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