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

   1 /*
   2   Copyright (C) 2015-2020 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 com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.signal.manager.groups.GroupId;
  22 import org.asamk.signal.manager.groups.GroupIdV1;
  23 import org.asamk.signal.manager.groups.GroupIdV2;
  24 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  25 import org.asamk.signal.manager.groups.GroupNotFoundException;
  26 import org.asamk.signal.manager.groups.GroupUtils;
  27 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  28 import org.asamk.signal.manager.helper.GroupHelper;
  29 import org.asamk.signal.manager.helper.PinHelper;
  30 import org.asamk.signal.manager.helper.ProfileHelper;
  31 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  32 import org.asamk.signal.manager.storage.SignalAccount;
  33 import org.asamk.signal.manager.storage.contacts.ContactInfo;
  34 import org.asamk.signal.manager.storage.groups.GroupInfo;
  35 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  36 import org.asamk.signal.manager.storage.groups.GroupInfoV2;
  37 import org.asamk.signal.manager.storage.profiles.SignalProfile;
  38 import org.asamk.signal.manager.storage.profiles.SignalProfileEntry;
  39 import org.asamk.signal.manager.storage.protocol.IdentityInfo;
  40 import org.asamk.signal.manager.storage.stickers.Sticker;
  41 import org.asamk.signal.manager.util.AttachmentUtils;
  42 import org.asamk.signal.manager.util.IOUtils;
  43 import org.asamk.signal.manager.util.KeyUtils;
  44 import org.asamk.signal.manager.util.MessageCacheUtils;
  45 import org.asamk.signal.manager.util.Utils;
  46 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  47 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  48 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  49 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  50 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  51 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  52 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  53 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  54 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  55 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  56 import org.signal.libsignal.metadata.SelfSendException;
  57 import org.signal.libsignal.metadata.certificate.CertificateValidator;
  58 import org.signal.storageservice.protos.groups.GroupChange;
  59 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
  60 import org.signal.storageservice.protos.groups.local.DecryptedGroupJoinInfo;
  61 import org.signal.storageservice.protos.groups.local.DecryptedMember;
  62 import org.signal.zkgroup.InvalidInputException;
  63 import org.signal.zkgroup.VerificationFailedException;
  64 import org.signal.zkgroup.auth.AuthCredentialResponse;
  65 import org.signal.zkgroup.groups.GroupMasterKey;
  66 import org.signal.zkgroup.groups.GroupSecretParams;
  67 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  68 import org.signal.zkgroup.profiles.ProfileKey;
  69 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  70 import org.slf4j.Logger;
  71 import org.slf4j.LoggerFactory;
  72 import org.whispersystems.libsignal.IdentityKey;
  73 import org.whispersystems.libsignal.IdentityKeyPair;
  74 import org.whispersystems.libsignal.InvalidKeyException;
  75 import org.whispersystems.libsignal.InvalidMessageException;
  76 import org.whispersystems.libsignal.InvalidVersionException;
  77 import org.whispersystems.libsignal.ecc.Curve;
  78 import org.whispersystems.libsignal.ecc.ECKeyPair;
  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.KeyHelper;
  83 import org.whispersystems.libsignal.util.Medium;
  84 import org.whispersystems.libsignal.util.Pair;
  85 import org.whispersystems.libsignal.util.guava.Optional;
  86 import org.whispersystems.signalservice.api.KbsPinData;
  87 import org.whispersystems.signalservice.api.KeyBackupService;
  88 import org.whispersystems.signalservice.api.KeyBackupServicePinException;
  89 import org.whispersystems.signalservice.api.KeyBackupSystemNoDataException;
  90 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  91 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  92 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  93 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  94 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  95 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  96 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  97 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  98 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  99 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
 100 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
 101 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
 102 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
 103 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
 104 import org.whispersystems.signalservice.api.kbs.MasterKey;
 105 import org.whispersystems.signalservice.api.messages.SendMessageResult;
 106 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
 107 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
 108 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
 109 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
 110 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
 111 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
 112 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
 113 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
 114 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
 115 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
 116 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
 117 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
 118 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
 119 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 120 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 121 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 122 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 123 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 124 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 125 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 126 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 127 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 128 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 129 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 130 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 131 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 132 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 133 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 134 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
 135 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 136 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 137 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 138 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
 139 import org.whispersystems.signalservice.api.util.SleepTimer;
 140 import org.whispersystems.signalservice.api.util.StreamDetails;
 141 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 142 import org.whispersystems.signalservice.api.util.UuidUtil;
 143 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 144 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 145 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 146 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 147 import org.whispersystems.signalservice.internal.push.LockedException;
 148 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 149 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 150 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 151 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 152 import org.whispersystems.signalservice.internal.util.Hex;
 153 import org.whispersystems.util.Base64;
 154
 155 import java.io.Closeable;
 156 import java.io.File;
 157 import java.io.FileInputStream;
 158 import java.io.FileNotFoundException;
 159 import java.io.FileOutputStream;
 160 import java.io.IOException;
 161 import java.io.InputStream;
 162 import java.io.OutputStream;
 163 import java.net.URI;
 164 import java.net.URISyntaxException;
 165 import java.net.URLEncoder;
 166 import java.nio.charset.StandardCharsets;
 167 import java.nio.file.Files;
 168 import java.nio.file.Paths;
 169 import java.nio.file.StandardCopyOption;
 170 import java.security.KeyStore;
 171 import java.security.SignatureException;
 172 import java.util.ArrayList;
 173 import java.util.Arrays;
 174 import java.util.Collection;
 175 import java.util.Date;
 176 import java.util.HashMap;
 177 import java.util.HashSet;
 178 import java.util.List;
 179 import java.util.Locale;
 180 import java.util.Map;
 181 import java.util.Objects;
 182 import java.util.Set;
 183 import java.util.UUID;
 184 import java.util.concurrent.ExecutorService;
 185 import java.util.concurrent.TimeUnit;
 186 import java.util.concurrent.TimeoutException;
 187 import java.util.stream.Collectors;
 188 import java.util.zip.ZipEntry;
 189 import java.util.zip.ZipFile;
 190
 191 import static org.asamk.signal.manager.ServiceConfig.CDS_MRENCLAVE;
 192 import static org.asamk.signal.manager.ServiceConfig.capabilities;
 193 import static org.asamk.signal.manager.ServiceConfig.getIasKeyStore;
 194
 195 public class Manager implements Closeable {
 196
 197     final static Logger logger = LoggerFactory.getLogger(Manager.class);
 198
 199     private final SleepTimer timer = new UptimeSleepTimer();
 200     private final CertificateValidator certificateValidator = new CertificateValidator(ServiceConfig.getUnidentifiedSenderTrustRoot());
 201
 202     private final SignalServiceConfiguration serviceConfiguration;
 203     private final String userAgent;
 204
 205     // TODO make configurable
 206     private final boolean discoverableByPhoneNumber = true;
 207     private final boolean unrestrictedUnidentifiedAccess = false;
 208
 209     private final SignalAccount account;
 210     private final PathConfig pathConfig;
 211     private SignalServiceAccountManager accountManager;
 212     private GroupsV2Api groupsV2Api;
 213     private final GroupsV2Operations groupsV2Operations;
 214
 215     private SignalServiceMessageReceiver messageReceiver = null;
 216     private SignalServiceMessagePipe messagePipe = null;
 217     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 218
 219     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 220     private final ProfileHelper profileHelper;
 221     private final GroupHelper groupHelper;
 222     private PinHelper pinHelper;
 223
 224     Manager(
 225             SignalAccount account,
 226             PathConfig pathConfig,
 227             SignalServiceConfiguration serviceConfiguration,
 228             String userAgent
 229     ) {
 230         this.account = account;
 231         this.pathConfig = pathConfig;
 232         this.serviceConfiguration = serviceConfiguration;
 233         this.userAgent = userAgent;
 234         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 235                 serviceConfiguration)) : null;
 236         createSignalServiceAccountManager();
 237
 238         this.account.setResolver(this::resolveSignalServiceAddress);
 239
 240         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 241                 account.getProfileStore()::getProfileKey,
 242                 this::getRecipientProfile,
 243                 this::getSenderCertificate);
 244         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 245                 unidentifiedAccessHelper::getAccessFor,
 246                 unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
 247                 this::getOrCreateMessageReceiver);
 248         this.groupHelper = new GroupHelper(this::getRecipientProfileKeyCredential,
 249                 this::getRecipientProfile,
 250                 account::getSelfAddress,
 251                 groupsV2Operations,
 252                 groupsV2Api,
 253                 this::getGroupAuthForToday);
 254     }
 255
 256     public String getUsername() {
 257         return account.getUsername();
 258     }
 259
 260     public SignalServiceAddress getSelfAddress() {
 261         return account.getSelfAddress();
 262     }
 263
 264     private void createSignalServiceAccountManager() {
 265         this.accountManager = new SignalServiceAccountManager(serviceConfiguration,
 266                 new DynamicCredentialsProvider(account.getUuid(),
 267                         account.getUsername(),
 268                         account.getPassword(),
 269                         null,
 270                         account.getDeviceId()),
 271                 userAgent,
 272                 groupsV2Operations,
 273                 timer);
 274         this.groupsV2Api = accountManager.getGroupsV2Api();
 275         this.pinHelper = new PinHelper(createKeyBackupService());
 276     }
 277
 278     private KeyBackupService createKeyBackupService() {
 279         KeyStore keyStore = ServiceConfig.getIasKeyStore();
 280
 281         return accountManager.getKeyBackupService(keyStore,
 282                 ServiceConfig.KEY_BACKUP_ENCLAVE_NAME,
 283                 ServiceConfig.KEY_BACKUP_SERVICE_ID,
 284                 ServiceConfig.KEY_BACKUP_MRENCLAVE,
 285                 10);
 286     }
 287
 288     private IdentityKeyPair getIdentityKeyPair() {
 289         return account.getSignalProtocolStore().getIdentityKeyPair();
 290     }
 291
 292     public int getDeviceId() {
 293         return account.getDeviceId();
 294     }
 295
 296     private File getMessageCachePath() {
 297         return SignalAccount.getMessageCachePath(pathConfig.getDataPath(), account.getUsername());
 298     }
 299
 300     private File getMessageCachePath(String sender) {
 301         if (sender == null || sender.isEmpty()) {
 302             return getMessageCachePath();
 303         }
 304
 305         return new File(getMessageCachePath(), sender.replace("/", "_"));
 306     }
 307
 308     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 309         File cachePath = getMessageCachePath(sender);
 310         IOUtils.createPrivateDirectories(cachePath);
 311         return new File(cachePath, now + "_" + timestamp);
 312     }
 313
 314     public static Manager init(
 315             String username, File settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent
 316     ) throws IOException {
 317         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 318
 319         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 320             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 321             int registrationId = KeyHelper.generateRegistrationId(false);
 322
 323             ProfileKey profileKey = KeyUtils.createProfileKey();
 324             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(),
 325                     username,
 326                     identityKey,
 327                     registrationId,
 328                     profileKey);
 329             account.save();
 330
 331             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 332         }
 333
 334         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 335
 336         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 337
 338         m.migrateLegacyConfigs();
 339
 340         return m;
 341     }
 342
 343     private void migrateLegacyConfigs() {
 344         if (account.getProfileKey() == null && isRegistered()) {
 345             // Old config file, creating new profile key
 346             account.setProfileKey(KeyUtils.createProfileKey());
 347             account.save();
 348         }
 349         // Store profile keys only in profile store
 350         for (ContactInfo contact : account.getContactStore().getContacts()) {
 351             String profileKeyString = contact.profileKey;
 352             if (profileKeyString == null) {
 353                 continue;
 354             }
 355             final ProfileKey profileKey;
 356             try {
 357                 profileKey = new ProfileKey(Base64.decode(profileKeyString));
 358             } catch (InvalidInputException | IOException e) {
 359                 continue;
 360             }
 361             contact.profileKey = null;
 362             account.getProfileStore().storeProfileKey(contact.getAddress(), profileKey);
 363         }
 364         // Ensure our profile key is stored in profile store
 365         account.getProfileStore().storeProfileKey(getSelfAddress(), account.getProfileKey());
 366     }
 367
 368     public void checkAccountState() throws IOException {
 369         if (account.isRegistered()) {
 370             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 371                 refreshPreKeys();
 372                 account.save();
 373             }
 374             if (account.getUuid() == null) {
 375                 account.setUuid(accountManager.getOwnUuid());
 376                 account.save();
 377             }
 378             updateAccountAttributes();
 379         }
 380     }
 381
 382     public boolean isRegistered() {
 383         return account.isRegistered();
 384     }
 385
 386     /**
 387      * This is used for checking a set of phone numbers for registration on Signal
 388      *
 389      * @param numbers The set of phone number in question
 390      * @return A map of numbers to booleans. True if registered, false otherwise. Should never be null
 391      * @throws IOException if its unable to check if the users are registered
 392      */
 393     public Map<String, Boolean> areUsersRegistered(Set<String> numbers) throws IOException {
 394         // Note "contactDetails" has no optionals. It only gives us info on users who are registered
 395         List<ContactTokenDetails> contactDetails = this.accountManager.getContacts(numbers);
 396
 397         // Make the initial map with all numbers set to false for now
 398         Map<String, Boolean> usersRegistered = numbers.stream().collect(Collectors.toMap(x -> x, x -> false));
 399
 400         // Override the contacts we did obtain
 401         for (ContactTokenDetails contactDetail : contactDetails) {
 402             usersRegistered.put(contactDetail.getNumber(), true);
 403         }
 404
 405         return usersRegistered;
 406     }
 407
 408     public void register(boolean voiceVerification, String captcha) throws IOException {
 409         account.setPassword(KeyUtils.createPassword());
 410
 411         // Resetting UUID, because registering doesn't work otherwise
 412         account.setUuid(null);
 413         createSignalServiceAccountManager();
 414
 415         if (voiceVerification) {
 416             accountManager.requestVoiceVerificationCode(Locale.getDefault(),
 417                     Optional.fromNullable(captcha),
 418                     Optional.absent());
 419         } else {
 420             accountManager.requestSmsVerificationCode(false, Optional.fromNullable(captcha), Optional.absent());
 421         }
 422
 423         account.setRegistered(false);
 424         account.save();
 425     }
 426
 427     public void updateAccountAttributes() throws IOException {
 428         accountManager.setAccountAttributes(account.getSignalingKey(),
 429                 account.getSignalProtocolStore().getLocalRegistrationId(),
 430                 true,
 431                 // set legacy pin only if no KBS master key is set
 432                 account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
 433                 account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 434                 unidentifiedAccessHelper.getSelfUnidentifiedAccessKey(),
 435                 unrestrictedUnidentifiedAccess,
 436                 capabilities,
 437                 discoverableByPhoneNumber);
 438     }
 439
 440     public void setProfile(String name, File avatar) throws IOException {
 441         try (final StreamDetails streamDetails = avatar == null ? null : Utils.createStreamDetailsFromFile(avatar)) {
 442             accountManager.setVersionedProfile(account.getUuid(), account.getProfileKey(), name, streamDetails);
 443         }
 444     }
 445
 446     public void unregister() throws IOException {
 447         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 448         // If this is the master device, other users can't send messages to this number anymore.
 449         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 450         accountManager.setGcmId(Optional.absent());
 451
 452         account.setRegistered(false);
 453         account.save();
 454     }
 455
 456     public List<DeviceInfo> getLinkedDevices() throws IOException {
 457         List<DeviceInfo> devices = accountManager.getDevices();
 458         account.setMultiDevice(devices.size() > 1);
 459         account.save();
 460         return devices;
 461     }
 462
 463     public void removeLinkedDevices(int deviceId) throws IOException {
 464         accountManager.removeDevice(deviceId);
 465         List<DeviceInfo> devices = accountManager.getDevices();
 466         account.setMultiDevice(devices.size() > 1);
 467         account.save();
 468     }
 469
 470     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 471         DeviceLinkInfo info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 472
 473         addDevice(info.deviceIdentifier, info.deviceKey);
 474     }
 475
 476     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 477         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 478         String verificationCode = accountManager.getNewDeviceVerificationCode();
 479
 480         accountManager.addDevice(deviceIdentifier,
 481                 deviceKey,
 482                 identityKeyPair,
 483                 Optional.of(account.getProfileKey().serialize()),
 484                 verificationCode);
 485         account.setMultiDevice(true);
 486         account.save();
 487     }
 488
 489     private List<PreKeyRecord> generatePreKeys() {
 490         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 491
 492         final int offset = account.getPreKeyIdOffset();
 493         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 494             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 495             ECKeyPair keyPair = Curve.generateKeyPair();
 496             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 497
 498             records.add(record);
 499         }
 500
 501         account.addPreKeys(records);
 502         account.save();
 503
 504         return records;
 505     }
 506
 507     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 508         try {
 509             ECKeyPair keyPair = Curve.generateKeyPair();
 510             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(),
 511                     keyPair.getPublicKey().serialize());
 512             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(),
 513                     System.currentTimeMillis(),
 514                     keyPair,
 515                     signature);
 516
 517             account.addSignedPreKey(record);
 518             account.save();
 519
 520             return record;
 521         } catch (InvalidKeyException e) {
 522             throw new AssertionError(e);
 523         }
 524     }
 525
 526     public void verifyAccount(
 527             String verificationCode,
 528             String pin
 529     ) throws IOException, KeyBackupSystemNoDataException, KeyBackupServicePinException {
 530         verificationCode = verificationCode.replace("-", "");
 531         account.setSignalingKey(KeyUtils.createSignalingKey());
 532         VerifyAccountResponse response;
 533         try {
 534             response = verifyAccountWithCode(verificationCode, pin, null);
 535         } catch (LockedException e) {
 536             if (pin == null) {
 537                 throw e;
 538             }
 539
 540             KbsPinData registrationLockData = pinHelper.getRegistrationLockData(pin, e);
 541             if (registrationLockData == null) {
 542                 throw e;
 543             }
 544
 545             String registrationLock = registrationLockData.getMasterKey().deriveRegistrationLock();
 546             try {
 547                 response = verifyAccountWithCode(verificationCode, null, registrationLock);
 548             } catch (LockedException _e) {
 549                 throw new AssertionError("KBS Pin appeared to matched but reg lock still failed!");
 550             }
 551             account.setPinMasterKey(registrationLockData.getMasterKey());
 552         }
 553
 554         // TODO response.isStorageCapable()
 555         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 556
 557         account.setRegistered(true);
 558         account.setUuid(UuidUtil.parseOrNull(response.getUuid()));
 559         account.setRegistrationLockPin(pin);
 560         account.getSignalProtocolStore()
 561                 .saveIdentity(account.getSelfAddress(),
 562                         getIdentityKeyPair().getPublicKey(),
 563                         TrustLevel.TRUSTED_VERIFIED);
 564
 565         refreshPreKeys();
 566         account.save();
 567     }
 568
 569     private VerifyAccountResponse verifyAccountWithCode(
 570             final String verificationCode, final String legacyPin, final String registrationLock
 571     ) throws IOException {
 572         return accountManager.verifyAccountWithCode(verificationCode,
 573                 account.getSignalingKey(),
 574                 account.getSignalProtocolStore().getLocalRegistrationId(),
 575                 true,
 576                 legacyPin,
 577                 registrationLock,
 578                 unidentifiedAccessHelper.getSelfUnidentifiedAccessKey(),
 579                 unrestrictedUnidentifiedAccess,
 580                 capabilities,
 581                 discoverableByPhoneNumber);
 582     }
 583
 584     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 585         if (pin.isPresent()) {
 586             final MasterKey masterKey = account.getPinMasterKey() != null
 587                     ? account.getPinMasterKey()
 588                     : KeyUtils.createMasterKey();
 589
 590             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 591
 592             account.setRegistrationLockPin(pin.get());
 593             account.setPinMasterKey(masterKey);
 594         } else {
 595             // Remove legacy registration lock
 596             accountManager.removeRegistrationLockV1();
 597
 598             // Remove KBS Pin
 599             pinHelper.removeRegistrationLockPin();
 600
 601             account.setRegistrationLockPin(null);
 602             account.setPinMasterKey(null);
 603         }
 604         account.save();
 605     }
 606
 607     void refreshPreKeys() throws IOException {
 608         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 609         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 610         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 611
 612         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 613     }
 614
 615     private SignalServiceMessageReceiver createMessageReceiver() {
 616         final ClientZkProfileOperations clientZkProfileOperations = capabilities.isGv2() ? ClientZkOperations.create(
 617                 serviceConfiguration).getProfileOperations() : null;
 618         return new SignalServiceMessageReceiver(serviceConfiguration,
 619                 account.getUuid(),
 620                 account.getUsername(),
 621                 account.getPassword(),
 622                 account.getDeviceId(),
 623                 account.getSignalingKey(),
 624                 userAgent,
 625                 null,
 626                 timer,
 627                 clientZkProfileOperations);
 628     }
 629
 630     private SignalServiceMessageReceiver getOrCreateMessageReceiver() {
 631         if (messageReceiver == null) {
 632             messageReceiver = createMessageReceiver();
 633         }
 634         return messageReceiver;
 635     }
 636
 637     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 638         if (messagePipe == null) {
 639             messagePipe = getOrCreateMessageReceiver().createMessagePipe();
 640         }
 641         return messagePipe;
 642     }
 643
 644     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 645         if (unidentifiedMessagePipe == null) {
 646             unidentifiedMessagePipe = getOrCreateMessageReceiver().createUnidentifiedMessagePipe();
 647         }
 648         return unidentifiedMessagePipe;
 649     }
 650
 651     private SignalServiceMessageSender createMessageSender() {
 652         final ClientZkProfileOperations clientZkProfileOperations = capabilities.isGv2() ? ClientZkOperations.create(
 653                 serviceConfiguration).getProfileOperations() : null;
 654         final ExecutorService executor = null;
 655         return new SignalServiceMessageSender(serviceConfiguration,
 656                 account.getUuid(),
 657                 account.getUsername(),
 658                 account.getPassword(),
 659                 account.getDeviceId(),
 660                 account.getSignalProtocolStore(),
 661                 userAgent,
 662                 account.isMultiDevice(),
 663                 Optional.fromNullable(messagePipe),
 664                 Optional.fromNullable(unidentifiedMessagePipe),
 665                 Optional.absent(),
 666                 clientZkProfileOperations,
 667                 executor,
 668                 ServiceConfig.MAX_ENVELOPE_SIZE);
 669     }
 670
 671     private SignalServiceProfile getEncryptedRecipientProfile(SignalServiceAddress address) throws IOException {
 672         return profileHelper.retrieveProfileSync(address, SignalServiceProfile.RequestType.PROFILE).getProfile();
 673     }
 674
 675     private SignalProfile getRecipientProfile(
 676             SignalServiceAddress address
 677     ) {
 678         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 679         if (profileEntry == null) {
 680             return null;
 681         }
 682         long now = new Date().getTime();
 683         // Profiles are cache for 24h before retrieving them again
 684         if (!profileEntry.isRequestPending() && (
 685                 profileEntry.getProfile() == null || now - profileEntry.getLastUpdateTimestamp() > 24 * 60 * 60 * 1000
 686         )) {
 687             ProfileKey profileKey = profileEntry.getProfileKey();
 688             profileEntry.setRequestPending(true);
 689             SignalProfile profile;
 690             try {
 691                 profile = retrieveRecipientProfile(address, profileKey);
 692             } catch (IOException e) {
 693                 logger.warn("Failed to retrieve profile, ignoring: {}", e.getMessage());
 694                 profileEntry.setRequestPending(false);
 695                 return null;
 696             }
 697             profileEntry.setRequestPending(false);
 698             account.getProfileStore()
 699                     .updateProfile(address, profileKey, now, profile, profileEntry.getProfileKeyCredential());
 700             return profile;
 701         }
 702         return profileEntry.getProfile();
 703     }
 704
 705     private ProfileKeyCredential getRecipientProfileKeyCredential(SignalServiceAddress address) {
 706         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 707         if (profileEntry == null) {
 708             return null;
 709         }
 710         if (profileEntry.getProfileKeyCredential() == null) {
 711             ProfileAndCredential profileAndCredential;
 712             try {
 713                 profileAndCredential = profileHelper.retrieveProfileSync(address,
 714                         SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 715             } catch (IOException e) {
 716                 logger.warn("Failed to retrieve profile key credential, ignoring: {}", e.getMessage());
 717                 return null;
 718             }
 719
 720             long now = new Date().getTime();
 721             final ProfileKeyCredential profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 722             final SignalProfile profile = decryptProfile(address,
 723                     profileEntry.getProfileKey(),
 724                     profileAndCredential.getProfile());
 725             account.getProfileStore()
 726                     .updateProfile(address, profileEntry.getProfileKey(), now, profile, profileKeyCredential);
 727             return profileKeyCredential;
 728         }
 729         return profileEntry.getProfileKeyCredential();
 730     }
 731
 732     private SignalProfile retrieveRecipientProfile(
 733             SignalServiceAddress address, ProfileKey profileKey
 734     ) throws IOException {
 735         final SignalServiceProfile encryptedProfile = getEncryptedRecipientProfile(address);
 736
 737         return decryptProfile(address, profileKey, encryptedProfile);
 738     }
 739
 740     private SignalProfile decryptProfile(
 741             final SignalServiceAddress address, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 742     ) {
 743         File avatarFile = null;
 744         try {
 745             avatarFile = encryptedProfile.getAvatar() == null
 746                     ? null
 747                     : retrieveProfileAvatar(address, encryptedProfile.getAvatar(), profileKey);
 748         } catch (Throwable e) {
 749             logger.warn("Failed to retrieve profile avatar, ignoring: {}", e.getMessage());
 750         }
 751
 752         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 753         try {
 754             String name;
 755             try {
 756                 name = encryptedProfile.getName() == null
 757                         ? null
 758                         : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName())));
 759             } catch (IOException e) {
 760                 name = null;
 761             }
 762             String unidentifiedAccess;
 763             try {
 764                 unidentifiedAccess = encryptedProfile.getUnidentifiedAccess() == null
 765                         || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess()))
 766                         ? null
 767                         : encryptedProfile.getUnidentifiedAccess();
 768             } catch (IOException e) {
 769                 unidentifiedAccess = null;
 770             }
 771             return new SignalProfile(encryptedProfile.getIdentityKey(),
 772                     name,
 773                     avatarFile,
 774                     unidentifiedAccess,
 775                     encryptedProfile.isUnrestrictedUnidentifiedAccess(),
 776                     encryptedProfile.getCapabilities());
 777         } catch (InvalidCiphertextException e) {
 778             return null;
 779         }
 780     }
 781
 782     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(GroupId groupId) throws IOException {
 783         File file = getGroupAvatarFile(groupId);
 784         if (!file.exists()) {
 785             return Optional.absent();
 786         }
 787
 788         return Optional.of(AttachmentUtils.createAttachment(file));
 789     }
 790
 791     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 792         File file = getContactAvatarFile(number);
 793         if (!file.exists()) {
 794             return Optional.absent();
 795         }
 796
 797         return Optional.of(AttachmentUtils.createAttachment(file));
 798     }
 799
 800     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 801         GroupInfo g = account.getGroupStore().getGroup(groupId);
 802         if (g == null) {
 803             throw new GroupNotFoundException(groupId);
 804         }
 805         if (!g.isMember(account.getSelfAddress())) {
 806             throw new NotAGroupMemberException(groupId, g.getTitle());
 807         }
 808         return g;
 809     }
 810
 811     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 812         GroupInfo g = account.getGroupStore().getGroup(groupId);
 813         if (g == null) {
 814             throw new GroupNotFoundException(groupId);
 815         }
 816         if (!g.isMember(account.getSelfAddress()) && !g.isPendingMember(account.getSelfAddress())) {
 817             throw new NotAGroupMemberException(groupId, g.getTitle());
 818         }
 819         return g;
 820     }
 821
 822     public List<GroupInfo> getGroups() {
 823         return account.getGroupStore().getGroups();
 824     }
 825
 826     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 827             SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
 828     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 829         final GroupInfo g = getGroupForSending(groupId);
 830
 831         GroupUtils.setGroupContext(messageBuilder, g);
 832         messageBuilder.withExpiration(g.getMessageExpirationTime());
 833
 834         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 835     }
 836
 837     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 838             String messageText, List<String> attachments, GroupId groupId
 839     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 840         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 841                 .withBody(messageText);
 842         if (attachments != null) {
 843             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 844         }
 845
 846         return sendGroupMessage(messageBuilder, groupId);
 847     }
 848
 849     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 850             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, GroupId groupId
 851     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 852         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
 853                 remove,
 854                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 855                 targetSentTimestamp);
 856         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 857                 .withReaction(reaction);
 858
 859         return sendGroupMessage(messageBuilder, groupId);
 860     }
 861
 862     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(GroupId groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 863
 864         SignalServiceDataMessage.Builder messageBuilder;
 865
 866         final GroupInfo g = getGroupForUpdating(groupId);
 867         if (g instanceof GroupInfoV1) {
 868             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
 869             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 870                     .withId(groupId.serialize())
 871                     .build();
 872             messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 873             groupInfoV1.removeMember(account.getSelfAddress());
 874             account.getGroupStore().updateGroup(groupInfoV1);
 875         } else {
 876             final GroupInfoV2 groupInfoV2 = (GroupInfoV2) g;
 877             final Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.leaveGroup(groupInfoV2);
 878             groupInfoV2.setGroup(groupGroupChangePair.first());
 879             messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 880             account.getGroupStore().updateGroup(groupInfoV2);
 881         }
 882
 883         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 884     }
 885
 886     private Pair<GroupId, List<SendMessageResult>> sendUpdateGroupMessage(
 887             GroupId groupId, String name, Collection<SignalServiceAddress> members, String avatarFile
 888     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 889         GroupInfo g;
 890         SignalServiceDataMessage.Builder messageBuilder;
 891         if (groupId == null) {
 892             // Create new group
 893             GroupInfoV2 gv2 = groupHelper.createGroupV2(name, members, avatarFile);
 894             if (gv2 == null) {
 895                 GroupInfoV1 gv1 = new GroupInfoV1(GroupIdV1.createRandom());
 896                 gv1.addMembers(List.of(account.getSelfAddress()));
 897                 updateGroupV1(gv1, name, members, avatarFile);
 898                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 899                 g = gv1;
 900             } else {
 901                 messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 902                 g = gv2;
 903             }
 904         } else {
 905             GroupInfo group = getGroupForUpdating(groupId);
 906             if (group instanceof GroupInfoV2) {
 907                 final GroupInfoV2 groupInfoV2 = (GroupInfoV2) group;
 908
 909                 Pair<Long, List<SendMessageResult>> result = null;
 910                 if (groupInfoV2.isPendingMember(getSelfAddress())) {
 911                     Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.acceptInvite(groupInfoV2);
 912                     result = sendUpdateGroupMessage(groupInfoV2,
 913                             groupGroupChangePair.first(),
 914                             groupGroupChangePair.second());
 915                 }
 916
 917                 if (members != null) {
 918                     final Set<SignalServiceAddress> newMembers = new HashSet<>(members);
 919                     newMembers.removeAll(group.getMembers()
 920                             .stream()
 921                             .map(this::resolveSignalServiceAddress)
 922                             .collect(Collectors.toSet()));
 923                     if (newMembers.size() > 0) {
 924                         Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2,
 925                                 newMembers);
 926                         result = sendUpdateGroupMessage(groupInfoV2,
 927                                 groupGroupChangePair.first(),
 928                                 groupGroupChangePair.second());
 929                     }
 930                 }
 931                 if (result == null || name != null || avatarFile != null) {
 932                     Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2,
 933                             name,
 934                             avatarFile);
 935                     result = sendUpdateGroupMessage(groupInfoV2,
 936                             groupGroupChangePair.first(),
 937                             groupGroupChangePair.second());
 938                 }
 939
 940                 return new Pair<>(group.getGroupId(), result.second());
 941             } else {
 942                 GroupInfoV1 gv1 = (GroupInfoV1) group;
 943                 updateGroupV1(gv1, name, members, avatarFile);
 944                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 945                 g = gv1;
 946             }
 947         }
 948
 949         account.getGroupStore().updateGroup(g);
 950
 951         final Pair<Long, List<SendMessageResult>> result = sendMessage(messageBuilder,
 952                 g.getMembersIncludingPendingWithout(account.getSelfAddress()));
 953         return new Pair<>(g.getGroupId(), result.second());
 954     }
 955
 956     public Pair<GroupId, List<SendMessageResult>> joinGroup(
 957             GroupInviteLinkUrl inviteLinkUrl
 958     ) throws IOException, GroupLinkNotActiveException {
 959         return sendJoinGroupMessage(inviteLinkUrl);
 960     }
 961
 962     private Pair<GroupId, List<SendMessageResult>> sendJoinGroupMessage(
 963             GroupInviteLinkUrl inviteLinkUrl
 964     ) throws IOException, GroupLinkNotActiveException {
 965         final DecryptedGroupJoinInfo groupJoinInfo = groupHelper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
 966                 inviteLinkUrl.getPassword());
 967         final GroupChange groupChange = groupHelper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
 968                 inviteLinkUrl.getPassword(),
 969                 groupJoinInfo);
 970         final GroupInfoV2 group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
 971                 groupJoinInfo.getRevision() + 1,
 972                 groupChange.toByteArray());
 973
 974         if (group.getGroup() == null) {
 975             // Only requested member, can't send update to group members
 976             return new Pair<>(group.getGroupId(), List.of());
 977         }
 978
 979         final Pair<Long, List<SendMessageResult>> result = sendUpdateGroupMessage(group, group.getGroup(), groupChange);
 980
 981         return new Pair<>(group.getGroupId(), result.second());
 982     }
 983
 984     private Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 985             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
 986     ) throws IOException {
 987         group.setGroup(newDecryptedGroup);
 988         final SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(group,
 989                 groupChange.toByteArray());
 990         account.getGroupStore().updateGroup(group);
 991         return sendMessage(messageBuilder, group.getMembersIncludingPendingWithout(account.getSelfAddress()));
 992     }
 993
 994     private void updateGroupV1(
 995             final GroupInfoV1 g,
 996             final String name,
 997             final Collection<SignalServiceAddress> members,
 998             final String avatarFile
 999     ) throws IOException {
1000         if (name != null) {
1001             g.name = name;
1002         }
1003
1004         if (members != null) {
1005             final Set<String> newE164Members = new HashSet<>();
1006             for (SignalServiceAddress member : members) {
1007                 if (g.isMember(member) || !member.getNumber().isPresent()) {
1008                     continue;
1009                 }
1010                 newE164Members.add(member.getNumber().get());
1011             }
1012
1013             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
1014             if (contacts.size() != newE164Members.size()) {
1015                 // Some of the new members are not registered on Signal
1016                 for (ContactTokenDetails contact : contacts) {
1017                     newE164Members.remove(contact.getNumber());
1018                 }
1019                 throw new IOException("Failed to add members "
1020                         + String.join(", ", newE164Members)
1021                         + " to group: Not registered on Signal");
1022             }
1023
1024             g.addMembers(members);
1025         }
1026
1027         if (avatarFile != null) {
1028             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1029             File aFile = getGroupAvatarFile(g.getGroupId());
1030             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
1031         }
1032     }
1033
1034     Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
1035             GroupIdV1 groupId, SignalServiceAddress recipient
1036     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
1037         GroupInfoV1 g;
1038         GroupInfo group = getGroupForSending(groupId);
1039         if (!(group instanceof GroupInfoV1)) {
1040             throw new RuntimeException("Received an invalid group request for a v2 group!");
1041         }
1042         g = (GroupInfoV1) group;
1043
1044         if (!g.isMember(recipient)) {
1045             throw new NotAGroupMemberException(groupId, g.name);
1046         }
1047
1048         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
1049
1050         // Send group message only to the recipient who requested it
1051         return sendMessage(messageBuilder, List.of(recipient));
1052     }
1053
1054     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
1055         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
1056                 .withId(g.getGroupId().serialize())
1057                 .withName(g.name)
1058                 .withMembers(new ArrayList<>(g.getMembers()));
1059
1060         File aFile = getGroupAvatarFile(g.getGroupId());
1061         if (aFile.exists()) {
1062             try {
1063                 group.withAvatar(AttachmentUtils.createAttachment(aFile));
1064             } catch (IOException e) {
1065                 throw new AttachmentInvalidException(aFile.toString(), e);
1066             }
1067         }
1068
1069         return SignalServiceDataMessage.newBuilder()
1070                 .asGroupMessage(group.build())
1071                 .withExpiration(g.getMessageExpirationTime());
1072     }
1073
1074     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
1075         SignalServiceGroupV2.Builder group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
1076                 .withRevision(g.getGroup().getRevision())
1077                 .withSignedGroupChange(signedGroupChange);
1078         return SignalServiceDataMessage.newBuilder()
1079                 .asGroupMessage(group.build())
1080                 .withExpiration(g.getMessageExpirationTime());
1081     }
1082
1083     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
1084             GroupIdV1 groupId, SignalServiceAddress recipient
1085     ) throws IOException {
1086         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
1087                 .withId(groupId.serialize());
1088
1089         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1090                 .asGroupMessage(group.build());
1091
1092         // Send group info request message to the recipient who sent us a message with this groupId
1093         return sendMessage(messageBuilder, List.of(recipient));
1094     }
1095
1096     void sendReceipt(
1097             SignalServiceAddress remoteAddress, long messageId
1098     ) throws IOException, UntrustedIdentityException {
1099         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
1100                 List.of(messageId),
1101                 System.currentTimeMillis());
1102
1103         createMessageSender().sendReceipt(remoteAddress,
1104                 unidentifiedAccessHelper.getAccessFor(remoteAddress),
1105                 receiptMessage);
1106     }
1107
1108     public Pair<Long, List<SendMessageResult>> sendMessage(
1109             String messageText, List<String> attachments, List<String> recipients
1110     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
1111         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1112                 .withBody(messageText);
1113         if (attachments != null) {
1114             List<SignalServiceAttachment> attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
1115
1116             // Upload attachments here, so we only upload once even for multiple recipients
1117             SignalServiceMessageSender messageSender = createMessageSender();
1118             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
1119             for (SignalServiceAttachment attachment : attachmentStreams) {
1120                 if (attachment.isStream()) {
1121                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
1122                 } else if (attachment.isPointer()) {
1123                     attachmentPointers.add(attachment.asPointer());
1124                 }
1125             }
1126
1127             messageBuilder.withAttachments(attachmentPointers);
1128         }
1129         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1130     }
1131
1132     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
1133             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
1134     ) throws IOException, InvalidNumberException {
1135         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
1136                 remove,
1137                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
1138                 targetSentTimestamp);
1139         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1140                 .withReaction(reaction);
1141         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1142     }
1143
1144     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1145         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
1146
1147         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
1148         try {
1149             return sendMessage(messageBuilder, signalServiceAddresses);
1150         } catch (Exception e) {
1151             for (SignalServiceAddress address : signalServiceAddresses) {
1152                 handleEndSession(address);
1153             }
1154             account.save();
1155             throw e;
1156         }
1157     }
1158
1159     public String getContactName(String number) throws InvalidNumberException {
1160         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
1161         if (contact == null) {
1162             return "";
1163         } else {
1164             return contact.name;
1165         }
1166     }
1167
1168     public void setContactName(String number, String name) throws InvalidNumberException {
1169         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1170         ContactInfo contact = account.getContactStore().getContact(address);
1171         if (contact == null) {
1172             contact = new ContactInfo(address);
1173         }
1174         contact.name = name;
1175         account.getContactStore().updateContact(contact);
1176         account.save();
1177     }
1178
1179     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
1180         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
1181     }
1182
1183     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
1184         ContactInfo contact = account.getContactStore().getContact(address);
1185         if (contact == null) {
1186             contact = new ContactInfo(address);
1187         }
1188         contact.blocked = blocked;
1189         account.getContactStore().updateContact(contact);
1190         account.save();
1191     }
1192
1193     public void setGroupBlocked(final GroupId groupId, final boolean blocked) throws GroupNotFoundException {
1194         GroupInfo group = getGroup(groupId);
1195         if (group == null) {
1196             throw new GroupNotFoundException(groupId);
1197         }
1198
1199         group.setBlocked(blocked);
1200         account.getGroupStore().updateGroup(group);
1201         account.save();
1202     }
1203
1204     public Pair<GroupId, List<SendMessageResult>> updateGroup(
1205             GroupId groupId, String name, List<String> members, String avatar
1206     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
1207         return sendUpdateGroupMessage(groupId,
1208                 name,
1209                 members == null ? null : getSignalServiceAddresses(members),
1210                 avatar);
1211     }
1212
1213     /**
1214      * Change the expiration timer for a contact
1215      */
1216     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
1217         ContactInfo contact = account.getContactStore().getContact(address);
1218         contact.messageExpirationTime = messageExpirationTimer;
1219         account.getContactStore().updateContact(contact);
1220         sendExpirationTimerUpdate(address);
1221         account.save();
1222     }
1223
1224     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
1225         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1226                 .asExpirationUpdate();
1227         sendMessage(messageBuilder, List.of(address));
1228     }
1229
1230     /**
1231      * Change the expiration timer for a contact
1232      */
1233     public void setExpirationTimer(
1234             String number, int messageExpirationTimer
1235     ) throws IOException, InvalidNumberException {
1236         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1237         setExpirationTimer(address, messageExpirationTimer);
1238     }
1239
1240     /**
1241      * Change the expiration timer for a group
1242      */
1243     public void setExpirationTimer(GroupId groupId, int messageExpirationTimer) {
1244         GroupInfo g = account.getGroupStore().getGroup(groupId);
1245         if (g instanceof GroupInfoV1) {
1246             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
1247             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1248             account.getGroupStore().updateGroup(groupInfoV1);
1249         } else {
1250             throw new RuntimeException("TODO Not implemented!");
1251         }
1252     }
1253
1254     /**
1255      * Upload the sticker pack from path.
1256      *
1257      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1258      * @return if successful, returns the URL to install the sticker pack in the signal app
1259      */
1260     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1261         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
1262
1263         SignalServiceMessageSender messageSender = createMessageSender();
1264
1265         byte[] packKey = KeyUtils.createStickerUploadKey();
1266         String packId = messageSender.uploadStickerManifest(manifest, packKey);
1267
1268         Sticker sticker = new Sticker(Hex.fromStringCondensed(packId), packKey);
1269         account.getStickerStore().updateSticker(sticker);
1270         account.save();
1271
1272         try {
1273             return new URI("https",
1274                     "signal.art",
1275                     "/addstickers/",
1276                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1277                             Hex.toStringCondensed(packKey),
1278                             StandardCharsets.UTF_8)).toString();
1279         } catch (URISyntaxException e) {
1280             throw new AssertionError(e);
1281         }
1282     }
1283
1284     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(
1285             final File file
1286     ) throws IOException, StickerPackInvalidException {
1287         ZipFile zip = null;
1288         String rootPath = null;
1289
1290         if (file.getName().endsWith(".zip")) {
1291             zip = new ZipFile(file);
1292         } else if (file.getName().equals("manifest.json")) {
1293             rootPath = file.getParent();
1294         } else {
1295             throw new StickerPackInvalidException("Could not find manifest.json");
1296         }
1297
1298         JsonStickerPack pack = parseStickerPack(rootPath, zip);
1299
1300         if (pack.stickers == null) {
1301             throw new StickerPackInvalidException("Must set a 'stickers' field.");
1302         }
1303
1304         if (pack.stickers.isEmpty()) {
1305             throw new StickerPackInvalidException("Must include stickers.");
1306         }
1307
1308         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
1309         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
1310             if (sticker.file == null) {
1311                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
1312             }
1313
1314             Pair<InputStream, Long> data;
1315             try {
1316                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
1317             } catch (IOException ignored) {
1318                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
1319             }
1320
1321             String contentType = Utils.getFileMimeType(new File(sticker.file), null);
1322             StickerInfo stickerInfo = new StickerInfo(data.first(),
1323                     data.second(),
1324                     Optional.fromNullable(sticker.emoji).or(""),
1325                     contentType);
1326             stickers.add(stickerInfo);
1327         }
1328
1329         StickerInfo cover = null;
1330         if (pack.cover != null) {
1331             if (pack.cover.file == null) {
1332                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
1333             }
1334
1335             Pair<InputStream, Long> data;
1336             try {
1337                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
1338             } catch (IOException ignored) {
1339                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
1340             }
1341
1342             String contentType = Utils.getFileMimeType(new File(pack.cover.file), null);
1343             cover = new StickerInfo(data.first(),
1344                     data.second(),
1345                     Optional.fromNullable(pack.cover.emoji).or(""),
1346                     contentType);
1347         }
1348
1349         return new SignalServiceStickerManifestUpload(pack.title, pack.author, cover, stickers);
1350     }
1351
1352     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
1353         InputStream inputStream;
1354         if (zip != null) {
1355             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
1356         } else {
1357             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
1358         }
1359         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
1360     }
1361
1362     private static Pair<InputStream, Long> getInputStreamAndLength(
1363             final String rootPath, final ZipFile zip, final String subfile
1364     ) throws IOException {
1365         if (zip != null) {
1366             final ZipEntry entry = zip.getEntry(subfile);
1367             return new Pair<>(zip.getInputStream(entry), entry.getSize());
1368         } else {
1369             final File file = new File(rootPath, subfile);
1370             return new Pair<>(new FileInputStream(file), file.length());
1371         }
1372     }
1373
1374     void requestSyncGroups() throws IOException {
1375         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1376                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1377                 .build();
1378         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1379         try {
1380             sendSyncMessage(message);
1381         } catch (UntrustedIdentityException e) {
1382             e.printStackTrace();
1383         }
1384     }
1385
1386     void requestSyncContacts() throws IOException {
1387         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1388                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1389                 .build();
1390         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1391         try {
1392             sendSyncMessage(message);
1393         } catch (UntrustedIdentityException e) {
1394             e.printStackTrace();
1395         }
1396     }
1397
1398     void requestSyncBlocked() throws IOException {
1399         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1400                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1401                 .build();
1402         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1403         try {
1404             sendSyncMessage(message);
1405         } catch (UntrustedIdentityException e) {
1406             e.printStackTrace();
1407         }
1408     }
1409
1410     void requestSyncConfiguration() throws IOException {
1411         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1412                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1413                 .build();
1414         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1415         try {
1416             sendSyncMessage(message);
1417         } catch (UntrustedIdentityException e) {
1418             e.printStackTrace();
1419         }
1420     }
1421
1422     private byte[] getSenderCertificate() {
1423         // TODO support UUID capable sender certificates
1424         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1425         byte[] certificate;
1426         try {
1427             certificate = accountManager.getSenderCertificate();
1428         } catch (IOException e) {
1429             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1430             return null;
1431         }
1432         // TODO cache for a day
1433         return certificate;
1434     }
1435
1436     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1437         SignalServiceMessageSender messageSender = createMessageSender();
1438         try {
1439             messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1440         } catch (UntrustedIdentityException e) {
1441             account.getSignalProtocolStore()
1442                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1443                             e.getIdentityKey(),
1444                             TrustLevel.UNTRUSTED);
1445             throw e;
1446         }
1447     }
1448
1449     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1450         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1451         final Set<SignalServiceAddress> missingUuids = new HashSet<>();
1452
1453         for (String number : numbers) {
1454             final SignalServiceAddress resolvedAddress = canonicalizeAndResolveSignalServiceAddress(number);
1455             if (resolvedAddress.getUuid().isPresent()) {
1456                 signalServiceAddresses.add(resolvedAddress);
1457             } else {
1458                 missingUuids.add(resolvedAddress);
1459             }
1460         }
1461
1462         Map<String, UUID> registeredUsers;
1463         try {
1464             registeredUsers = accountManager.getRegisteredUsers(getIasKeyStore(),
1465                     missingUuids.stream().map(a -> a.getNumber().get()).collect(Collectors.toSet()),
1466                     CDS_MRENCLAVE);
1467         } catch (IOException | Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException e) {
1468             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1469             registeredUsers = new HashMap<>();
1470         }
1471
1472         for (SignalServiceAddress address : missingUuids) {
1473             final String number = address.getNumber().get();
1474             if (registeredUsers.containsKey(number)) {
1475                 final SignalServiceAddress newAddress = resolveSignalServiceAddress(new SignalServiceAddress(
1476                         registeredUsers.get(number),
1477                         number));
1478                 signalServiceAddresses.add(newAddress);
1479             } else {
1480                 signalServiceAddresses.add(address);
1481             }
1482         }
1483
1484         return signalServiceAddresses;
1485     }
1486
1487     private Pair<Long, List<SendMessageResult>> sendMessage(
1488             SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients
1489     ) throws IOException {
1490         recipients = recipients.stream().map(this::resolveSignalServiceAddress).collect(Collectors.toSet());
1491         final long timestamp = System.currentTimeMillis();
1492         messageBuilder.withTimestamp(timestamp);
1493         getOrCreateMessagePipe();
1494         getOrCreateUnidentifiedMessagePipe();
1495         SignalServiceDataMessage message = null;
1496         try {
1497             message = messageBuilder.build();
1498             if (message.getGroupContext().isPresent()) {
1499                 try {
1500                     SignalServiceMessageSender messageSender = createMessageSender();
1501                     final boolean isRecipientUpdate = false;
1502                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients),
1503                             unidentifiedAccessHelper.getAccessFor(recipients),
1504                             isRecipientUpdate,
1505                             message);
1506                     for (SendMessageResult r : result) {
1507                         if (r.getIdentityFailure() != null) {
1508                             account.getSignalProtocolStore()
1509                                     .saveIdentity(r.getAddress(),
1510                                             r.getIdentityFailure().getIdentityKey(),
1511                                             TrustLevel.UNTRUSTED);
1512                         }
1513                     }
1514                     return new Pair<>(timestamp, result);
1515                 } catch (UntrustedIdentityException e) {
1516                     account.getSignalProtocolStore()
1517                             .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1518                                     e.getIdentityKey(),
1519                                     TrustLevel.UNTRUSTED);
1520                     return new Pair<>(timestamp, List.of());
1521                 }
1522             } else {
1523                 // Send to all individually, so sync messages are sent correctly
1524                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1525                 for (SignalServiceAddress address : recipients) {
1526                     ContactInfo contact = account.getContactStore().getContact(address);
1527                     if (contact != null) {
1528                         messageBuilder.withExpiration(contact.messageExpirationTime);
1529                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1530                     } else {
1531                         messageBuilder.withExpiration(0);
1532                         messageBuilder.withProfileKey(null);
1533                     }
1534                     message = messageBuilder.build();
1535                     if (address.matches(account.getSelfAddress())) {
1536                         results.add(sendSelfMessage(message));
1537                     } else {
1538                         results.add(sendMessage(address, message));
1539                     }
1540                 }
1541                 return new Pair<>(timestamp, results);
1542             }
1543         } finally {
1544             if (message != null && message.isEndSession()) {
1545                 for (SignalServiceAddress recipient : recipients) {
1546                     handleEndSession(recipient);
1547                 }
1548             }
1549             account.save();
1550         }
1551     }
1552
1553     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1554         SignalServiceMessageSender messageSender = createMessageSender();
1555
1556         SignalServiceAddress recipient = account.getSelfAddress();
1557
1558         final Optional<UnidentifiedAccessPair> unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipient);
1559         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1560                 message.getTimestamp(),
1561                 message,
1562                 message.getExpiresInSeconds(),
1563                 Map.of(recipient, unidentifiedAccess.isPresent()),
1564                 false);
1565         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1566
1567         try {
1568             long startTime = System.currentTimeMillis();
1569             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1570             return SendMessageResult.success(recipient,
1571                     unidentifiedAccess.isPresent(),
1572                     false,
1573                     System.currentTimeMillis() - startTime);
1574         } catch (UntrustedIdentityException e) {
1575             account.getSignalProtocolStore()
1576                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1577                             e.getIdentityKey(),
1578                             TrustLevel.UNTRUSTED);
1579             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1580         }
1581     }
1582
1583     private SendMessageResult sendMessage(
1584             SignalServiceAddress address, SignalServiceDataMessage message
1585     ) throws IOException {
1586         SignalServiceMessageSender messageSender = createMessageSender();
1587
1588         try {
1589             return messageSender.sendMessage(address, unidentifiedAccessHelper.getAccessFor(address), message);
1590         } catch (UntrustedIdentityException e) {
1591             account.getSignalProtocolStore()
1592                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1593                             e.getIdentityKey(),
1594                             TrustLevel.UNTRUSTED);
1595             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1596         }
1597     }
1598
1599     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1600         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(),
1601                 account.getSignalProtocolStore(),
1602                 certificateValidator);
1603         try {
1604             return cipher.decrypt(envelope);
1605         } catch (ProtocolUntrustedIdentityException e) {
1606             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1607                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e
1608                         .getCause();
1609                 account.getSignalProtocolStore()
1610                         .saveIdentity(resolveSignalServiceAddress(identityException.getName()),
1611                                 identityException.getUntrustedIdentity(),
1612                                 TrustLevel.UNTRUSTED);
1613                 throw identityException;
1614             }
1615             throw new AssertionError(e);
1616         }
1617     }
1618
1619     private void handleEndSession(SignalServiceAddress source) {
1620         account.getSignalProtocolStore().deleteAllSessions(source);
1621     }
1622
1623     private static int currentTimeDays() {
1624         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
1625     }
1626
1627     private GroupsV2AuthorizationString getGroupAuthForToday(
1628             final GroupSecretParams groupSecretParams
1629     ) throws IOException {
1630         final int today = currentTimeDays();
1631         // Returns credentials for the next 7 days
1632         final HashMap<Integer, AuthCredentialResponse> credentials = groupsV2Api.getCredentials(today);
1633         // TODO cache credentials until they expire
1634         AuthCredentialResponse authCredentialResponse = credentials.get(today);
1635         try {
1636             return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
1637                     today,
1638                     groupSecretParams,
1639                     authCredentialResponse);
1640         } catch (VerificationFailedException e) {
1641             throw new IOException(e);
1642         }
1643     }
1644
1645     private List<HandleAction> handleSignalServiceDataMessage(
1646             SignalServiceDataMessage message,
1647             boolean isSync,
1648             SignalServiceAddress source,
1649             SignalServiceAddress destination,
1650             boolean ignoreAttachments
1651     ) {
1652         List<HandleAction> actions = new ArrayList<>();
1653         if (message.getGroupContext().isPresent()) {
1654             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1655                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1656                 GroupIdV1 groupId = GroupId.v1(groupInfo.getGroupId());
1657                 GroupInfo group = account.getGroupStore().getGroup(groupId);
1658                 if (group == null || group instanceof GroupInfoV1) {
1659                     GroupInfoV1 groupV1 = (GroupInfoV1) group;
1660                     switch (groupInfo.getType()) {
1661                         case UPDATE: {
1662                             if (groupV1 == null) {
1663                                 groupV1 = new GroupInfoV1(groupId);
1664                             }
1665
1666                             if (groupInfo.getAvatar().isPresent()) {
1667                                 SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1668                                 if (avatar.isPointer()) {
1669                                     try {
1670                                         retrieveGroupAvatarAttachment(avatar.asPointer(), groupV1.getGroupId());
1671                                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1672                                         logger.warn("Failed to retrieve avatar for group {}, ignoring: {}",
1673                                                 groupId.toBase64(),
1674                                                 e.getMessage());
1675                                     }
1676                                 }
1677                             }
1678
1679                             if (groupInfo.getName().isPresent()) {
1680                                 groupV1.name = groupInfo.getName().get();
1681                             }
1682
1683                             if (groupInfo.getMembers().isPresent()) {
1684                                 groupV1.addMembers(groupInfo.getMembers()
1685                                         .get()
1686                                         .stream()
1687                                         .map(this::resolveSignalServiceAddress)
1688                                         .collect(Collectors.toSet()));
1689                             }
1690
1691                             account.getGroupStore().updateGroup(groupV1);
1692                             break;
1693                         }
1694                         case DELIVER:
1695                             if (groupV1 == null && !isSync) {
1696                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1697                             }
1698                             break;
1699                         case QUIT: {
1700                             if (groupV1 != null) {
1701                                 groupV1.removeMember(source);
1702                                 account.getGroupStore().updateGroup(groupV1);
1703                             }
1704                             break;
1705                         }
1706                         case REQUEST_INFO:
1707                             if (groupV1 != null && !isSync) {
1708                                 actions.add(new SendGroupUpdateAction(source, groupV1.getGroupId()));
1709                             }
1710                             break;
1711                     }
1712                 } else {
1713                     // Received a group v1 message for a v2 group
1714                 }
1715             }
1716             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1717                 final SignalServiceGroupV2 groupContext = message.getGroupContext().get().getGroupV2().get();
1718                 final GroupMasterKey groupMasterKey = groupContext.getMasterKey();
1719
1720                 getOrMigrateGroup(groupMasterKey,
1721                         groupContext.getRevision(),
1722                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1723             }
1724         }
1725
1726         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1727         if (conversationPartnerAddress != null && message.isEndSession()) {
1728             handleEndSession(conversationPartnerAddress);
1729         }
1730         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1731             if (message.getGroupContext().isPresent()) {
1732                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1733                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1734                     GroupInfoV1 group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1735                     if (group != null) {
1736                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1737                             group.messageExpirationTime = message.getExpiresInSeconds();
1738                             account.getGroupStore().updateGroup(group);
1739                         }
1740                     }
1741                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1742                     // disappearing message timer already stored in the DecryptedGroup
1743                 }
1744             } else if (conversationPartnerAddress != null) {
1745                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1746                 if (contact == null) {
1747                     contact = new ContactInfo(conversationPartnerAddress);
1748                 }
1749                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1750                     contact.messageExpirationTime = message.getExpiresInSeconds();
1751                     account.getContactStore().updateContact(contact);
1752                 }
1753             }
1754         }
1755         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1756             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1757                 if (attachment.isPointer()) {
1758                     try {
1759                         retrieveAttachment(attachment.asPointer());
1760                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1761                         logger.warn("Failed to retrieve attachment ({}), ignoring: {}",
1762                                 attachment.asPointer().getRemoteId(),
1763                                 e.getMessage());
1764                     }
1765                 }
1766             }
1767         }
1768         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1769             final ProfileKey profileKey;
1770             try {
1771                 profileKey = new ProfileKey(message.getProfileKey().get());
1772             } catch (InvalidInputException e) {
1773                 throw new AssertionError(e);
1774             }
1775             if (source.matches(account.getSelfAddress())) {
1776                 this.account.setProfileKey(profileKey);
1777             }
1778             this.account.getProfileStore().storeProfileKey(source, profileKey);
1779         }
1780         if (message.getPreviews().isPresent()) {
1781             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1782             for (SignalServiceDataMessage.Preview preview : previews) {
1783                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1784                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1785                     try {
1786                         retrieveAttachment(attachment);
1787                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1788                         logger.warn("Failed to retrieve preview image ({}), ignoring: {}",
1789                                 attachment.getRemoteId(),
1790                                 e.getMessage());
1791                     }
1792                 }
1793             }
1794         }
1795         if (message.getQuote().isPresent()) {
1796             final SignalServiceDataMessage.Quote quote = message.getQuote().get();
1797
1798             for (SignalServiceDataMessage.Quote.QuotedAttachment quotedAttachment : quote.getAttachments()) {
1799                 final SignalServiceAttachment attachment = quotedAttachment.getThumbnail();
1800                 if (attachment != null && attachment.isPointer()) {
1801                     try {
1802                         retrieveAttachment(attachment.asPointer());
1803                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1804                         logger.warn("Failed to retrieve quote attachment thumbnail ({}), ignoring: {}",
1805                                 attachment.asPointer().getRemoteId(),
1806                                 e.getMessage());
1807                     }
1808                 }
1809             }
1810         }
1811         if (message.getSticker().isPresent()) {
1812             final SignalServiceDataMessage.Sticker messageSticker = message.getSticker().get();
1813             Sticker sticker = account.getStickerStore().getSticker(messageSticker.getPackId());
1814             if (sticker == null) {
1815                 sticker = new Sticker(messageSticker.getPackId(), messageSticker.getPackKey());
1816                 account.getStickerStore().updateSticker(sticker);
1817             }
1818         }
1819         return actions;
1820     }
1821
1822     private GroupInfoV2 getOrMigrateGroup(
1823             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1824     ) {
1825         final GroupSecretParams groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1826
1827         GroupIdV2 groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1828         GroupInfo groupInfo = account.getGroupStore().getGroup(groupId);
1829         final GroupInfoV2 groupInfoV2;
1830         if (groupInfo instanceof GroupInfoV1) {
1831             // Received a v2 group message for a v1 group, we need to locally migrate the group
1832             account.getGroupStore().deleteGroup(groupInfo.getGroupId());
1833             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1834             logger.info("Locally migrated group {} to group v2, id: {}",
1835                     groupInfo.getGroupId().toBase64(),
1836                     groupInfoV2.getGroupId().toBase64());
1837         } else if (groupInfo instanceof GroupInfoV2) {
1838             groupInfoV2 = (GroupInfoV2) groupInfo;
1839         } else {
1840             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1841         }
1842
1843         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1844             DecryptedGroup group = null;
1845             if (signedGroupChange != null
1846                     && groupInfoV2.getGroup() != null
1847                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1848                 group = groupHelper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(), signedGroupChange, groupMasterKey);
1849             }
1850             if (group == null) {
1851                 group = groupHelper.getDecryptedGroup(groupSecretParams);
1852             }
1853             if (group != null) {
1854                 storeProfileKeysFromMembers(group);
1855                 final String avatar = group.getAvatar();
1856                 if (avatar != null && !avatar.isEmpty()) {
1857                     try {
1858                         retrieveGroupAvatar(groupId, groupSecretParams, avatar);
1859                     } catch (IOException e) {
1860                         logger.warn("Failed to download group avatar, ignoring: {}", e.getMessage());
1861                     }
1862                 }
1863             }
1864             groupInfoV2.setGroup(group);
1865             account.getGroupStore().updateGroup(groupInfoV2);
1866         }
1867
1868         return groupInfoV2;
1869     }
1870
1871     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1872         for (DecryptedMember member : group.getMembersList()) {
1873             final SignalServiceAddress address = resolveSignalServiceAddress(new SignalServiceAddress(UuidUtil.parseOrThrow(
1874                     member.getUuid().toByteArray()), null));
1875             try {
1876                 account.getProfileStore()
1877                         .storeProfileKey(address, new ProfileKey(member.getProfileKey().toByteArray()));
1878             } catch (InvalidInputException ignored) {
1879             }
1880         }
1881     }
1882
1883     private void retryFailedReceivedMessages(
1884             ReceiveMessageHandler handler, boolean ignoreAttachments
1885     ) {
1886         final File cachePath = getMessageCachePath();
1887         if (!cachePath.exists()) {
1888             return;
1889         }
1890         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1891             if (!dir.isDirectory()) {
1892                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1893                 continue;
1894             }
1895
1896             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1897                 if (!fileEntry.isFile()) {
1898                     continue;
1899                 }
1900                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1901             }
1902             // Try to delete directory if empty
1903             dir.delete();
1904         }
1905     }
1906
1907     private void retryFailedReceivedMessage(
1908             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry
1909     ) {
1910         SignalServiceEnvelope envelope;
1911         try {
1912             envelope = MessageCacheUtils.loadEnvelope(fileEntry);
1913             if (envelope == null) {
1914                 return;
1915             }
1916         } catch (IOException e) {
1917             e.printStackTrace();
1918             return;
1919         }
1920         SignalServiceContent content = null;
1921         if (!envelope.isReceipt()) {
1922             try {
1923                 content = decryptMessage(envelope);
1924             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1925                 return;
1926             } catch (Exception er) {
1927                 // All other errors are not recoverable, so delete the cached message
1928                 try {
1929                     Files.delete(fileEntry.toPath());
1930                 } catch (IOException e) {
1931                     logger.warn("Failed to delete cached message file “{}”, ignoring: {}", fileEntry, e.getMessage());
1932                 }
1933                 return;
1934             }
1935             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1936             for (HandleAction action : actions) {
1937                 try {
1938                     action.execute(this);
1939                 } catch (Throwable e) {
1940                     e.printStackTrace();
1941                 }
1942             }
1943         }
1944         account.save();
1945         handler.handleMessage(envelope, content, null);
1946         try {
1947             Files.delete(fileEntry.toPath());
1948         } catch (IOException e) {
1949             logger.warn("Failed to delete cached message file “{}”, ignoring: {}", fileEntry, e.getMessage());
1950         }
1951     }
1952
1953     public void receiveMessages(
1954             long timeout,
1955             TimeUnit unit,
1956             boolean returnOnTimeout,
1957             boolean ignoreAttachments,
1958             ReceiveMessageHandler handler
1959     ) throws IOException {
1960         retryFailedReceivedMessages(handler, ignoreAttachments);
1961
1962         Set<HandleAction> queuedActions = null;
1963
1964         getOrCreateMessagePipe();
1965
1966         boolean hasCaughtUpWithOldMessages = false;
1967
1968         while (true) {
1969             SignalServiceEnvelope envelope;
1970             SignalServiceContent content = null;
1971             Exception exception = null;
1972             final long now = new Date().getTime();
1973             try {
1974                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1975                     // store message on disk, before acknowledging receipt to the server
1976                     try {
1977                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1978                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1979                         MessageCacheUtils.storeEnvelope(envelope1, cacheFile);
1980                     } catch (IOException e) {
1981                         logger.warn("Failed to store encrypted message in disk cache, ignoring: {}", e.getMessage());
1982                     }
1983                 });
1984                 if (result.isPresent()) {
1985                     envelope = result.get();
1986                 } else {
1987                     // Received indicator that server queue is empty
1988                     hasCaughtUpWithOldMessages = true;
1989
1990                     if (queuedActions != null) {
1991                         for (HandleAction action : queuedActions) {
1992                             try {
1993                                 action.execute(this);
1994                             } catch (Throwable e) {
1995                                 e.printStackTrace();
1996                             }
1997                         }
1998                         account.save();
1999                         queuedActions.clear();
2000                         queuedActions = null;
2001                     }
2002
2003                     // Continue to wait another timeout for new messages
2004                     continue;
2005                 }
2006             } catch (TimeoutException e) {
2007                 if (returnOnTimeout) return;
2008                 continue;
2009             } catch (InvalidVersionException e) {
2010                 logger.warn("Error while receiving messages, ignoring: {}", e.getMessage());
2011                 continue;
2012             }
2013
2014             if (envelope.hasSource()) {
2015                 // Store uuid if we don't have it already
2016                 SignalServiceAddress source = envelope.getSourceAddress();
2017                 resolveSignalServiceAddress(source);
2018             }
2019             if (!envelope.isReceipt()) {
2020                 try {
2021                     content = decryptMessage(envelope);
2022                 } catch (Exception e) {
2023                     exception = e;
2024                 }
2025                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
2026                 if (hasCaughtUpWithOldMessages) {
2027                     for (HandleAction action : actions) {
2028                         try {
2029                             action.execute(this);
2030                         } catch (Throwable e) {
2031                             e.printStackTrace();
2032                         }
2033                     }
2034                 } else {
2035                     if (queuedActions == null) {
2036                         queuedActions = new HashSet<>();
2037                     }
2038                     queuedActions.addAll(actions);
2039                 }
2040             }
2041             account.save();
2042             if (!isMessageBlocked(envelope, content)) {
2043                 handler.handleMessage(envelope, content, exception);
2044             }
2045             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
2046                 File cacheFile = null;
2047                 try {
2048                     String source = envelope.getSourceE164().isPresent() ? envelope.getSourceE164().get() : "";
2049                     cacheFile = getMessageCacheFile(source, now, envelope.getTimestamp());
2050                     Files.delete(cacheFile.toPath());
2051                     // Try to delete directory if empty
2052                     getMessageCachePath().delete();
2053                 } catch (IOException e) {
2054                     logger.warn("Failed to delete cached message file “{}”, ignoring: {}", cacheFile, e.getMessage());
2055                 }
2056             }
2057         }
2058     }
2059
2060     private boolean isMessageBlocked(
2061             SignalServiceEnvelope envelope, SignalServiceContent content
2062     ) {
2063         SignalServiceAddress source;
2064         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
2065             source = envelope.getSourceAddress();
2066         } else if (content != null) {
2067             source = content.getSender();
2068         } else {
2069             return false;
2070         }
2071         ContactInfo sourceContact = account.getContactStore().getContact(source);
2072         if (sourceContact != null && sourceContact.blocked) {
2073             return true;
2074         }
2075
2076         if (content != null && content.getDataMessage().isPresent()) {
2077             SignalServiceDataMessage message = content.getDataMessage().get();
2078             if (message.getGroupContext().isPresent()) {
2079                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
2080                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
2081                     if (groupInfo.getType() != SignalServiceGroup.Type.DELIVER) {
2082                         return false;
2083                     }
2084                 }
2085                 GroupId groupId = GroupUtils.getGroupId(message.getGroupContext().get());
2086                 GroupInfo group = account.getGroupStore().getGroup(groupId);
2087                 if (group != null && group.isBlocked()) {
2088                     return true;
2089                 }
2090             }
2091         }
2092         return false;
2093     }
2094
2095     private List<HandleAction> handleMessage(
2096             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
2097     ) {
2098         List<HandleAction> actions = new ArrayList<>();
2099         if (content != null) {
2100             final SignalServiceAddress sender;
2101             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
2102                 sender = envelope.getSourceAddress();
2103             } else {
2104                 sender = content.getSender();
2105             }
2106             // Store uuid if we don't have it already
2107             resolveSignalServiceAddress(sender);
2108
2109             if (content.getDataMessage().isPresent()) {
2110                 SignalServiceDataMessage message = content.getDataMessage().get();
2111
2112                 if (content.isNeedsReceipt()) {
2113                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
2114                 }
2115
2116                 actions.addAll(handleSignalServiceDataMessage(message,
2117                         false,
2118                         sender,
2119                         account.getSelfAddress(),
2120                         ignoreAttachments));
2121             }
2122             if (content.getSyncMessage().isPresent()) {
2123                 account.setMultiDevice(true);
2124                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
2125                 if (syncMessage.getSent().isPresent()) {
2126                     SentTranscriptMessage message = syncMessage.getSent().get();
2127                     final SignalServiceAddress destination = message.getDestination().orNull();
2128                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
2129                             true,
2130                             sender,
2131                             destination,
2132                             ignoreAttachments));
2133                 }
2134                 if (syncMessage.getRequest().isPresent()) {
2135                     RequestMessage rm = syncMessage.getRequest().get();
2136                     if (rm.isContactsRequest()) {
2137                         actions.add(SendSyncContactsAction.create());
2138                     }
2139                     if (rm.isGroupsRequest()) {
2140                         actions.add(SendSyncGroupsAction.create());
2141                     }
2142                     if (rm.isBlockedListRequest()) {
2143                         actions.add(SendSyncBlockedListAction.create());
2144                     }
2145                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
2146                 }
2147                 if (syncMessage.getGroups().isPresent()) {
2148                     File tmpFile = null;
2149                     try {
2150                         tmpFile = IOUtils.createTempFile();
2151                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups()
2152                                 .get()
2153                                 .asPointer(), tmpFile)) {
2154                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
2155                             DeviceGroup g;
2156                             while ((g = s.read()) != null) {
2157                                 GroupInfoV1 syncGroup = account.getGroupStore()
2158                                         .getOrCreateGroupV1(GroupId.v1(g.getId()));
2159                                 if (syncGroup != null) {
2160                                     if (g.getName().isPresent()) {
2161                                         syncGroup.name = g.getName().get();
2162                                     }
2163                                     syncGroup.addMembers(g.getMembers()
2164                                             .stream()
2165                                             .map(this::resolveSignalServiceAddress)
2166                                             .collect(Collectors.toSet()));
2167                                     if (!g.isActive()) {
2168                                         syncGroup.removeMember(account.getSelfAddress());
2169                                     } else {
2170                                         // Add ourself to the member set as it's marked as active
2171                                         syncGroup.addMembers(List.of(account.getSelfAddress()));
2172                                     }
2173                                     syncGroup.blocked = g.isBlocked();
2174                                     if (g.getColor().isPresent()) {
2175                                         syncGroup.color = g.getColor().get();
2176                                     }
2177
2178                                     if (g.getAvatar().isPresent()) {
2179                                         retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.getGroupId());
2180                                     }
2181                                     syncGroup.inboxPosition = g.getInboxPosition().orNull();
2182                                     syncGroup.archived = g.isArchived();
2183                                     account.getGroupStore().updateGroup(syncGroup);
2184                                 }
2185                             }
2186                         }
2187                     } catch (Exception e) {
2188                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
2189                                 tmpFile,
2190                                 e.getMessage());
2191                         e.printStackTrace();
2192                     } finally {
2193                         if (tmpFile != null) {
2194                             try {
2195                                 Files.delete(tmpFile.toPath());
2196                             } catch (IOException e) {
2197                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
2198                                         tmpFile,
2199                                         e.getMessage());
2200                             }
2201                         }
2202                     }
2203                 }
2204                 if (syncMessage.getBlockedList().isPresent()) {
2205                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
2206                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
2207                         setContactBlocked(resolveSignalServiceAddress(address), true);
2208                     }
2209                     for (GroupId groupId : blockedListMessage.getGroupIds()
2210                             .stream()
2211                             .map(GroupId::unknownVersion)
2212                             .collect(Collectors.toSet())) {
2213                         try {
2214                             setGroupBlocked(groupId, true);
2215                         } catch (GroupNotFoundException e) {
2216                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
2217                                     groupId.toBase64());
2218                         }
2219                     }
2220                 }
2221                 if (syncMessage.getContacts().isPresent()) {
2222                     File tmpFile = null;
2223                     try {
2224                         tmpFile = IOUtils.createTempFile();
2225                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
2226                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
2227                                 .asPointer(), tmpFile)) {
2228                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
2229                             if (contactsMessage.isComplete()) {
2230                                 account.getContactStore().clear();
2231                             }
2232                             DeviceContact c;
2233                             while ((c = s.read()) != null) {
2234                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
2235                                     account.setProfileKey(c.getProfileKey().get());
2236                                 }
2237                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
2238                                 ContactInfo contact = account.getContactStore().getContact(address);
2239                                 if (contact == null) {
2240                                     contact = new ContactInfo(address);
2241                                 }
2242                                 if (c.getName().isPresent()) {
2243                                     contact.name = c.getName().get();
2244                                 }
2245                                 if (c.getColor().isPresent()) {
2246                                     contact.color = c.getColor().get();
2247                                 }
2248                                 if (c.getProfileKey().isPresent()) {
2249                                     account.getProfileStore().storeProfileKey(address, c.getProfileKey().get());
2250                                 }
2251                                 if (c.getVerified().isPresent()) {
2252                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
2253                                     account.getSignalProtocolStore()
2254                                             .setIdentityTrustLevel(verifiedMessage.getDestination(),
2255                                                     verifiedMessage.getIdentityKey(),
2256                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2257                                 }
2258                                 if (c.getExpirationTimer().isPresent()) {
2259                                     contact.messageExpirationTime = c.getExpirationTimer().get();
2260                                 }
2261                                 contact.blocked = c.isBlocked();
2262                                 contact.inboxPosition = c.getInboxPosition().orNull();
2263                                 contact.archived = c.isArchived();
2264                                 account.getContactStore().updateContact(contact);
2265
2266                                 if (c.getAvatar().isPresent()) {
2267                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
2268                                 }
2269                             }
2270                         }
2271                     } catch (Exception e) {
2272                         e.printStackTrace();
2273                     } finally {
2274                         if (tmpFile != null) {
2275                             try {
2276                                 Files.delete(tmpFile.toPath());
2277                             } catch (IOException e) {
2278                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2279                                         tmpFile,
2280                                         e.getMessage());
2281                             }
2282                         }
2283                     }
2284                 }
2285                 if (syncMessage.getVerified().isPresent()) {
2286                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
2287                     account.getSignalProtocolStore()
2288                             .setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()),
2289                                     verifiedMessage.getIdentityKey(),
2290                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2291                 }
2292                 if (syncMessage.getStickerPackOperations().isPresent()) {
2293                     final List<StickerPackOperationMessage> stickerPackOperationMessages = syncMessage.getStickerPackOperations()
2294                             .get();
2295                     for (StickerPackOperationMessage m : stickerPackOperationMessages) {
2296                         if (!m.getPackId().isPresent()) {
2297                             continue;
2298                         }
2299                         Sticker sticker = account.getStickerStore().getSticker(m.getPackId().get());
2300                         if (sticker == null) {
2301                             if (!m.getPackKey().isPresent()) {
2302                                 continue;
2303                             }
2304                             sticker = new Sticker(m.getPackId().get(), m.getPackKey().get());
2305                         }
2306                         sticker.setInstalled(!m.getType().isPresent()
2307                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2308                         account.getStickerStore().updateSticker(sticker);
2309                     }
2310                 }
2311                 if (syncMessage.getConfiguration().isPresent()) {
2312                     // TODO
2313                 }
2314             }
2315         }
2316         return actions;
2317     }
2318
2319     private File getContactAvatarFile(String number) {
2320         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
2321     }
2322
2323     private File retrieveContactAvatarAttachment(
2324             SignalServiceAttachment attachment, String number
2325     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2326         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2327         if (attachment.isPointer()) {
2328             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2329             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
2330         } else {
2331             SignalServiceAttachmentStream stream = attachment.asStream();
2332             return AttachmentUtils.retrieveAttachment(stream, getContactAvatarFile(number));
2333         }
2334     }
2335
2336     private File getGroupAvatarFile(GroupId groupId) {
2337         return new File(pathConfig.getAvatarsPath(), "group-" + groupId.toBase64().replace("/", "_"));
2338     }
2339
2340     private File retrieveGroupAvatarAttachment(
2341             SignalServiceAttachment attachment, GroupId groupId
2342     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2343         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2344         if (attachment.isPointer()) {
2345             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2346             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
2347         } else {
2348             SignalServiceAttachmentStream stream = attachment.asStream();
2349             return AttachmentUtils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
2350         }
2351     }
2352
2353     private File retrieveGroupAvatar(
2354             GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey
2355     ) throws IOException {
2356         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2357         SignalServiceMessageReceiver receiver = getOrCreateMessageReceiver();
2358         File outputFile = getGroupAvatarFile(groupId);
2359         GroupsV2Operations.GroupOperations groupOperations = groupsV2Operations.forGroup(groupSecretParams);
2360
2361         File tmpFile = IOUtils.createTempFile();
2362         tmpFile.deleteOnExit();
2363         try (InputStream input = receiver.retrieveGroupsV2ProfileAvatar(cdnKey,
2364                 tmpFile,
2365                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2366             byte[] encryptedData = IOUtils.readFully(input);
2367
2368             byte[] decryptedData = groupOperations.decryptAvatar(encryptedData);
2369             try (OutputStream output = new FileOutputStream(outputFile)) {
2370                 output.write(decryptedData);
2371             }
2372         } finally {
2373             try {
2374                 Files.delete(tmpFile.toPath());
2375             } catch (IOException e) {
2376                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2377                         tmpFile,
2378                         e.getMessage());
2379             }
2380         }
2381         return outputFile;
2382     }
2383
2384     private File getProfileAvatarFile(SignalServiceAddress address) {
2385         return new File(pathConfig.getAvatarsPath(), "profile-" + address.getLegacyIdentifier());
2386     }
2387
2388     private File retrieveProfileAvatar(
2389             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2390     ) throws IOException {
2391         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2392         SignalServiceMessageReceiver receiver = getOrCreateMessageReceiver();
2393         File outputFile = getProfileAvatarFile(address);
2394
2395         File tmpFile = IOUtils.createTempFile();
2396         try (InputStream input = receiver.retrieveProfileAvatar(avatarPath,
2397                 tmpFile,
2398                 profileKey,
2399                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2400             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2401             IOUtils.copyStreamToFile(input, outputFile, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2402         } finally {
2403             try {
2404                 Files.delete(tmpFile.toPath());
2405             } catch (IOException e) {
2406                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2407                         tmpFile,
2408                         e.getMessage());
2409             }
2410         }
2411         return outputFile;
2412     }
2413
2414     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2415         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
2416     }
2417
2418     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
2419         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
2420         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
2421     }
2422
2423     private File retrieveAttachment(
2424             SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview
2425     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2426         if (storePreview && pointer.getPreview().isPresent()) {
2427             File previewFile = new File(outputFile + ".preview");
2428             try (OutputStream output = new FileOutputStream(previewFile)) {
2429                 byte[] preview = pointer.getPreview().get();
2430                 output.write(preview, 0, preview.length);
2431             } catch (FileNotFoundException e) {
2432                 e.printStackTrace();
2433                 return null;
2434             }
2435         }
2436
2437         final SignalServiceMessageReceiver messageReceiver = getOrCreateMessageReceiver();
2438
2439         File tmpFile = IOUtils.createTempFile();
2440         try (InputStream input = messageReceiver.retrieveAttachment(pointer,
2441                 tmpFile,
2442                 ServiceConfig.MAX_ATTACHMENT_SIZE)) {
2443             IOUtils.copyStreamToFile(input, outputFile);
2444         } finally {
2445             try {
2446                 Files.delete(tmpFile.toPath());
2447             } catch (IOException e) {
2448                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2449                         tmpFile,
2450                         e.getMessage());
2451             }
2452         }
2453         return outputFile;
2454     }
2455
2456     private InputStream retrieveAttachmentAsStream(
2457             SignalServiceAttachmentPointer pointer, File tmpFile
2458     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2459         final SignalServiceMessageReceiver messageReceiver = getOrCreateMessageReceiver();
2460         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2461     }
2462
2463     void sendGroups() throws IOException, UntrustedIdentityException {
2464         File groupsFile = IOUtils.createTempFile();
2465
2466         try {
2467             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2468                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
2469                 for (GroupInfo record : account.getGroupStore().getGroups()) {
2470                     if (record instanceof GroupInfoV1) {
2471                         GroupInfoV1 groupInfo = (GroupInfoV1) record;
2472                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2473                                 Optional.fromNullable(groupInfo.name),
2474                                 new ArrayList<>(groupInfo.getMembers()),
2475                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2476                                 groupInfo.isMember(account.getSelfAddress()),
2477                                 Optional.of(groupInfo.messageExpirationTime),
2478                                 Optional.fromNullable(groupInfo.color),
2479                                 groupInfo.blocked,
2480                                 Optional.fromNullable(groupInfo.inboxPosition),
2481                                 groupInfo.archived));
2482                     }
2483                 }
2484             }
2485
2486             if (groupsFile.exists() && groupsFile.length() > 0) {
2487                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
2488                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2489                             .withStream(groupsFileStream)
2490                             .withContentType("application/octet-stream")
2491                             .withLength(groupsFile.length())
2492                             .build();
2493
2494                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2495                 }
2496             }
2497         } finally {
2498             try {
2499                 Files.delete(groupsFile.toPath());
2500             } catch (IOException e) {
2501                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2502             }
2503         }
2504     }
2505
2506     public void sendContacts() throws IOException, UntrustedIdentityException {
2507         File contactsFile = IOUtils.createTempFile();
2508
2509         try {
2510             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2511                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
2512                 for (ContactInfo record : account.getContactStore().getContacts()) {
2513                     VerifiedMessage verifiedMessage = null;
2514                     IdentityInfo currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
2515                     if (currentIdentity != null) {
2516                         verifiedMessage = new VerifiedMessage(record.getAddress(),
2517                                 currentIdentity.getIdentityKey(),
2518                                 currentIdentity.getTrustLevel().toVerifiedState(),
2519                                 currentIdentity.getDateAdded().getTime());
2520                     }
2521
2522                     ProfileKey profileKey = account.getProfileStore().getProfileKey(record.getAddress());
2523                     out.write(new DeviceContact(record.getAddress(),
2524                             Optional.fromNullable(record.name),
2525                             createContactAvatarAttachment(record.number),
2526                             Optional.fromNullable(record.color),
2527                             Optional.fromNullable(verifiedMessage),
2528                             Optional.fromNullable(profileKey),
2529                             record.blocked,
2530                             Optional.of(record.messageExpirationTime),
2531                             Optional.fromNullable(record.inboxPosition),
2532                             record.archived));
2533                 }
2534
2535                 if (account.getProfileKey() != null) {
2536                     // Send our own profile key as well
2537                     out.write(new DeviceContact(account.getSelfAddress(),
2538                             Optional.absent(),
2539                             Optional.absent(),
2540                             Optional.absent(),
2541                             Optional.absent(),
2542                             Optional.of(account.getProfileKey()),
2543                             false,
2544                             Optional.absent(),
2545                             Optional.absent(),
2546                             false));
2547                 }
2548             }
2549
2550             if (contactsFile.exists() && contactsFile.length() > 0) {
2551                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
2552                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2553                             .withStream(contactsFileStream)
2554                             .withContentType("application/octet-stream")
2555                             .withLength(contactsFile.length())
2556                             .build();
2557
2558                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2559                 }
2560             }
2561         } finally {
2562             try {
2563                 Files.delete(contactsFile.toPath());
2564             } catch (IOException e) {
2565                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2566             }
2567         }
2568     }
2569
2570     void sendBlockedList() throws IOException, UntrustedIdentityException {
2571         List<SignalServiceAddress> addresses = new ArrayList<>();
2572         for (ContactInfo record : account.getContactStore().getContacts()) {
2573             if (record.blocked) {
2574                 addresses.add(record.getAddress());
2575             }
2576         }
2577         List<byte[]> groupIds = new ArrayList<>();
2578         for (GroupInfo record : account.getGroupStore().getGroups()) {
2579             if (record.isBlocked()) {
2580                 groupIds.add(record.getGroupId().serialize());
2581             }
2582         }
2583         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2584     }
2585
2586     private void sendVerifiedMessage(
2587             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2588     ) throws IOException, UntrustedIdentityException {
2589         VerifiedMessage verifiedMessage = new VerifiedMessage(destination,
2590                 identityKey,
2591                 trustLevel.toVerifiedState(),
2592                 System.currentTimeMillis());
2593         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2594     }
2595
2596     public List<ContactInfo> getContacts() {
2597         return account.getContactStore().getContacts();
2598     }
2599
2600     public ContactInfo getContact(String number) {
2601         return account.getContactStore().getContact(Utils.getSignalServiceAddressFromIdentifier(number));
2602     }
2603
2604     public GroupInfo getGroup(GroupId groupId) {
2605         return account.getGroupStore().getGroup(groupId);
2606     }
2607
2608     public List<IdentityInfo> getIdentities() {
2609         return account.getSignalProtocolStore().getIdentities();
2610     }
2611
2612     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2613         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
2614     }
2615
2616     /**
2617      * Trust this the identity with this fingerprint
2618      *
2619      * @param name        username of the identity
2620      * @param fingerprint Fingerprint
2621      */
2622     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2623         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2624         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2625         if (ids == null) {
2626             return false;
2627         }
2628         for (IdentityInfo id : ids) {
2629             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
2630                 continue;
2631             }
2632
2633             account.getSignalProtocolStore()
2634                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2635             try {
2636                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2637             } catch (IOException | UntrustedIdentityException e) {
2638                 e.printStackTrace();
2639             }
2640             account.save();
2641             return true;
2642         }
2643         return false;
2644     }
2645
2646     /**
2647      * Trust this the identity with this safety number
2648      *
2649      * @param name         username of the identity
2650      * @param safetyNumber Safety number
2651      */
2652     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2653         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2654         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2655         if (ids == null) {
2656             return false;
2657         }
2658         for (IdentityInfo id : ids) {
2659             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2660                 continue;
2661             }
2662
2663             account.getSignalProtocolStore()
2664                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2665             try {
2666                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2667             } catch (IOException | UntrustedIdentityException e) {
2668                 e.printStackTrace();
2669             }
2670             account.save();
2671             return true;
2672         }
2673         return false;
2674     }
2675
2676     /**
2677      * Trust all keys of this identity without verification
2678      *
2679      * @param name username of the identity
2680      */
2681     public boolean trustIdentityAllKeys(String name) {
2682         SignalServiceAddress address = resolveSignalServiceAddress(name);
2683         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2684         if (ids == null) {
2685             return false;
2686         }
2687         for (IdentityInfo id : ids) {
2688             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2689                 account.getSignalProtocolStore()
2690                         .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2691                 try {
2692                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2693                 } catch (IOException | UntrustedIdentityException e) {
2694                     e.printStackTrace();
2695                 }
2696             }
2697         }
2698         account.save();
2699         return true;
2700     }
2701
2702     public String computeSafetyNumber(
2703             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2704     ) {
2705         return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
2706                 account.getSelfAddress(),
2707                 getIdentityKeyPair().getPublicKey(),
2708                 theirAddress,
2709                 theirIdentityKey);
2710     }
2711
2712     void saveAccount() {
2713         account.save();
2714     }
2715
2716     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2717         String canonicalizedNumber = UuidUtil.isUuid(identifier)
2718                 ? identifier
2719                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2720         return resolveSignalServiceAddress(canonicalizedNumber);
2721     }
2722
2723     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2724         SignalServiceAddress address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2725
2726         return resolveSignalServiceAddress(address);
2727     }
2728
2729     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2730         if (address.matches(account.getSelfAddress())) {
2731             return account.getSelfAddress();
2732         }
2733
2734         return account.getRecipientStore().resolveServiceAddress(address);
2735     }
2736
2737     @Override
2738     public void close() throws IOException {
2739         if (messagePipe != null) {
2740             messagePipe.shutdown();
2741             messagePipe = null;
2742         }
2743
2744         if (unidentifiedMessagePipe != null) {
2745             unidentifiedMessagePipe.shutdown();
2746             unidentifiedMessagePipe = null;
2747         }
2748
2749         account.close();
2750     }
2751
2752     public interface ReceiveMessageHandler {
2753
2754         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2755     }
2756 }