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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.signal.manager.helper.GroupHelper;
  22 import org.asamk.signal.manager.helper.ProfileHelper;
  23 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  24 import org.asamk.signal.storage.SignalAccount;
  25 import org.asamk.signal.storage.contacts.ContactInfo;
  26 import org.asamk.signal.storage.groups.GroupInfo;
  27 import org.asamk.signal.storage.groups.GroupInfoV1;
  28 import org.asamk.signal.storage.groups.GroupInfoV2;
  29 import org.asamk.signal.storage.profiles.SignalProfile;
  30 import org.asamk.signal.storage.profiles.SignalProfileEntry;
  31 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  32 import org.asamk.signal.storage.stickers.Sticker;
  33 import org.asamk.signal.util.IOUtils;
  34 import org.asamk.signal.util.Util;
  35 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  36 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  37 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  38 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  39 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  40 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  41 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  42 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  43 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  44 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  45 import org.signal.libsignal.metadata.SelfSendException;
  46 import org.signal.storageservice.protos.groups.GroupChange;
  47 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
  48 import org.signal.storageservice.protos.groups.local.DecryptedMember;
  49 import org.signal.zkgroup.InvalidInputException;
  50 import org.signal.zkgroup.VerificationFailedException;
  51 import org.signal.zkgroup.auth.AuthCredentialResponse;
  52 import org.signal.zkgroup.groups.GroupMasterKey;
  53 import org.signal.zkgroup.groups.GroupSecretParams;
  54 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  55 import org.signal.zkgroup.profiles.ProfileKey;
  56 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  57 import org.whispersystems.libsignal.IdentityKey;
  58 import org.whispersystems.libsignal.IdentityKeyPair;
  59 import org.whispersystems.libsignal.InvalidKeyException;
  60 import org.whispersystems.libsignal.InvalidMessageException;
  61 import org.whispersystems.libsignal.InvalidVersionException;
  62 import org.whispersystems.libsignal.ecc.Curve;
  63 import org.whispersystems.libsignal.ecc.ECKeyPair;
  64 import org.whispersystems.libsignal.ecc.ECPublicKey;
  65 import org.whispersystems.libsignal.state.PreKeyRecord;
  66 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  67 import org.whispersystems.libsignal.util.KeyHelper;
  68 import org.whispersystems.libsignal.util.Medium;
  69 import org.whispersystems.libsignal.util.Pair;
  70 import org.whispersystems.libsignal.util.guava.Optional;
  71 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  72 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  73 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  74 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  75 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  76 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  77 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  78 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  79 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  80 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  81 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
  82 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  83 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  84 import org.whispersystems.signalservice.api.groupsv2.InvalidGroupStateException;
  85 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  86 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  87 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  88 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  89 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  90 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  91 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  92 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  93 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  94 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
  95 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  96 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  97 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  98 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  99 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 100 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 101 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 102 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 103 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 104 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 105 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 106 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 107 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 108 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 109 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 110 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 111 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 112 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 113 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 114 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
 115 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 116 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 117 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 118 import org.whispersystems.signalservice.api.util.SleepTimer;
 119 import org.whispersystems.signalservice.api.util.StreamDetails;
 120 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 121 import org.whispersystems.signalservice.api.util.UuidUtil;
 122 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 123 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 124 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 125 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 126 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 127 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 128 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 129 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 130 import org.whispersystems.signalservice.internal.util.Hex;
 131 import org.whispersystems.util.Base64;
 132
 133 import java.io.Closeable;
 134 import java.io.File;
 135 import java.io.FileInputStream;
 136 import java.io.FileNotFoundException;
 137 import java.io.FileOutputStream;
 138 import java.io.IOException;
 139 import java.io.InputStream;
 140 import java.io.OutputStream;
 141 import java.net.URI;
 142 import java.net.URISyntaxException;
 143 import java.net.URLEncoder;
 144 import java.nio.charset.StandardCharsets;
 145 import java.nio.file.Files;
 146 import java.nio.file.Paths;
 147 import java.nio.file.StandardCopyOption;
 148 import java.security.SignatureException;
 149 import java.util.ArrayList;
 150 import java.util.Arrays;
 151 import java.util.Collection;
 152 import java.util.Collections;
 153 import java.util.Date;
 154 import java.util.HashMap;
 155 import java.util.HashSet;
 156 import java.util.List;
 157 import java.util.Locale;
 158 import java.util.Map;
 159 import java.util.Objects;
 160 import java.util.Set;
 161 import java.util.UUID;
 162 import java.util.concurrent.ExecutorService;
 163 import java.util.concurrent.TimeUnit;
 164 import java.util.concurrent.TimeoutException;
 165 import java.util.stream.Collectors;
 166 import java.util.zip.ZipEntry;
 167 import java.util.zip.ZipFile;
 168
 169 import static org.asamk.signal.manager.ServiceConfig.CDS_MRENCLAVE;
 170 import static org.asamk.signal.manager.ServiceConfig.capabilities;
 171 import static org.asamk.signal.manager.ServiceConfig.getIasKeyStore;
 172
 173 public class Manager implements Closeable {
 174
 175     private final SleepTimer timer = new UptimeSleepTimer();
 176
 177     private final SignalServiceConfiguration serviceConfiguration;
 178     private final String userAgent;
 179     private final boolean discoverableByPhoneNumber = true;
 180     private final boolean unrestrictedUnidentifiedAccess = false;
 181
 182     private final SignalAccount account;
 183     private final PathConfig pathConfig;
 184     private SignalServiceAccountManager accountManager;
 185     private GroupsV2Api groupsV2Api;
 186     private final GroupsV2Operations groupsV2Operations;
 187
 188     private SignalServiceMessageReceiver messageReceiver = null;
 189     private SignalServiceMessagePipe messagePipe = null;
 190     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 191
 192     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 193     private final ProfileHelper profileHelper;
 194     private final GroupHelper groupHelper;
 195
 196     public Manager(
 197             SignalAccount account,
 198             PathConfig pathConfig,
 199             SignalServiceConfiguration serviceConfiguration,
 200             String userAgent
 201     ) {
 202         this.account = account;
 203         this.pathConfig = pathConfig;
 204         this.serviceConfiguration = serviceConfiguration;
 205         this.userAgent = userAgent;
 206         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 207                 serviceConfiguration)) : null;
 208         this.accountManager = createSignalServiceAccountManager();
 209         this.groupsV2Api = accountManager.getGroupsV2Api();
 210
 211         this.account.setResolver(this::resolveSignalServiceAddress);
 212
 213         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 214                 account.getProfileStore()::getProfileKey,
 215                 this::getRecipientProfile,
 216                 this::getSenderCertificate);
 217         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 218                 unidentifiedAccessHelper::getAccessFor,
 219                 unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
 220                 this::getOrCreateMessageReceiver);
 221         this.groupHelper = new GroupHelper(this::getRecipientProfileKeyCredential,
 222                 this::getRecipientProfile,
 223                 account::getSelfAddress,
 224                 groupsV2Operations,
 225                 groupsV2Api,
 226                 this::getGroupAuthForToday);
 227     }
 228
 229     public String getUsername() {
 230         return account.getUsername();
 231     }
 232
 233     public SignalServiceAddress getSelfAddress() {
 234         return account.getSelfAddress();
 235     }
 236
 237     private SignalServiceAccountManager createSignalServiceAccountManager() {
 238         return new SignalServiceAccountManager(serviceConfiguration,
 239                 new DynamicCredentialsProvider(account.getUuid(),
 240                         account.getUsername(),
 241                         account.getPassword(),
 242                         null,
 243                         account.getDeviceId()),
 244                 userAgent,
 245                 groupsV2Operations,
 246                 timer);
 247     }
 248
 249     private IdentityKeyPair getIdentityKeyPair() {
 250         return account.getSignalProtocolStore().getIdentityKeyPair();
 251     }
 252
 253     public int getDeviceId() {
 254         return account.getDeviceId();
 255     }
 256
 257     private String getMessageCachePath() {
 258         return pathConfig.getDataPath() + "/" + account.getUsername() + ".d/msg-cache";
 259     }
 260
 261     private String getMessageCachePath(String sender) {
 262         if (sender == null || sender.isEmpty()) {
 263             return getMessageCachePath();
 264         }
 265
 266         return getMessageCachePath() + "/" + sender.replace("/", "_");
 267     }
 268
 269     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 270         String cachePath = getMessageCachePath(sender);
 271         IOUtils.createPrivateDirectories(cachePath);
 272         return new File(cachePath + "/" + now + "_" + timestamp);
 273     }
 274
 275     public static Manager init(
 276             String username, String settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent
 277     ) throws IOException {
 278         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 279
 280         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 281             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 282             int registrationId = KeyHelper.generateRegistrationId(false);
 283
 284             ProfileKey profileKey = KeyUtils.createProfileKey();
 285             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(),
 286                     username,
 287                     identityKey,
 288                     registrationId,
 289                     profileKey);
 290             account.save();
 291
 292             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 293         }
 294
 295         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 296
 297         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 298
 299         m.migrateLegacyConfigs();
 300
 301         return m;
 302     }
 303
 304     private void migrateLegacyConfigs() {
 305         if (account.getProfileKey() == null && isRegistered()) {
 306             // Old config file, creating new profile key
 307             account.setProfileKey(KeyUtils.createProfileKey());
 308             account.save();
 309         }
 310         // Store profile keys only in profile store
 311         for (ContactInfo contact : account.getContactStore().getContacts()) {
 312             String profileKeyString = contact.profileKey;
 313             if (profileKeyString == null) {
 314                 continue;
 315             }
 316             final ProfileKey profileKey;
 317             try {
 318                 profileKey = new ProfileKey(Base64.decode(profileKeyString));
 319             } catch (InvalidInputException | IOException e) {
 320                 continue;
 321             }
 322             contact.profileKey = null;
 323             account.getProfileStore().storeProfileKey(contact.getAddress(), profileKey);
 324         }
 325         // Ensure our profile key is stored in profile store
 326         account.getProfileStore().storeProfileKey(getSelfAddress(), account.getProfileKey());
 327     }
 328
 329     public void checkAccountState() throws IOException {
 330         if (account.isRegistered()) {
 331             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 332                 refreshPreKeys();
 333                 account.save();
 334             }
 335             if (account.getUuid() == null) {
 336                 account.setUuid(accountManager.getOwnUuid());
 337                 account.save();
 338             }
 339             updateAccountAttributes();
 340         }
 341     }
 342
 343     public boolean isRegistered() {
 344         return account.isRegistered();
 345     }
 346
 347     public void register(boolean voiceVerification, String captcha) throws IOException {
 348         account.setPassword(KeyUtils.createPassword());
 349
 350         // Resetting UUID, because registering doesn't work otherwise
 351         account.setUuid(null);
 352         accountManager = createSignalServiceAccountManager();
 353         this.groupsV2Api = accountManager.getGroupsV2Api();
 354
 355         if (voiceVerification) {
 356             accountManager.requestVoiceVerificationCode(Locale.getDefault(),
 357                     Optional.fromNullable(captcha),
 358                     Optional.absent());
 359         } else {
 360             accountManager.requestSmsVerificationCode(false, Optional.fromNullable(captcha), Optional.absent());
 361         }
 362
 363         account.setRegistered(false);
 364         account.save();
 365     }
 366
 367     public void updateAccountAttributes() throws IOException {
 368         accountManager.setAccountAttributes(account.getSignalingKey(),
 369                 account.getSignalProtocolStore().getLocalRegistrationId(),
 370                 true,
 371                 account.getRegistrationLockPin(),
 372                 account.getRegistrationLock(),
 373                 unidentifiedAccessHelper.getSelfUnidentifiedAccessKey(),
 374                 unrestrictedUnidentifiedAccess,
 375                 capabilities,
 376                 discoverableByPhoneNumber);
 377     }
 378
 379     public void setProfile(String name, File avatar) throws IOException {
 380         try (final StreamDetails streamDetails = avatar == null ? null : Utils.createStreamDetailsFromFile(avatar)) {
 381             accountManager.setVersionedProfile(account.getUuid(), account.getProfileKey(), name, streamDetails);
 382         }
 383     }
 384
 385     public void unregister() throws IOException {
 386         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 387         // If this is the master device, other users can't send messages to this number anymore.
 388         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 389         accountManager.setGcmId(Optional.absent());
 390
 391         account.setRegistered(false);
 392         account.save();
 393     }
 394
 395     public List<DeviceInfo> getLinkedDevices() throws IOException {
 396         List<DeviceInfo> devices = accountManager.getDevices();
 397         account.setMultiDevice(devices.size() > 1);
 398         account.save();
 399         return devices;
 400     }
 401
 402     public void removeLinkedDevices(int deviceId) throws IOException {
 403         accountManager.removeDevice(deviceId);
 404         List<DeviceInfo> devices = accountManager.getDevices();
 405         account.setMultiDevice(devices.size() > 1);
 406         account.save();
 407     }
 408
 409     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 410         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 411
 412         addDevice(info.deviceIdentifier, info.deviceKey);
 413     }
 414
 415     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 416         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 417         String verificationCode = accountManager.getNewDeviceVerificationCode();
 418
 419         accountManager.addDevice(deviceIdentifier,
 420                 deviceKey,
 421                 identityKeyPair,
 422                 Optional.of(account.getProfileKey().serialize()),
 423                 verificationCode);
 424         account.setMultiDevice(true);
 425         account.save();
 426     }
 427
 428     private List<PreKeyRecord> generatePreKeys() {
 429         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 430
 431         final int offset = account.getPreKeyIdOffset();
 432         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 433             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 434             ECKeyPair keyPair = Curve.generateKeyPair();
 435             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 436
 437             records.add(record);
 438         }
 439
 440         account.addPreKeys(records);
 441         account.save();
 442
 443         return records;
 444     }
 445
 446     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 447         try {
 448             ECKeyPair keyPair = Curve.generateKeyPair();
 449             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(),
 450                     keyPair.getPublicKey().serialize());
 451             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(),
 452                     System.currentTimeMillis(),
 453                     keyPair,
 454                     signature);
 455
 456             account.addSignedPreKey(record);
 457             account.save();
 458
 459             return record;
 460         } catch (InvalidKeyException e) {
 461             throw new AssertionError(e);
 462         }
 463     }
 464
 465     public void verifyAccount(String verificationCode, String pin) throws IOException {
 466         verificationCode = verificationCode.replace("-", "");
 467         account.setSignalingKey(KeyUtils.createSignalingKey());
 468         // TODO make unrestricted unidentified access configurable
 469         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode,
 470                 account.getSignalingKey(),
 471                 account.getSignalProtocolStore().getLocalRegistrationId(),
 472                 true,
 473                 pin,
 474                 null,
 475                 unidentifiedAccessHelper.getSelfUnidentifiedAccessKey(),
 476                 unrestrictedUnidentifiedAccess,
 477                 capabilities,
 478                 discoverableByPhoneNumber);
 479
 480         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 481         // TODO response.isStorageCapable()
 482         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 483         account.setRegistered(true);
 484         account.setUuid(uuid);
 485         account.setRegistrationLockPin(pin);
 486         account.getSignalProtocolStore()
 487                 .saveIdentity(account.getSelfAddress(),
 488                         getIdentityKeyPair().getPublicKey(),
 489                         TrustLevel.TRUSTED_VERIFIED);
 490
 491         refreshPreKeys();
 492         account.save();
 493     }
 494
 495     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 496         if (pin.isPresent()) {
 497             account.setRegistrationLockPin(pin.get());
 498             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 499         } else {
 500             account.setRegistrationLockPin(null);
 501             accountManager.removeRegistrationLockV1();
 502         }
 503         account.save();
 504     }
 505
 506     void refreshPreKeys() throws IOException {
 507         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 508         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 509         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 510
 511         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 512     }
 513
 514     private SignalServiceMessageReceiver createMessageReceiver() {
 515         final ClientZkProfileOperations clientZkProfileOperations = capabilities.isGv2() ? ClientZkOperations.create(
 516                 serviceConfiguration).getProfileOperations() : null;
 517         return new SignalServiceMessageReceiver(serviceConfiguration,
 518                 account.getUuid(),
 519                 account.getUsername(),
 520                 account.getPassword(),
 521                 account.getDeviceId(),
 522                 account.getSignalingKey(),
 523                 userAgent,
 524                 null,
 525                 timer,
 526                 clientZkProfileOperations);
 527     }
 528
 529     private SignalServiceMessageReceiver getOrCreateMessageReceiver() {
 530         if (messageReceiver == null) {
 531             messageReceiver = createMessageReceiver();
 532         }
 533         return messageReceiver;
 534     }
 535
 536     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 537         if (messagePipe == null) {
 538             messagePipe = getOrCreateMessageReceiver().createMessagePipe();
 539         }
 540         return messagePipe;
 541     }
 542
 543     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 544         if (unidentifiedMessagePipe == null) {
 545             unidentifiedMessagePipe = getOrCreateMessageReceiver().createUnidentifiedMessagePipe();
 546         }
 547         return unidentifiedMessagePipe;
 548     }
 549
 550     private SignalServiceMessageSender createMessageSender() {
 551         final ClientZkProfileOperations clientZkProfileOperations = capabilities.isGv2() ? ClientZkOperations.create(
 552                 serviceConfiguration).getProfileOperations() : null;
 553         final ExecutorService executor = null;
 554         return new SignalServiceMessageSender(serviceConfiguration,
 555                 account.getUuid(),
 556                 account.getUsername(),
 557                 account.getPassword(),
 558                 account.getDeviceId(),
 559                 account.getSignalProtocolStore(),
 560                 userAgent,
 561                 account.isMultiDevice(),
 562                 Optional.fromNullable(messagePipe),
 563                 Optional.fromNullable(unidentifiedMessagePipe),
 564                 Optional.absent(),
 565                 clientZkProfileOperations,
 566                 executor,
 567                 ServiceConfig.MAX_ENVELOPE_SIZE);
 568     }
 569
 570     private SignalServiceProfile getEncryptedRecipientProfile(SignalServiceAddress address) throws IOException {
 571         return profileHelper.retrieveProfileSync(address, SignalServiceProfile.RequestType.PROFILE).getProfile();
 572     }
 573
 574     private SignalProfile getRecipientProfile(
 575             SignalServiceAddress address
 576     ) {
 577         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 578         if (profileEntry == null) {
 579             return null;
 580         }
 581         long now = new Date().getTime();
 582         // Profiles are cache for 24h before retrieving them again
 583         if (!profileEntry.isRequestPending() && (
 584                 profileEntry.getProfile() == null || now - profileEntry.getLastUpdateTimestamp() > 24 * 60 * 60 * 1000
 585         )) {
 586             ProfileKey profileKey = profileEntry.getProfileKey();
 587             profileEntry.setRequestPending(true);
 588             SignalProfile profile;
 589             try {
 590                 profile = retrieveRecipientProfile(address, profileKey);
 591             } catch (IOException e) {
 592                 System.err.println("Failed to retrieve profile, ignoring: " + e.getMessage());
 593                 profileEntry.setRequestPending(false);
 594                 return null;
 595             }
 596             profileEntry.setRequestPending(false);
 597             account.getProfileStore()
 598                     .updateProfile(address, profileKey, now, profile, profileEntry.getProfileKeyCredential());
 599             return profile;
 600         }
 601         return profileEntry.getProfile();
 602     }
 603
 604     private ProfileKeyCredential getRecipientProfileKeyCredential(SignalServiceAddress address) {
 605         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 606         if (profileEntry == null) {
 607             return null;
 608         }
 609         if (profileEntry.getProfileKeyCredential() == null) {
 610             ProfileAndCredential profileAndCredential;
 611             try {
 612                 profileAndCredential = profileHelper.retrieveProfileSync(address,
 613                         SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 614             } catch (IOException e) {
 615                 System.err.println("Failed to retrieve profile key credential, ignoring: " + e.getMessage());
 616                 return null;
 617             }
 618
 619             long now = new Date().getTime();
 620             final ProfileKeyCredential profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 621             final SignalProfile profile = decryptProfile(address,
 622                     profileEntry.getProfileKey(),
 623                     profileAndCredential.getProfile());
 624             account.getProfileStore()
 625                     .updateProfile(address, profileEntry.getProfileKey(), now, profile, profileKeyCredential);
 626             return profileKeyCredential;
 627         }
 628         return profileEntry.getProfileKeyCredential();
 629     }
 630
 631     private SignalProfile retrieveRecipientProfile(
 632             SignalServiceAddress address, ProfileKey profileKey
 633     ) throws IOException {
 634         final SignalServiceProfile encryptedProfile = getEncryptedRecipientProfile(address);
 635
 636         return decryptProfile(address, profileKey, encryptedProfile);
 637     }
 638
 639     private SignalProfile decryptProfile(
 640             final SignalServiceAddress address, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 641     ) {
 642         File avatarFile = null;
 643         try {
 644             avatarFile = encryptedProfile.getAvatar() == null
 645                     ? null
 646                     : retrieveProfileAvatar(address, encryptedProfile.getAvatar(), profileKey);
 647         } catch (Throwable e) {
 648             System.err.println("Failed to retrieve profile avatar, ignoring: " + e.getMessage());
 649         }
 650
 651         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 652         try {
 653             String name;
 654             try {
 655                 name = encryptedProfile.getName() == null
 656                         ? null
 657                         : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName())));
 658             } catch (IOException e) {
 659                 name = null;
 660             }
 661             String unidentifiedAccess;
 662             try {
 663                 unidentifiedAccess = encryptedProfile.getUnidentifiedAccess() == null
 664                         || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess()))
 665                         ? null
 666                         : encryptedProfile.getUnidentifiedAccess();
 667             } catch (IOException e) {
 668                 unidentifiedAccess = null;
 669             }
 670             return new SignalProfile(encryptedProfile.getIdentityKey(),
 671                     name,
 672                     avatarFile,
 673                     unidentifiedAccess,
 674                     encryptedProfile.isUnrestrictedUnidentifiedAccess(),
 675                     encryptedProfile.getCapabilities());
 676         } catch (InvalidCiphertextException e) {
 677             return null;
 678         }
 679     }
 680
 681     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 682         File file = getGroupAvatarFile(groupId);
 683         if (!file.exists()) {
 684             return Optional.absent();
 685         }
 686
 687         return Optional.of(Utils.createAttachment(file));
 688     }
 689
 690     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 691         File file = getContactAvatarFile(number);
 692         if (!file.exists()) {
 693             return Optional.absent();
 694         }
 695
 696         return Optional.of(Utils.createAttachment(file));
 697     }
 698
 699     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 700         GroupInfo g = account.getGroupStore().getGroup(groupId);
 701         if (g == null) {
 702             throw new GroupNotFoundException(groupId);
 703         }
 704         if (!g.isMember(account.getSelfAddress())) {
 705             throw new NotAGroupMemberException(groupId, g.getTitle());
 706         }
 707         return g;
 708     }
 709
 710     private GroupInfo getGroupForUpdating(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 711         GroupInfo g = account.getGroupStore().getGroup(groupId);
 712         if (g == null) {
 713             throw new GroupNotFoundException(groupId);
 714         }
 715         if (!g.isMember(account.getSelfAddress()) && !g.isPendingMember(account.getSelfAddress())) {
 716             throw new NotAGroupMemberException(groupId, g.getTitle());
 717         }
 718         return g;
 719     }
 720
 721     public List<GroupInfo> getGroups() {
 722         return account.getGroupStore().getGroups();
 723     }
 724
 725     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 726             SignalServiceDataMessage.Builder messageBuilder, byte[] groupId
 727     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 728         final GroupInfo g = getGroupForSending(groupId);
 729
 730         GroupUtils.setGroupContext(messageBuilder, g);
 731         messageBuilder.withExpiration(g.getMessageExpirationTime());
 732
 733         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 734     }
 735
 736     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 737             String messageText, List<String> attachments, byte[] groupId
 738     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 739         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 740                 .withBody(messageText);
 741         if (attachments != null) {
 742             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 743         }
 744
 745         return sendGroupMessage(messageBuilder, groupId);
 746     }
 747
 748     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 749             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, byte[] groupId
 750     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 751         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
 752                 remove,
 753                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 754                 targetSentTimestamp);
 755         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 756                 .withReaction(reaction);
 757
 758         return sendGroupMessage(messageBuilder, groupId);
 759     }
 760
 761     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 762
 763         SignalServiceDataMessage.Builder messageBuilder;
 764
 765         final GroupInfo g = getGroupForUpdating(groupId);
 766         if (g instanceof GroupInfoV1) {
 767             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
 768             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 769                     .withId(groupId)
 770                     .build();
 771             messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 772             groupInfoV1.removeMember(account.getSelfAddress());
 773             account.getGroupStore().updateGroup(groupInfoV1);
 774         } else {
 775             final GroupInfoV2 groupInfoV2 = (GroupInfoV2) g;
 776             final Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.leaveGroup(groupInfoV2);
 777             groupInfoV2.setGroup(groupGroupChangePair.first());
 778             messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 779             account.getGroupStore().updateGroup(groupInfoV2);
 780         }
 781
 782         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 783     }
 784
 785     private Pair<byte[], List<SendMessageResult>> sendUpdateGroupMessage(
 786             byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile
 787     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 788         GroupInfo g;
 789         SignalServiceDataMessage.Builder messageBuilder;
 790         if (groupId == null) {
 791             // Create new group
 792             GroupInfoV2 gv2 = groupHelper.createGroupV2(name, members, avatarFile);
 793             if (gv2 == null) {
 794                 GroupInfoV1 gv1 = new GroupInfoV1(KeyUtils.createGroupId());
 795                 gv1.addMembers(Collections.singleton(account.getSelfAddress()));
 796                 updateGroupV1(gv1, name, members, avatarFile);
 797                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 798                 g = gv1;
 799             } else {
 800                 messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 801                 g = gv2;
 802             }
 803         } else {
 804             GroupInfo group = getGroupForUpdating(groupId);
 805             if (group instanceof GroupInfoV2) {
 806                 final GroupInfoV2 groupInfoV2 = (GroupInfoV2) group;
 807
 808                 Pair<Long, List<SendMessageResult>> result = null;
 809                 if (groupInfoV2.isPendingMember(getSelfAddress())) {
 810                     Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.acceptInvite(groupInfoV2);
 811                     result = sendUpdateGroupMessage(groupInfoV2,
 812                             groupGroupChangePair.first(),
 813                             groupGroupChangePair.second());
 814                 }
 815
 816                 if (members != null) {
 817                     final Set<SignalServiceAddress> newMembers = new HashSet<>(members);
 818                     newMembers.removeAll(group.getMembers());
 819                     if (newMembers.size() > 0) {
 820                         Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2,
 821                                 newMembers);
 822                         result = sendUpdateGroupMessage(groupInfoV2,
 823                                 groupGroupChangePair.first(),
 824                                 groupGroupChangePair.second());
 825                     }
 826                 }
 827                 if (result == null || name != null || avatarFile != null) {
 828                     Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.updateGroupV2(groupInfoV2,
 829                             name,
 830                             avatarFile);
 831                     result = sendUpdateGroupMessage(groupInfoV2,
 832                             groupGroupChangePair.first(),
 833                             groupGroupChangePair.second());
 834                 }
 835
 836                 return new Pair<>(group.groupId, result.second());
 837             } else {
 838                 GroupInfoV1 gv1 = (GroupInfoV1) group;
 839                 updateGroupV1(gv1, name, members, avatarFile);
 840                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 841                 g = gv1;
 842             }
 843         }
 844
 845         account.getGroupStore().updateGroup(g);
 846
 847         final Pair<Long, List<SendMessageResult>> result = sendMessage(messageBuilder,
 848                 g.getMembersIncludingPendingWithout(account.getSelfAddress()));
 849         return new Pair<>(g.groupId, result.second());
 850     }
 851
 852     private Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 853             GroupInfoV2 group, DecryptedGroup newDecryptedGroup, GroupChange groupChange
 854     ) throws IOException {
 855         group.setGroup(newDecryptedGroup);
 856         final SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(group,
 857                 groupChange.toByteArray());
 858         account.getGroupStore().updateGroup(group);
 859         return sendMessage(messageBuilder, group.getMembersIncludingPendingWithout(account.getSelfAddress()));
 860     }
 861
 862     private void updateGroupV1(
 863             final GroupInfoV1 g,
 864             final String name,
 865             final Collection<SignalServiceAddress> members,
 866             final String avatarFile
 867     ) throws IOException {
 868         if (name != null) {
 869             g.name = name;
 870         }
 871
 872         if (members != null) {
 873             final Set<String> newE164Members = new HashSet<>();
 874             for (SignalServiceAddress member : members) {
 875                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 876                     continue;
 877                 }
 878                 newE164Members.add(member.getNumber().get());
 879             }
 880
 881             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 882             if (contacts.size() != newE164Members.size()) {
 883                 // Some of the new members are not registered on Signal
 884                 for (ContactTokenDetails contact : contacts) {
 885                     newE164Members.remove(contact.getNumber());
 886                 }
 887                 throw new IOException("Failed to add members "
 888                         + Util.join(", ", newE164Members)
 889                         + " to group: Not registered on Signal");
 890             }
 891
 892             g.addMembers(members);
 893         }
 894
 895         if (avatarFile != null) {
 896             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 897             File aFile = getGroupAvatarFile(g.groupId);
 898             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 899         }
 900     }
 901
 902     Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 903             byte[] groupId, SignalServiceAddress recipient
 904     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 905         GroupInfoV1 g;
 906         GroupInfo group = getGroupForSending(groupId);
 907         if (!(group instanceof GroupInfoV1)) {
 908             throw new RuntimeException("Received an invalid group request for a v2 group!");
 909         }
 910         g = (GroupInfoV1) group;
 911
 912         if (!g.isMember(recipient)) {
 913             throw new NotAGroupMemberException(groupId, g.name);
 914         }
 915
 916         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 917
 918         // Send group message only to the recipient who requested it
 919         return sendMessage(messageBuilder, Collections.singleton(recipient));
 920     }
 921
 922     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
 923         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 924                 .withId(g.groupId)
 925                 .withName(g.name)
 926                 .withMembers(new ArrayList<>(g.getMembers()));
 927
 928         File aFile = getGroupAvatarFile(g.groupId);
 929         if (aFile.exists()) {
 930             try {
 931                 group.withAvatar(Utils.createAttachment(aFile));
 932             } catch (IOException e) {
 933                 throw new AttachmentInvalidException(aFile.toString(), e);
 934             }
 935         }
 936
 937         return SignalServiceDataMessage.newBuilder()
 938                 .asGroupMessage(group.build())
 939                 .withExpiration(g.getMessageExpirationTime());
 940     }
 941
 942     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
 943         SignalServiceGroupV2.Builder group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
 944                 .withRevision(g.getGroup().getRevision())
 945                 .withSignedGroupChange(signedGroupChange);
 946         return SignalServiceDataMessage.newBuilder()
 947                 .asGroupMessage(group.build())
 948                 .withExpiration(g.getMessageExpirationTime());
 949     }
 950
 951     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
 952             byte[] groupId, SignalServiceAddress recipient
 953     ) throws IOException {
 954         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 955                 .withId(groupId);
 956
 957         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 958                 .asGroupMessage(group.build());
 959
 960         // Send group info request message to the recipient who sent us a message with this groupId
 961         return sendMessage(messageBuilder, Collections.singleton(recipient));
 962     }
 963
 964     void sendReceipt(
 965             SignalServiceAddress remoteAddress, long messageId
 966     ) throws IOException, UntrustedIdentityException {
 967         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 968                 Collections.singletonList(messageId),
 969                 System.currentTimeMillis());
 970
 971         createMessageSender().sendReceipt(remoteAddress,
 972                 unidentifiedAccessHelper.getAccessFor(remoteAddress),
 973                 receiptMessage);
 974     }
 975
 976     public Pair<Long, List<SendMessageResult>> sendMessage(
 977             String messageText, List<String> attachments, List<String> recipients
 978     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
 979         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 980                 .withBody(messageText);
 981         if (attachments != null) {
 982             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 983
 984             // Upload attachments here, so we only upload once even for multiple recipients
 985             SignalServiceMessageSender messageSender = createMessageSender();
 986             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 987             for (SignalServiceAttachment attachment : attachmentStreams) {
 988                 if (attachment.isStream()) {
 989                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 990                 } else if (attachment.isPointer()) {
 991                     attachmentPointers.add(attachment.asPointer());
 992                 }
 993             }
 994
 995             messageBuilder.withAttachments(attachmentPointers);
 996         }
 997         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
 998     }
 999
1000     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
1001             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
1002     ) throws IOException, InvalidNumberException {
1003         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
1004                 remove,
1005                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
1006                 targetSentTimestamp);
1007         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1008                 .withReaction(reaction);
1009         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
1010     }
1011
1012     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
1013         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
1014
1015         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
1016         try {
1017             return sendMessage(messageBuilder, signalServiceAddresses);
1018         } catch (Exception e) {
1019             for (SignalServiceAddress address : signalServiceAddresses) {
1020                 handleEndSession(address);
1021             }
1022             account.save();
1023             throw e;
1024         }
1025     }
1026
1027     public String getContactName(String number) throws InvalidNumberException {
1028         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
1029         if (contact == null) {
1030             return "";
1031         } else {
1032             return contact.name;
1033         }
1034     }
1035
1036     public void setContactName(String number, String name) throws InvalidNumberException {
1037         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1038         ContactInfo contact = account.getContactStore().getContact(address);
1039         if (contact == null) {
1040             contact = new ContactInfo(address);
1041         }
1042         contact.name = name;
1043         account.getContactStore().updateContact(contact);
1044         account.save();
1045     }
1046
1047     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
1048         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
1049     }
1050
1051     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
1052         ContactInfo contact = account.getContactStore().getContact(address);
1053         if (contact == null) {
1054             contact = new ContactInfo(address);
1055         }
1056         contact.blocked = blocked;
1057         account.getContactStore().updateContact(contact);
1058         account.save();
1059     }
1060
1061     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
1062         GroupInfo group = getGroup(groupId);
1063         if (group == null) {
1064             throw new GroupNotFoundException(groupId);
1065         }
1066
1067         group.setBlocked(blocked);
1068         account.getGroupStore().updateGroup(group);
1069         account.save();
1070     }
1071
1072     public Pair<byte[], List<SendMessageResult>> updateGroup(
1073             byte[] groupId, String name, List<String> members, String avatar
1074     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
1075         return sendUpdateGroupMessage(groupId,
1076                 name,
1077                 members == null ? null : getSignalServiceAddresses(members),
1078                 avatar);
1079     }
1080
1081     /**
1082      * Change the expiration timer for a contact
1083      */
1084     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
1085         ContactInfo contact = account.getContactStore().getContact(address);
1086         contact.messageExpirationTime = messageExpirationTimer;
1087         account.getContactStore().updateContact(contact);
1088         sendExpirationTimerUpdate(address);
1089         account.save();
1090     }
1091
1092     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
1093         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1094                 .asExpirationUpdate();
1095         sendMessage(messageBuilder, Collections.singleton(address));
1096     }
1097
1098     /**
1099      * Change the expiration timer for a contact
1100      */
1101     public void setExpirationTimer(
1102             String number, int messageExpirationTimer
1103     ) throws IOException, InvalidNumberException {
1104         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1105         setExpirationTimer(address, messageExpirationTimer);
1106     }
1107
1108     /**
1109      * Change the expiration timer for a group
1110      */
1111     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
1112         GroupInfo g = account.getGroupStore().getGroup(groupId);
1113         if (g instanceof GroupInfoV1) {
1114             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
1115             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1116             account.getGroupStore().updateGroup(groupInfoV1);
1117         } else {
1118             throw new RuntimeException("TODO Not implemented!");
1119         }
1120     }
1121
1122     /**
1123      * Upload the sticker pack from path.
1124      *
1125      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1126      * @return if successful, returns the URL to install the sticker pack in the signal app
1127      */
1128     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
1129         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
1130
1131         SignalServiceMessageSender messageSender = createMessageSender();
1132
1133         byte[] packKey = KeyUtils.createStickerUploadKey();
1134         String packId = messageSender.uploadStickerManifest(manifest, packKey);
1135
1136         Sticker sticker = new Sticker(Hex.fromStringCondensed(packId), packKey);
1137         account.getStickerStore().updateSticker(sticker);
1138         account.save();
1139
1140         try {
1141             return new URI("https",
1142                     "signal.art",
1143                     "/addstickers/",
1144                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1145                             Hex.toStringCondensed(packKey),
1146                             StandardCharsets.UTF_8)).toString();
1147         } catch (URISyntaxException e) {
1148             throw new AssertionError(e);
1149         }
1150     }
1151
1152     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(
1153             final String path
1154     ) throws IOException, StickerPackInvalidException {
1155         ZipFile zip = null;
1156         String rootPath = null;
1157
1158         final File file = new File(path);
1159         if (file.getName().endsWith(".zip")) {
1160             zip = new ZipFile(file);
1161         } else if (file.getName().equals("manifest.json")) {
1162             rootPath = file.getParent();
1163         } else {
1164             throw new StickerPackInvalidException("Could not find manifest.json");
1165         }
1166
1167         JsonStickerPack pack = parseStickerPack(rootPath, zip);
1168
1169         if (pack.stickers == null) {
1170             throw new StickerPackInvalidException("Must set a 'stickers' field.");
1171         }
1172
1173         if (pack.stickers.isEmpty()) {
1174             throw new StickerPackInvalidException("Must include stickers.");
1175         }
1176
1177         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
1178         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
1179             if (sticker.file == null) {
1180                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
1181             }
1182
1183             Pair<InputStream, Long> data;
1184             try {
1185                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
1186             } catch (IOException ignored) {
1187                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
1188             }
1189
1190             String contentType = Utils.getFileMimeType(new File(sticker.file), null);
1191             StickerInfo stickerInfo = new StickerInfo(data.first(),
1192                     data.second(),
1193                     Optional.fromNullable(sticker.emoji).or(""),
1194                     contentType);
1195             stickers.add(stickerInfo);
1196         }
1197
1198         StickerInfo cover = null;
1199         if (pack.cover != null) {
1200             if (pack.cover.file == null) {
1201                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
1202             }
1203
1204             Pair<InputStream, Long> data;
1205             try {
1206                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
1207             } catch (IOException ignored) {
1208                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
1209             }
1210
1211             String contentType = Utils.getFileMimeType(new File(pack.cover.file), null);
1212             cover = new StickerInfo(data.first(),
1213                     data.second(),
1214                     Optional.fromNullable(pack.cover.emoji).or(""),
1215                     contentType);
1216         }
1217
1218         return new SignalServiceStickerManifestUpload(pack.title, pack.author, cover, stickers);
1219     }
1220
1221     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
1222         InputStream inputStream;
1223         if (zip != null) {
1224             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
1225         } else {
1226             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
1227         }
1228         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
1229     }
1230
1231     private static Pair<InputStream, Long> getInputStreamAndLength(
1232             final String rootPath, final ZipFile zip, final String subfile
1233     ) throws IOException {
1234         if (zip != null) {
1235             final ZipEntry entry = zip.getEntry(subfile);
1236             return new Pair<>(zip.getInputStream(entry), entry.getSize());
1237         } else {
1238             final File file = new File(rootPath, subfile);
1239             return new Pair<>(new FileInputStream(file), file.length());
1240         }
1241     }
1242
1243     void requestSyncGroups() throws IOException {
1244         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1245                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1246                 .build();
1247         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1248         try {
1249             sendSyncMessage(message);
1250         } catch (UntrustedIdentityException e) {
1251             e.printStackTrace();
1252         }
1253     }
1254
1255     void requestSyncContacts() throws IOException {
1256         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1257                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1258                 .build();
1259         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1260         try {
1261             sendSyncMessage(message);
1262         } catch (UntrustedIdentityException e) {
1263             e.printStackTrace();
1264         }
1265     }
1266
1267     void requestSyncBlocked() throws IOException {
1268         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1269                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1270                 .build();
1271         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1272         try {
1273             sendSyncMessage(message);
1274         } catch (UntrustedIdentityException e) {
1275             e.printStackTrace();
1276         }
1277     }
1278
1279     void requestSyncConfiguration() throws IOException {
1280         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1281                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1282                 .build();
1283         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1284         try {
1285             sendSyncMessage(message);
1286         } catch (UntrustedIdentityException e) {
1287             e.printStackTrace();
1288         }
1289     }
1290
1291     private byte[] getSenderCertificate() {
1292         // TODO support UUID capable sender certificates
1293         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1294         byte[] certificate;
1295         try {
1296             certificate = accountManager.getSenderCertificate();
1297         } catch (IOException e) {
1298             System.err.println("Failed to get sender certificate: " + e);
1299             return null;
1300         }
1301         // TODO cache for a day
1302         return certificate;
1303     }
1304
1305     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1306         SignalServiceMessageSender messageSender = createMessageSender();
1307         try {
1308             messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1309         } catch (UntrustedIdentityException e) {
1310             account.getSignalProtocolStore()
1311                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1312                             e.getIdentityKey(),
1313                             TrustLevel.UNTRUSTED);
1314             throw e;
1315         }
1316     }
1317
1318     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1319         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1320         final Set<SignalServiceAddress> missingUuids = new HashSet<>();
1321
1322         for (String number : numbers) {
1323             final SignalServiceAddress resolvedAddress = canonicalizeAndResolveSignalServiceAddress(number);
1324             if (resolvedAddress.getUuid().isPresent()) {
1325                 signalServiceAddresses.add(resolvedAddress);
1326             } else {
1327                 missingUuids.add(resolvedAddress);
1328             }
1329         }
1330
1331         Map<String, UUID> registeredUsers;
1332         try {
1333             registeredUsers = accountManager.getRegisteredUsers(getIasKeyStore(),
1334                     missingUuids.stream().map(a -> a.getNumber().get()).collect(Collectors.toSet()),
1335                     CDS_MRENCLAVE);
1336         } catch (IOException | Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException e) {
1337             System.err.println("Failed to resolve uuids from server: " + e.getMessage());
1338             registeredUsers = new HashMap<>();
1339         }
1340
1341         for (SignalServiceAddress address : missingUuids) {
1342             final String number = address.getNumber().get();
1343             if (registeredUsers.containsKey(number)) {
1344                 final SignalServiceAddress newAddress = resolveSignalServiceAddress(new SignalServiceAddress(
1345                         registeredUsers.get(number),
1346                         number));
1347                 signalServiceAddresses.add(newAddress);
1348             } else {
1349                 signalServiceAddresses.add(address);
1350             }
1351         }
1352
1353         return signalServiceAddresses;
1354     }
1355
1356     private Pair<Long, List<SendMessageResult>> sendMessage(
1357             SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients
1358     ) throws IOException {
1359         recipients = recipients.stream().map(this::resolveSignalServiceAddress).collect(Collectors.toSet());
1360         final long timestamp = System.currentTimeMillis();
1361         messageBuilder.withTimestamp(timestamp);
1362         getOrCreateMessagePipe();
1363         getOrCreateUnidentifiedMessagePipe();
1364         SignalServiceDataMessage message = null;
1365         try {
1366             message = messageBuilder.build();
1367             if (message.getGroupContext().isPresent()) {
1368                 try {
1369                     SignalServiceMessageSender messageSender = createMessageSender();
1370                     final boolean isRecipientUpdate = false;
1371                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients),
1372                             unidentifiedAccessHelper.getAccessFor(recipients),
1373                             isRecipientUpdate,
1374                             message);
1375                     for (SendMessageResult r : result) {
1376                         if (r.getIdentityFailure() != null) {
1377                             account.getSignalProtocolStore()
1378                                     .saveIdentity(r.getAddress(),
1379                                             r.getIdentityFailure().getIdentityKey(),
1380                                             TrustLevel.UNTRUSTED);
1381                         }
1382                     }
1383                     return new Pair<>(timestamp, result);
1384                 } catch (UntrustedIdentityException e) {
1385                     account.getSignalProtocolStore()
1386                             .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1387                                     e.getIdentityKey(),
1388                                     TrustLevel.UNTRUSTED);
1389                     return new Pair<>(timestamp, Collections.emptyList());
1390                 }
1391             } else {
1392                 // Send to all individually, so sync messages are sent correctly
1393                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1394                 for (SignalServiceAddress address : recipients) {
1395                     ContactInfo contact = account.getContactStore().getContact(address);
1396                     if (contact != null) {
1397                         messageBuilder.withExpiration(contact.messageExpirationTime);
1398                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1399                     } else {
1400                         messageBuilder.withExpiration(0);
1401                         messageBuilder.withProfileKey(null);
1402                     }
1403                     message = messageBuilder.build();
1404                     if (address.matches(account.getSelfAddress())) {
1405                         results.add(sendSelfMessage(message));
1406                     } else {
1407                         results.add(sendMessage(address, message));
1408                     }
1409                 }
1410                 return new Pair<>(timestamp, results);
1411             }
1412         } finally {
1413             if (message != null && message.isEndSession()) {
1414                 for (SignalServiceAddress recipient : recipients) {
1415                     handleEndSession(recipient);
1416                 }
1417             }
1418             account.save();
1419         }
1420     }
1421
1422     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1423         SignalServiceMessageSender messageSender = createMessageSender();
1424
1425         SignalServiceAddress recipient = account.getSelfAddress();
1426
1427         final Optional<UnidentifiedAccessPair> unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipient);
1428         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1429                 message.getTimestamp(),
1430                 message,
1431                 message.getExpiresInSeconds(),
1432                 Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1433                 false);
1434         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1435
1436         try {
1437             long startTime = System.currentTimeMillis();
1438             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1439             return SendMessageResult.success(recipient,
1440                     unidentifiedAccess.isPresent(),
1441                     false,
1442                     System.currentTimeMillis() - startTime);
1443         } catch (UntrustedIdentityException e) {
1444             account.getSignalProtocolStore()
1445                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1446                             e.getIdentityKey(),
1447                             TrustLevel.UNTRUSTED);
1448             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1449         }
1450     }
1451
1452     private SendMessageResult sendMessage(
1453             SignalServiceAddress address, SignalServiceDataMessage message
1454     ) throws IOException {
1455         SignalServiceMessageSender messageSender = createMessageSender();
1456
1457         try {
1458             return messageSender.sendMessage(address, unidentifiedAccessHelper.getAccessFor(address), message);
1459         } catch (UntrustedIdentityException e) {
1460             account.getSignalProtocolStore()
1461                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1462                             e.getIdentityKey(),
1463                             TrustLevel.UNTRUSTED);
1464             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1465         }
1466     }
1467
1468     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1469         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(),
1470                 account.getSignalProtocolStore(),
1471                 Utils.getCertificateValidator());
1472         try {
1473             return cipher.decrypt(envelope);
1474         } catch (ProtocolUntrustedIdentityException e) {
1475             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1476                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e
1477                         .getCause();
1478                 account.getSignalProtocolStore()
1479                         .saveIdentity(resolveSignalServiceAddress(identityException.getName()),
1480                                 identityException.getUntrustedIdentity(),
1481                                 TrustLevel.UNTRUSTED);
1482                 throw identityException;
1483             }
1484             throw new AssertionError(e);
1485         }
1486     }
1487
1488     private void handleEndSession(SignalServiceAddress source) {
1489         account.getSignalProtocolStore().deleteAllSessions(source);
1490     }
1491
1492     private static int currentTimeDays() {
1493         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
1494     }
1495
1496     private GroupsV2AuthorizationString getGroupAuthForToday(
1497             final GroupSecretParams groupSecretParams
1498     ) throws IOException {
1499         final int today = currentTimeDays();
1500         // Returns credentials for the next 7 days
1501         final HashMap<Integer, AuthCredentialResponse> credentials = groupsV2Api.getCredentials(today);
1502         // TODO cache credentials until they expire
1503         AuthCredentialResponse authCredentialResponse = credentials.get(today);
1504         try {
1505             return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
1506                     today,
1507                     groupSecretParams,
1508                     authCredentialResponse);
1509         } catch (VerificationFailedException e) {
1510             throw new IOException(e);
1511         }
1512     }
1513
1514     private List<HandleAction> handleSignalServiceDataMessage(
1515             SignalServiceDataMessage message,
1516             boolean isSync,
1517             SignalServiceAddress source,
1518             SignalServiceAddress destination,
1519             boolean ignoreAttachments
1520     ) {
1521         List<HandleAction> actions = new ArrayList<>();
1522         if (message.getGroupContext().isPresent()) {
1523             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1524                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1525                 GroupInfo group = account.getGroupStore().getGroupByV1Id(groupInfo.getGroupId());
1526                 if (group == null || group instanceof GroupInfoV1) {
1527                     GroupInfoV1 groupV1 = (GroupInfoV1) group;
1528                     switch (groupInfo.getType()) {
1529                         case UPDATE: {
1530                             if (groupV1 == null) {
1531                                 groupV1 = new GroupInfoV1(groupInfo.getGroupId());
1532                             }
1533
1534                             if (groupInfo.getAvatar().isPresent()) {
1535                                 SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1536                                 if (avatar.isPointer()) {
1537                                     try {
1538                                         retrieveGroupAvatarAttachment(avatar.asPointer(), groupV1.groupId);
1539                                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1540                                         System.err.println("Failed to retrieve group avatar (" + avatar.asPointer()
1541                                                 .getRemoteId() + "): " + e.getMessage());
1542                                     }
1543                                 }
1544                             }
1545
1546                             if (groupInfo.getName().isPresent()) {
1547                                 groupV1.name = groupInfo.getName().get();
1548                             }
1549
1550                             if (groupInfo.getMembers().isPresent()) {
1551                                 groupV1.addMembers(groupInfo.getMembers()
1552                                         .get()
1553                                         .stream()
1554                                         .map(this::resolveSignalServiceAddress)
1555                                         .collect(Collectors.toSet()));
1556                             }
1557
1558                             account.getGroupStore().updateGroup(groupV1);
1559                             break;
1560                         }
1561                         case DELIVER:
1562                             if (groupV1 == null && !isSync) {
1563                                 actions.add(new SendGroupInfoRequestAction(source, groupInfo.getGroupId()));
1564                             }
1565                             break;
1566                         case QUIT: {
1567                             if (groupV1 != null) {
1568                                 groupV1.removeMember(source);
1569                                 account.getGroupStore().updateGroup(groupV1);
1570                             }
1571                             break;
1572                         }
1573                         case REQUEST_INFO:
1574                             if (groupV1 != null && !isSync) {
1575                                 actions.add(new SendGroupUpdateAction(source, groupV1.groupId));
1576                             }
1577                             break;
1578                     }
1579                 } else {
1580                     // Received a group v1 message for a v2 group
1581                 }
1582             }
1583             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1584                 final SignalServiceGroupV2 groupContext = message.getGroupContext().get().getGroupV2().get();
1585                 final GroupMasterKey groupMasterKey = groupContext.getMasterKey();
1586
1587                 final GroupSecretParams groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1588
1589                 byte[] groupId = groupSecretParams.getPublicParams().getGroupIdentifier().serialize();
1590                 GroupInfo groupInfo = account.getGroupStore().getGroupByV2Id(groupId);
1591                 if (groupInfo instanceof GroupInfoV1) {
1592                     // Received a v2 group message for a v2 group, we need to locally migrate the group
1593                     account.getGroupStore().deleteGroup(groupInfo.groupId);
1594                     GroupInfoV2 groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1595                     groupInfoV2.setGroup(getDecryptedGroup(groupSecretParams));
1596                     account.getGroupStore().updateGroup(groupInfoV2);
1597                     System.err.println("Locally migrated group "
1598                             + Base64.encodeBytes(groupInfo.groupId)
1599                             + " to group v2, id: "
1600                             + Base64.encodeBytes(groupInfoV2.groupId)
1601                             + " !!!");
1602                 } else if (groupInfo == null || groupInfo instanceof GroupInfoV2) {
1603                     GroupInfoV2 groupInfoV2 = groupInfo == null
1604                             ? new GroupInfoV2(groupId, groupMasterKey)
1605                             : (GroupInfoV2) groupInfo;
1606
1607                     if (groupInfoV2.getGroup() == null
1608                             || groupInfoV2.getGroup().getRevision() < groupContext.getRevision()) {
1609                         DecryptedGroup group = null;
1610                         if (groupContext.hasSignedGroupChange()
1611                                 && groupInfoV2.getGroup() != null
1612                                 && groupInfoV2.getGroup().getRevision() + 1 == groupContext.getRevision()) {
1613                             group = groupHelper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(),
1614                                     groupContext.getSignedGroupChange(),
1615                                     groupMasterKey);
1616                             if (group != null) {
1617                                 storeProfileKeysFromMembers(group);
1618                             }
1619                         }
1620                         if (group == null) {
1621                             group = getDecryptedGroup(groupSecretParams);
1622                         }
1623                         groupInfoV2.setGroup(group);
1624                         account.getGroupStore().updateGroup(groupInfoV2);
1625                     }
1626                 }
1627             }
1628         }
1629         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1630         if (message.isEndSession()) {
1631             handleEndSession(conversationPartnerAddress);
1632         }
1633         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1634             if (message.getGroupContext().isPresent()) {
1635                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1636                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1637                     GroupInfoV1 group = account.getGroupStore().getOrCreateGroupV1(groupInfo.getGroupId());
1638                     if (group != null) {
1639                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1640                             group.messageExpirationTime = message.getExpiresInSeconds();
1641                             account.getGroupStore().updateGroup(group);
1642                         }
1643                     }
1644                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1645                     // disappearing message timer already stored in the DecryptedGroup
1646                 }
1647             } else {
1648                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1649                 if (contact == null) {
1650                     contact = new ContactInfo(conversationPartnerAddress);
1651                 }
1652                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1653                     contact.messageExpirationTime = message.getExpiresInSeconds();
1654                     account.getContactStore().updateContact(contact);
1655                 }
1656             }
1657         }
1658         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1659             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1660                 if (attachment.isPointer()) {
1661                     try {
1662                         retrieveAttachment(attachment.asPointer());
1663                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1664                         System.err.println("Failed to retrieve attachment ("
1665                                 + attachment.asPointer().getRemoteId()
1666                                 + "): "
1667                                 + e.getMessage());
1668                     }
1669                 }
1670             }
1671         }
1672         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1673             final ProfileKey profileKey;
1674             try {
1675                 profileKey = new ProfileKey(message.getProfileKey().get());
1676             } catch (InvalidInputException e) {
1677                 throw new AssertionError(e);
1678             }
1679             if (source.matches(account.getSelfAddress())) {
1680                 this.account.setProfileKey(profileKey);
1681             }
1682             this.account.getProfileStore().storeProfileKey(source, profileKey);
1683         }
1684         if (message.getPreviews().isPresent()) {
1685             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1686             for (SignalServiceDataMessage.Preview preview : previews) {
1687                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1688                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1689                     try {
1690                         retrieveAttachment(attachment);
1691                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1692                         System.err.println("Failed to retrieve attachment ("
1693                                 + attachment.getRemoteId()
1694                                 + "): "
1695                                 + e.getMessage());
1696                     }
1697                 }
1698             }
1699         }
1700         if (message.getSticker().isPresent()) {
1701             final SignalServiceDataMessage.Sticker messageSticker = message.getSticker().get();
1702             Sticker sticker = account.getStickerStore().getSticker(messageSticker.getPackId());
1703             if (sticker == null) {
1704                 sticker = new Sticker(messageSticker.getPackId(), messageSticker.getPackKey());
1705                 account.getStickerStore().updateSticker(sticker);
1706             }
1707         }
1708         return actions;
1709     }
1710
1711     private DecryptedGroup getDecryptedGroup(final GroupSecretParams groupSecretParams) {
1712         try {
1713             final GroupsV2AuthorizationString groupsV2AuthorizationString = getGroupAuthForToday(groupSecretParams);
1714             DecryptedGroup group = groupsV2Api.getGroup(groupSecretParams, groupsV2AuthorizationString);
1715             storeProfileKeysFromMembers(group);
1716             return group;
1717         } catch (IOException | VerificationFailedException | InvalidGroupStateException e) {
1718             System.err.println("Failed to retrieve Group V2 info, ignoring ...");
1719             return null;
1720         }
1721     }
1722
1723     private void storeProfileKeysFromMembers(final DecryptedGroup group) {
1724         for (DecryptedMember member : group.getMembersList()) {
1725             final SignalServiceAddress address = resolveSignalServiceAddress(new SignalServiceAddress(UuidUtil.parseOrThrow(
1726                     member.getUuid().toByteArray()), null));
1727             try {
1728                 account.getProfileStore()
1729                         .storeProfileKey(address, new ProfileKey(member.getProfileKey().toByteArray()));
1730             } catch (InvalidInputException ignored) {
1731             }
1732         }
1733     }
1734
1735     private void retryFailedReceivedMessages(
1736             ReceiveMessageHandler handler, boolean ignoreAttachments
1737     ) {
1738         final File cachePath = new File(getMessageCachePath());
1739         if (!cachePath.exists()) {
1740             return;
1741         }
1742         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1743             if (!dir.isDirectory()) {
1744                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1745                 continue;
1746             }
1747
1748             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1749                 if (!fileEntry.isFile()) {
1750                     continue;
1751                 }
1752                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1753             }
1754             // Try to delete directory if empty
1755             dir.delete();
1756         }
1757     }
1758
1759     private void retryFailedReceivedMessage(
1760             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry
1761     ) {
1762         SignalServiceEnvelope envelope;
1763         try {
1764             envelope = Utils.loadEnvelope(fileEntry);
1765             if (envelope == null) {
1766                 return;
1767             }
1768         } catch (IOException e) {
1769             e.printStackTrace();
1770             return;
1771         }
1772         SignalServiceContent content = null;
1773         if (!envelope.isReceipt()) {
1774             try {
1775                 content = decryptMessage(envelope);
1776             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1777                 return;
1778             } catch (Exception er) {
1779                 // All other errors are not recoverable, so delete the cached message
1780                 try {
1781                     Files.delete(fileEntry.toPath());
1782                 } catch (IOException e) {
1783                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1784                 }
1785                 return;
1786             }
1787             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1788             for (HandleAction action : actions) {
1789                 try {
1790                     action.execute(this);
1791                 } catch (Throwable e) {
1792                     e.printStackTrace();
1793                 }
1794             }
1795         }
1796         account.save();
1797         handler.handleMessage(envelope, content, null);
1798         try {
1799             Files.delete(fileEntry.toPath());
1800         } catch (IOException e) {
1801             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1802         }
1803     }
1804
1805     public void receiveMessages(
1806             long timeout,
1807             TimeUnit unit,
1808             boolean returnOnTimeout,
1809             boolean ignoreAttachments,
1810             ReceiveMessageHandler handler
1811     ) throws IOException {
1812         retryFailedReceivedMessages(handler, ignoreAttachments);
1813
1814         Set<HandleAction> queuedActions = null;
1815
1816         getOrCreateMessagePipe();
1817
1818         boolean hasCaughtUpWithOldMessages = false;
1819
1820         while (true) {
1821             SignalServiceEnvelope envelope;
1822             SignalServiceContent content = null;
1823             Exception exception = null;
1824             final long now = new Date().getTime();
1825             try {
1826                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1827                     // store message on disk, before acknowledging receipt to the server
1828                     try {
1829                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1830                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1831                         Utils.storeEnvelope(envelope1, cacheFile);
1832                     } catch (IOException e) {
1833                         System.err.println("Failed to store encrypted message in disk cache, ignoring: "
1834                                 + e.getMessage());
1835                     }
1836                 });
1837                 if (result.isPresent()) {
1838                     envelope = result.get();
1839                 } else {
1840                     // Received indicator that server queue is empty
1841                     hasCaughtUpWithOldMessages = true;
1842
1843                     if (queuedActions != null) {
1844                         for (HandleAction action : queuedActions) {
1845                             try {
1846                                 action.execute(this);
1847                             } catch (Throwable e) {
1848                                 e.printStackTrace();
1849                             }
1850                         }
1851                         account.save();
1852                         queuedActions.clear();
1853                         queuedActions = null;
1854                     }
1855
1856                     // Continue to wait another timeout for new messages
1857                     continue;
1858                 }
1859             } catch (TimeoutException e) {
1860                 if (returnOnTimeout) return;
1861                 continue;
1862             } catch (InvalidVersionException e) {
1863                 System.err.println("Ignoring error: " + e.getMessage());
1864                 continue;
1865             }
1866
1867             if (envelope.hasSource()) {
1868                 // Store uuid if we don't have it already
1869                 SignalServiceAddress source = envelope.getSourceAddress();
1870                 resolveSignalServiceAddress(source);
1871             }
1872             if (!envelope.isReceipt()) {
1873                 try {
1874                     content = decryptMessage(envelope);
1875                 } catch (Exception e) {
1876                     exception = e;
1877                 }
1878                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1879                 if (hasCaughtUpWithOldMessages) {
1880                     for (HandleAction action : actions) {
1881                         try {
1882                             action.execute(this);
1883                         } catch (Throwable e) {
1884                             e.printStackTrace();
1885                         }
1886                     }
1887                 } else {
1888                     if (queuedActions == null) {
1889                         queuedActions = new HashSet<>();
1890                     }
1891                     queuedActions.addAll(actions);
1892                 }
1893             }
1894             account.save();
1895             if (!isMessageBlocked(envelope, content)) {
1896                 handler.handleMessage(envelope, content, exception);
1897             }
1898             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1899                 File cacheFile = null;
1900                 try {
1901                     String source = envelope.getSourceE164().isPresent() ? envelope.getSourceE164().get() : "";
1902                     cacheFile = getMessageCacheFile(source, now, envelope.getTimestamp());
1903                     Files.delete(cacheFile.toPath());
1904                     // Try to delete directory if empty
1905                     new File(getMessageCachePath()).delete();
1906                 } catch (IOException e) {
1907                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1908                 }
1909             }
1910         }
1911     }
1912
1913     private boolean isMessageBlocked(
1914             SignalServiceEnvelope envelope, SignalServiceContent content
1915     ) {
1916         SignalServiceAddress source;
1917         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1918             source = envelope.getSourceAddress();
1919         } else if (content != null) {
1920             source = content.getSender();
1921         } else {
1922             return false;
1923         }
1924         ContactInfo sourceContact = account.getContactStore().getContact(source);
1925         if (sourceContact != null && sourceContact.blocked) {
1926             return true;
1927         }
1928
1929         if (content != null && content.getDataMessage().isPresent()) {
1930             SignalServiceDataMessage message = content.getDataMessage().get();
1931             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1932                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1933                 GroupInfo group = getGroup(groupInfo.getGroupId());
1934                 return groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.isBlocked();
1935             }
1936         }
1937         return false;
1938     }
1939
1940     private List<HandleAction> handleMessage(
1941             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
1942     ) {
1943         List<HandleAction> actions = new ArrayList<>();
1944         if (content != null) {
1945             final SignalServiceAddress sender;
1946             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1947                 sender = envelope.getSourceAddress();
1948             } else {
1949                 sender = content.getSender();
1950             }
1951             // Store uuid if we don't have it already
1952             resolveSignalServiceAddress(sender);
1953
1954             if (content.getDataMessage().isPresent()) {
1955                 SignalServiceDataMessage message = content.getDataMessage().get();
1956
1957                 if (content.isNeedsReceipt()) {
1958                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1959                 }
1960
1961                 actions.addAll(handleSignalServiceDataMessage(message,
1962                         false,
1963                         sender,
1964                         account.getSelfAddress(),
1965                         ignoreAttachments));
1966             }
1967             if (content.getSyncMessage().isPresent()) {
1968                 account.setMultiDevice(true);
1969                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1970                 if (syncMessage.getSent().isPresent()) {
1971                     SentTranscriptMessage message = syncMessage.getSent().get();
1972                     final SignalServiceAddress destination = message.getDestination().orNull();
1973                     if (destination != null) {
1974                         actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
1975                                 true,
1976                                 sender,
1977                                 destination,
1978                                 ignoreAttachments));
1979                     }
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().getOrCreateGroupV1(g.getId());
2005                                 if (syncGroup != null) {
2006                                     if (g.getName().isPresent()) {
2007                                         syncGroup.name = g.getName().get();
2008                                     }
2009                                     syncGroup.addMembers(g.getMembers()
2010                                             .stream()
2011                                             .map(this::resolveSignalServiceAddress)
2012                                             .collect(Collectors.toSet()));
2013                                     if (!g.isActive()) {
2014                                         syncGroup.removeMember(account.getSelfAddress());
2015                                     } else {
2016                                         // Add ourself to the member set as it's marked as active
2017                                         syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
2018                                     }
2019                                     syncGroup.blocked = g.isBlocked();
2020                                     if (g.getColor().isPresent()) {
2021                                         syncGroup.color = g.getColor().get();
2022                                     }
2023
2024                                     if (g.getAvatar().isPresent()) {
2025                                         retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
2026                                     }
2027                                     syncGroup.inboxPosition = g.getInboxPosition().orNull();
2028                                     syncGroup.archived = g.isArchived();
2029                                     account.getGroupStore().updateGroup(syncGroup);
2030                                 }
2031                             }
2032                         }
2033                     } catch (Exception e) {
2034                         e.printStackTrace();
2035                     } finally {
2036                         if (tmpFile != null) {
2037                             try {
2038                                 Files.delete(tmpFile.toPath());
2039                             } catch (IOException e) {
2040                                 System.err.println("Failed to delete received groups temp file “"
2041                                         + tmpFile
2042                                         + "”: "
2043                                         + e.getMessage());
2044                             }
2045                         }
2046                     }
2047                 }
2048                 if (syncMessage.getBlockedList().isPresent()) {
2049                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
2050                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
2051                         setContactBlocked(resolveSignalServiceAddress(address), true);
2052                     }
2053                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
2054                         try {
2055                             setGroupBlocked(groupId, true);
2056                         } catch (GroupNotFoundException e) {
2057                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: "
2058                                     + Base64.encodeBytes(groupId));
2059                         }
2060                     }
2061                 }
2062                 if (syncMessage.getContacts().isPresent()) {
2063                     File tmpFile = null;
2064                     try {
2065                         tmpFile = IOUtils.createTempFile();
2066                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
2067                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
2068                                 .asPointer(), tmpFile)) {
2069                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
2070                             if (contactsMessage.isComplete()) {
2071                                 account.getContactStore().clear();
2072                             }
2073                             DeviceContact c;
2074                             while ((c = s.read()) != null) {
2075                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
2076                                     account.setProfileKey(c.getProfileKey().get());
2077                                 }
2078                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
2079                                 ContactInfo contact = account.getContactStore().getContact(address);
2080                                 if (contact == null) {
2081                                     contact = new ContactInfo(address);
2082                                 }
2083                                 if (c.getName().isPresent()) {
2084                                     contact.name = c.getName().get();
2085                                 }
2086                                 if (c.getColor().isPresent()) {
2087                                     contact.color = c.getColor().get();
2088                                 }
2089                                 if (c.getProfileKey().isPresent()) {
2090                                     account.getProfileStore().storeProfileKey(address, c.getProfileKey().get());
2091                                 }
2092                                 if (c.getVerified().isPresent()) {
2093                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
2094                                     account.getSignalProtocolStore()
2095                                             .setIdentityTrustLevel(verifiedMessage.getDestination(),
2096                                                     verifiedMessage.getIdentityKey(),
2097                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2098                                 }
2099                                 if (c.getExpirationTimer().isPresent()) {
2100                                     contact.messageExpirationTime = c.getExpirationTimer().get();
2101                                 }
2102                                 contact.blocked = c.isBlocked();
2103                                 contact.inboxPosition = c.getInboxPosition().orNull();
2104                                 contact.archived = c.isArchived();
2105                                 account.getContactStore().updateContact(contact);
2106
2107                                 if (c.getAvatar().isPresent()) {
2108                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
2109                                 }
2110                             }
2111                         }
2112                     } catch (Exception e) {
2113                         e.printStackTrace();
2114                     } finally {
2115                         if (tmpFile != null) {
2116                             try {
2117                                 Files.delete(tmpFile.toPath());
2118                             } catch (IOException e) {
2119                                 System.err.println("Failed to delete received contacts temp file “"
2120                                         + tmpFile
2121                                         + "”: "
2122                                         + e.getMessage());
2123                             }
2124                         }
2125                     }
2126                 }
2127                 if (syncMessage.getVerified().isPresent()) {
2128                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
2129                     account.getSignalProtocolStore()
2130                             .setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()),
2131                                     verifiedMessage.getIdentityKey(),
2132                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2133                 }
2134                 if (syncMessage.getStickerPackOperations().isPresent()) {
2135                     final List<StickerPackOperationMessage> stickerPackOperationMessages = syncMessage.getStickerPackOperations()
2136                             .get();
2137                     for (StickerPackOperationMessage m : stickerPackOperationMessages) {
2138                         if (!m.getPackId().isPresent()) {
2139                             continue;
2140                         }
2141                         Sticker sticker = account.getStickerStore().getSticker(m.getPackId().get());
2142                         if (sticker == null) {
2143                             if (!m.getPackKey().isPresent()) {
2144                                 continue;
2145                             }
2146                             sticker = new Sticker(m.getPackId().get(), m.getPackKey().get());
2147                         }
2148                         sticker.setInstalled(!m.getType().isPresent()
2149                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2150                         account.getStickerStore().updateSticker(sticker);
2151                     }
2152                 }
2153                 if (syncMessage.getConfiguration().isPresent()) {
2154                     // TODO
2155                 }
2156             }
2157         }
2158         return actions;
2159     }
2160
2161     private File getContactAvatarFile(String number) {
2162         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
2163     }
2164
2165     private File retrieveContactAvatarAttachment(
2166             SignalServiceAttachment attachment, String number
2167     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2168         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2169         if (attachment.isPointer()) {
2170             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2171             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
2172         } else {
2173             SignalServiceAttachmentStream stream = attachment.asStream();
2174             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
2175         }
2176     }
2177
2178     private File getGroupAvatarFile(byte[] groupId) {
2179         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
2180     }
2181
2182     private File retrieveGroupAvatarAttachment(
2183             SignalServiceAttachment attachment, byte[] groupId
2184     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2185         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2186         if (attachment.isPointer()) {
2187             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2188             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
2189         } else {
2190             SignalServiceAttachmentStream stream = attachment.asStream();
2191             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
2192         }
2193     }
2194
2195     private File getProfileAvatarFile(SignalServiceAddress address) {
2196         return new File(pathConfig.getAvatarsPath(), "profile-" + address.getLegacyIdentifier());
2197     }
2198
2199     private File retrieveProfileAvatar(
2200             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2201     ) throws IOException {
2202         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2203         SignalServiceMessageReceiver receiver = getOrCreateMessageReceiver();
2204         File outputFile = getProfileAvatarFile(address);
2205
2206         File tmpFile = IOUtils.createTempFile();
2207         try (InputStream input = receiver.retrieveProfileAvatar(avatarPath,
2208                 tmpFile,
2209                 profileKey,
2210                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2211             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2212             IOUtils.copyStreamToFile(input, outputFile, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2213         } finally {
2214             try {
2215                 Files.delete(tmpFile.toPath());
2216             } catch (IOException e) {
2217                 System.err.println("Failed to delete received avatar temp file “" + tmpFile + "”: " + e.getMessage());
2218             }
2219         }
2220         return outputFile;
2221     }
2222
2223     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2224         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
2225     }
2226
2227     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
2228         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
2229         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
2230     }
2231
2232     private File retrieveAttachment(
2233             SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview
2234     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2235         if (storePreview && pointer.getPreview().isPresent()) {
2236             File previewFile = new File(outputFile + ".preview");
2237             try (OutputStream output = new FileOutputStream(previewFile)) {
2238                 byte[] preview = pointer.getPreview().get();
2239                 output.write(preview, 0, preview.length);
2240             } catch (FileNotFoundException e) {
2241                 e.printStackTrace();
2242                 return null;
2243             }
2244         }
2245
2246         final SignalServiceMessageReceiver messageReceiver = getOrCreateMessageReceiver();
2247
2248         File tmpFile = IOUtils.createTempFile();
2249         try (InputStream input = messageReceiver.retrieveAttachment(pointer,
2250                 tmpFile,
2251                 ServiceConfig.MAX_ATTACHMENT_SIZE)) {
2252             IOUtils.copyStreamToFile(input, outputFile);
2253         } finally {
2254             try {
2255                 Files.delete(tmpFile.toPath());
2256             } catch (IOException e) {
2257                 System.err.println("Failed to delete received attachment temp file “"
2258                         + tmpFile
2259                         + "”: "
2260                         + e.getMessage());
2261             }
2262         }
2263         return outputFile;
2264     }
2265
2266     private InputStream retrieveAttachmentAsStream(
2267             SignalServiceAttachmentPointer pointer, File tmpFile
2268     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2269         final SignalServiceMessageReceiver messageReceiver = getOrCreateMessageReceiver();
2270         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2271     }
2272
2273     void sendGroups() throws IOException, UntrustedIdentityException {
2274         File groupsFile = IOUtils.createTempFile();
2275
2276         try {
2277             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2278                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
2279                 for (GroupInfo record : account.getGroupStore().getGroups()) {
2280                     if (record instanceof GroupInfoV1) {
2281                         GroupInfoV1 groupInfo = (GroupInfoV1) record;
2282                         out.write(new DeviceGroup(groupInfo.groupId,
2283                                 Optional.fromNullable(groupInfo.name),
2284                                 new ArrayList<>(groupInfo.getMembers()),
2285                                 createGroupAvatarAttachment(groupInfo.groupId),
2286                                 groupInfo.isMember(account.getSelfAddress()),
2287                                 Optional.of(groupInfo.messageExpirationTime),
2288                                 Optional.fromNullable(groupInfo.color),
2289                                 groupInfo.blocked,
2290                                 Optional.fromNullable(groupInfo.inboxPosition),
2291                                 groupInfo.archived));
2292                     }
2293                 }
2294             }
2295
2296             if (groupsFile.exists() && groupsFile.length() > 0) {
2297                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
2298                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2299                             .withStream(groupsFileStream)
2300                             .withContentType("application/octet-stream")
2301                             .withLength(groupsFile.length())
2302                             .build();
2303
2304                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2305                 }
2306             }
2307         } finally {
2308             try {
2309                 Files.delete(groupsFile.toPath());
2310             } catch (IOException e) {
2311                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
2312             }
2313         }
2314     }
2315
2316     public void sendContacts() throws IOException, UntrustedIdentityException {
2317         File contactsFile = IOUtils.createTempFile();
2318
2319         try {
2320             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2321                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
2322                 for (ContactInfo record : account.getContactStore().getContacts()) {
2323                     VerifiedMessage verifiedMessage = null;
2324                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore()
2325                             .getIdentity(record.getAddress());
2326                     if (currentIdentity != null) {
2327                         verifiedMessage = new VerifiedMessage(record.getAddress(),
2328                                 currentIdentity.getIdentityKey(),
2329                                 currentIdentity.getTrustLevel().toVerifiedState(),
2330                                 currentIdentity.getDateAdded().getTime());
2331                     }
2332
2333                     ProfileKey profileKey = account.getProfileStore().getProfileKey(record.getAddress());
2334                     out.write(new DeviceContact(record.getAddress(),
2335                             Optional.fromNullable(record.name),
2336                             createContactAvatarAttachment(record.number),
2337                             Optional.fromNullable(record.color),
2338                             Optional.fromNullable(verifiedMessage),
2339                             Optional.fromNullable(profileKey),
2340                             record.blocked,
2341                             Optional.of(record.messageExpirationTime),
2342                             Optional.fromNullable(record.inboxPosition),
2343                             record.archived));
2344                 }
2345
2346                 if (account.getProfileKey() != null) {
2347                     // Send our own profile key as well
2348                     out.write(new DeviceContact(account.getSelfAddress(),
2349                             Optional.absent(),
2350                             Optional.absent(),
2351                             Optional.absent(),
2352                             Optional.absent(),
2353                             Optional.of(account.getProfileKey()),
2354                             false,
2355                             Optional.absent(),
2356                             Optional.absent(),
2357                             false));
2358                 }
2359             }
2360
2361             if (contactsFile.exists() && contactsFile.length() > 0) {
2362                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
2363                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2364                             .withStream(contactsFileStream)
2365                             .withContentType("application/octet-stream")
2366                             .withLength(contactsFile.length())
2367                             .build();
2368
2369                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2370                 }
2371             }
2372         } finally {
2373             try {
2374                 Files.delete(contactsFile.toPath());
2375             } catch (IOException e) {
2376                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
2377             }
2378         }
2379     }
2380
2381     void sendBlockedList() throws IOException, UntrustedIdentityException {
2382         List<SignalServiceAddress> addresses = new ArrayList<>();
2383         for (ContactInfo record : account.getContactStore().getContacts()) {
2384             if (record.blocked) {
2385                 addresses.add(record.getAddress());
2386             }
2387         }
2388         List<byte[]> groupIds = new ArrayList<>();
2389         for (GroupInfo record : account.getGroupStore().getGroups()) {
2390             if (record.isBlocked()) {
2391                 groupIds.add(record.groupId);
2392             }
2393         }
2394         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2395     }
2396
2397     private void sendVerifiedMessage(
2398             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2399     ) throws IOException, UntrustedIdentityException {
2400         VerifiedMessage verifiedMessage = new VerifiedMessage(destination,
2401                 identityKey,
2402                 trustLevel.toVerifiedState(),
2403                 System.currentTimeMillis());
2404         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2405     }
2406
2407     public List<ContactInfo> getContacts() {
2408         return account.getContactStore().getContacts();
2409     }
2410
2411     public ContactInfo getContact(String number) {
2412         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
2413     }
2414
2415     public GroupInfo getGroup(byte[] groupId) {
2416         return account.getGroupStore().getGroup(groupId);
2417     }
2418
2419     public List<JsonIdentityKeyStore.Identity> getIdentities() {
2420         return account.getSignalProtocolStore().getIdentities();
2421     }
2422
2423     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
2424         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
2425     }
2426
2427     /**
2428      * Trust this the identity with this fingerprint
2429      *
2430      * @param name        username of the identity
2431      * @param fingerprint Fingerprint
2432      */
2433     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2434         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2435         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2436         if (ids == null) {
2437             return false;
2438         }
2439         for (JsonIdentityKeyStore.Identity id : ids) {
2440             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
2441                 continue;
2442             }
2443
2444             account.getSignalProtocolStore()
2445                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2446             try {
2447                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2448             } catch (IOException | UntrustedIdentityException e) {
2449                 e.printStackTrace();
2450             }
2451             account.save();
2452             return true;
2453         }
2454         return false;
2455     }
2456
2457     /**
2458      * Trust this the identity with this safety number
2459      *
2460      * @param name         username of the identity
2461      * @param safetyNumber Safety number
2462      */
2463     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2464         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2465         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2466         if (ids == null) {
2467             return false;
2468         }
2469         for (JsonIdentityKeyStore.Identity id : ids) {
2470             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2471                 continue;
2472             }
2473
2474             account.getSignalProtocolStore()
2475                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2476             try {
2477                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2478             } catch (IOException | UntrustedIdentityException e) {
2479                 e.printStackTrace();
2480             }
2481             account.save();
2482             return true;
2483         }
2484         return false;
2485     }
2486
2487     /**
2488      * Trust all keys of this identity without verification
2489      *
2490      * @param name username of the identity
2491      */
2492     public boolean trustIdentityAllKeys(String name) {
2493         SignalServiceAddress address = resolveSignalServiceAddress(name);
2494         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2495         if (ids == null) {
2496             return false;
2497         }
2498         for (JsonIdentityKeyStore.Identity id : ids) {
2499             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2500                 account.getSignalProtocolStore()
2501                         .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2502                 try {
2503                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2504                 } catch (IOException | UntrustedIdentityException e) {
2505                     e.printStackTrace();
2506                 }
2507             }
2508         }
2509         account.save();
2510         return true;
2511     }
2512
2513     public String computeSafetyNumber(
2514             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2515     ) {
2516         return Utils.computeSafetyNumber(account.getSelfAddress(),
2517                 getIdentityKeyPair().getPublicKey(),
2518                 theirAddress,
2519                 theirIdentityKey);
2520     }
2521
2522     void saveAccount() {
2523         account.save();
2524     }
2525
2526     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2527         String canonicalizedNumber = UuidUtil.isUuid(identifier)
2528                 ? identifier
2529                 : Util.canonicalizeNumber(identifier, account.getUsername());
2530         return resolveSignalServiceAddress(canonicalizedNumber);
2531     }
2532
2533     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2534         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2535
2536         return resolveSignalServiceAddress(address);
2537     }
2538
2539     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2540         if (address.matches(account.getSelfAddress())) {
2541             return account.getSelfAddress();
2542         }
2543
2544         return account.getRecipientStore().resolveServiceAddress(address);
2545     }
2546
2547     @Override
2548     public void close() throws IOException {
2549         if (messagePipe != null) {
2550             messagePipe.shutdown();
2551             messagePipe = null;
2552         }
2553
2554         if (unidentifiedMessagePipe != null) {
2555             unidentifiedMessagePipe.shutdown();
2556             unidentifiedMessagePipe = null;
2557         }
2558
2559         account.close();
2560     }
2561
2562     public interface ReceiveMessageHandler {
2563
2564         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2565     }
2566 }