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.groups.GroupId;
  20 import org.asamk.signal.manager.groups.GroupIdV1;
  21 import org.asamk.signal.manager.groups.GroupIdV2;
  22 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
  23 import org.asamk.signal.manager.groups.GroupNotFoundException;
  24 import org.asamk.signal.manager.groups.GroupUtils;
  25 import org.asamk.signal.manager.groups.NotAGroupMemberException;
  26 import org.asamk.signal.manager.helper.GroupHelper;
  27 import org.asamk.signal.manager.helper.PinHelper;
  28 import org.asamk.signal.manager.helper.ProfileHelper;
  29 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  30 import org.asamk.signal.manager.storage.SignalAccount;
  31 import org.asamk.signal.manager.storage.contacts.ContactInfo;
  32 import org.asamk.signal.manager.storage.groups.GroupInfo;
  33 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  34 import org.asamk.signal.manager.storage.groups.GroupInfoV2;
  35 import org.asamk.signal.manager.storage.messageCache.CachedMessage;
  36 import org.asamk.signal.manager.storage.profiles.SignalProfile;
  37 import org.asamk.signal.manager.storage.profiles.SignalProfileEntry;
  38 import org.asamk.signal.manager.storage.protocol.IdentityInfo;
  39 import org.asamk.signal.manager.storage.stickers.Sticker;
  40 import org.asamk.signal.manager.util.AttachmentUtils;
  41 import org.asamk.signal.manager.util.IOUtils;
  42 import org.asamk.signal.manager.util.KeyUtils;
  43 import org.asamk.signal.manager.util.ProfileUtils;
  44 import org.asamk.signal.manager.util.StickerUtils;
  45 import org.asamk.signal.manager.util.Utils;
  46 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  47 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  48 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  49 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  50 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  51 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  52 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  53 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  54 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  55 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  56 import org.signal.libsignal.metadata.SelfSendException;
  57 import org.signal.libsignal.metadata.certificate.CertificateValidator;
  58 import org.signal.storageservice.protos.groups.GroupChange;
  59 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
  60 import org.signal.storageservice.protos.groups.local.DecryptedGroupJoinInfo;
  61 import org.signal.storageservice.protos.groups.local.DecryptedMember;
  62 import org.signal.zkgroup.InvalidInputException;
  63 import org.signal.zkgroup.VerificationFailedException;
  64 import org.signal.zkgroup.auth.AuthCredentialResponse;
  65 import org.signal.zkgroup.groups.GroupMasterKey;
  66 import org.signal.zkgroup.groups.GroupSecretParams;
  67 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  68 import org.signal.zkgroup.profiles.ProfileKey;
  69 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  70 import org.slf4j.Logger;
  71 import org.slf4j.LoggerFactory;
  72 import org.whispersystems.libsignal.IdentityKey;
  73 import org.whispersystems.libsignal.IdentityKeyPair;
  74 import org.whispersystems.libsignal.InvalidKeyException;
  75 import org.whispersystems.libsignal.InvalidMessageException;
  76 import org.whispersystems.libsignal.InvalidVersionException;
  77 import org.whispersystems.libsignal.ecc.ECPublicKey;
  78 import org.whispersystems.libsignal.state.PreKeyRecord;
  79 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  80 import org.whispersystems.libsignal.util.Pair;
  81 import org.whispersystems.libsignal.util.guava.Optional;
  82 import org.whispersystems.signalservice.api.KeyBackupService;
  83 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  84 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  85 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  86 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  87 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  88 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  89 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  90 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  91 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
  92 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
  93 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  94 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  95 import org.whispersystems.signalservice.api.kbs.MasterKey;
  96 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  97 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  98 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  99 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
 100 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
 101 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
 102 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
 103 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
 104 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
 105 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
 106 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
 107 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
 108 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
 109 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 110 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 111 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 112 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 113 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 114 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 115 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 116 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 117 import org.whispersystems.signalservice.api.messages.multidevice.KeysMessage;
 118 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 119 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 120 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 121 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 122 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 123 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 124 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 125 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 126 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 127 import org.whispersystems.signalservice.api.storage.StorageKey;
 128 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 129 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
 130 import org.whispersystems.signalservice.api.util.SleepTimer;
 131 import org.whispersystems.signalservice.api.util.StreamDetails;
 132 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 133 import org.whispersystems.signalservice.api.util.UuidUtil;
 134 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 135 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 136 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 137 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 138 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 139 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 140 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 141 import org.whispersystems.signalservice.internal.util.Hex;
 142 import org.whispersystems.signalservice.internal.util.Util;
 143
 144 import java.io.Closeable;
 145 import java.io.File;
 146 import java.io.FileInputStream;
 147 import java.io.FileOutputStream;
 148 import java.io.IOException;
 149 import java.io.InputStream;
 150 import java.io.OutputStream;
 151 import java.net.URI;
 152 import java.net.URISyntaxException;
 153 import java.net.URLEncoder;
 154 import java.nio.charset.StandardCharsets;
 155 import java.nio.file.Files;
 156 import java.security.SignatureException;
 157 import java.util.ArrayList;
 158 import java.util.Arrays;
 159 import java.util.Collection;
 160 import java.util.Date;
 161 import java.util.HashMap;
 162 import java.util.HashSet;
 163 import java.util.List;
 164 import java.util.Map;
 165 import java.util.Set;
 166 import java.util.UUID;
 167 import java.util.concurrent.ExecutorService;
 168 import java.util.concurrent.TimeUnit;
 169 import java.util.concurrent.TimeoutException;
 170 import java.util.stream.Collectors;
 171
 172 import static org.asamk.signal.manager.ServiceConfig.CDS_MRENCLAVE;
 173 import static org.asamk.signal.manager.ServiceConfig.capabilities;
 174 import static org.asamk.signal.manager.ServiceConfig.getIasKeyStore;
 175
 176 public class Manager implements Closeable {
 177
 178     private final static Logger logger = LoggerFactory.getLogger(Manager.class);
 179
 180     private final CertificateValidator certificateValidator = new CertificateValidator(ServiceConfig.getUnidentifiedSenderTrustRoot());
 181
 182     private final SignalServiceConfiguration serviceConfiguration;
 183     private final String userAgent;
 184
 185     private SignalAccount account;
 186     private final SignalServiceAccountManager accountManager;
 187     private final GroupsV2Api groupsV2Api;
 188     private final GroupsV2Operations groupsV2Operations;
 189     private final SignalServiceMessageReceiver messageReceiver;
 190     private final ClientZkProfileOperations clientZkProfileOperations;
 191
 192     private SignalServiceMessagePipe messagePipe = null;
 193     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 194
 195     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 196     private final ProfileHelper profileHelper;
 197     private final GroupHelper groupHelper;
 198     private final PinHelper pinHelper;
 199     private final AvatarStore avatarStore;
 200     private final AttachmentStore attachmentStore;
 201
 202     Manager(
 203             SignalAccount account,
 204             PathConfig pathConfig,
 205             SignalServiceConfiguration serviceConfiguration,
 206             String userAgent
 207     ) {
 208         this.account = account;
 209         this.serviceConfiguration = serviceConfiguration;
 210         this.userAgent = userAgent;
 211         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 212                 serviceConfiguration)) : null;
 213         final SleepTimer timer = new UptimeSleepTimer();
 214         this.accountManager = new SignalServiceAccountManager(serviceConfiguration,
 215                 new DynamicCredentialsProvider(account.getUuid(),
 216                         account.getUsername(),
 217                         account.getPassword(),
 218                         account.getSignalingKey(),
 219                         account.getDeviceId()),
 220                 userAgent,
 221                 groupsV2Operations,
 222                 ServiceConfig.AUTOMATIC_NETWORK_RETRY,
 223                 timer);
 224         this.groupsV2Api = accountManager.getGroupsV2Api();
 225         final KeyBackupService keyBackupService = ServiceConfig.createKeyBackupService(accountManager);
 226         this.pinHelper = new PinHelper(keyBackupService);
 227         this.clientZkProfileOperations = capabilities.isGv2() ? ClientZkOperations.create(serviceConfiguration)
 228                 .getProfileOperations() : null;
 229         this.messageReceiver = new SignalServiceMessageReceiver(serviceConfiguration,
 230                 account.getUuid(),
 231                 account.getUsername(),
 232                 account.getPassword(),
 233                 account.getDeviceId(),
 234                 account.getSignalingKey(),
 235                 userAgent,
 236                 null,
 237                 timer,
 238                 clientZkProfileOperations,
 239                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 240
 241         this.account.setResolver(this::resolveSignalServiceAddress);
 242
 243         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 244                 account.getProfileStore()::getProfileKey,
 245                 this::getRecipientProfile,
 246                 this::getSenderCertificate);
 247         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 248                 unidentifiedAccessHelper::getAccessFor,
 249                 unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
 250                 () -> messageReceiver);
 251         this.groupHelper = new GroupHelper(this::getRecipientProfileKeyCredential,
 252                 this::getRecipientProfile,
 253                 account::getSelfAddress,
 254                 groupsV2Operations,
 255                 groupsV2Api,
 256                 this::getGroupAuthForToday);
 257         this.avatarStore = new AvatarStore(pathConfig.getAvatarsPath());
 258         this.attachmentStore = new AttachmentStore(pathConfig.getAttachmentsPath());
 259     }
 260
 261     public String getUsername() {
 262         return account.getUsername();
 263     }
 264
 265     public SignalServiceAddress getSelfAddress() {
 266         return account.getSelfAddress();
 267     }
 268
 269     private IdentityKeyPair getIdentityKeyPair() {
 270         return account.getSignalProtocolStore().getIdentityKeyPair();
 271     }
 272
 273     public int getDeviceId() {
 274         return account.getDeviceId();
 275     }
 276
 277     public static Manager init(
 278             String username, File settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent
 279     ) throws IOException, NotRegisteredException {
 280         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 281
 282         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 283             throw new NotRegisteredException();
 284         }
 285
 286         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 287
 288         if (!account.isRegistered()) {
 289             throw new NotRegisteredException();
 290         }
 291
 292         return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 293     }
 294
 295     public static List<String> getAllLocalUsernames(File settingsPath) {
 296         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 297         final File dataPath = pathConfig.getDataPath();
 298         final File[] files = dataPath.listFiles();
 299
 300         if (files == null) {
 301             return List.of();
 302         }
 303
 304         return Arrays.stream(files)
 305                 .filter(File::isFile)
 306                 .map(File::getName)
 307                 .filter(file -> PhoneNumberFormatter.isValidNumber(file, null))
 308                 .collect(Collectors.toList());
 309     }
 310
 311     public void checkAccountState() throws IOException {
 312         if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 313             refreshPreKeys();
 314             account.save();
 315         }
 316         if (account.getUuid() == null) {
 317             account.setUuid(accountManager.getOwnUuid());
 318             account.save();
 319         }
 320         updateAccountAttributes();
 321     }
 322
 323     /**
 324      * This is used for checking a set of phone numbers for registration on Signal
 325      *
 326      * @param numbers The set of phone number in question
 327      * @return A map of numbers to booleans. True if registered, false otherwise. Should never be null
 328      * @throws IOException if its unable to get the contacts to check if they're registered
 329      */
 330     public Map<String, Boolean> areUsersRegistered(Set<String> numbers) throws IOException {
 331         // Note "contactDetails" has no optionals. It only gives us info on users who are registered
 332         Map<String, UUID> contactDetails = getRegisteredUsers(numbers);
 333
 334         Set<String> registeredUsers = contactDetails.keySet();
 335
 336         return numbers.stream().collect(Collectors.toMap(x -> x, registeredUsers::contains));
 337     }
 338
 339     public void updateAccountAttributes() throws IOException {
 340         accountManager.setAccountAttributes(account.getSignalingKey(),
 341                 account.getSignalProtocolStore().getLocalRegistrationId(),
 342                 true,
 343                 // set legacy pin only if no KBS master key is set
 344                 account.getPinMasterKey() == null ? account.getRegistrationLockPin() : null,
 345                 account.getPinMasterKey() == null ? null : account.getPinMasterKey().deriveRegistrationLock(),
 346                 account.getSelfUnidentifiedAccessKey(),
 347                 account.isUnrestrictedUnidentifiedAccess(),
 348                 capabilities,
 349                 account.isDiscoverableByPhoneNumber());
 350     }
 351
 352     /**
 353      * @param avatar if avatar is null the image from the local avatar store is used (if present),
 354      *               if it's Optional.absent(), the avatar will be removed
 355      */
 356     public void setProfile(String name, Optional<File> avatar) throws IOException {
 357         // TODO
 358         String about = null;
 359         String aboutEmoji = null;
 360
 361         try (final StreamDetails streamDetails = avatar == null
 362                 ? avatarStore.retrieveProfileAvatar(getSelfAddress())
 363                 : avatar.isPresent() ? Utils.createStreamDetailsFromFile(avatar.get()) : null) {
 364             accountManager.setVersionedProfile(account.getUuid(),
 365                     account.getProfileKey(),
 366                     name,
 367                     about,
 368                     aboutEmoji,
 369                     streamDetails);
 370         }
 371
 372         if (avatar != null) {
 373             if (avatar.isPresent()) {
 374                 avatarStore.storeProfileAvatar(getSelfAddress(),
 375                         outputStream -> IOUtils.copyFileToStream(avatar.get(), outputStream));
 376             } else {
 377                 avatarStore.deleteProfileAvatar(getSelfAddress());
 378             }
 379         }
 380
 381         try {
 382             sendSyncMessage(SignalServiceSyncMessage.forFetchLatest(SignalServiceSyncMessage.FetchType.LOCAL_PROFILE));
 383         } catch (UntrustedIdentityException ignored) {
 384         }
 385     }
 386
 387     public void unregister() throws IOException {
 388         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 389         // If this is the master device, other users can't send messages to this number anymore.
 390         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 391         accountManager.setGcmId(Optional.absent());
 392         accountManager.deleteAccount();
 393
 394         account.setRegistered(false);
 395         account.save();
 396     }
 397
 398     public List<DeviceInfo> getLinkedDevices() throws IOException {
 399         List<DeviceInfo> devices = accountManager.getDevices();
 400         account.setMultiDevice(devices.size() > 1);
 401         account.save();
 402         return devices;
 403     }
 404
 405     public void removeLinkedDevices(int deviceId) throws IOException {
 406         accountManager.removeDevice(deviceId);
 407         List<DeviceInfo> devices = accountManager.getDevices();
 408         account.setMultiDevice(devices.size() > 1);
 409         account.save();
 410     }
 411
 412     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 413         DeviceLinkInfo info = DeviceLinkInfo.parseDeviceLinkUri(linkUri);
 414
 415         addDevice(info.deviceIdentifier, info.deviceKey);
 416     }
 417
 418     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 419         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 420         String verificationCode = accountManager.getNewDeviceVerificationCode();
 421
 422         accountManager.addDevice(deviceIdentifier,
 423                 deviceKey,
 424                 identityKeyPair,
 425                 Optional.of(account.getProfileKey().serialize()),
 426                 verificationCode);
 427         account.setMultiDevice(true);
 428         account.save();
 429     }
 430
 431     public void setRegistrationLockPin(Optional<String> pin) throws IOException, UnauthenticatedResponseException {
 432         if (!account.isMasterDevice()) {
 433             throw new RuntimeException("Only master device can set a PIN");
 434         }
 435         if (pin.isPresent()) {
 436             final MasterKey masterKey = account.getPinMasterKey() != null
 437                     ? account.getPinMasterKey()
 438                     : KeyUtils.createMasterKey();
 439
 440             pinHelper.setRegistrationLockPin(pin.get(), masterKey);
 441
 442             account.setRegistrationLockPin(pin.get());
 443             account.setPinMasterKey(masterKey);
 444         } else {
 445             // Remove legacy registration lock
 446             accountManager.removeRegistrationLockV1();
 447
 448             // Remove KBS Pin
 449             pinHelper.removeRegistrationLockPin();
 450
 451             account.setRegistrationLockPin(null);
 452             account.setPinMasterKey(null);
 453         }
 454         account.save();
 455     }
 456
 457     void refreshPreKeys() throws IOException {
 458         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 459         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 460         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 461
 462         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 463     }
 464
 465     private List<PreKeyRecord> generatePreKeys() {
 466         final int offset = account.getPreKeyIdOffset();
 467
 468         List<PreKeyRecord> records = KeyUtils.generatePreKeyRecords(offset, ServiceConfig.PREKEY_BATCH_SIZE);
 469         account.addPreKeys(records);
 470         account.save();
 471
 472         return records;
 473     }
 474
 475     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 476         final int signedPreKeyId = account.getNextSignedPreKeyId();
 477
 478         SignedPreKeyRecord record = KeyUtils.generateSignedPreKeyRecord(identityKeyPair, signedPreKeyId);
 479         account.addSignedPreKey(record);
 480         account.save();
 481
 482         return record;
 483     }
 484
 485     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 486         if (messagePipe == null) {
 487             messagePipe = messageReceiver.createMessagePipe();
 488         }
 489         return messagePipe;
 490     }
 491
 492     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 493         if (unidentifiedMessagePipe == null) {
 494             unidentifiedMessagePipe = messageReceiver.createUnidentifiedMessagePipe();
 495         }
 496         return unidentifiedMessagePipe;
 497     }
 498
 499     private SignalServiceMessageSender createMessageSender() {
 500         final ExecutorService executor = null;
 501         return new SignalServiceMessageSender(serviceConfiguration,
 502                 account.getUuid(),
 503                 account.getUsername(),
 504                 account.getPassword(),
 505                 account.getDeviceId(),
 506                 account.getSignalProtocolStore(),
 507                 userAgent,
 508                 account.isMultiDevice(),
 509                 Optional.fromNullable(messagePipe),
 510                 Optional.fromNullable(unidentifiedMessagePipe),
 511                 Optional.absent(),
 512                 clientZkProfileOperations,
 513                 executor,
 514                 ServiceConfig.MAX_ENVELOPE_SIZE,
 515                 ServiceConfig.AUTOMATIC_NETWORK_RETRY);
 516     }
 517
 518     private SignalProfile getRecipientProfile(
 519             SignalServiceAddress address
 520     ) {
 521         return getRecipientProfile(address, false);
 522     }
 523
 524     private SignalProfile getRecipientProfile(
 525             SignalServiceAddress address, boolean force
 526     ) {
 527         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 528         if (profileEntry == null) {
 529             return null;
 530         }
 531         long now = new Date().getTime();
 532         // Profiles are cached for 24h before retrieving them again
 533         if (!profileEntry.isRequestPending() && (
 534                 force
 535                         || profileEntry.getProfile() == null
 536                         || now - profileEntry.getLastUpdateTimestamp() > 24 * 60 * 60 * 1000
 537         )) {
 538             profileEntry.setRequestPending(true);
 539             final SignalServiceProfile encryptedProfile;
 540             try {
 541                 encryptedProfile = profileHelper.retrieveProfileSync(address, SignalServiceProfile.RequestType.PROFILE)
 542                         .getProfile();
 543             } catch (IOException e) {
 544                 logger.warn("Failed to retrieve profile, ignoring: {}", e.getMessage());
 545                 return null;
 546             } finally {
 547                 profileEntry.setRequestPending(false);
 548             }
 549
 550             final ProfileKey profileKey = profileEntry.getProfileKey();
 551             final SignalProfile profile = decryptProfileAndDownloadAvatar(address, profileKey, encryptedProfile);
 552             account.getProfileStore()
 553                     .updateProfile(address, profileKey, now, profile, profileEntry.getProfileKeyCredential());
 554             return profile;
 555         }
 556         return profileEntry.getProfile();
 557     }
 558
 559     private ProfileKeyCredential getRecipientProfileKeyCredential(SignalServiceAddress address) {
 560         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 561         if (profileEntry == null) {
 562             return null;
 563         }
 564         if (profileEntry.getProfileKeyCredential() == null) {
 565             ProfileAndCredential profileAndCredential;
 566             try {
 567                 profileAndCredential = profileHelper.retrieveProfileSync(address,
 568                         SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 569             } catch (IOException e) {
 570                 logger.warn("Failed to retrieve profile key credential, ignoring: {}", e.getMessage());
 571                 return null;
 572             }
 573
 574             long now = new Date().getTime();
 575             final ProfileKeyCredential profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 576             final SignalProfile profile = decryptProfileAndDownloadAvatar(address,
 577                     profileEntry.getProfileKey(),
 578                     profileAndCredential.getProfile());
 579             account.getProfileStore()
 580                     .updateProfile(address, profileEntry.getProfileKey(), now, profile, profileKeyCredential);
 581             return profileKeyCredential;
 582         }
 583         return profileEntry.getProfileKeyCredential();
 584     }
 585
 586     private SignalProfile decryptProfileAndDownloadAvatar(
 587             final SignalServiceAddress address, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 588     ) {
 589         if (encryptedProfile.getAvatar() != null) {
 590             downloadProfileAvatar(address, encryptedProfile.getAvatar(), profileKey);
 591         }
 592
 593         return ProfileUtils.decryptProfile(profileKey, encryptedProfile);
 594     }
 595
 596     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(GroupId groupId) throws IOException {
 597         final StreamDetails streamDetails = avatarStore.retrieveGroupAvatar(groupId);
 598         if (streamDetails == null) {
 599             return Optional.absent();
 600         }
 601
 602         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 603     }
 604
 605     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(SignalServiceAddress address) throws IOException {
 606         final StreamDetails streamDetails = avatarStore.retrieveContactAvatar(address);
 607         if (streamDetails == null) {
 608             return Optional.absent();
 609         }
 610
 611         return Optional.of(AttachmentUtils.createAttachment(streamDetails, Optional.absent()));
 612     }
 613
 614     private GroupInfo getGroupForSending(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 615         GroupInfo g = getGroup(groupId);
 616         if (g == null) {
 617             throw new GroupNotFoundException(groupId);
 618         }
 619         if (!g.isMember(account.getSelfAddress())) {
 620             throw new NotAGroupMemberException(groupId, g.getTitle());
 621         }
 622         return g;
 623     }
 624
 625     private GroupInfo getGroupForUpdating(GroupId groupId) throws GroupNotFoundException, NotAGroupMemberException {
 626         GroupInfo g = getGroup(groupId);
 627         if (g == null) {
 628             throw new GroupNotFoundException(groupId);
 629         }
 630         if (!g.isMember(account.getSelfAddress()) && !g.isPendingMember(account.getSelfAddress())) {
 631             throw new NotAGroupMemberException(groupId, g.getTitle());
 632         }
 633         return g;
 634     }
 635
 636     public List<GroupInfo> getGroups() {
 637         return account.getGroupStore().getGroups();
 638     }
 639
 640     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 641             String messageText, List<String> attachments, GroupId groupId
 642     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 643         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 644                 .withBody(messageText);
 645         if (attachments != null) {
 646             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 647         }
 648
 649         return sendGroupMessage(messageBuilder, groupId);
 650     }
 651
 652     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 653             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, GroupId groupId
 654     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 655         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
 656                 remove,
 657                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 658                 targetSentTimestamp);
 659         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 660                 .withReaction(reaction);
 661
 662         return sendGroupMessage(messageBuilder, groupId);
 663     }
 664
 665     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 666             SignalServiceDataMessage.Builder messageBuilder, GroupId groupId
 667     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 668         final GroupInfo g = getGroupForSending(groupId);
 669
 670         GroupUtils.setGroupContext(messageBuilder, g);
 671         messageBuilder.withExpiration(g.getMessageExpirationTime());
 672
 673         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 674     }
 675
 676     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(GroupId groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 677         SignalServiceDataMessage.Builder messageBuilder;
 678
 679         final GroupInfo g = getGroupForUpdating(groupId);
 680         if (g instanceof GroupInfoV1) {
 681             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
 682             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 683                     .withId(groupId.serialize())
 684                     .build();
 685             messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 686             groupInfoV1.removeMember(account.getSelfAddress());
 687             account.getGroupStore().updateGroup(groupInfoV1);
 688         } else {
 689             final GroupInfoV2 groupInfoV2 = (GroupInfoV2) g;
 690             final Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.leaveGroup(groupInfoV2);
 691             groupInfoV2.setGroup(groupGroupChangePair.first());
 692             messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 693             account.getGroupStore().updateGroup(groupInfoV2);
 694         }
 695
 696         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 697     }
 698
 699     public Pair<GroupId, List<SendMessageResult>> updateGroup(
 700             GroupId groupId, String name, List<String> members, File avatarFile
 701     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 702         return sendUpdateGroupMessage(groupId,
 703                 name,
 704                 members == null ? null : getSignalServiceAddresses(members),
 705                 avatarFile);
 706     }
 707
 708     private Pair<GroupId, List<SendMessageResult>> sendUpdateGroupMessage(
 709             GroupId groupId, String name, Collection<SignalServiceAddress> members, File avatarFile
 710     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 711         GroupInfo g;
 712         SignalServiceDataMessage.Builder messageBuilder;
 713         if (groupId == null) {
 714             // Create new group
 715             GroupInfoV2 gv2 = groupHelper.createGroupV2(name == null ? "" : name,
 716                     members == null ? List.of() : members,
 717                     avatarFile);
 718             if (gv2 == null) {
 719                 GroupInfoV1 gv1 = new GroupInfoV1(GroupIdV1.createRandom());
 720                 gv1.addMembers(List.of(account.getSelfAddress()));
 721                 updateGroupV1(gv1, name, members, avatarFile);
 722                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 723                 g = gv1;
 724             } else {
 725                 if (avatarFile != null) {
 726                     avatarStore.storeGroupAvatar(gv2.getGroupId(),
 727                             outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 728                 }
 729                 messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 730                 g = gv2;
 731             }
 732         } else {
 733             GroupInfo group = getGroupForUpdating(groupId);
 734             if (group instanceof GroupInfoV2) {
 735                 final GroupInfoV2 groupInfoV2 = (GroupInfoV2) group;
 736
 737                 Pair<Long, List<SendMessageResult>> result = null;
 738                 if (groupInfoV2.isPendingMember(getSelfAddress())) {
 739                     Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.acceptInvite(groupInfoV2);
 740                     result = sendUpdateGroupMessage(groupInfoV2,
 741                             groupGroupChangePair.first(),
 742                             groupGroupChangePair.second());
 743                 }
 744
 745                 if (members != null) {
 746                     final Set<SignalServiceAddress> newMembers = new HashSet<>(members);
 747                     newMembers.removeAll(group.getMembers()
 748                             .stream()
 749                             .map(this::resolveSignalServiceAddress)
 750                             .collect(Collectors.toSet()));
 751                     if (newMembers.size() > 0) {
 752                         Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2,
 753                                 newMembers);
 754                         result = sendUpdateGroupMessage(groupInfoV2,
 755                                 groupGroupChangePair.first(),
 756                                 groupGroupChangePair.second());
 757                     }
 758                 }
 759                 if (result == null || name != null || avatarFile != null) {
 760                     Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2,
 761                             name,
 762                             avatarFile);
 763                     if (avatarFile != null) {
 764                         avatarStore.storeGroupAvatar(groupInfoV2.getGroupId(),
 765                                 outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 766                     }
 767                     result = sendUpdateGroupMessage(groupInfoV2,
 768                             groupGroupChangePair.first(),
 769                             groupGroupChangePair.second());
 770                 }
 771
 772                 return new Pair<>(group.getGroupId(), result.second());
 773             } else {
 774                 GroupInfoV1 gv1 = (GroupInfoV1) group;
 775                 updateGroupV1(gv1, name, members, avatarFile);
 776                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 777                 g = gv1;
 778             }
 779         }
 780
 781         account.getGroupStore().updateGroup(g);
 782
 783         final Pair<Long, List<SendMessageResult>> result = sendMessage(messageBuilder,
 784                 g.getMembersIncludingPendingWithout(account.getSelfAddress()));
 785         return new Pair<>(g.getGroupId(), result.second());
 786     }
 787
 788     private void updateGroupV1(
 789             final GroupInfoV1 g,
 790             final String name,
 791             final Collection<SignalServiceAddress> members,
 792             final File avatarFile
 793     ) throws IOException {
 794         if (name != null) {
 795             g.name = name;
 796         }
 797
 798         if (members != null) {
 799             final Set<String> newE164Members = new HashSet<>();
 800             for (SignalServiceAddress member : members) {
 801                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 802                     continue;
 803                 }
 804                 newE164Members.add(member.getNumber().get());
 805             }
 806
 807             final Map<String, UUID> registeredUsers = getRegisteredUsers(newE164Members);
 808             if (registeredUsers.size() != newE164Members.size()) {
 809                 // Some of the new members are not registered on Signal
 810                 newE164Members.removeAll(registeredUsers.keySet());
 811                 throw new IOException("Failed to add members "
 812                         + String.join(", ", newE164Members)
 813                         + " to group: Not registered on Signal");
 814             }
 815
 816             g.addMembers(members);
 817         }
 818
 819         if (avatarFile != null) {
 820             avatarStore.storeGroupAvatar(g.getGroupId(),
 821                     outputStream -> IOUtils.copyFileToStream(avatarFile, outputStream));
 822         }
 823     }
 824
 825     public Pair<GroupId, List<SendMessageResult>> joinGroup(
 826             GroupInviteLinkUrl inviteLinkUrl
 827     ) throws IOException, GroupLinkNotActiveException {
 828         return sendJoinGroupMessage(inviteLinkUrl);
 829     }
 830
 831     private Pair<GroupId, List<SendMessageResult>> sendJoinGroupMessage(
 832             GroupInviteLinkUrl inviteLinkUrl
 833     ) throws IOException, GroupLinkNotActiveException {
 834         final DecryptedGroupJoinInfo groupJoinInfo = groupHelper.getDecryptedGroupJoinInfo(inviteLinkUrl.getGroupMasterKey(),
 835                 inviteLinkUrl.getPassword());
 836         final GroupChange groupChange = groupHelper.joinGroup(inviteLinkUrl.getGroupMasterKey(),
 837                 inviteLinkUrl.getPassword(),
 838                 groupJoinInfo);
 839         final GroupInfoV2 group = getOrMigrateGroup(inviteLinkUrl.getGroupMasterKey(),
 840                 groupJoinInfo.getRevision() + 1,
 841                 groupChange.toByteArray());
 842
 843         if (group.getGroup() == null) {
 844             // Only requested member, can't send update to group members
 845             return new Pair<>(group.getGroupId(), List.of());
 846         }
 847
 848         final Pair<Long, List<SendMessageResult>> result = sendUpdateGroupMessage(group, group.getGroup(), groupChange);
 849
 850         return new Pair<>(group.getGroupId(), result.second());
 851     }
 852
 853     private static int currentTimeDays() {
 854         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
 855     }
 856
 857     private GroupsV2AuthorizationString getGroupAuthForToday(
 858             final GroupSecretParams groupSecretParams
 859     ) throws IOException {
 860         final int today = currentTimeDays();
 861         // Returns credentials for the next 7 days
 862         final HashMap<Integer, AuthCredentialResponse> credentials = groupsV2Api.getCredentials(today);
 863         // TODO cache credentials until they expire
 864         AuthCredentialResponse authCredentialResponse = credentials.get(today);
 865         try {
 866             return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
 867                     today,
 868                     groupSecretParams,
 869                     authCredentialResponse);
 870         } catch (VerificationFailedException e) {
 871             throw new IOException(e);
 872         }
 873     }
 874
 875     private Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 876             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
 877     ) throws IOException {
 878         group.setGroup(newDecryptedGroup);
 879         final SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(group,
 880                 groupChange.toByteArray());
 881         account.getGroupStore().updateGroup(group);
 882         return sendMessage(messageBuilder, group.getMembersIncludingPendingWithout(account.getSelfAddress()));
 883     }
 884
 885     Pair<Long, List<SendMessageResult>> sendGroupInfoMessage(
 886             GroupIdV1 groupId, SignalServiceAddress recipient
 887     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 888         GroupInfoV1 g;
 889         GroupInfo group = getGroupForSending(groupId);
 890         if (!(group instanceof GroupInfoV1)) {
 891             throw new RuntimeException("Received an invalid group request for a v2 group!");
 892         }
 893         g = (GroupInfoV1) group;
 894
 895         if (!g.isMember(recipient)) {
 896             throw new NotAGroupMemberException(groupId, g.name);
 897         }
 898
 899         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 900
 901         // Send group message only to the recipient who requested it
 902         return sendMessage(messageBuilder, List.of(recipient));
 903     }
 904
 905     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
 906         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 907                 .withId(g.getGroupId().serialize())
 908                 .withName(g.name)
 909                 .withMembers(new ArrayList<>(g.getMembers()));
 910
 911         try {
 912             final Optional<SignalServiceAttachmentStream> attachment = createGroupAvatarAttachment(g.getGroupId());
 913             if (attachment.isPresent()) {
 914                 group.withAvatar(attachment.get());
 915             }
 916         } catch (IOException e) {
 917             throw new AttachmentInvalidException(g.getGroupId().toBase64(), e);
 918         }
 919
 920         return SignalServiceDataMessage.newBuilder()
 921                 .asGroupMessage(group.build())
 922                 .withExpiration(g.getMessageExpirationTime());
 923     }
 924
 925     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
 926         SignalServiceGroupV2.Builder group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
 927                 .withRevision(g.getGroup().getRevision())
 928                 .withSignedGroupChange(signedGroupChange);
 929         return SignalServiceDataMessage.newBuilder()
 930                 .asGroupMessage(group.build())
 931                 .withExpiration(g.getMessageExpirationTime());
 932     }
 933
 934     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
 935             GroupIdV1 groupId, SignalServiceAddress recipient
 936     ) throws IOException {
 937         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 938                 .withId(groupId.serialize());
 939
 940         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 941                 .asGroupMessage(group.build());
 942
 943         // Send group info request message to the recipient who sent us a message with this groupId
 944         return sendMessage(messageBuilder, List.of(recipient));
 945     }
 946
 947     void sendReceipt(
 948             SignalServiceAddress remoteAddress, long messageId
 949     ) throws IOException, UntrustedIdentityException {
 950         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 951                 List.of(messageId),
 952                 System.currentTimeMillis());
 953
 954         createMessageSender().sendReceipt(remoteAddress,
 955                 unidentifiedAccessHelper.getAccessFor(remoteAddress),
 956                 receiptMessage);
 957     }
 958
 959     public Pair<Long, List<SendMessageResult>> sendMessage(
 960             String messageText, List<String> attachments, List<String> recipients
 961     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
 962         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 963                 .withBody(messageText);
 964         if (attachments != null) {
 965             List<SignalServiceAttachment> attachmentStreams = AttachmentUtils.getSignalServiceAttachments(attachments);
 966
 967             // Upload attachments here, so we only upload once even for multiple recipients
 968             SignalServiceMessageSender messageSender = createMessageSender();
 969             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 970             for (SignalServiceAttachment attachment : attachmentStreams) {
 971                 if (attachment.isStream()) {
 972                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 973                 } else if (attachment.isPointer()) {
 974                     attachmentPointers.add(attachment.asPointer());
 975                 }
 976             }
 977
 978             messageBuilder.withAttachments(attachmentPointers);
 979         }
 980         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
 981     }
 982
 983     public Pair<Long, SendMessageResult> sendSelfMessage(
 984             String messageText, List<String> attachments
 985     ) throws IOException, AttachmentInvalidException {
 986         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 987                 .withBody(messageText);
 988         if (attachments != null) {
 989             messageBuilder.withAttachments(AttachmentUtils.getSignalServiceAttachments(attachments));
 990         }
 991         return sendSelfMessage(messageBuilder);
 992     }
 993
 994     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
 995             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
 996     ) throws IOException, InvalidNumberException {
 997         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
 998                 remove,
 999                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
1000                 targetSentTimestamp);
1001         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1002                 .withReaction(reaction);
1003         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1004     }
1005
1006     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1007         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
1008
1009         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
1010         try {
1011             return sendMessage(messageBuilder, signalServiceAddresses);
1012         } catch (Exception e) {
1013             for (SignalServiceAddress address : signalServiceAddresses) {
1014                 handleEndSession(address);
1015             }
1016             account.save();
1017             throw e;
1018         }
1019     }
1020
1021     public String getContactName(String number) throws InvalidNumberException {
1022         ContactInfo 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 SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1032         ContactInfo 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         ContactInfo 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         GroupInfo 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         ContactInfo 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 SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1079                 .asExpirationUpdate();
1080         sendMessage(messageBuilder, List.of(address));
1081     }
1082
1083     /**
1084      * Change the expiration timer for a contact
1085      */
1086     public void setExpirationTimer(
1087             String number, int messageExpirationTimer
1088     ) throws IOException, InvalidNumberException {
1089         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1090         setExpirationTimer(address, messageExpirationTimer);
1091     }
1092
1093     /**
1094      * Change the expiration timer for a group
1095      */
1096     public void setExpirationTimer(GroupId groupId, int messageExpirationTimer) {
1097         GroupInfo g = getGroup(groupId);
1098         if (g instanceof GroupInfoV1) {
1099             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
1100             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1101             account.getGroupStore().updateGroup(groupInfoV1);
1102         } else {
1103             throw new RuntimeException("TODO Not implemented!");
1104         }
1105     }
1106
1107     /**
1108      * Upload the sticker pack from path.
1109      *
1110      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1111      * @return if successful, returns the URL to install the sticker pack in the signal app
1112      */
1113     public String uploadStickerPack(File path) throws IOException, StickerPackInvalidException {
1114         SignalServiceStickerManifestUpload manifest = StickerUtils.getSignalServiceStickerManifestUpload(path);
1115
1116         SignalServiceMessageSender messageSender = createMessageSender();
1117
1118         byte[] packKey = KeyUtils.createStickerUploadKey();
1119         String packId = messageSender.uploadStickerManifest(manifest, packKey);
1120
1121         Sticker sticker = new Sticker(Hex.fromStringCondensed(packId), packKey);
1122         account.getStickerStore().updateSticker(sticker);
1123         account.save();
1124
1125         try {
1126             return new URI("https",
1127                     "signal.art",
1128                     "/addstickers/",
1129                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1130                             Hex.toStringCondensed(packKey),
1131                             StandardCharsets.UTF_8)).toString();
1132         } catch (URISyntaxException e) {
1133             throw new AssertionError(e);
1134         }
1135     }
1136
1137     void requestSyncGroups() throws IOException {
1138         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1139                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1140                 .build();
1141         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1142         try {
1143             sendSyncMessage(message);
1144         } catch (UntrustedIdentityException e) {
1145             throw new AssertionError(e);
1146         }
1147     }
1148
1149     void requestSyncContacts() throws IOException {
1150         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1151                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1152                 .build();
1153         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1154         try {
1155             sendSyncMessage(message);
1156         } catch (UntrustedIdentityException e) {
1157             throw new AssertionError(e);
1158         }
1159     }
1160
1161     void requestSyncBlocked() throws IOException {
1162         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1163                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1164                 .build();
1165         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1166         try {
1167             sendSyncMessage(message);
1168         } catch (UntrustedIdentityException e) {
1169             throw new AssertionError(e);
1170         }
1171     }
1172
1173     void requestSyncConfiguration() throws IOException {
1174         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1175                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1176                 .build();
1177         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1178         try {
1179             sendSyncMessage(message);
1180         } catch (UntrustedIdentityException e) {
1181             throw new AssertionError(e);
1182         }
1183     }
1184
1185     void requestSyncKeys() throws IOException {
1186         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1187                 .setType(SignalServiceProtos.SyncMessage.Request.Type.KEYS)
1188                 .build();
1189         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1190         try {
1191             sendSyncMessage(message);
1192         } catch (UntrustedIdentityException e) {
1193             throw new AssertionError(e);
1194         }
1195     }
1196
1197     private byte[] getSenderCertificate() {
1198         // TODO support UUID capable sender certificates
1199         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1200         byte[] certificate;
1201         try {
1202             certificate = accountManager.getSenderCertificate();
1203         } catch (IOException e) {
1204             logger.warn("Failed to get sender certificate, ignoring: {}", e.getMessage());
1205             return null;
1206         }
1207         // TODO cache for a day
1208         return certificate;
1209     }
1210
1211     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1212         SignalServiceMessageSender messageSender = createMessageSender();
1213         try {
1214             messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1215         } catch (UntrustedIdentityException e) {
1216             account.getSignalProtocolStore()
1217                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1218                             e.getIdentityKey(),
1219                             TrustLevel.UNTRUSTED);
1220             throw e;
1221         }
1222     }
1223
1224     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1225         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1226         final Set<SignalServiceAddress> addressesMissingUuid = new HashSet<>();
1227
1228         for (String number : numbers) {
1229             final SignalServiceAddress resolvedAddress = canonicalizeAndResolveSignalServiceAddress(number);
1230             if (resolvedAddress.getUuid().isPresent()) {
1231                 signalServiceAddresses.add(resolvedAddress);
1232             } else {
1233                 addressesMissingUuid.add(resolvedAddress);
1234             }
1235         }
1236
1237         final Set<String> numbersMissingUuid = addressesMissingUuid.stream()
1238                 .map(a -> a.getNumber().get())
1239                 .collect(Collectors.toSet());
1240         Map<String, UUID> registeredUsers;
1241         try {
1242             registeredUsers = getRegisteredUsers(numbersMissingUuid);
1243         } catch (IOException e) {
1244             logger.warn("Failed to resolve uuids from server, ignoring: {}", e.getMessage());
1245             registeredUsers = Map.of();
1246         }
1247
1248         for (SignalServiceAddress address : addressesMissingUuid) {
1249             final String number = address.getNumber().get();
1250             if (registeredUsers.containsKey(number)) {
1251                 final SignalServiceAddress newAddress = resolveSignalServiceAddress(new SignalServiceAddress(
1252                         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(getIasKeyStore(), numbersMissingUuid, CDS_MRENCLAVE);
1266         } catch (Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException | InvalidKeyException e) {
1267             throw new IOException(e);
1268         }
1269     }
1270
1271     private Pair<Long, List<SendMessageResult>> sendMessage(
1272             SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients
1273     ) throws IOException {
1274         recipients = recipients.stream().map(this::resolveSignalServiceAddress).collect(Collectors.toSet());
1275         final long timestamp = System.currentTimeMillis();
1276         messageBuilder.withTimestamp(timestamp);
1277         getOrCreateMessagePipe();
1278         getOrCreateUnidentifiedMessagePipe();
1279         SignalServiceDataMessage message = null;
1280         try {
1281             message = messageBuilder.build();
1282             if (message.getGroupContext().isPresent()) {
1283                 try {
1284                     SignalServiceMessageSender messageSender = createMessageSender();
1285                     final boolean isRecipientUpdate = false;
1286                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients),
1287                             unidentifiedAccessHelper.getAccessFor(recipients),
1288                             isRecipientUpdate,
1289                             message);
1290                     for (SendMessageResult r : result) {
1291                         if (r.getIdentityFailure() != null) {
1292                             account.getSignalProtocolStore()
1293                                     .saveIdentity(r.getAddress(),
1294                                             r.getIdentityFailure().getIdentityKey(),
1295                                             TrustLevel.UNTRUSTED);
1296                         }
1297                     }
1298                     return new Pair<>(timestamp, result);
1299                 } catch (UntrustedIdentityException e) {
1300                     account.getSignalProtocolStore()
1301                             .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1302                                     e.getIdentityKey(),
1303                                     TrustLevel.UNTRUSTED);
1304                     return new Pair<>(timestamp, List.of());
1305                 }
1306             } else {
1307                 // Send to all individually, so sync messages are sent correctly
1308                 messageBuilder.withProfileKey(account.getProfileKey().serialize());
1309                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1310                 for (SignalServiceAddress address : recipients) {
1311                     final ContactInfo contact = account.getContactStore().getContact(address);
1312                     final int expirationTime = contact != null ? contact.messageExpirationTime : 0;
1313                     messageBuilder.withExpiration(expirationTime);
1314                     message = messageBuilder.build();
1315                     results.add(sendMessage(address, message));
1316                 }
1317                 return new Pair<>(timestamp, results);
1318             }
1319         } finally {
1320             if (message != null && message.isEndSession()) {
1321                 for (SignalServiceAddress recipient : recipients) {
1322                     handleEndSession(recipient);
1323                 }
1324             }
1325             account.save();
1326         }
1327     }
1328
1329     private Pair<Long, SendMessageResult> sendSelfMessage(
1330             SignalServiceDataMessage.Builder messageBuilder
1331     ) throws IOException {
1332         final long timestamp = System.currentTimeMillis();
1333         messageBuilder.withTimestamp(timestamp);
1334         getOrCreateMessagePipe();
1335         getOrCreateUnidentifiedMessagePipe();
1336         try {
1337             final SignalServiceAddress address = getSelfAddress();
1338
1339             final ContactInfo contact = account.getContactStore().getContact(address);
1340             final int expirationTime = contact != null ? contact.messageExpirationTime : 0;
1341             messageBuilder.withExpiration(expirationTime);
1342
1343             SignalServiceDataMessage message = messageBuilder.build();
1344             final SendMessageResult result = sendSelfMessage(message);
1345             return new Pair<>(timestamp, result);
1346         } finally {
1347             account.save();
1348         }
1349     }
1350
1351     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1352         SignalServiceMessageSender messageSender = createMessageSender();
1353
1354         SignalServiceAddress recipient = account.getSelfAddress();
1355
1356         final Optional<UnidentifiedAccessPair> unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipient);
1357         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1358                 message.getTimestamp(),
1359                 message,
1360                 message.getExpiresInSeconds(),
1361                 Map.of(recipient, unidentifiedAccess.isPresent()),
1362                 false);
1363         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1364
1365         try {
1366             long startTime = System.currentTimeMillis();
1367             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1368             return SendMessageResult.success(recipient,
1369                     unidentifiedAccess.isPresent(),
1370                     false,
1371                     System.currentTimeMillis() - startTime);
1372         } catch (UntrustedIdentityException e) {
1373             account.getSignalProtocolStore()
1374                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1375                             e.getIdentityKey(),
1376                             TrustLevel.UNTRUSTED);
1377             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1378         }
1379     }
1380
1381     private SendMessageResult sendMessage(
1382             SignalServiceAddress address, SignalServiceDataMessage message
1383     ) throws IOException {
1384         SignalServiceMessageSender messageSender = createMessageSender();
1385
1386         try {
1387             return messageSender.sendMessage(address, unidentifiedAccessHelper.getAccessFor(address), message);
1388         } catch (UntrustedIdentityException e) {
1389             account.getSignalProtocolStore()
1390                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1391                             e.getIdentityKey(),
1392                             TrustLevel.UNTRUSTED);
1393             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1394         }
1395     }
1396
1397     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1398         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(),
1399                 account.getSignalProtocolStore(),
1400                 certificateValidator);
1401         try {
1402             return cipher.decrypt(envelope);
1403         } catch (ProtocolUntrustedIdentityException e) {
1404             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1405                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e
1406                         .getCause();
1407                 final IdentityKey untrustedIdentity = identityException.getUntrustedIdentity();
1408                 if (untrustedIdentity != null) {
1409                     account.getSignalProtocolStore()
1410                             .saveIdentity(resolveSignalServiceAddress(identityException.getName()),
1411                                     untrustedIdentity,
1412                                     TrustLevel.UNTRUSTED);
1413                 }
1414                 throw identityException;
1415             }
1416             throw new AssertionError(e);
1417         }
1418     }
1419
1420     private void handleEndSession(SignalServiceAddress source) {
1421         account.getSignalProtocolStore().deleteAllSessions(source);
1422     }
1423
1424     private List<HandleAction> handleSignalServiceDataMessage(
1425             SignalServiceDataMessage message,
1426             boolean isSync,
1427             SignalServiceAddress source,
1428             SignalServiceAddress destination,
1429             boolean ignoreAttachments
1430     ) {
1431         List<HandleAction> actions = new ArrayList<>();
1432         if (message.getGroupContext().isPresent()) {
1433             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1434                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1435                 GroupIdV1 groupId = GroupId.v1(groupInfo.getGroupId());
1436                 GroupInfo group = getGroup(groupId);
1437                 if (group == null || group instanceof GroupInfoV1) {
1438                     GroupInfoV1 groupV1 = (GroupInfoV1) group;
1439                     switch (groupInfo.getType()) {
1440                         case UPDATE: {
1441                             if (groupV1 == null) {
1442                                 groupV1 = new GroupInfoV1(groupId);
1443                             }
1444
1445                             if (groupInfo.getAvatar().isPresent()) {
1446                                 SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1447                                 downloadGroupAvatar(avatar, groupV1.getGroupId());
1448                             }
1449
1450                             if (groupInfo.getName().isPresent()) {
1451                                 groupV1.name = groupInfo.getName().get();
1452                             }
1453
1454                             if (groupInfo.getMembers().isPresent()) {
1455                                 groupV1.addMembers(groupInfo.getMembers()
1456                                         .get()
1457                                         .stream()
1458                                         .map(this::resolveSignalServiceAddress)
1459                                         .collect(Collectors.toSet()));
1460                             }
1461
1462                             account.getGroupStore().updateGroup(groupV1);
1463                             break;
1464                         }
1465                         case DELIVER:
1466                             if (groupV1 == null && !isSync) {
1467                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
1468                             }
1469                             break;
1470                         case QUIT: {
1471                             if (groupV1 != null) {
1472                                 groupV1.removeMember(source);
1473                                 account.getGroupStore().updateGroup(groupV1);
1474                             }
1475                             break;
1476                         }
1477                         case REQUEST_INFO:
1478                             if (groupV1 != null && !isSync) {
1479                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
1480                             }
1481                             break;
1482                     }
1483                 } else {
1484                     // Received a group v1 message for a v2 group
1485                 }
1486             }
1487             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1488                 final SignalServiceGroupV2 groupContext = message.getGroupContext().get().getGroupV2().get();
1489                 final GroupMasterKey groupMasterKey = groupContext.getMasterKey();
1490
1491                 getOrMigrateGroup(groupMasterKey,
1492                         groupContext.getRevision(),
1493                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
1494             }
1495         }
1496
1497         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1498         if (conversationPartnerAddress != null && message.isEndSession()) {
1499             handleEndSession(conversationPartnerAddress);
1500         }
1501         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1502             if (message.getGroupContext().isPresent()) {
1503                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1504                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1505                     GroupInfoV1 group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
1506                     if (group != null) {
1507                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1508                             group.messageExpirationTime = message.getExpiresInSeconds();
1509                             account.getGroupStore().updateGroup(group);
1510                         }
1511                     }
1512                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1513                     // disappearing message timer already stored in the DecryptedGroup
1514                 }
1515             } else if (conversationPartnerAddress != null) {
1516                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1517                 if (contact == null) {
1518                     contact = new ContactInfo(conversationPartnerAddress);
1519                 }
1520                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1521                     contact.messageExpirationTime = message.getExpiresInSeconds();
1522                     account.getContactStore().updateContact(contact);
1523                 }
1524             }
1525         }
1526         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1527             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1528                 downloadAttachment(attachment);
1529             }
1530         }
1531         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1532             final ProfileKey profileKey;
1533             try {
1534                 profileKey = new ProfileKey(message.getProfileKey().get());
1535             } catch (InvalidInputException e) {
1536                 throw new AssertionError(e);
1537             }
1538             if (source.matches(account.getSelfAddress())) {
1539                 this.account.setProfileKey(profileKey);
1540             }
1541             this.account.getProfileStore().storeProfileKey(source, profileKey);
1542         }
1543         if (message.getPreviews().isPresent()) {
1544             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1545             for (SignalServiceDataMessage.Preview preview : previews) {
1546                 if (preview.getImage().isPresent()) {
1547                     downloadAttachment(preview.getImage().get());
1548                 }
1549             }
1550         }
1551         if (message.getQuote().isPresent()) {
1552             final SignalServiceDataMessage.Quote quote = message.getQuote().get();
1553
1554             for (SignalServiceDataMessage.Quote.QuotedAttachment quotedAttachment : quote.getAttachments()) {
1555                 final SignalServiceAttachment thumbnail = quotedAttachment.getThumbnail();
1556                 if (thumbnail != null) {
1557                     downloadAttachment(thumbnail);
1558                 }
1559             }
1560         }
1561         if (message.getSticker().isPresent()) {
1562             final SignalServiceDataMessage.Sticker messageSticker = message.getSticker().get();
1563             Sticker sticker = account.getStickerStore().getSticker(messageSticker.getPackId());
1564             if (sticker == null) {
1565                 sticker = new Sticker(messageSticker.getPackId(), messageSticker.getPackKey());
1566                 account.getStickerStore().updateSticker(sticker);
1567             }
1568         }
1569         return actions;
1570     }
1571
1572     private GroupInfoV2 getOrMigrateGroup(
1573             final GroupMasterKey groupMasterKey, final int revision, final byte[] signedGroupChange
1574     ) {
1575         final GroupSecretParams groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1576
1577         GroupIdV2 groupId = GroupUtils.getGroupIdV2(groupSecretParams);
1578         GroupInfo groupInfo = getGroup(groupId);
1579         final GroupInfoV2 groupInfoV2;
1580         if (groupInfo instanceof GroupInfoV1) {
1581             // Received a v2 group message for a v1 group, we need to locally migrate the group
1582             account.getGroupStore().deleteGroup(groupInfo.getGroupId());
1583             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1584             logger.info("Locally migrated group {} to group v2, id: {}",
1585                     groupInfo.getGroupId().toBase64(),
1586                     groupInfoV2.getGroupId().toBase64());
1587         } else if (groupInfo instanceof GroupInfoV2) {
1588             groupInfoV2 = (GroupInfoV2) groupInfo;
1589         } else {
1590             groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1591         }
1592
1593         if (groupInfoV2.getGroup() == null || groupInfoV2.getGroup().getRevision() < revision) {
1594             DecryptedGroup group = null;
1595             if (signedGroupChange != null
1596                     && groupInfoV2.getGroup() != null
1597                     && groupInfoV2.getGroup().getRevision() + 1 == revision) {
1598                 group = groupHelper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(), signedGroupChange, groupMasterKey);
1599             }
1600             if (group == null) {
1601                 group = groupHelper.getDecryptedGroup(groupSecretParams);
1602             }
1603             if (group != null) {
1604                 storeProfileKeysFromMembers(group);
1605                 final String avatar = group.getAvatar();
1606                 if (avatar != null && !avatar.isEmpty()) {
1607                     downloadGroupAvatar(groupId, groupSecretParams, avatar);
1608                 }
1609             }
1610             groupInfoV2.setGroup(group);
1611             account.getGroupStore().updateGroup(groupInfoV2);
1612         }
1613
1614         return groupInfoV2;
1615     }
1616
1617     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1618         for (DecryptedMember member : group.getMembersList()) {
1619             final SignalServiceAddress address = resolveSignalServiceAddress(new SignalServiceAddress(UuidUtil.parseOrThrow(
1620                     member.getUuid().toByteArray()), null));
1621             try {
1622                 account.getProfileStore()
1623                         .storeProfileKey(address, new ProfileKey(member.getProfileKey().toByteArray()));
1624             } catch (InvalidInputException ignored) {
1625             }
1626         }
1627     }
1628
1629     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1630         for (CachedMessage cachedMessage : account.getMessageCache().getCachedMessages()) {
1631             retryFailedReceivedMessage(handler, ignoreAttachments, cachedMessage);
1632         }
1633     }
1634
1635     private void retryFailedReceivedMessage(
1636             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final CachedMessage cachedMessage
1637     ) {
1638         SignalServiceEnvelope envelope = cachedMessage.loadEnvelope();
1639         if (envelope == null) {
1640             return;
1641         }
1642         SignalServiceContent content = null;
1643         if (!envelope.isReceipt()) {
1644             try {
1645                 content = decryptMessage(envelope);
1646             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1647                 return;
1648             } catch (Exception er) {
1649                 // All other errors are not recoverable, so delete the cached message
1650                 cachedMessage.delete();
1651                 return;
1652             }
1653             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1654             for (HandleAction action : actions) {
1655                 try {
1656                     action.execute(this);
1657                 } catch (Throwable e) {
1658                     logger.warn("Message action failed.", e);
1659                 }
1660             }
1661         }
1662         account.save();
1663         handler.handleMessage(envelope, content, null);
1664         cachedMessage.delete();
1665     }
1666
1667     public void receiveMessages(
1668             long timeout,
1669             TimeUnit unit,
1670             boolean returnOnTimeout,
1671             boolean ignoreAttachments,
1672             ReceiveMessageHandler handler
1673     ) throws IOException {
1674         retryFailedReceivedMessages(handler, ignoreAttachments);
1675
1676         Set<HandleAction> queuedActions = null;
1677
1678         final SignalServiceMessagePipe messagePipe = getOrCreateMessagePipe();
1679
1680         boolean hasCaughtUpWithOldMessages = false;
1681
1682         while (true) {
1683             SignalServiceEnvelope envelope;
1684             SignalServiceContent content = null;
1685             Exception exception = null;
1686             final CachedMessage[] cachedMessage = {null};
1687             try {
1688                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1689                     // store message on disk, before acknowledging receipt to the server
1690                     cachedMessage[0] = account.getMessageCache().cacheMessage(envelope1);
1691                 });
1692                 if (result.isPresent()) {
1693                     envelope = result.get();
1694                 } else {
1695                     // Received indicator that server queue is empty
1696                     hasCaughtUpWithOldMessages = true;
1697
1698                     if (queuedActions != null) {
1699                         for (HandleAction action : queuedActions) {
1700                             try {
1701                                 action.execute(this);
1702                             } catch (Throwable e) {
1703                                 logger.warn("Message action failed.", e);
1704                             }
1705                         }
1706                         account.save();
1707                         queuedActions.clear();
1708                         queuedActions = null;
1709                     }
1710
1711                     // Continue to wait another timeout for new messages
1712                     continue;
1713                 }
1714             } catch (TimeoutException e) {
1715                 if (returnOnTimeout) return;
1716                 continue;
1717             } catch (InvalidVersionException e) {
1718                 logger.warn("Error while receiving messages, ignoring: {}", e.getMessage());
1719                 continue;
1720             }
1721
1722             if (envelope.hasSource()) {
1723                 // Store uuid if we don't have it already
1724                 SignalServiceAddress source = envelope.getSourceAddress();
1725                 resolveSignalServiceAddress(source);
1726             }
1727             if (!envelope.isReceipt()) {
1728                 try {
1729                     content = decryptMessage(envelope);
1730                 } catch (Exception e) {
1731                     exception = e;
1732                 }
1733                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1734                 if (hasCaughtUpWithOldMessages) {
1735                     for (HandleAction action : actions) {
1736                         try {
1737                             action.execute(this);
1738                         } catch (Throwable e) {
1739                             logger.warn("Message action failed.", e);
1740                         }
1741                     }
1742                 } else {
1743                     if (queuedActions == null) {
1744                         queuedActions = new HashSet<>();
1745                     }
1746                     queuedActions.addAll(actions);
1747                 }
1748             }
1749             account.save();
1750             if (isMessageBlocked(envelope, content)) {
1751                 logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
1752             } else if (isNotAGroupMember(envelope, content)) {
1753                 logger.info("Ignoring a message from a non group member: {}", envelope.getTimestamp());
1754             } else {
1755                 handler.handleMessage(envelope, content, exception);
1756             }
1757             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1758                 if (cachedMessage[0] != null) {
1759                     cachedMessage[0].delete();
1760                 }
1761             }
1762         }
1763     }
1764
1765     private boolean isMessageBlocked(
1766             SignalServiceEnvelope envelope, SignalServiceContent content
1767     ) {
1768         SignalServiceAddress source;
1769         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1770             source = envelope.getSourceAddress();
1771         } else if (content != null) {
1772             source = content.getSender();
1773         } else {
1774             return false;
1775         }
1776         ContactInfo sourceContact = account.getContactStore().getContact(source);
1777         if (sourceContact != null && sourceContact.blocked) {
1778             return true;
1779         }
1780
1781         if (content != null && content.getDataMessage().isPresent()) {
1782             SignalServiceDataMessage message = content.getDataMessage().get();
1783             if (message.getGroupContext().isPresent()) {
1784                 GroupId groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1785                 GroupInfo group = getGroup(groupId);
1786                 if (group != null && group.isBlocked()) {
1787                     return true;
1788                 }
1789             }
1790         }
1791         return false;
1792     }
1793
1794     private boolean isNotAGroupMember(
1795             SignalServiceEnvelope envelope, SignalServiceContent content
1796     ) {
1797         SignalServiceAddress source;
1798         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1799             source = envelope.getSourceAddress();
1800         } else if (content != null) {
1801             source = content.getSender();
1802         } else {
1803             return false;
1804         }
1805
1806         if (content != null && content.getDataMessage().isPresent()) {
1807             SignalServiceDataMessage message = content.getDataMessage().get();
1808             if (message.getGroupContext().isPresent()) {
1809                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1810                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1811                     if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
1812                         return false;
1813                     }
1814                 }
1815                 GroupId groupId = GroupUtils.getGroupId(message.getGroupContext().get());
1816                 GroupInfo group = getGroup(groupId);
1817                 if (group != null && !group.isMember(source)) {
1818                     return true;
1819                 }
1820             }
1821         }
1822         return false;
1823     }
1824
1825     private List<HandleAction> handleMessage(
1826             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
1827     ) {
1828         List<HandleAction> actions = new ArrayList<>();
1829         if (content != null) {
1830             final SignalServiceAddress sender;
1831             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1832                 sender = envelope.getSourceAddress();
1833             } else {
1834                 sender = content.getSender();
1835             }
1836             // Store uuid if we don't have it already
1837             resolveSignalServiceAddress(sender);
1838
1839             if (content.getDataMessage().isPresent()) {
1840                 SignalServiceDataMessage message = content.getDataMessage().get();
1841
1842                 if (content.isNeedsReceipt()) {
1843                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1844                 }
1845
1846                 actions.addAll(handleSignalServiceDataMessage(message,
1847                         false,
1848                         sender,
1849                         account.getSelfAddress(),
1850                         ignoreAttachments));
1851             }
1852             if (content.getSyncMessage().isPresent()) {
1853                 account.setMultiDevice(true);
1854                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1855                 if (syncMessage.getSent().isPresent()) {
1856                     SentTranscriptMessage message = syncMessage.getSent().get();
1857                     final SignalServiceAddress destination = message.getDestination().orNull();
1858                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
1859                             true,
1860                             sender,
1861                             destination,
1862                             ignoreAttachments));
1863                 }
1864                 if (syncMessage.getRequest().isPresent()) {
1865                     RequestMessage rm = syncMessage.getRequest().get();
1866                     if (rm.isContactsRequest()) {
1867                         actions.add(SendSyncContactsAction.create());
1868                     }
1869                     if (rm.isGroupsRequest()) {
1870                         actions.add(SendSyncGroupsAction.create());
1871                     }
1872                     if (rm.isBlockedListRequest()) {
1873                         actions.add(SendSyncBlockedListAction.create());
1874                     }
1875                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
1876                 }
1877                 if (syncMessage.getGroups().isPresent()) {
1878                     File tmpFile = null;
1879                     try {
1880                         tmpFile = IOUtils.createTempFile();
1881                         final SignalServiceAttachment groupsMessage = syncMessage.getGroups().get();
1882                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(groupsMessage.asPointer(),
1883                                 tmpFile)) {
1884                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1885                             DeviceGroup g;
1886                             while ((g = s.read()) != null) {
1887                                 GroupInfoV1 syncGroup = account.getGroupStore()
1888                                         .getOrCreateGroupV1(GroupId.v1(g.getId()));
1889                                 if (syncGroup != null) {
1890                                     if (g.getName().isPresent()) {
1891                                         syncGroup.name = g.getName().get();
1892                                     }
1893                                     syncGroup.addMembers(g.getMembers()
1894                                             .stream()
1895                                             .map(this::resolveSignalServiceAddress)
1896                                             .collect(Collectors.toSet()));
1897                                     if (!g.isActive()) {
1898                                         syncGroup.removeMember(account.getSelfAddress());
1899                                     } else {
1900                                         // Add ourself to the member set as it's marked as active
1901                                         syncGroup.addMembers(List.of(account.getSelfAddress()));
1902                                     }
1903                                     syncGroup.blocked = g.isBlocked();
1904                                     if (g.getColor().isPresent()) {
1905                                         syncGroup.color = g.getColor().get();
1906                                     }
1907
1908                                     if (g.getAvatar().isPresent()) {
1909                                         downloadGroupAvatar(g.getAvatar().get(), syncGroup.getGroupId());
1910                                     }
1911                                     syncGroup.inboxPosition = g.getInboxPosition().orNull();
1912                                     syncGroup.archived = g.isArchived();
1913                                     account.getGroupStore().updateGroup(syncGroup);
1914                                 }
1915                             }
1916                         }
1917                     } catch (Exception e) {
1918                         logger.warn("Failed to handle received sync groups “{}”, ignoring: {}",
1919                                 tmpFile,
1920                                 e.getMessage());
1921                     } finally {
1922                         if (tmpFile != null) {
1923                             try {
1924                                 Files.delete(tmpFile.toPath());
1925                             } catch (IOException e) {
1926                                 logger.warn("Failed to delete received groups temp file “{}”, ignoring: {}",
1927                                         tmpFile,
1928                                         e.getMessage());
1929                             }
1930                         }
1931                     }
1932                 }
1933                 if (syncMessage.getBlockedList().isPresent()) {
1934                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1935                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1936                         setContactBlocked(resolveSignalServiceAddress(address), true);
1937                     }
1938                     for (GroupId groupId : blockedListMessage.getGroupIds()
1939                             .stream()
1940                             .map(GroupId::unknownVersion)
1941                             .collect(Collectors.toSet())) {
1942                         try {
1943                             setGroupBlocked(groupId, true);
1944                         } catch (GroupNotFoundException e) {
1945                             logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
1946                                     groupId.toBase64());
1947                         }
1948                     }
1949                 }
1950                 if (syncMessage.getContacts().isPresent()) {
1951                     File tmpFile = null;
1952                     try {
1953                         tmpFile = IOUtils.createTempFile();
1954                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1955                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
1956                                 .asPointer(), tmpFile)) {
1957                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1958                             if (contactsMessage.isComplete()) {
1959                                 account.getContactStore().clear();
1960                             }
1961                             DeviceContact c;
1962                             while ((c = s.read()) != null) {
1963                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1964                                     account.setProfileKey(c.getProfileKey().get());
1965                                 }
1966                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1967                                 ContactInfo contact = account.getContactStore().getContact(address);
1968                                 if (contact == null) {
1969                                     contact = new ContactInfo(address);
1970                                 }
1971                                 if (c.getName().isPresent()) {
1972                                     contact.name = c.getName().get();
1973                                 }
1974                                 if (c.getColor().isPresent()) {
1975                                     contact.color = c.getColor().get();
1976                                 }
1977                                 if (c.getProfileKey().isPresent()) {
1978                                     account.getProfileStore().storeProfileKey(address, c.getProfileKey().get());
1979                                 }
1980                                 if (c.getVerified().isPresent()) {
1981                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1982                                     account.getSignalProtocolStore()
1983                                             .setIdentityTrustLevel(verifiedMessage.getDestination(),
1984                                                     verifiedMessage.getIdentityKey(),
1985                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1986                                 }
1987                                 if (c.getExpirationTimer().isPresent()) {
1988                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1989                                 }
1990                                 contact.blocked = c.isBlocked();
1991                                 contact.inboxPosition = c.getInboxPosition().orNull();
1992                                 contact.archived = c.isArchived();
1993                                 account.getContactStore().updateContact(contact);
1994
1995                                 if (c.getAvatar().isPresent()) {
1996                                     downloadContactAvatar(c.getAvatar().get(), contact.getAddress());
1997                                 }
1998                             }
1999                         }
2000                     } catch (Exception e) {
2001                         logger.warn("Failed to handle received sync contacts “{}”, ignoring: {}",
2002                                 tmpFile,
2003                                 e.getMessage());
2004                     } finally {
2005                         if (tmpFile != null) {
2006                             try {
2007                                 Files.delete(tmpFile.toPath());
2008                             } catch (IOException e) {
2009                                 logger.warn("Failed to delete received contacts temp file “{}”, ignoring: {}",
2010                                         tmpFile,
2011                                         e.getMessage());
2012                             }
2013                         }
2014                     }
2015                 }
2016                 if (syncMessage.getVerified().isPresent()) {
2017                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
2018                     account.getSignalProtocolStore()
2019                             .setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()),
2020                                     verifiedMessage.getIdentityKey(),
2021                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2022                 }
2023                 if (syncMessage.getStickerPackOperations().isPresent()) {
2024                     final List<StickerPackOperationMessage> stickerPackOperationMessages = syncMessage.getStickerPackOperations()
2025                             .get();
2026                     for (StickerPackOperationMessage m : stickerPackOperationMessages) {
2027                         if (!m.getPackId().isPresent()) {
2028                             continue;
2029                         }
2030                         Sticker sticker = account.getStickerStore().getSticker(m.getPackId().get());
2031                         if (sticker == null) {
2032                             if (!m.getPackKey().isPresent()) {
2033                                 continue;
2034                             }
2035                             sticker = new Sticker(m.getPackId().get(), m.getPackKey().get());
2036                         }
2037                         sticker.setInstalled(!m.getType().isPresent()
2038                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2039                         account.getStickerStore().updateSticker(sticker);
2040                     }
2041                 }
2042                 if (syncMessage.getFetchType().isPresent()) {
2043                     switch (syncMessage.getFetchType().get()) {
2044                         case LOCAL_PROFILE:
2045                             getRecipientProfile(getSelfAddress(), true);
2046                         case STORAGE_MANIFEST:
2047                             // TODO
2048                     }
2049                 }
2050                 if (syncMessage.getKeys().isPresent()) {
2051                     final KeysMessage keysMessage = syncMessage.getKeys().get();
2052                     if (keysMessage.getStorageService().isPresent()) {
2053                         final StorageKey storageKey = keysMessage.getStorageService().get();
2054                         account.setStorageKey(storageKey);
2055                     }
2056                 }
2057                 if (syncMessage.getConfiguration().isPresent()) {
2058                     // TODO
2059                 }
2060             }
2061         }
2062         return actions;
2063     }
2064
2065     private void downloadContactAvatar(SignalServiceAttachment avatar, SignalServiceAddress address) {
2066         try {
2067             avatarStore.storeContactAvatar(address, outputStream -> retrieveAttachment(avatar, outputStream));
2068         } catch (IOException e) {
2069             logger.warn("Failed to download avatar for contact {}, ignoring: {}", address, e.getMessage());
2070         }
2071     }
2072
2073     private void downloadGroupAvatar(SignalServiceAttachment avatar, GroupId groupId) {
2074         try {
2075             avatarStore.storeGroupAvatar(groupId, outputStream -> retrieveAttachment(avatar, outputStream));
2076         } catch (IOException e) {
2077             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2078         }
2079     }
2080
2081     private void downloadGroupAvatar(GroupId groupId, GroupSecretParams groupSecretParams, String cdnKey) {
2082         try {
2083             avatarStore.storeGroupAvatar(groupId,
2084                     outputStream -> retrieveGroupV2Avatar(groupSecretParams, cdnKey, outputStream));
2085         } catch (IOException e) {
2086             logger.warn("Failed to download avatar for group {}, ignoring: {}", groupId.toBase64(), e.getMessage());
2087         }
2088     }
2089
2090     private void downloadProfileAvatar(
2091             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2092     ) {
2093         try {
2094             avatarStore.storeProfileAvatar(address,
2095                     outputStream -> retrieveProfileAvatar(avatarPath, profileKey, outputStream));
2096         } catch (Throwable e) {
2097             logger.warn("Failed to download profile avatar, ignoring: {}", e.getMessage());
2098         }
2099     }
2100
2101     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2102         return attachmentStore.getAttachmentFile(attachmentId);
2103     }
2104
2105     private void downloadAttachment(final SignalServiceAttachment attachment) {
2106         if (!attachment.isPointer()) {
2107             logger.warn("Invalid state, can't store an attachment stream.");
2108         }
2109
2110         SignalServiceAttachmentPointer pointer = attachment.asPointer();
2111         if (pointer.getPreview().isPresent()) {
2112             final byte[] preview = pointer.getPreview().get();
2113             try {
2114                 attachmentStore.storeAttachmentPreview(pointer.getRemoteId(),
2115                         outputStream -> outputStream.write(preview, 0, preview.length));
2116             } catch (IOException e) {
2117                 logger.warn("Failed to download attachment preview, ignoring: {}", e.getMessage());
2118             }
2119         }
2120
2121         try {
2122             attachmentStore.storeAttachment(pointer.getRemoteId(),
2123                     outputStream -> retrieveAttachmentPointer(pointer, outputStream));
2124         } catch (IOException e) {
2125             logger.warn("Failed to download attachment ({}), ignoring: {}", pointer.getRemoteId(), e.getMessage());
2126         }
2127     }
2128
2129     private void retrieveGroupV2Avatar(
2130             GroupSecretParams groupSecretParams, String cdnKey, OutputStream outputStream
2131     ) throws IOException {
2132         GroupsV2Operations.GroupOperations groupOperations = groupsV2Operations.forGroup(groupSecretParams);
2133
2134         File tmpFile = IOUtils.createTempFile();
2135         try (InputStream input = messageReceiver.retrieveGroupsV2ProfileAvatar(cdnKey,
2136                 tmpFile,
2137                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2138             byte[] encryptedData = IOUtils.readFully(input);
2139
2140             byte[] decryptedData = groupOperations.decryptAvatar(encryptedData);
2141             outputStream.write(decryptedData);
2142         } finally {
2143             try {
2144                 Files.delete(tmpFile.toPath());
2145             } catch (IOException e) {
2146                 logger.warn("Failed to delete received group avatar temp file “{}”, ignoring: {}",
2147                         tmpFile,
2148                         e.getMessage());
2149             }
2150         }
2151     }
2152
2153     private void retrieveProfileAvatar(
2154             String avatarPath, ProfileKey profileKey, OutputStream outputStream
2155     ) throws IOException {
2156         File tmpFile = IOUtils.createTempFile();
2157         try (InputStream input = messageReceiver.retrieveProfileAvatar(avatarPath,
2158                 tmpFile,
2159                 profileKey,
2160                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2161             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2162             IOUtils.copyStream(input, outputStream, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2163         } finally {
2164             try {
2165                 Files.delete(tmpFile.toPath());
2166             } catch (IOException e) {
2167                 logger.warn("Failed to delete received profile avatar temp file “{}”, ignoring: {}",
2168                         tmpFile,
2169                         e.getMessage());
2170             }
2171         }
2172     }
2173
2174     private void retrieveAttachment(
2175             final SignalServiceAttachment attachment, final OutputStream outputStream
2176     ) throws IOException {
2177         if (attachment.isPointer()) {
2178             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2179             retrieveAttachmentPointer(pointer, outputStream);
2180         } else {
2181             SignalServiceAttachmentStream stream = attachment.asStream();
2182             IOUtils.copyStream(stream.getInputStream(), outputStream);
2183         }
2184     }
2185
2186     private void retrieveAttachmentPointer(
2187             SignalServiceAttachmentPointer pointer, OutputStream outputStream
2188     ) throws IOException {
2189         File tmpFile = IOUtils.createTempFile();
2190         try (InputStream input = retrieveAttachmentAsStream(pointer, tmpFile)) {
2191             IOUtils.copyStream(input, outputStream);
2192         } catch (MissingConfigurationException | InvalidMessageException e) {
2193             throw new IOException(e);
2194         } finally {
2195             try {
2196                 Files.delete(tmpFile.toPath());
2197             } catch (IOException e) {
2198                 logger.warn("Failed to delete received attachment temp file “{}”, ignoring: {}",
2199                         tmpFile,
2200                         e.getMessage());
2201             }
2202         }
2203     }
2204
2205     private InputStream retrieveAttachmentAsStream(
2206             SignalServiceAttachmentPointer pointer, File tmpFile
2207     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2208         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2209     }
2210
2211     void sendGroups() throws IOException, UntrustedIdentityException {
2212         File groupsFile = IOUtils.createTempFile();
2213
2214         try {
2215             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2216                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
2217                 for (GroupInfo record : getGroups()) {
2218                     if (record instanceof GroupInfoV1) {
2219                         GroupInfoV1 groupInfo = (GroupInfoV1) record;
2220                         out.write(new DeviceGroup(groupInfo.getGroupId().serialize(),
2221                                 Optional.fromNullable(groupInfo.name),
2222                                 new ArrayList<>(groupInfo.getMembers()),
2223                                 createGroupAvatarAttachment(groupInfo.getGroupId()),
2224                                 groupInfo.isMember(account.getSelfAddress()),
2225                                 Optional.of(groupInfo.messageExpirationTime),
2226                                 Optional.fromNullable(groupInfo.color),
2227                                 groupInfo.blocked,
2228                                 Optional.fromNullable(groupInfo.inboxPosition),
2229                                 groupInfo.archived));
2230                     }
2231                 }
2232             }
2233
2234             if (groupsFile.exists() && groupsFile.length() > 0) {
2235                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
2236                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2237                             .withStream(groupsFileStream)
2238                             .withContentType("application/octet-stream")
2239                             .withLength(groupsFile.length())
2240                             .build();
2241
2242                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2243                 }
2244             }
2245         } finally {
2246             try {
2247                 Files.delete(groupsFile.toPath());
2248             } catch (IOException e) {
2249                 logger.warn("Failed to delete groups temp file “{}”, ignoring: {}", groupsFile, e.getMessage());
2250             }
2251         }
2252     }
2253
2254     public void sendContacts() throws IOException, UntrustedIdentityException {
2255         File contactsFile = IOUtils.createTempFile();
2256
2257         try {
2258             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2259                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
2260                 for (ContactInfo record : account.getContactStore().getContacts()) {
2261                     VerifiedMessage verifiedMessage = null;
2262                     IdentityInfo currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
2263                     if (currentIdentity != null) {
2264                         verifiedMessage = new VerifiedMessage(record.getAddress(),
2265                                 currentIdentity.getIdentityKey(),
2266                                 currentIdentity.getTrustLevel().toVerifiedState(),
2267                                 currentIdentity.getDateAdded().getTime());
2268                     }
2269
2270                     ProfileKey profileKey = account.getProfileStore().getProfileKey(record.getAddress());
2271                     out.write(new DeviceContact(record.getAddress(),
2272                             Optional.fromNullable(record.name),
2273                             createContactAvatarAttachment(record.getAddress()),
2274                             Optional.fromNullable(record.color),
2275                             Optional.fromNullable(verifiedMessage),
2276                             Optional.fromNullable(profileKey),
2277                             record.blocked,
2278                             Optional.of(record.messageExpirationTime),
2279                             Optional.fromNullable(record.inboxPosition),
2280                             record.archived));
2281                 }
2282
2283                 if (account.getProfileKey() != null) {
2284                     // Send our own profile key as well
2285                     out.write(new DeviceContact(account.getSelfAddress(),
2286                             Optional.absent(),
2287                             Optional.absent(),
2288                             Optional.absent(),
2289                             Optional.absent(),
2290                             Optional.of(account.getProfileKey()),
2291                             false,
2292                             Optional.absent(),
2293                             Optional.absent(),
2294                             false));
2295                 }
2296             }
2297
2298             if (contactsFile.exists() && contactsFile.length() > 0) {
2299                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
2300                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2301                             .withStream(contactsFileStream)
2302                             .withContentType("application/octet-stream")
2303                             .withLength(contactsFile.length())
2304                             .build();
2305
2306                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2307                 }
2308             }
2309         } finally {
2310             try {
2311                 Files.delete(contactsFile.toPath());
2312             } catch (IOException e) {
2313                 logger.warn("Failed to delete contacts temp file “{}”, ignoring: {}", contactsFile, e.getMessage());
2314             }
2315         }
2316     }
2317
2318     void sendBlockedList() throws IOException, UntrustedIdentityException {
2319         List<SignalServiceAddress> addresses = new ArrayList<>();
2320         for (ContactInfo record : account.getContactStore().getContacts()) {
2321             if (record.blocked) {
2322                 addresses.add(record.getAddress());
2323             }
2324         }
2325         List<byte[]> groupIds = new ArrayList<>();
2326         for (GroupInfo record : getGroups()) {
2327             if (record.isBlocked()) {
2328                 groupIds.add(record.getGroupId().serialize());
2329             }
2330         }
2331         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2332     }
2333
2334     private void sendVerifiedMessage(
2335             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2336     ) throws IOException, UntrustedIdentityException {
2337         VerifiedMessage verifiedMessage = new VerifiedMessage(destination,
2338                 identityKey,
2339                 trustLevel.toVerifiedState(),
2340                 System.currentTimeMillis());
2341         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2342     }
2343
2344     public List<ContactInfo> getContacts() {
2345         return account.getContactStore().getContacts();
2346     }
2347
2348     public String getContactOrProfileName(String number) {
2349         final SignalServiceAddress address = Utils.getSignalServiceAddressFromIdentifier(number);
2350
2351         final ContactInfo contact = account.getContactStore().getContact(address);
2352         if (contact != null && !Util.isEmpty(contact.name)) {
2353             return contact.name;
2354         }
2355
2356         final SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
2357         if (profileEntry != null && profileEntry.getProfile() != null) {
2358             return profileEntry.getProfile().getName();
2359         }
2360
2361         return null;
2362     }
2363
2364     public GroupInfo getGroup(GroupId groupId) {
2365         final GroupInfo group = account.getGroupStore().getGroup(groupId);
2366         if (group instanceof GroupInfoV2 && ((GroupInfoV2) group).getGroup() == null) {
2367             final GroupSecretParams groupSecretParams = GroupSecretParams.deriveFromMasterKey(((GroupInfoV2) group).getMasterKey());
2368             ((GroupInfoV2) group).setGroup(groupHelper.getDecryptedGroup(groupSecretParams));
2369             account.getGroupStore().updateGroup(group);
2370         }
2371         return group;
2372     }
2373
2374     public List<IdentityInfo> getIdentities() {
2375         return account.getSignalProtocolStore().getIdentities();
2376     }
2377
2378     public List<IdentityInfo> getIdentities(String number) throws InvalidNumberException {
2379         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
2380     }
2381
2382     /**
2383      * Trust this the identity with this fingerprint
2384      *
2385      * @param name        username of the identity
2386      * @param fingerprint Fingerprint
2387      */
2388     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2389         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2390         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2391         if (ids == null) {
2392             return false;
2393         }
2394         for (IdentityInfo id : ids) {
2395             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
2396                 continue;
2397             }
2398
2399             account.getSignalProtocolStore()
2400                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2401             try {
2402                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2403             } catch (IOException | UntrustedIdentityException e) {
2404                 logger.warn("Failed to send verification sync message: {}", e.getMessage());
2405             }
2406             account.save();
2407             return true;
2408         }
2409         return false;
2410     }
2411
2412     /**
2413      * Trust this the identity with this safety number
2414      *
2415      * @param name         username of the identity
2416      * @param safetyNumber Safety number
2417      */
2418     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2419         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2420         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2421         if (ids == null) {
2422             return false;
2423         }
2424         for (IdentityInfo id : ids) {
2425             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2426                 continue;
2427             }
2428
2429             account.getSignalProtocolStore()
2430                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2431             try {
2432                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2433             } catch (IOException | UntrustedIdentityException e) {
2434                 logger.warn("Failed to send verification sync message: {}", e.getMessage());
2435             }
2436             account.save();
2437             return true;
2438         }
2439         return false;
2440     }
2441
2442     /**
2443      * Trust all keys of this identity without verification
2444      *
2445      * @param name username of the identity
2446      */
2447     public boolean trustIdentityAllKeys(String name) {
2448         SignalServiceAddress address = resolveSignalServiceAddress(name);
2449         List<IdentityInfo> ids = account.getSignalProtocolStore().getIdentities(address);
2450         if (ids == null) {
2451             return false;
2452         }
2453         for (IdentityInfo id : ids) {
2454             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2455                 account.getSignalProtocolStore()
2456                         .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2457                 try {
2458                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2459                 } catch (IOException | UntrustedIdentityException e) {
2460                     logger.warn("Failed to send verification sync message: {}", e.getMessage());
2461                 }
2462             }
2463         }
2464         account.save();
2465         return true;
2466     }
2467
2468     public String computeSafetyNumber(
2469             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2470     ) {
2471         return Utils.computeSafetyNumber(ServiceConfig.capabilities.isUuid(),
2472                 account.getSelfAddress(),
2473                 getIdentityKeyPair().getPublicKey(),
2474                 theirAddress,
2475                 theirIdentityKey);
2476     }
2477
2478     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2479         String canonicalizedNumber = UuidUtil.isUuid(identifier)
2480                 ? identifier
2481                 : PhoneNumberFormatter.formatNumber(identifier, account.getUsername());
2482         return resolveSignalServiceAddress(canonicalizedNumber);
2483     }
2484
2485     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2486         SignalServiceAddress address = Utils.getSignalServiceAddressFromIdentifier(identifier);
2487
2488         return resolveSignalServiceAddress(address);
2489     }
2490
2491     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2492         if (address.matches(account.getSelfAddress())) {
2493             return account.getSelfAddress();
2494         }
2495
2496         return account.getRecipientStore().resolveServiceAddress(address);
2497     }
2498
2499     @Override
2500     public void close() throws IOException {
2501         close(true);
2502     }
2503
2504     void close(boolean closeAccount) throws IOException {
2505         if (messagePipe != null) {
2506             messagePipe.shutdown();
2507             messagePipe = null;
2508         }
2509
2510         if (unidentifiedMessagePipe != null) {
2511             unidentifiedMessagePipe.shutdown();
2512             unidentifiedMessagePipe = null;
2513         }
2514
2515         if (closeAccount && account != null) {
2516             account.close();
2517         }
2518         account = null;
2519     }
2520
2521     public interface ReceiveMessageHandler {
2522
2523         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2524     }
2525 }