nio.charset.StandardCharsets;
 156 import java.nio.file.Files;
 157 import java.security.SignatureException;
 158 import java.util.ArrayList;
 159 import java.util.Arrays;
 160 import java.util.Collection;
 161 import java.util.Date;
 162 import java.util.HashMap;
 163 import java.util.HashSet;
 164 import java.util.List;
 165 import java.util.Map;
 166 import java.util.Set;
 167 import java.util.UUID;
 168 import java.util.concurrent.ExecutorService;
 169 import java.util.concurrent.Executors;
 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 final ExecutorService executor = Executors.newCachedThreadPool();
 193
 194     private SignalServiceMessagePipe messagePipe = null;
 195     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 196
 197     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 198     private final ProfileHelper profileHelper;
 199     private final GroupHelper groupHelper;
 200     private final PinHelper pinHelper;
 201     private final AvatarStore avatarStore;
 202     private final AttachmentStore attachmentStore;
 203
 204     Manager(
 205             SignalAccount account,
 206             PathConfig pathConfig,
 207             ServiceEnvironmentConfig serviceEnvironmentConfig,
 208             String userAgent
 209     ) {
 210         this.account = account;
 211         this.serviceEnvironmentConfig = serviceEnvironmentConfig;
 212         this.certificateValidator = new CertificateValidator(serviceEnvironmentConfig.getUnidentifiedSenderTrustRoot());
 213         this.userAgent = userAgent;
 214         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 215                 serviceEnvironmentConfig.getSignalServiceConfiguration())) : null;
 216         final SleepTimer timer = new UptimeSleepTimer();
 217         this.accountManager = new SignalServiceAccountManager(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 218                 new DynamicCredentialsProvider(account.getUuid(),
 219                         account.getUsername(),
 220                         account.getPassword(),
 221                         account.getDeviceId()),
 222                 userAgent,
 223                 groupsV2Operations,
 224                 ServiceConfig.AUTOMATIC_NETWORK_RETRY,
 225                 timer);
 226         this.groupsV2Api = accountManager.getGroupsV2Api();
 227         final KeyBackupService keyBackupService = accountManager.getKeyBackupService(ServiceConfig.getIasKeyStore(),
 228                 serviceEnvironmentConfig.getKeyBackupConfig().getEnclaveName(),
 229                 serviceEnvironmentConfig.getKeyBackupConfig().getServiceId(),
 230                 serviceEnvironmentConfig.getKeyBackupConfig().getMrenclave(),
 231                 10);
 232
 233         this.pinHelper = new PinHelper(keyBackupService);
 234         this.clientZkProfileOperations = capabilities.isGv2()
 235                 ? ClientZkOperations.create(serviceEnvironmentConfig.getSignalServiceConfiguration())
 236                 .getProfileOperations()
 237                 : null;
 238         this.messageReceiver = new SignalServiceMessageReceiver(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 239                 account.getUuid(),
 240                 account.getUsername(),
 241                 account.getPassword(),
 242                 account.getDeviceId(),
 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(null,
 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 name       if null, the previous name will be kept
 366      * @param about      if null, the previous about text will be kept
 367      * @param aboutEmoji if null, the previous about emoji will be kept
 368      * @param avatar     if avatar is null the image from the local avatar store is used (if present),
 369      *                   if it's Optional.absent(), the avatar will be removed
 370      */
 371     public void setProfile(String name, String about, String aboutEmoji, Optional<File> avatar) throws IOException {
 372         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(getSelfAddress());
 373         SignalProfile profile = profileEntry == null ? null : profileEntry.getProfile();
 374         SignalProfile newProfile = new SignalProfile(profile == null ? null : profile.getIdentityKey(),
 375                 name != null ? name : profile == null || profile.getName() == null ? "" : profile.getName(),
 376                 about != null ? about : profile == null || profile.getAbout() == null ? "" : profile.getAbout(),
 377                 aboutEmoji != null
 378                         ? aboutEmoji
 379                         : profile == null || profile.getAboutEmoji() == null ? "" : profile.getAboutEmoji(),
 380                 profile == null ? null : profile.getUnidentifiedAccess(),
 381                 account.isUnrestrictedUnidentifiedAccess(),
 382                 profile == null ? null : profile.getCapabilities());
 383
 384         try (final StreamDetails streamDetails = avatar == null
 385                 ? avatarStore.retrieveProfileAvatar(getSelfAddress())
 386                 : avatar.isPresent() ? Utils.createStreamDetailsFromFile(avatar.get()) : null) {
 387             accountManager.setVersionedProfile(account.getUuid(),
 388                     account.getProfileKey(),
 389                     newProfile.getName(),
 390                     newProfile.getAbout(),
 391                     newProfile.getAboutEmoji(),
 392                     streamDetails);
 393         }
 394
 395         if (avatar != null) {
 396             if (avatar.isPresent()) {
 397                 avatarStore.storeProfileAvatar(getSelfAddress(),
 398                         outputStream -> IOUtils.copyFileToStream(avatar.get(), outputStream));
 399             } else {
 400                 avatarStore.deleteProfileAvatar(getSelfAddress());
 401             }
 402         }
 403         account.getProfileStore()
 404                 .updateProfile(getSelfAddress(),
 405                         account.getProfileKey(),
 406                         System.currentTimeMillis(),
 407                         newProfile,
 408                         profileEntry == null ? null : profileEntry.getProfileKeyCredential());
 409
 410         try {
 411             sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
 412         } catch (UntrustedIdentityException ignored) {
 413         }
 414     }
 415
 416     public void unregister() throws IOException {
 417         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 418         // If this is the master device, other users can't send messages to this number anymore.
 419         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 420         accountManager.setGcmId(Optional.absent());
 421         accountManager.deleteAccount();
 422
 423         account.setRegistered(false);
 424         account.save();
 425     }
 426
 427     public List<DeviceInfo> getLinkedDevices() throws IOException {
 428         List<DeviceInfo> devices = accountManager.getDevices();
 429         account.setMultiDevice(devices.size() > 1);
 430         account.save();
 431         return devices;
 432     }
 433
 434     public void removeLinkedDevices(int deviceId) throws IOException {
 435         accountManager.removeDevice(deviceId);
 436         List<DeviceInfo> devices = accountManager.getDevices();
 437         account.setMultiDevice(devices.size() > 1);
 438         account.save();
 439     }
 440
 441     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 442         DeviceLinkInfo info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 443
 444         addDevice(info.deviceIdentifier, info.deviceKey);
 445     }
 446
 447     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 448         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 449         String verificationCode = accountManager.getNewDeviceVerificationCode();
 450
 451         accountManager.addDevice(deviceIdentifier,
 452                 deviceKey,
 453                 identityKeyPair,
 454                 Optional.of(account.getProfileKey().serialize()),
 455                 verificationCode);
 456         account.setMultiDevice(true);
 457         account.save();
 458     }
 459
 460     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 461         if (!account.isMasterDevice()) {
 462             throw new RuntimeException("Only master device can set a PIN");
 463         }
 464         if (pin.isPresent()) {
 465             final MasterKey masterKey = account.getPinMasterKey() != null
 466                     ? account.getPinMasterKey()
 467                     : KeyUtils.createMasterKey();
 468
 469             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 470
 471             account.setRegistrationLockPin(pin.get());
 472             account.setPinMasterKey(masterKey);
 473         } else {
 474             // Remove legacy registration lock
 475             accountManager.removeRegistrationLockV1();
 476
 477             // Remove KBS Pin
 478             pinHelper.removeRegistrationLockPin();
 479
 480             account.setRegistrationLockPin(null);
 481             account.setPinMasterKey(null);
 482         }
 483         account.save();
 484     }
 485
 486     void refreshPreKeys() throws IOException {
 487         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 488         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 489         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 490
 491         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 492     }
 493
 494     private List<PreKeyRecord> generatePreKeys() {
 495         final int offset = account.getPreKeyIdOffset();
 496
 497         List<PreKeyRecord> records = KeyUtils.generatePreKeyRecords(offset, ServiceConfig.PREKEY_BATCH_SIZE);
 498         account.addPreKeys(records);
 499         account.save();
 500
 501         return records;
 502     }
 503
 504     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 505         final int signedPreKeyId = account.getNextSignedPreKeyId();
 506
 507         SignedPreKeyRecord record = KeyUtils.generateSignedPreKeyRecord(identityKeyPair, signedPreKeyId);
 508         account.addSignedPreKey(record);
 509         account.save();
 510
 511         return record;
 512     }
 513
 514     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 515         if (messagePipe == null) {
 516             messagePipe = messageReceiver.createMessagePipe();
 517         }
 518         return messagePipe;
 519     }
 520
 521     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 522         if (unidentifiedMessagePipe == null) {
 523             unidentifiedMessagePipe = messageReceiver.createUnidentifiedMessagePipe();
 524         }
 525         return unidentifiedMessagePipe;
 526     }
 527
 528     private SignalServiceMessageSender createMessageSender() {
 529         return new SignalServiceMessageSender(serviceEnvironmentConfig.getSignalServiceConfiguration(),
 530                 account.getUuid(),
 531                 account.getUsername(),
 532                 account.getPassword(),
 533                 account.getDeviceId(),
 534                 account.getSignalProtocolStore(),
 535                 userAgent,
 536                 account.isMultiDevice(),
 537                 Optional.fromNullable(messagePipe),
 538                 Optional.fromNullable(unidentifiedMessagePipe),
 539                 Optional.absent(),
 540                 clientZkProfileOperations,
 541                 executor,
 542                 ServiceConfig.MAX_ENVELOPE_SIZE,
 543                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 544     }
 545
 546     private SignalProfile getRecipientProfile(
 547             SignalServiceAddress address
 548     ) {
 549         return getRecipientProfile(address, false);
 550     }
 551
 552     private SignalProfile getRecipientProfile(
 553             SignalServiceAddress address, boolean force
 554     ) {
 555         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 556         if (profileEntry == null) {
 557             return null;
 558         }
 559         long now = new Date().getTime();
 560         // Profiles are cached for 24h before retrieving them again
 561         if (!profileEntry.isRequestPending() && (
 562                 force
 563                         || profileEntry.getProfile() == null
 564                         || now - profileEntry.getLastUpdateTimestamp() > 24 * 60 * 60 * 1000
 565         )) {
 566             profileEntry.setRequestPending(true);
 567             final SignalServiceProfile encryptedProfile;
 568             try {
 569                 encryptedProfile = profileHelper.retrieveProfileSync(address, SignalServiceProfile.RequestType.PROFILE)
 570                         .getProfile();
 571             } catch (IOException e) {
 572                 logger.warn("Failed to retrieve profile, ignoring: {}", e.getMessage());
 573                 return null;
 574             } finally {
 575                 profileEntry.setRequestPending(false);
 576             }
 577
 578             final ProfileKey profileKey = profileEntry.getProfileKey();
 579             final SignalProfile profile = decryptProfileAndDownloadAvatar(address, profileKey, encryptedProfile);
 580             account.getProfileStore()
 581                     .updateProfile(address, profileKey, now, profile, profileEntry.getProfileKeyCredential());
 582             return profile;
 583         }
 584         return profileEntry.getProfile();
 585     }
 586
 587     private ProfileKeyCredential getRecipientProfileKeyCredential(SignalServiceAddress address) {
 588         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 589         if (profileEntry == null) {
 590             return null;
 591         }
 592         if (profileEntry.getProfileKeyCredential() == null) {
 593             ProfileAndCredential profileAndCredential;
 594             try {
 595                 profileAndCredential = profileHelper.retrieveProfileSync(address,
 596                         SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 597             } catch (IOException e) {
 598                 logger.warn("Failed to retrieve profile key credential, ignoring: {}", e.getMessage());
 599                 return null;
 600             }
 601
 602             long now = new Date().getTime();
 603             final ProfileKeyCredential profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 604             final SignalProfile profile = decryptProfileAndDownloadAvatar(address,
 605                     profileEntry.getProfileKey(),
 606                     profileAndCredential.getProfile());
 607             account.getProfileStore()
 608                     .updateProfile(address, profileEntry.getProfileKey(), now, profile, profileKeyCredential);
 609             return profileKeyCredential;
 610         }
 611         return profileEntry.getProfileKeyCredential();
 612     }
 613
 614     private SignalProfile decryptProfileAndDownloadAvatar(
 615             final SignalServiceAddress address, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 616     ) {
 617         if (encryptedProfile.getAvatar() != null) {
 618             downloadProfileAvatar(address, encryptedProfile.getAvatar(), profileKey);
 619         }
 620
 621         return ProfileUtils.decryptProfile(profileKey, encryptedProfile);
 622     }
 623
 624     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(GroupId groupId) throws IOException {
 625         final StreamDetails streamDetails = avatarStore.retrieveGroupAvatar(groupId);
 626         if (streamDetails == null) {
 627             return Optional.absent();
 628         }
 629
 630         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 631     }
 632
 633     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(SignalServiceAddress address) throws IOException {
 634         final StreamDetails streamDetails = avatarStore.retrieveContactAvatar(address);
 635         if (streamDetails == null) {
 636             return Optional.absent();
 637         }
 638
 639         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 640     }
 641
 642     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 643         GroupInfo g = getGroup(groupId);
 644         if (g == null) {
 645             throw new GroupNotFoundException(groupId);
 646         }
 647         if (!g.isMember(account.getSelfAddress())) {
 648             throw new NotAGroupMemberException(groupId, g.getTitle());
 649         }
 650         return g;
 651     }
 652
 653     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 654         GroupInfo g = getGroup(groupId);
 655         if (g == null) {
 656             throw new GroupNotFoundException(groupId);
 657         }
 658         if (!g.isMember(account.getSelfAddress()) && !g.isPendingMember(account.getSelfAddress())) {
 659             throw new NotAGroupMemberException(groupId, g.getTitle());
 660         }
 661         return g;
 662     }
 663
 664     public List<GroupInfo> getGroups() {
 665         return account.getGroupStore().getGroups();
 666     }
 667
 668     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 669             String messageText, List<String> attachments, GroupId groupId
 670     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 671         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 672                 .withBody(messageText);
 673         if (attachments != null) {
 674             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 675         }
 676
 677         return sendGroupMessage(messageBuilder, groupId);
 678     }
 679
 680     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 681             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, GroupId groupId
 682     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 683         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
 684                 remove,
 685                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 686                 targetSentTimestamp);
 687         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 688                 .withReaction(reaction);
 689
 690         return sendGroupMessage(messageBuilder, groupId);
 691     }
 692
 693     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 694             SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
 695     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 696         final GroupInfo g = getGroupForSending(groupId);
 697
 698         GroupUtils.setGroupContext(messageBuilder, g);
 699         messageBuilder.withExpiration(g.getMessageExpirationTime());
 700
 701         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 702     }
 703
 704     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(GroupId groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 705         SignalServiceDataMessage.Builder messageBuilder;
 706
 707         final GroupInfo g = getGroupForUpdating(groupId);
 708         if (g instanceof GroupInfoV1) {
 709             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
 710             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 711                     .withId(groupId.serialize())
 712                     .build();
 713             messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 714             groupInfoV1.removeMember(account.getSelfAddress());
 715             account.getGroupStore().updateGroup(groupInfoV1);
 716         } else {
 717             final GroupInfoV2 groupInfoV2 = (GroupInfoV2) g;
 718             final Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.leaveGroup(groupInfoV2);
 719             groupInfoV2.setGroup(groupGroupChangePair.first());
 720             messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 721             account.getGroupStore().updateGroup(groupInfoV2);
 722         }
 723
 724         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 725     }
 726
 727     public Pair<GroupId, List<SendMessageResult>> updateGroup(
 728             GroupId groupId, String name, List<String> members, File avatarFile
 729     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 730         return sendUpdateGroupMessage(groupId,
 731                 name,
 732                 members == null ? null : getSignalServiceAddresses(members),
 733                 avatarFile);
 734     }
 735
 736     private Pair<GroupId, List<SendMessageResult>> sendUpdateGroupMessage(
 737             GroupId groupId, String name, Collection<SignalServiceAddress> members, File avatarFile
 738     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 739         GroupInfo g;
 740         SignalServiceDataMessage.Builder messageBuilder;
 741         if (groupId == null) {
 742             // Create new group
 743             GroupInfoV2 gv2 = groupHelper.createGroupV2(name == null ? "" : name,
 744                     members == null ? List.of() : members,
 745                     avatarFile);
 746             if (gv2 == null) {
 747                 GroupInfoV1 gv1 = new GroupInfoV1(GroupIdV1.createRandom());
 748                 gv1.addMembers(List.of(account.getSelfAddress()));
 749                 updateGroupV1(gv1, name, members, avatarFile);
 750                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 751                 g = gv1;
 752             } else {
 753                 if (avatarFile != null) {
 754                     avatarStore.storeGroupAvatar(gv2.getGroupId(),
 755                             outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 756                 }
 757                 messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 758                 g = gv2;
 759             }
 760         } else {
 761             GroupInfo group = getGroupForUpdating(groupId);
 762             if (group instanceof GroupInfoV2) {
 763                 final GroupInfoV2 groupInfoV2 = (GroupInfoV2) group;
 764
 765                 Pair<Long, List<SendMessageResult>> result = null;
 766                 if (groupInfoV2.isPendingMember(getSelfAddress())) {
 767                     Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.acceptInvite(groupInfoV2);
 768                     result = sendUpdateGroupMessage(groupInfoV2,
 769                             groupGroupChangePair.first(),
 770                             groupGroupChangePair.second());
 771                 }
 772
 773                 if (members != null) {
 774                     final Set<SignalServiceAddress> newMembers = new HashSet<>(members);
 775                     newMembers.removeAll(group.getMembers()
 776                             .stream()
 777                             .map(this::resolveSignalServiceAddress)
 778                             .collect(Collectors.toSet()));
 779                     if (newMembers.size() > 0) {
 780                         Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2,
 781                                 newMembers);
 782                         result = sendUpdateGroupMessage(groupInfoV2,
 783                                 groupGroupChangePair.first(),
 784                                 groupGroupChangePair.second());
 785                     }
 786                 }
 787                 if (result == null || name != null || avatarFile != null) {
 788                     Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2,
 789                             name,
 790                             avatarFile);
 791                     if (avatarFile != null) {
 792                         avatarStore.storeGroupAvatar(groupInfoV2.getGroupId(),
 793                                 outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 794                     }
 795                     result = sendUpdateGroupMessage(groupInfoV2,
 796                             groupGroupChangePair.first(),
 797                             groupGroupChangePair.second());
 798                 }
 799
 800                 return new Pair<>(group.getGroupId(), result.second());
 801             } else {
 802                 GroupInfoV1 gv1 = (GroupInfoV1) group;
 803                 updateGroupV1(gv1, name, members, avatarFile);
 804                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 805                 g = gv1;
 806             }
 807         }
 808
 809         account.getGroupStore().updateGroup(g);
 810
 811         final Pair<Long, List<SendMessageResult>> result = sendMessage(messageBuilder,
 812                 g.getMembersIncludingPendingWithout(account.getSelfAddress()));
 813         return new Pair<>(g.getGroupId(), result.second());
 814     }
 815
 816     private void updateGroupV1(
 817             final GroupInfoV1 g,
 818             final String name,
 819             final Collection<SignalServiceAddress> members,
 820             final File avatarFile
 821     ) throws IOException {
 822         if (name != null) {
 823             g.name = name;
 824         }
 825
 826         if (members != null) {
 827             final Set<String> newE164Members = new HashSet<>();
 828             for (SignalServiceAddress member : members) {
 829                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 830                     continue;
 831                 }
 832                 newE164Members.add(member.getNumber().get());
 833             }
 834
 835             final Map<String, UUID> registeredUsers = getRegisteredUsers(newE164Members);
 836             if (registeredUsers.size() != newE164Members.size()) {
 837                 // Some of the new members are not registered on Signal
 838                 newE164Members.removeAll(registeredUsers.keySet());
 839                 throw new IOException("Failed to add members "
 840                         + String.join(", ", newE164Members)
 841                         + " to group: Not registered on Signal");
 842             }
 843
 844             g.addMembers(members);
 845         }
 846
 847         if (avatarFile != null) {
 848             avatarStore.storeGroupAvatar(g.getGroupId(),
 849                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 850         }
 851     }
 852
 853     public Pair<GroupId, List<SendMessageResult>> joinGroup(
 854             GroupInviteLinkUrl inviteLinkUrl
 855     ) throws IOException, GroupLinkNotActiveException {
 856         return sendJoinGroupMessage(inviteLinkUrl);
 857     }
 858
 859     private Pair<GroupId, List<SendMessageResult>> sendJoinGroupMessage(
 860             GroupInviteLinkUrl inviteLinkUrl
 861     ) throws IOException, GroupLinkNotActiveException {
 862         final DecryptedGroupJoinInfo groupJoinInfo = groupHelper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
 863                 inviteLinkUrl.getPassword());
 864         final GroupChange groupChange = groupHelper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
 865                 inviteLinkUrl.getPassword(),
 866                 groupJoinInfo);
 867         final GroupInfoV2 group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
 868                 groupJoinInfo.getRevision() + 1,
 869                 groupChange.toByteArray());
 870
 871         if (group.getGroup() == null) {
 872             // Only requested member, can't send update to group members
 873             return new Pair<>(group.getGroupId(), List.of());
 874         }
 875
 876         final Pair<Long, List<SendMessageResult>> result = sendUpdateGroupMessage(group, group.getGroup(), groupChange);
 877
 878         return new Pair<>(group.getGroupId(), result.second());
 879     }
 880
 881     private static int currentTimeDays() {
 882         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
 883     }
 884
 885     private GroupsV2AuthorizationString getGroupAuthForToday(
 886             final GroupSecretParams groupSecretParams
 887     ) throws IOException {
 888         final int today = currentTimeDays();
 889         // Returns credentials for the next 7 days
 890         final HashMap<Integer, AuthCredentialResponse> credentials = groupsV2Api.getCredentials(today);
 891         // TODO cache credentials until they expire
 892         AuthCredentialResponse authCredentialResponse = credentials.get(today);
 893         try {
 894             return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
 895                     today,
 896                     groupSecretParams,
 897                     authCredentialResponse);
 898         } catch (VerificationFailedException e) {
 899             throw new IOException(e);
 900         }
 901     }
 902
 903     private Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 904             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
 905     ) throws IOException {
 906         group.setGroup(newDecryptedGroup);
 907         final SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(group,
 908                 groupChange.toByteArray());
 909         account.getGroupStore().updateGroup(group);
 910         return sendMessage(messageBuilder, group.getMembersIncludingPendingWithout(account.getSelfAddress()));
 911     }
 912
 913     Pair<Long, List<SendMessageResult>> sendGroupInfoMessage(
 914             GroupIdV1 groupId, SignalServiceAddress recipient
 915     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 916         GroupInfoV1 g;
 917         GroupInfo group = getGroupForSending(groupId);
 918         if (!(group instanceof GroupInfoV1)) {
 919             throw new RuntimeException("Received an invalid group request for a v2 group!");
 920         }
 921         g = (GroupInfoV1) group;
 922
 923         if (!g.isMember(recipient)) {
 924             throw new NotAGroupMemberException(groupId, g.name);
 925         }
 926
 927         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 928
 929         // Send group message only to the recipient who requested it
 930         return sendMessage(messageBuilder, List.of(recipient));
 931     }
 932
 933     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
 934         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 935                 .withId(g.getGroupId().serialize())
 936                 .withName(g.name)
 937                 .withMembers(new ArrayList<>(g.getMembers()));
 938
 939         try {
 940             final Optional<SignalServiceAttachmentStream> attachment = createGroupAvatarAttachment(g.getGroupId());
 941             if (attachment.isPresent()) {
 942                 group.withAvatar(attachment.get());
 943             }
 944         } catch (IOException e) {
 945             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
 946         }
 947
 948         return SignalServiceDataMessage.newBuilder()
 949                 .asGroupMessage(group.build())
 950                 .withExpiration(g.getMessageExpirationTime());
 951     }
 952
 953     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
 954         SignalServiceGroupV2.Builder group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
 955                 .withRevision(g.getGroup().getRevision())
 956                 .withSignedGroupChange(signedGroupChange);
 957         return SignalServiceDataMessage.newBuilder()
 958                 .asGroupMessage(group.build())
 959                 .withExpiration(g.getMessageExpirationTime());
 960     }
 961
 962     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
 963             GroupIdV1 groupId, SignalServiceAddress recipient
 964     ) throws IOException {
 965         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 966                 .withId(groupId.serialize());
 967
 968         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 969                 .asGroupMessage(group.build());
 970
 971         // Send group info request message to the recipient who sent us a message with this groupId
 972         return sendMessage(messageBuilder, List.of(recipient));
 973     }
 974
 975     void sendReceipt(
 976             SignalServiceAddress remoteAddress, long messageId
 977     ) throws IOException, UntrustedIdentityException {
 978         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 979                 List.of(messageId),
 980                 System.currentTimeMillis());
 981
 982         createMessageSender().sendReceipt(remoteAddress,
 983                 unidentifiedAccessHelper.getAccessFor(remoteAddress),
 984                 receiptMessage);
 985     }
 986
 987     public Pair<Long, List<SendMessageResult>> sendMessage(
 988             String messageText, List<String> attachments, List<String> recipients
 989     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
 990         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 991                 .withBody(messageText);
 992         if (attachments != null) {
 993             List<SignalServiceAttachment> attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
 994
 995             // Upload attachments here, so we only upload once even for multiple recipients
 996             SignalServiceMessageSender messageSender = createMessageSender();
 997             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 998             for (SignalServiceAttachment attachment : attachmentStreams) {
 999                 if (attachment.isStream()) {
1000                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
1001                 } else if (attachment.isPointer()) {
1002                     attachmentPointers.add(attachment.asPointer());
1003                 }
1004             }
1005
1006             messageBuilder.withAttachments(attachmentPointers);
1007         }
1008         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1009     }
1010
1011     public Pair<Long, SendMessageResult> sendSelfMessage(
1012             String messageText, List<String> attachments
1013     ) throws IOException, AttachmentInvalidException {
1014         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1015                 .withBody(messageText);
1016         if (attachments != null) {
1017             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
1018         }
1019         return sendSelfMessage(messageBuilder);
1020     }
1021
1022     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
1023             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
1024     ) throws IOException, InvalidNumberException {
1025         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
1026                 remove,
1027                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
1028                 targetSentTimestamp);
1029         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1030                 .withReaction(reaction);
1031         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1032     }
1033
1034     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1035         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
1036
1037         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
1038         try {
1039             return sendMessage(messageBuilder, signalServiceAddresses);
1040         } catch (Exception e) {
1041             for (SignalServiceAddress address : signalServiceAddresses) {
1042                 handleEndSession(address);
1043             }
1044             account.save();
1045             throw e;
1046         }
1047     }
1048
1049     public String getContactName(String number) throws InvalidNumberException {
1050         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
1051         if (contact == null) {
1052             return "";
1053         } else {
1054             return contact.name;
1055         }
1056     }
1057
1058     public void setContactName(String number, String name) throws InvalidNumberException {
1059         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1060         ContactInfo contact = account.getContactStore().getContact(address);
1061         if (contact == null) {
1062             contact = new ContactInfo(address);
1063         }
1064         contact.name = name;
1065         account.getContactStore().updateContact(contact);
1066         account.save();
1067     }
1068
1069     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
1070         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
1071     }
1072
1073     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
1074         ContactInfo contact = account.getContactStore().getContact(address);
1075         if (contact == null) {
1076             contact = new ContactInfo(address);
1077         }
1078         contact.blocked = blocked;
1079         account.getContactStore().updateContact(contact);
1080         account.save();
1081     }
1082
1083     public void setGroupBlocked(final GroupId groupId, final boolean blocked) throws GroupNotFoundException {
1084         GroupInfo group = getGroup(groupId);
1085         if (group == null) {
1086             throw new GroupNotFoundException(groupId);
1087         }
1088
1089         group.setBlocked(blocked);
1090         account.getGroupStore().updateGroup(group);
1091         account.save();
1092     }
1093
1094     /**
1095      * Change the expiration timer for a contact
1096      */
1097     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
1098         ContactInfo contact = account.getContactStore().getContact(address);
1099         contact.messageExpirationTime = messageExpirationTimer;
1100         account.getContactStore().updateContact(contact);
1101         sendExpirationTimerUpdate(address);
1102         account.save();
1103     }
1104
1105     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
1106         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1107                 .asExpirationUpdate();
1108         sendMessage(messageBuilder, List.of(address));
1109     }
1110
1111     /**
1112      * Change the expiration timer for a contact
1113      */
1114     public void setExpirationTimer(
1115             String number, int messageExpirationTimer
1116     ) throws IOException, InvalidNumberException {
1117         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1118         setExpirationTimer(address, messageExpirationTimer);
1119     }
1120
1121     /**
1122      * Change the expiration timer for a group
1123      */
1124     public void setExpirationTimer(GroupId groupId, int messageExpirationTimer) {
1125         GroupInfo g = getGroup(groupId);
1126         if (g instanceof GroupInfoV1) {
1127             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
1128             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1129             account.getGroupStore().updateGroup(groupInfoV1);
1130         } else {
1131             throw new RuntimeException("TODO Not implemented!");
1132         }
1133     }
1134
1135     /**
1136      * Upload the sticker pack from path.
1137      *
1138      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1139      * @return if successful, returns the URL to install the sticker pack in the signal app
1140      */
1141     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1142         SignalServiceStickerManifestUpload manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
1143
1144         SignalServiceMessageSender messageSender = createMessageSender();
1145
1146         byte[] packKey = KeyUtils.createStickerUploadKey();
1147         String packId = messageSender.uploadStickerManifest(manifest, packKey);
1148
1149         Sticker sticker = new Sticker(Hex.fromStringCondensed(packId), packKey);
1150         account.getStickerStore().updateSticker(sticker);
1151         account.save();
1152
1153         try {
1154             return new URI("https",
1155                     "signal.art",
1156                     "/addstickers/",
1157                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1158                             Hex.toStringCondensed(packKey),
1159                             StandardCharsets.UTF_8)).toString();
1160         } catch (URISyntaxException e) {
1161             throw new AssertionError(e);
1162         }
1163     }
1164
1165     void requestSyncGroups() throws IOException {
1166         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1167                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1168                 .build();
1169         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1170         try {
1171             sendSyncMessage(message);
1172         } catch (UntrustedIdentityException e) {
1173             throw new AssertionError(e);
1174         }
1175     }
1176
1177     void requestSyncContacts() throws IOException {
1178         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1179                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1180                 .build();
1181         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1182         try {
1183             sendSyncMessage(message);
1184         } catch (UntrustedIdentityException e) {
1185             throw new AssertionError(e);
1186         }
1187     }
1188
1189     void requestSyncBlocked() throws IOException {
1190         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1191                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1192                 .build();
1193         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1194         try {
1195             sendSyncMessage(message);
1196         } catch (UntrustedIdentityException e) {
1197             throw new AssertionError(e);
1198         }
1199     }
1200
1201     void requestSyncConfiguration() throws IOException {
1202         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1203                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1204                 .build();
1205         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1206         try {
1207             sendSyncMessage(message);
1208         } catch (UntrustedIdentityException e) {
1209             throw new AssertionError(e);
1210         }
1211     }
1212
1213     void requestSyncKeys() throws IOException {
1214         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1215                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
1216                 .build();
1217         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1218         try {
1219             sendSyncMessage(message);
1220         } catch (UntrustedIdentityException e) {
1221             throw new AssertionError(e);
1222         }
1223     }
1224
1225     private byte[] getSenderCertificate() {
1226         // TODO support UUID capable sender certificates
1227         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1228         byte[] certificate;
1229         try {
1230             certificate = accountManager.getSenderCertificate();
1231         } catch (IOException e) {
1232             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1233             return null;
1234         }
1235         // TODO cache for a day
1236         return certificate;
1237     }
1238
1239     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1240         SignalServiceMessageSender messageSender = createMessageSender();
1241         try {
1242             messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1243         } catch (UntrustedIdentityException e) {
1244             account.getSignalProtocolStore()
1245                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1246                             e.getIdentityKey(),
1247                             TrustLevel.UNTRUSTED);
1248             throw e;
1249         }
1250     }
1251
1252     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1253         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1254         final Set<SignalServiceAddress> addressesMissingUuid = new HashSet<>();
1255
1256         for (String number : numbers) {
1257             final SignalServiceAddress resolvedAddress = canonicalizeAndResolveSignalServiceAddress(number);
1258             if (resolvedAddress.getUuid().isPresent()) {
1259                 signalServiceAddresses.add(resolvedAddress);
1260             } else {
1261                 addressesMissingUuid.add(resolvedAddress);
1262             }
1263         }
1264
1265         final Set<String> numbersMissingUuid = addressesMissingUuid.stream()
1266                 .map(a -> a.getNumber().get())
1267                 .collect(Collectors.toSet());
1268         Map<String, UUID> registeredUsers;
1269         try {
1270             registeredUsers = getRegisteredUsers(numbersMissingUuid);
1271         } catch (IOException e) {
1272             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1273             registeredUsers = Map.of();
1274         }
1275
1276         for (SignalServiceAddress address : addressesMissingUuid) {
1277             final String number = address.getNumber().get();
1278             if (registeredUsers.containsKey(number)) {
1279                 final SignalServiceAddress newAddress = resolveSignalServiceAddress(new SignalServiceAddress(
1280                         registeredUsers.get(number),
1281                         number));
1282                 signalServiceAddresses.add(newAddress);
1283             } else {
1284                 signalServiceAddresses.add(address);
1285             }
1286         }
1287
1288         return signalServiceAddresses;
1289     }
1290
1291     private Map<String, UUID> getRegisteredUsers(final Set<String> numbersMissingUuid) throws IOException {
1292         try {
1293             return accountManager.getRegisteredUsers(ServiceConfig.getIasKeyStore(),
1294                     numbersMissingUuid,
1295                     serviceEnvironmentConfig.getCdsMrenclave());
1296         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
1297             throw new IOException(e);
1298         }
1299     }
1300
1301     private Pair<Long, List<SendMessageResult>> sendMessage(
1302             SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients
1303     ) throws IOException {
1304         recipients = recipients.stream().map(this::resolveSignalServiceAddress).collect(Collectors.toSet());
1305         final long timestamp = System.currentTimeMillis();
1306         messageBuilder.withTimestamp(timestamp);
1307         getOrCreateMessagePipe();
1308         getOrCreateUnidentifiedMessagePipe();
1309         SignalServiceDataMessage message = null;
1310         try {
1311             message = messageBuilder.build();
1312             if (message.getGroupContext().isPresent()) {
1313                 try {
1314                     SignalServiceMessageSender messageSender = createMessageSender();
1315                     final boolean isRecipientUpdate = false;
1316                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients),
1317                             unidentifiedAccessHelper.getAccessFor(recipients),
1318                             isRecipientUpdate,
1319                             message);
1320                     for (SendMessageResult r : result) {
1321                         if (r.getIdentityFailure() != null) {
1322                             account.getSignalProtocolStore()
1323                                     .saveIdentity(r.getAddress(),
1324                                             r.getIdentityFailure().getIdentityKey(),
1325                                             TrustLevel.UNTRUSTED);
1326                         }
1327                     }
1328                     return new Pair<>(timestamp, result);
1329                 } catch (UntrustedIdentityException e) {
1330                     account.getSignalProtocolStore()
1331                             .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1332                                     e.getIdentityKey(),
1333                                     TrustLevel.UNTRUSTED);
1334                     return new Pair<>(timestamp, List.of());
1335                 }
1336             } else {
1337                 // Send to all individually, so sync messages are sent correctly
1338                 messageBuilder.withProfileKey(account.getProfileKey().serialize());
1339                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1340                 for (SignalServiceAddress address : recipients) {
1341                     final ContactInfo contact = account.getContactStore().getContact(address);
1342                     final int expirationTime = contact != null ? contact.messageExpirationTime : 0;
1343                     messageBuilder.withExpiration(expirationTime);
1344                     message = messageBuilder.build();
1345                     results.add(sendMessage(address, message));
1346                 }
1347                 return new Pair<>(timestamp, results);
1348             }
1349         } finally {
1350             if (message != null && message.isEndSession()) {
1351                 for (SignalServiceAddress recipient : recipients) {
1352                     handleEndSession(recipient);
1353                 }
1354             }
1355             account.save();
1356         }
1357     }
1358
1359     private Pair<Long, SendMessageResult> sendSelfMessage(
1360             SignalServiceDataMessage.Builder messageBuilder
1361     ) throws IOException {
1362         final long timestamp = System.currentTimeMillis();
1363         messageBuilder.withTimestamp(timestamp);
1364         getOrCreateMessagePipe();
1365         getOrCreateUnidentifiedMessagePipe();
1366         try {
1367             final SignalServiceAddress address = getSelfAddress();
1368
1369             final ContactInfo contact = account.getContactStore().getContact(address);
1370             final int expirationTime = contact != null ? contact.messageExpirationTime : 0;
1371             messageBuilder.withExpiration(expirationTime);
1372
1373             SignalServiceDataMessage message = messageBuilder.build();
1374             final SendMessageResult result = sendSelfMessage(message);
1375             return new Pair<>(timestamp, result);
1376         } finally {
1377             account.save();
1378         }
1379     }
1380
1381     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1382         SignalServiceMessageSender messageSender = createMessageSender();
1383
1384         SignalServiceAddress recipient = account.getSelfAddress();
1385
1386         final Optional<UnidentifiedAccessPair> unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipient);
1387         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1388                 message.getTimestamp(),
1389                 message,
1390                 message.getExpiresInSeconds(),
1391                 Map.of(recipient, unidentifiedAccess.isPresent()),
1392                 false);
1393         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1394
1395         try {
1396             long startTime = System.currentTimeMillis();
1397             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1398             return SendMessageResult.success(recipient,
1399                     unidentifiedAccess.isPresent(),
1400                     false,
1401                     System.currentTimeMillis() - startTime);
1402         } catch (UntrustedIdentityException e) {
1403             account.getSignalProtocolStore()
1404                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1405                             e.getIdentityKey(),
1406                             TrustLevel.UNTRUSTED);
1407             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1408         }
1409     }
1410
1411     private SendMessageResult sendMessage(
1412             SignalServiceAddress address, SignalServiceDataMessage message
1413     ) throws IOException {
1414         SignalServiceMessageSender messageSender = createMessageSender();
1415
1416         try {
1417             return messageSender.sendMessage(address, unidentifiedAccessHelper.getAccessFor(address), message);
1418         } catch (UntrustedIdentityException e) {
1419             account.getSignalProtocolStore()
1420                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1421                             e.getIdentityKey(),
1422                             TrustLevel.UNTRUSTED);
1423             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1424         }
1425     }
1426
1427     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1428         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(),
1429                 account.getSignalProtocolStore(),
1430                 certificateValidator);
1431         try {
1432             return cipher.decrypt(envelope);
1433         } catch (ProtocolUntrustedIdentityException e) {
1434             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1435                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e
1436                         .getCause();
1437                 final IdentityKey untrustedIdentity = identityException.getUntrustedIdentity();
1438                 if (untrustedIdentity != null) {
1439                     account.getSignalProtocolStore()
1440                             .saveIdentity(resolveSignalServiceAddress(identityException.getName()),
1441                                     untrustedIdentity,
1442                                     TrustLevel.UNTRUSTED);
1443                 }
1444                 throw identityException;
1445             }
1446             throw new AssertionError(e);
1447         }
1448     }
1449
1450     private void handleEndSession(SignalServiceAddress source) {
1451         account.getSignalProtocolStore().deleteAllSessions(source);
1452     }
1453
1454     private List<HandleAction> handleSignalServiceDataMessage(
1455             SignalServiceDataMessage message,
1456             boolean isSync,
1457             SignalServiceAddress source,
1458             SignalServiceAddress destination,
1459             boolean ignoreAttachments
1460     ) {
1461         List<HandleAction> actions = new ArrayList<>();
1462         if (message.getGroupContext().isPresent()) {
1463             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1464                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1465                 GroupIdV1 groupId = GroupId.v1(groupInfo.getGroupId());
1466                 GroupInfo group = getGroup(groupId);
1467                 if (group == null || group instanceof GroupInfoV1) {
1468                     GroupInfoV1 groupV1 = (GroupInfoV1) group;
1469                     switch (groupInfo.getType()) {
1470                         case UPDATE: {
1471                             if (groupV1 == null) {
1472                                 groupV1 = new GroupInfoV1(groupId);
1473                             }
1474
1475                             if (groupInfo.getAvatar().isPresent()) {
1476                                 SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1477                                 downloadGroupAvatar(avatar, groupV1.getGroupId());
1478                             }
1479
1480                             if (groupInfo.getName().isPresent()) {
1481                                 groupV1.name = groupInfo.getName().get();
1482                             }
1483
1484                             if (groupInfo.getMembers().isPresent()) {
1485                                 groupV1.addMembers(groupInfo.getMembers()
1486                                         .get()
1487                                         .stream()
1488                                         .map(this::resolveSignalServiceAddress)
1489                                         .collect(Collectors.toSet()));
1490                             }
1491
1492                             account.getGroupStore().updateGroup(groupV1);
1493                             break;
1494                         }
1495                         case DELIVER:
1496                             if (groupV1 == null && !isSync) {
1497                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1498                             }
1499                             break;
1500                         case QUIT: {
1501                             if (groupV1 != null) {
1502                                 groupV1.removeMember(source);
1503                                 account.getGroupStore().updateGroup(groupV1);
1504                             }
1505                             break;
1506                         }
1507                         case REQUEST_INFO:
1508                             if (groupV1 != null && !isSync) {
1509                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
1510                             }
1511                             break;
1512                     }
1513                 } else {
1514                     // Received a group v1 message for a v2 group
1515                 }
1516             }
1517             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1518                 final SignalServiceGroupV2 groupContext = message.getGroupContext().get().getGroupV2().get();
1519                 final GroupMasterKey groupMasterKey = groupContext.getMasterKey();
1520
1521                 getOrMigrateGroup(groupMasterKey,
1522                         groupContext.getRevision(),
1523                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1524             }
1525         }
1526
1527         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1528         if (conversationPartnerAddress != null && message.isEndSession()) {
1529             handleEndSession(conversationPartnerAddress);
1530         }
1531         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1532             if (message.getGroupContext().isPresent()) {
1533                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1534                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1535                     GroupInfoV1 group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1536                     if (group != null) {
1537                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1538                             group.messageExpirationTime = message.getExpiresInSeconds();
1539                             account.getGroupStore().updateGroup(group);
1540                         }
1541                     }
1542                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1543                     // disappearing message timer already stored in the DecryptedGroup
1544                 }
1545             } else if (conversationPartnerAddress != null) {
1546                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1547                 if (contact == null) {
1548                     contact = new ContactInfo(conversationPartnerAddress);
1549                 }
1550                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1551                     contact.messageExpirationTime = message.getExpiresInSeconds();
1552                     account.getContactStore().updateContact(contact);
1553                 }
1554             }
1555         }
1556         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1557             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1558                 downloadAttachment(attachment);
1559             }
1560         }
1561         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1562             final ProfileKey profileKey;
1563             try {
1564                 profileKey = new ProfileKey(message.getProfileKey().get());
1565             } catch (InvalidInputException e) {
1566                 throw new AssertionError(e);
1567             }
1568             if (source.matches(account.getSelfAddress())) {
1569                 this.account.setProfileKey(profileKey);
1570             }
1571             this.account.getProfileStore().storeProfileKey(source, profileKey);
1572         }
1573         if (message.getPreviews().isPresent()) {
1574             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1575             for (SignalServiceDataMessage.Preview preview : previews) {
1576                 if (preview.getImage().isPresent()) {
1577                     downloadAttachment(preview.getImage().get());
1578                 }
1579             }
1580         }
1581         if (message.getQuote().isPresent()) {
1582             final SignalServiceDataMessage.Quote quote = message.getQuote().get();
1583
1584             for (SignalServiceDataMessage.Quote.QuotedAttachment quotedAttachment : quote.getAttachments()) {
1585                 final SignalServiceAttachment thumbnail = quotedAttachment.getThumbnail();
1586                 if (thumbnail != null) {
1587                     downloadAttachment(thumbnail);
1588                 }
1589             }
1590         }
1591         if (message.getSticker().isPresent()) {
1592             final SignalServiceDataMessage.Sticker messageSticker = message.getSticker().get();
1593             Sticker sticker = account.getStickerStore().getSticker(messageSticker.getPackId());
1594             if (sticker == null) {
1595                 sticker = new Sticker(messageSticker.getPackId(), messageSticker.getPackKey());
1596                 account.getStickerStore().updateSticker(sticker);
1597             }
1598         }
1599         return actions;
1600     }
1601
1602     private GroupInfoV2 getOrMigrateGroup(
1603             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1604     ) {
1605         final GroupSecretParams groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1606
1607         GroupIdV2 groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1608         GroupInfo groupInfo = getGroup(groupId);
1609         final GroupInfoV2 groupInfoV2;
1610         if (groupInfo instanceof GroupInfoV1) {
1611             // Received a v2 group message for a v1 group, we need to locally migrate the group
1612             account.getGroupStore().deleteGroup(groupInfo.getGroupId());
1613             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1614             logger.info("Locally migrated group {} to group v2, id: {}",
1615                     groupInfo.getGroupId().toBase64(),
1616                     groupInfoV2.getGroupId().toBase64());
1617         } else if (groupInfo instanceof GroupInfoV2) {
1618             groupInfoV2 = (GroupInfoV2) groupInfo;
1619         } else {
1620             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1621         }
1622
1623         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1624             DecryptedGroup group = null;
1625             if (signedGroupChange != null
1626                     && groupInfoV2.getGroup() != null
1627                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1628                 group = groupHelper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(), signedGroupChange, groupMasterKey);
1629             }
1630             if (group == null) {
1631                 group = groupHelper.getDecryptedGroup(groupSecretParams);
1632             }
1633             if (group != null) {
1634                 storeProfileKeysFromMembers(group);
1635                 final String avatar = group.getAvatar();
1636                 if (avatar != null && !avatar.isEmpty()) {
1637                     downloadGroupAvatar(groupId, groupSecretParams, avatar);
1638                 }
1639             }
1640             groupInfoV2.setGroup(group);
1641             account.getGroupStore().updateGroup(groupInfoV2);
1642         }
1643
1644         return groupInfoV2;
1645     }
1646
1647     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1648         for (DecryptedMember member : group.getMembersList()) {
1649             final SignalServiceAddress address = resolveSignalServiceAddress(new SignalServiceAddress(UuidUtil.parseOrThrow(
1650                     member.getUuid().toByteArray()), null));
1651             try {
1652                 account.getProfileStore()
1653                         .storeProfileKey(address, new ProfileKey(member.getProfileKey().toByteArray()));
1654             } catch (InvalidInputException ignored) {
1655             }
1656         }
1657     }
1658
1659     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1660         for (CachedMessage cachedMessage : account.getMessageCache().getCachedMessages()) {
1661             retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
1662         }
1663     }
1664
1665     private void retryFailedReceivedMessage(
1666             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
1667     ) {
1668         SignalServiceEnvelope envelope = cachedMessage.loadEnvelope();
1669         if (envelope == null) {
1670             return;
1671         }
1672         SignalServiceContent content = null;
1673         if (!envelope.isReceipt()) {
1674             try {
1675                 content = decryptMessage(envelope);
1676             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1677                 return;
1678             } catch (Exception er) {
1679                 // All other errors are not recoverable, so delete the cached message
1680                 cachedMessage.delete();
1681                 return;
1682             }
1683             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1684             for (HandleAction action : actions) {
1685                 try {
1686                     action.execute(this);
1687                 } catch (Throwable e) {
1688                     logger.warn("Message action failed.", e);
1689                 }
1690             }
1691         }
1692         account.save();
1693         handler.handleMessage(envelope, content, null);
1694         cachedMessage.delete();
1695     }
1696
1697     public void receiveMessages(
1698             long timeout,
1699             TimeUnit unit,
1700             boolean returnOnTimeout,
1701             boolean ignoreAttachments,
1702             ReceiveMessageHandler handler
1703     ) throws IOException {
1704         retryFailedReceivedMessages(handler, ignoreAttachments);
1705
1706         Set<HandleAction> queuedActions = null;
1707
1708         final SignalServiceMessagePipe messagePipe = getOrCreateMessagePipe();
1709
1710         boolean hasCaughtUpWithOldMessages = false;
1711
1712         while (true) {
1713             SignalServiceEnvelope envelope;
1714             SignalServiceContent content = null;
1715             Exception exception = null;
1716             final CachedMessage[] cachedMessage = {null};
1717             try {
1718                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1719                     // store message on disk, before acknowledging receipt to the server
1720                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1);
1721                 });
1722                 if (result.isPresent()) {
1723                     envelope = result.get();
1724                 } else {
1725                     // Received indicator that server queue is empty
1726                     hasCaughtUpWithOldMessages = true;
1727
1728                     if (queuedActions != null) {
1729                         for (HandleAction action : queuedActions) {
1730                             try {
1731                                 action.execute(this);
1732                             } catch (Throwable e) {
1733                                 logger.warn("Message action failed.", e);
1734                             }
1735                         }
1736                         account.save();
1737                         queuedActions.clear();
1738                         queuedActions = null;
1739                     }
1740
1741                     // Continue to wait another timeout for new messages
1742                     continue;
1743                 }
1744             } catch (TimeoutException e) {
1745                 if (returnOnTimeout) return;
1746                 continue;
1747             }
1748
1749             if (envelope.hasSource()) {
1750                 // Store uuid if we don't have it already
1751                 SignalServiceAddress source = envelope.getSourceAddress();
1752                 resolveSignalServiceAddress(source);
1753             }
1754             if (!envelope.isReceipt()) {
1755                 try {
1756                     content = decryptMessage(envelope);
1757                 } catch (Exception e) {
1758                     exception = e;
1759                 }
1760                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1761                 if (hasCaughtUpWithOldMessages) {
1762                     for (HandleAction action : actions) {
1763                         try {
1764                             action.execute(this);
1765                         } catch (Throwable e) {
1766                             logger.warn("Message action failed.", e);
1767                         }
1768                     }
1769                 } else {
1770                     if (queuedActions == null) {
1771                         queuedActions = new HashSet<>();
1772                     }
1773                     queuedActions.addAll(actions);
1774                 }
1775             }
1776             account.save();
1777             if (isMessageBlocked(envelope, content)) {
1778                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
1779             } else if (isNotAGroupMember(envelope, content)) {
1780                 logger.info("Ignoring a message from a non group member: {}", envelope.getTimestamp());
1781             } else {
1782                 handler.handleMessage(envelope, content, exception);
1783             }
1784             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1785                 if (cachedMessage[0] != null) {
1786                     cachedMessage[0].delete();
1787                 }
1788             }
1789         }
1790     }
1791
1792     private boolean isMessageBlocked(
1793             SignalServiceEnvelope envelope, SignalServiceContent content
1794     ) {
1795         SignalServiceAddress source;
1796         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1797             source = envelope.getSourceAddress();
1798         } else if (content != null) {
1799             source = content.getSender();
1800         } else {
1801             return false;
1802         }
1803         ContactInfo sourceContact = account.getContactStore().getContact(source);
1804         if (sourceContact != null && sourceContact.blocked) {
1805             return true;
1806         }
1807
1808         if (content != null && content.getDataMessage().isPresent()) {
1809             SignalServiceDataMessage message = content.getDataMessage().get();
1810             if (message.getGroupContext().isPresent()) {
1811                 GroupId groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1812                 GroupInfo group = getGroup(groupId);
1813                 if (group != null && group.isBlocked()) {
1814                     return true;
1815                 }
1816             }
1817         }
1818         return false;
1819     }
1820
1821     private boolean isNotAGroupMember(
1822             SignalServiceEnvelope envelope, SignalServiceContent content
1823     ) {
1824         SignalServiceAddress source;
1825         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1826             source = envelope.getSourceAddress();
1827         } else if (content != null) {
1828             source = content.getSender();
1829         } else {
1830             return false;
1831         }
1832
1833         if (content != null && content.getDataMessage().isPresent()) {
1834             SignalServiceDataMessage message = content.getDataMessage().get();
1835             if (message.getGroupContext().isPresent()) {
1836                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1837                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1838                     if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
1839                         return false;
1840                     }
1841                 }
1842                 GroupId groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1843                 GroupInfo group = getGroup(groupId);
1844                 if (group != null && !group.isMember(source)) {
1845                     return true;
1846                 }
1847             }
1848         }
1849         return false;
1850     }
1851
1852     private List<HandleAction> handleMessage(
1853             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
1854     ) {
1855         List<HandleAction> actions = new ArrayList<>();
1856         if (content != null) {
1857             final SignalServiceAddress sender;
1858             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1859                 sender = envelope.getSourceAddress();
1860             } else {
1861                 sender = content.getSender();
1862             }
1863             // Store uuid if we don't have it already
1864             resolveSignalServiceAddress(sender);
1865
1866             if (content.getDataMessage().isPresent()) {
1867                 SignalServiceDataMessage message = content.getDataMessage().get();
1868
1869                 if (content.isNeedsReceipt()) {
1870                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1871                 }
1872
1873                 actions.addAll(handleSignalServiceDataMessage(message,
1874                         false,
1875                         sender,
1876                         account.getSelfAddress(),
1877                         ignoreAttachments));
1878             }
1879             if (content.getSyncMessage().isPresent()) {
1880                 account.setMultiDevice(true);
1881                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1882                 if (syncMessage.getSent().isPresent()) {
1883                     SentTranscriptMessage message = syncMessage.getSent().get();
1884                     final SignalServiceAddress destination = message.getDestination().orNull();
1885                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
1886                             true,
1887                             sender,
1888                             destination,
1889                             ignoreAttachments));
1890                 }
1891                 if (syncMessage.getRequest().isPresent()) {
1892                     RequestMessage rm = syncMessage.getRequest().get();
1893                     if (rm.isContactsRequest()) {
1894                         actions.add(SendSyncContactsAction.create());
1895                     }
1896                     if (rm.isGroupsRequest()) {
1897                         actions.add(SendSyncGroupsAction.create());
1898                     }
1899                     if (rm.isBlockedListRequest()) {
1900                         actions.add(SendSyncBlockedListAction.create());
1901                     }
1902                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
1903                 }
1904                 if (syncMessage.getGroups().isPresent()) {
1905                     File tmpFile = null;
1906                     try {
1907                         tmpFile = IOUtils.createTempFile();
1908                         final SignalServiceAttachment groupsMessage = syncMessage.getGroups().get();
1909                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(groupsMessage.asPointer(),
1910                                 tmpFile)) {
1911                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1912                             DeviceGroup g;
1913                             while ((g = s.read()) != null) {
1914                                 GroupInfoV1 syncGroup = account.getGroupStore()
1915                                         .getOrCreateGroupV1(GroupId.v1(g.getId()));
1916                                 if (syncGroup != null) {
1917                                     if (g.getName().isPresent()) {
1918                                         syncGroup.name = g.getName().get();
1919                                     }
1920                                     syncGroup.addMembers(g.getMembers()
1921                                             .stream()
1922                                             .map(this::resolveSignalServiceAddress)
1923                                             .collect(Collectors.toSet()));
1924                                     if (!g.isActive()) {
1925                                         syncGroup.removeMember(account.getSelfAddress());
1926                                     } else {
1927                                         // Add ourself to the member set as it's marked as active
1928                                         syncGroup.addMembers(List.of(account.getSelfAddress()));
1929                                     }
1930                                     syncGroup.blocked = g.isBlocked();
1931                                     if (g.getColor().isPresent()) {
1932                                         syncGroup.color = g.getColor().get();
1933                                     }
1934
1935                                     if (g.getAvatar().isPresent()) {
1936                                         downloadGroupAvatar(g.getAvatar().get(), syncGroup.getGroupId());
1937                                     }
1938                                     syncGroup.inboxPosition = g.getInboxPosition().orNull();
1939                                     syncGroup.archived = g.isArchived();
1940                                     account.getGroupStore().updateGroup(syncGroup);
1941                                 }
1942                             }
1943                         }
1944                     } catch (Exception e) {
1945                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
1946                                 tmpFile,
1947                                 e.getMessage());
1948                     } finally {
1949                         if (tmpFile != null) {
1950                             try {
1951                                 Files.delete(tmpFile.toPath());
1952                             } catch (IOException e) {
1953                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
1954                                         tmpFile,
1955                                         e.getMessage());
1956                             }
1957                         }
1958                     }
1959                 }
1960                 if (syncMessage.getBlockedList().isPresent()) {
1961                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1962                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1963                         setContactBlocked(resolveSignalServiceAddress(address), true);
1964                     }
1965                     for (GroupId groupId : blockedListMessage.getGroupIds()
1966                             .stream()
1967                             .map(GroupId::unknownVersion)
1968                             .collect(Collectors.toSet())) {
1969                         try {
1970                             setGroupBlocked(groupId, true);
1971                         } catch (GroupNotFoundException e) {
1972                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
1973                                     groupId.toBase64());
1974                         }
1975                     }
1976                 }
1977                 if (syncMessage.getContacts().isPresent()) {
1978                     File tmpFile = null;
1979                     try {
1980                         tmpFile = IOUtils.createTempFile();
1981                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1982                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
1983                                 .asPointer(), tmpFile)) {
1984                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1985                             if (contactsMessage.isComplete()) {
1986                                 account.getContactStore().clear();
1987                             }
1988                             DeviceContact c;
1989                             while ((c = s.read()) != null) {
1990                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1991                                     account.setProfileKey(c.getProfileKey().get());
1992                                 }
1993                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1994                                 ContactInfo contact = account.getContactStore().getContact(address);
1995                                 if (contact == null) {
1996                                     contact = new ContactInfo(address);
1997                                 }
1998                                 if (c.getName().isPresent()) {
1999                                     contact.name = c.getName().get();
2000                                 }
2001                                 if (c.getColor().isPresent()) {
2002                                     contact.color = c.getColor().get();
2003                                 }
2004                                 if (c.getProfileKey().isPresent()) {
2005                                     account.getProfileStore().storeProfileKey(address, c.getProfileKey().get());
2006                                 }
2007                                 if (c.getVerified().isPresent()) {
2008                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
2009                                     account.getSignalProtocolStore()
2010                                             .setIdentityTrustLevel(verifiedMessage.getDestination(),
2011                                                     verifiedMessage.getIdentityKey(),
2012                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2013                                 }
2014                                 if (c.getExpirationTimer().isPresent()) {
2015                                     contact.messageExpirationTime = c.getExpirationTimer().get();
2016                                 }
2017                                 contact.blocked = c.isBlocked();
2018                                 contact.inboxPosition = c.getInboxPosition().orNull();
2019                                 contact.archived = c.isArchived();
2020                                 account.getContactStore().updateContact(contact);
2021
2022                                 if (c.getAvatar().isPresent()) {
2023                                     downloadContactAvatar(c.getAvatar().get(), contact.getAddress());
2024                                 }
2025                             }
2026                         }
2027                     } catch (Exception e) {
2028                         logger.warn("Failed to handle received sync contacts “{}”, ignoring: {}",
2029                                 tmpFile,
2030                                 e.getMessage());
2031                     } finally {
2032                         if (tmpFile != null) {
2033                             try {
2034                                 Files.delete(tmpFile.toPath());
2035                             } catch (IOException e) {
2036                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2037                                         tmpFile,
2038                                         e.getMessage());
2039                             }
2040                         }
2041                     }
2042                 }
2043                 if (syncMessage.getVerified().isPresent()) {
2044                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
2045                     account.getSignalProtocolStore()
2046                             .setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()),
2047                                     verifiedMessage.getIdentityKey(),
2048                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2049                 }
2050                 if (syncMessage.getStickerPackOperations().isPresent()) {
2051                     final List<StickerPackOperationMessage> stickerPackOperationMessages = syncMessage.getStickerPackOperations()
2052                             .get();
2053                     for (StickerPackOperationMessage m : stickerPackOperationMessages) {
2054                         if (!m.getPackId().isPresent()) {
2055                             continue;
2056                         }
2057                         Sticker sticker = account.getStickerStore().getSticker(m.getPackId().get());
2058                         if (sticker == null) {
2059                             if (!m.getPackKey().isPresent()) {
2060                                 continue;
2061                             }
2062                             sticker = new Sticker(m.getPackId().get(), m.getPackKey().get());
2063                         }
2064                         sticker.setInstalled(!m.getType().isPresent()
2065                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2066                         account.getStickerStore().updateSticker(sticker);
2067                     }
2068                 }
2069                 if (syncMessage.getFetchType().isPresent()) {
2070                     switch (syncMessage.getFetchType().get()) {
2071                         case LOCAL_PROFILE:
2072                             getRecipientProfile(getSelfAddress(), true);
2073                         case STORAGE_MANIFEST:
2074                             // TODO
2075                     }
2076                 }
2077                 if (syncMessage.getKeys().isPresent()) {
2078                     final KeysMessage keysMessage = syncMessage.getKeys().get();
2079                     if (keysMessage.getStorageService().isPresent()) {
2080                         final StorageKey storageKey = keysMessage.getStorageService().get();
2081                         account.setStorageKey(storageKey);
2082                     }
2083                 }
2084                 if (syncMessage.getConfiguration().isPresent()) {
2085                     // TODO
2086                 }
2087             }
2088         }
2089         return actions;
2090     }
2091
2092     private void downloadContactAvatar(SignalServiceAttachment avatar, SignalServiceAddress address) {
2093         try {
2094             avatarStore.storeContactAvatar(address, outputStream -> retrieveAttachment(avatar, outputStream));
2095         } catch (IOException e) {
2096             logger.warn("Failed to download avatar for contact {}, ignoring: {}", address, e.getMessage());
2097         }
2098     }
2099
2100     private void downloadGroupAvatar(SignalServiceAttachment avatar, GroupId groupId) {
2101         try {
2102             avatarStore.storeGroupAvatar(groupId, outputStream -> retrieveAttachment(avatar, outputStream));
2103         } catch (IOException e) {
2104             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2105         }
2106     }
2107
2108     private void downloadGroupAvatar(GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey) {
2109         try {
2110             avatarStore.storeGroupAvatar(groupId,
2111                     outputStream -> retrieveGroupV2Avatar(groupSecretParams, cdnKey, outputStream));
2112         } catch (IOException e) {
2113             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2114         }
2115     }
2116
2117     private void downloadProfileAvatar(
2118             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2119     ) {
2120         try {
2121             avatarStore.storeProfileAvatar(address,
2122                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
2123         } catch (Throwable e) {
2124             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
2125         }
2126     }
2127
2128     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2129         return attachmentStore.getAttachmentFile(attachmentId);
2130     }
2131
2132     private void downloadAttachment(final SignalServiceAttachment attachment) {
2133         if (!attachment.isPointer()) {
2134             logger.warn("Invalid state, can't store an attachment stream.");
2135         }
2136
2137         SignalServiceAttachmentPointer pointer = attachment.asPointer();
2138         if (pointer.getPreview().isPresent()) {
2139             final byte[] preview = pointer.getPreview().get();
2140             try {
2141                 attachmentStore.storeAttachmentPreview(pointer.getRemoteId(),
2142                         outputStream -> outputStream.write(preview, 0, preview.length));
2143             } catch (IOException e) {
2144                 logger.warn("Failed to download attachment preview, ignoring: {}", e.getMessage());
2145             }
2146         }
2147
2148         try {
2149             attachmentStore.storeAttachment(pointer.getRemoteId(),
2150                     outputStream -> retrieveAttachmentPointer(pointer, outputStream));
2151         } catch (IOException e) {
2152             logger.warn("Failed to download attachment ({}), ignoring: {}", pointer.getRemoteId(), e.getMessage());
2153         }
2154     }
2155
2156     private void retrieveGroupV2Avatar(
2157             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
2158     ) throws IOException {
2159         GroupsV2Operations.GroupOperations groupOperations = groupsV2Operations.forGroup(groupSecretParams);
2160
2161         File tmpFile = IOUtils.createTempFile();
2162         try (InputStream input = messageReceiver.retrieveGroupsV2ProfileAvatar(cdnKey,
2163                 tmpFile,
2164                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2165             byte[] encryptedData = IOUtils.readFully(input);
2166
2167             byte[] decryptedData = groupOperations.decryptAvatar(encryptedData);
2168             outputStream.write(decryptedData);
2169         } finally {
2170             try {
2171                 Files.delete(tmpFile.toPath());
2172             } catch (IOException e) {
2173                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2174                         tmpFile,
2175                         e.getMessage());
2176             }
2177         }
2178     }
2179
2180     private void retrieveProfileAvatar(
2181             String avatarPath, ProfileKey profileKey, OutputStream outputStream
2182     ) throws IOException {
2183         File tmpFile = IOUtils.createTempFile();
2184         try (InputStream input = messageReceiver.retrieveProfileAvatar(avatarPath,
2185                 tmpFile,
2186                 profileKey,
2187                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2188             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2189             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2190         } finally {
2191             try {
2192                 Files.delete(tmpFile.toPath());
2193             } catch (IOException e) {
2194                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2195                         tmpFile,
2196                         e.getMessage());
2197             }
2198         }
2199     }
2200
2201     private void retrieveAttachment(
2202             final SignalServiceAttachment attachment, final OutputStream outputStream
2203     ) throws IOException {
2204         if (attachment.isPointer()) {
2205             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2206             retrieveAttachmentPointer(pointer, outputStream);
2207         } else {
2208             SignalServiceAttachmentStream stream = attachment.asStream();
2209             IOUtils.copyStream(stream.getInputStream(), outputStream);
2210         }
2211     }
2212
2213     private void retrieveAttachmentPointer(
2214             SignalServiceAttachmentPointer pointer, OutputStream outputStream
2215     ) throws IOException {
2216         File tmpFile = IOUtils.createTempFile();
2217         try (InputStream input = retrieveAttachmentAsStream(pointer, tmpFile)) {
2218             IOUtils.copyStream(input, outputStream);
2219         } catch (MissingConfigurationException | InvalidMessageException e) {
2220             throw new IOException(e);
2221         } finally {
2222             try {
2223                 Files.delete(tmpFile.toPath());
2224             } catch (IOException e) {
2225                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2226                         tmpFile,
2227                         e.getMessage());
2228             }
2229         }
2230     }
2231
2232     private InputStream retrieveAttachmentAsStream(
2233             SignalServiceAttachmentPointer pointer, File tmpFile
2234     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2235         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2236     }
2237
2238     void sendGroups() throws IOException, UntrustedIdentityException {
2239         File groupsFile = IOUtils.createTempFile();
2240
2241         try {
2242             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2243                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
2244                 for (GroupInfo record : getGroups()) {
2245                     if (record instanceof GroupInfoV1) {
2246                         GroupInfoV1 groupInfo = (GroupInfoV1) record;
2247                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2248                                 Optional.fromNullable(groupInfo.name),
2249                                 new ArrayList<>(groupInfo.getMembers()),
2250                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2251                                 groupInfo.isMember(account.getSelfAddress()),
2252                                 Optional.of(groupInfo.messageExpirationTime),
2253                                 Optional.fromNullable(groupInfo.color),
2254                                 groupInfo.blocked,
2255                                 Optional.fromNullable(groupInfo.inboxPosition),
2256                                 groupInfo.archived));
2257                     }
2258                 }
2259             }
2260
2261             if (groupsFile.exists() && groupsFile.length() > 0) {
2262                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
2263                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2264                             .withStream(groupsFileStream)
2265                             .withContentType("application/octet-stream")
2266                             .withLength(groupsFile.length())
2267                             .build();
2268
2269                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2270                 }
2271             }
2272         } finally {
2273             try {
2274                 Files.delete(groupsFile.toPath());
2275             } catch (IOException e) {
2276                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2277             }
2278         }
2279     }
2280
2281     public void sendContacts() throws IOException, UntrustedIdentityException {
2282         File contactsFile = IOUtils.createTempFile();
2283
2284         try {
2285             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2286                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
2287                 for (ContactInfo record : account.getContactStore().getContacts()) {
2288                     VerifiedMessage verifiedMessage = null;
2289                     IdentityInfo currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
2290                     if (currentIdentity != null) {
2291                         verifiedMessage = new VerifiedMessage(record.getAddress(),
2292                                 currentIdentity.getIdentityKey(),
2293                                 currentIdentity.getTrustLevel().toVerifiedState(),
2294                                 currentIdentity.getDateAdded().getTime());
2295                     }
2296
2297                     ProfileKey profileKey = account.getProfileStore().getProfileKey(record.getAddress());
2298                     out.write(new DeviceContact(record.getAddress(),
2299                             Optional.fromNullable(record.name),
2300                             createContactAvatarAttachment(record.getAddress()),
2301                             Optional.fromNullable(record.color),
2302                             Optional.fromNullable(verifiedMessage),
2303                             Optional.fromNullable(profileKey),
2304                             record.blocked,
2305                             Optional.of(record.messageExpirationTime),
2306                             Optional.fromNullable(record.inboxPosition),
2307                             record.archived));
2308                 }
2309
2310                 if (account.getProfileKey() != null) {
2311                     // Send our own profile key as well
2312                     out.write(new DeviceContact(account.getSelfAddress(),
2313                             Optional.absent(),
2314                             Optional.absent(),
2315                             Optional.absent(),
2316                             Optional.absent(),
2317                             Optional.of(account.getProfileKey()),
2318                             false,
2319                             Optional.absent(),
2320                             Optional.absent(),
2321                             false));
2322                 }
2323             }
2324
2325             if (contactsFile.exists() && contactsFile.length() > 0) {
2326                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
2327                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2328                             .withStream(contactsFileStream)
2329                             .withContentType("application/octet-stream")
2330                             .withLength(contactsFile.length())
2331                             .build();
2332
2333                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2334                 }
2335             }
2336         } finally {
2337             try {
2338                 Files.delete(contactsFile.toPath());
2339             } catch (IOException e) {
2340                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2341             }
2342         }
2343     }
2344
2345     void sendBlockedList() throws IOException, UntrustedIdentityException {
2346         List<SignalServiceAddress> addresses = new ArrayList<>();
2347         for (ContactInfo record : account.getContactStore().getContacts()) {
2348             if (record.blocked) {
2349                 addresses.add(record.getAddress());
2350             }
2351         }
2352         List<byte[]> groupIds = new ArrayList<>();
2353         for (GroupInfo record : getGroups()) {
2354             if (record.isBlocked()) {
2355                 groupIds.add(record.getGroupId().serialize());
2356             }
2357         }
2358         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2359     }
2360
2361     private void sendVerifiedMessage(
2362             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2363     ) throws IOException, UntrustedIdentityException {
2364         VerifiedMessage verifiedMessage = new VerifiedMessage(destination,
2365                 identityKey,
2366                 trustLevel.toVerifiedState(),
2367                 System.currentTimeMillis());
2368         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2369     }
2370
2371     public List<ContactInfo> getContacts() {
2372         return account.getContactStore().getContacts();
2373     }
2374
2375     public String getContactOrProfileName(String number) {
2376         final SignalServiceAddress address = Utils.getSignalServiceAddressFromIdentifier(number);
2377
2378         final ContactInfo contact = account.getContactStore().getContact(address);
2379         if (contact != null && !Util.isEmpty(contact.name)) {
2380             return contact.name;
2381         }
2382
2383         final SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
2384         if (profileEntry != null && profileEntry.getProfile() != null) {
2385             return profileEntry.getProfile().getName();
2386         }
2387
2388         return null;
2389     }
2390
2391     public GroupInfo getGroup(GroupId groupId) {
2392         final GroupInfo group = account.getGroupStore().getGroup(groupId);
2393         if (group instanceof GroupInfoV2 && ((GroupInfoV2) group).getGroup() == null) {
2394             final GroupSecretParams groupSecretParams = GroupSecretParams.deriveFromMasterKey(((GroupInfoV2) group).getMasterKey());
2395             ((GroupInfoV2) group).setGroup(groupHelper.getDecryptedGroup(groupSecretParams));
2396             account.getGroupStore().updateGroup(group);
2397         }
2398         return group;
2399     }
2400
2401     public List<IdentityInfo> getIdentities() {
2402         return account.getSignalProtocolStore().getIdentities();
2403     }
2404
2405     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2406         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
2407     }
2408
2409     /**
2410      * Trust this the identity with this fingerprint
2411      *
2412      * @param name        username of the identity
2413      * @param fingerprint Fingerprint
2414      */
2415     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2416         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2417         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2418         if (ids == null) {
2419             return false;
2420         }
2421         for (IdentityInfo id : ids) {
2422             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
2423                 continue;
2424             }
2425
2426             account.getSignalProtocolStore()
2427                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2428             try {
2429                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2430             } catch (IOException | UntrustedIdentityException e) {
2431                 logger.warn("Failed to send verification sync message: {}", e.getMessage());
2432             }
2433             account.save();
2434             return true;
2435         }
2436         return false;
2437     }
2438
2439     /**
2440      * Trust this the identity with this safety number
2441      *
2442      * @param name         username of the identity
2443      * @param safetyNumber Safety number
2444      */
2445     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2446         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2447         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2448         if (ids == null) {
2449             return false;
2450         }
2451         for (IdentityInfo id : ids) {
2452             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2453                 continue;
2454             }
2455
2456             account.getSignalProtocolStore()
2457                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2458             try {
2459                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2460             } catch (IOException | UntrustedIdentityException e) {
2461                 logger.warn("Failed to send verification sync message: {}", e.getMessage());
2462             }
2463             account.save();
2464             return true;
2465         }
2466         return false;
2467     }
2468
2469     /**
2470      * Trust all keys of this identity without verification
2471      *
2472      * @param name username of the identity
2473      */
2474     public boolean trustIdentityAllKeys(String name) {
2475         SignalServiceAddress address = resolveSignalServiceAddress(name);
2476         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2477         if (ids == null) {
2478             return false;
2479         }
2480         for (IdentityInfo id : ids) {
2481             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2482                 account.getSignalProtocolStore()
2483                         .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2484                 try {
2485                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2486                 } catch (IOException | UntrustedIdentityException e) {
2487                     logger.warn("Failed to send verification sync message: {}", e.getMessage());
2488                 }
2489             }
2490         }
2491         account.save();
2492         return true;
2493     }
2494
2495     public String computeSafetyNumber(
2496             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2497     ) {
2498         return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
2499                 account.getSelfAddress(),
2500                 getIdentityKeyPair().getPublicKey(),
2501                 theirAddress,
2502                 theirIdentityKey);
2503     }
2504
2505     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2506         String canonicalizedNumber = UuidUtil.isUuid(identifier)
2507                 ? identifier
2508                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2509         return resolveSignalServiceAddress(canonicalizedNumber);
2510     }
2511
2512     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2513         SignalServiceAddress address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2514
2515         return resolveSignalServiceAddress(address);
2516     }
2517
2518     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2519         if (address.matches(account.getSelfAddress())) {
2520             return account.getSelfAddress();
2521         }
2522
2523         return account.getRecipientStore().resolveServiceAddress(address);
2524     }
2525
2526     @Override
2527     public void close() throws IOException {
2528         close(true);
2529     }
2530
2531     void close(boolean closeAccount) throws IOException {
2532         executor.shutdown();
2533
2534         if (messagePipe != null) {
2535             messagePipe.shutdown();
2536             messagePipe = null;
2537         }
2538
2539         if (unidentifiedMessagePipe != null) {
2540             unidentifiedMessagePipe.shutdown();
2541             unidentifiedMessagePipe = null;
2542         }
2543
2544         if (closeAccount && account != null) {
2545             account.close();
2546         }
2547         account = null;
2548     }
2549
2550     public interface ReceiveMessageHandler {
2551
2552         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2553     }
2554 }