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