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