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

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