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.local.DecryptedGroup;
  47 import org.signal.storageservice.protos.groups.local.DecryptedMember;
  48 import org.signal.zkgroup.InvalidInputException;
  49 import org.signal.zkgroup.VerificationFailedException;
  50 import org.signal.zkgroup.auth.AuthCredentialResponse;
  51 import org.signal.zkgroup.groups.GroupMasterKey;
  52 import org.signal.zkgroup.groups.GroupSecretParams;
  53 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  54 import org.signal.zkgroup.profiles.ProfileKey;
  55 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  56 import org.whispersystems.libsignal.IdentityKey;
  57 import org.whispersystems.libsignal.IdentityKeyPair;
  58 import org.whispersystems.libsignal.InvalidKeyException;
  59 import org.whispersystems.libsignal.InvalidMessageException;
  60 import org.whispersystems.libsignal.InvalidVersionException;
  61 import org.whispersystems.libsignal.ecc.Curve;
  62 import org.whispersystems.libsignal.ecc.ECKeyPair;
  63 import org.whispersystems.libsignal.ecc.ECPublicKey;
  64 import org.whispersystems.libsignal.state.PreKeyRecord;
  65 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  66 import org.whispersystems.libsignal.util.KeyHelper;
  67 import org.whispersystems.libsignal.util.Medium;
  68 import org.whispersystems.libsignal.util.Pair;
  69 import org.whispersystems.libsignal.util.guava.Optional;
  70 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  71 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  72 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  73 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  74 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  75 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  76 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  77 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  78 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  79 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  80 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
  81 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  82 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  83 import org.whispersystems.signalservice.api.groupsv2.InvalidGroupStateException;
  84 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  85 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  86 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  87 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  88 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  89 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  90 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  91 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  92 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  93 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
  94 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  95 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  96 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  97 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  98 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  99 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 100 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 101 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 102 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 103 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 104 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 105 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 106 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 107 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 108 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 109 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 110 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 111 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 112 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 113 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
 114 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 115 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 116 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 117 import org.whispersystems.signalservice.api.util.SleepTimer;
 118 import org.whispersystems.signalservice.api.util.StreamDetails;
 119 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 120 import org.whispersystems.signalservice.api.util.UuidUtil;
 121 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 122 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 123 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 124 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 125 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 126 import org.whispersystems.signalservice.internal.util.Hex;
 127 import org.whispersystems.util.Base64;
 128
 129 import java.io.Closeable;
 130 import java.io.File;
 131 import java.io.FileInputStream;
 132 import java.io.FileNotFoundException;
 133 import java.io.FileOutputStream;
 134 import java.io.IOException;
 135 import java.io.InputStream;
 136 import java.io.OutputStream;
 137 import java.net.URI;
 138 import java.net.URISyntaxException;
 139 import java.net.URLEncoder;
 140 import java.nio.charset.StandardCharsets;
 141 import java.nio.file.Files;
 142 import java.nio.file.Paths;
 143 import java.nio.file.StandardCopyOption;
 144 import java.util.ArrayList;
 145 import java.util.Arrays;
 146 import java.util.Collection;
 147 import java.util.Collections;
 148 import java.util.Date;
 149 import java.util.HashMap;
 150 import java.util.HashSet;
 151 import java.util.List;
 152 import java.util.Locale;
 153 import java.util.Objects;
 154 import java.util.Set;
 155 import java.util.UUID;
 156 import java.util.concurrent.ExecutorService;
 157 import java.util.concurrent.TimeUnit;
 158 import java.util.concurrent.TimeoutException;
 159 import java.util.stream.Collectors;
 160 import java.util.zip.ZipEntry;
 161 import java.util.zip.ZipFile;
 162
 163 import static org.asamk.signal.manager.ServiceConfig.capabilities;
 164
 165 public class Manager implements Closeable {
 166
 167     private final SleepTimer timer = new UptimeSleepTimer();
 168
 169     private final SignalServiceConfiguration serviceConfiguration;
 170     private final String userAgent;
 171     private final boolean discoverableByPhoneNumber = true;
 172     private final boolean unrestrictedUnidentifiedAccess = false;
 173
 174     private final SignalAccount account;
 175     private final PathConfig pathConfig;
 176     private SignalServiceAccountManager accountManager;
 177     private GroupsV2Api groupsV2Api;
 178     private final GroupsV2Operations groupsV2Operations;
 179
 180     private SignalServiceMessageReceiver messageReceiver = null;
 181     private SignalServiceMessagePipe messagePipe = null;
 182     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 183
 184     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 185     private final ProfileHelper profileHelper;
 186     private final GroupHelper groupHelper;
 187
 188     public Manager(
 189             SignalAccount account,
 190             PathConfig pathConfig,
 191             SignalServiceConfiguration serviceConfiguration,
 192             String userAgent
 193     ) {
 194         this.account = account;
 195         this.pathConfig = pathConfig;
 196         this.serviceConfiguration = serviceConfiguration;
 197         this.userAgent = userAgent;
 198         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 199                 serviceConfiguration)) : null;
 200         this.accountManager = createSignalServiceAccountManager();
 201         this.groupsV2Api = accountManager.getGroupsV2Api();
 202
 203         this.account.setResolver(this::resolveSignalServiceAddress);
 204
 205         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 206                 account.getProfileStore()::getProfileKey,
 207                 this::getRecipientProfile,
 208                 this::getSenderCertificate);
 209         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 210                 unidentifiedAccessHelper::getAccessFor,
 211                 unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
 212                 this::getOrCreateMessageReceiver);
 213         this.groupHelper = new GroupHelper(this::getRecipientProfileKeyCredential,
 214                 this::getRecipientProfile,
 215                 account::getSelfAddress,
 216                 groupsV2Operations);
 217     }
 218
 219     public String getUsername() {
 220         return account.getUsername();
 221     }
 222
 223     public SignalServiceAddress getSelfAddress() {
 224         return account.getSelfAddress();
 225     }
 226
 227     private SignalServiceAccountManager createSignalServiceAccountManager() {
 228         return new SignalServiceAccountManager(serviceConfiguration,
 229                 new DynamicCredentialsProvider(account.getUuid(),
 230                         account.getUsername(),
 231                         account.getPassword(),
 232                         null,
 233                         account.getDeviceId()),
 234                 userAgent,
 235                 groupsV2Operations,
 236                 timer);
 237     }
 238
 239     private IdentityKeyPair getIdentityKeyPair() {
 240         return account.getSignalProtocolStore().getIdentityKeyPair();
 241     }
 242
 243     public int getDeviceId() {
 244         return account.getDeviceId();
 245     }
 246
 247     private String getMessageCachePath() {
 248         return pathConfig.getDataPath() + "/" + account.getUsername() + ".d/msg-cache";
 249     }
 250
 251     private String getMessageCachePath(String sender) {
 252         if (sender == null || sender.isEmpty()) {
 253             return getMessageCachePath();
 254         }
 255
 256         return getMessageCachePath() + "/" + sender.replace("/", "_");
 257     }
 258
 259     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 260         String cachePath = getMessageCachePath(sender);
 261         IOUtils.createPrivateDirectories(cachePath);
 262         return new File(cachePath + "/" + now + "_" + timestamp);
 263     }
 264
 265     public static Manager init(
 266             String username, String settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent
 267     ) throws IOException {
 268         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 269
 270         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 271             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 272             int registrationId = KeyHelper.generateRegistrationId(false);
 273
 274             ProfileKey profileKey = KeyUtils.createProfileKey();
 275             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(),
 276                     username,
 277                     identityKey,
 278                     registrationId,
 279                     profileKey);
 280             account.save();
 281
 282             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 283         }
 284
 285         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 286
 287         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 288
 289         m.migrateLegacyConfigs();
 290
 291         return m;
 292     }
 293
 294     private void migrateLegacyConfigs() {
 295         if (account.getProfileKey() == null && isRegistered()) {
 296             // Old config file, creating new profile key
 297             account.setProfileKey(KeyUtils.createProfileKey());
 298             account.save();
 299         }
 300         // Store profile keys only in profile store
 301         for (ContactInfo contact : account.getContactStore().getContacts()) {
 302             String profileKeyString = contact.profileKey;
 303             if (profileKeyString == null) {
 304                 continue;
 305             }
 306             final ProfileKey profileKey;
 307             try {
 308                 profileKey = new ProfileKey(Base64.decode(profileKeyString));
 309             } catch (InvalidInputException | IOException e) {
 310                 continue;
 311             }
 312             contact.profileKey = null;
 313             account.getProfileStore().storeProfileKey(contact.getAddress(), profileKey);
 314         }
 315     }
 316
 317     public void checkAccountState() throws IOException {
 318         if (account.isRegistered()) {
 319             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 320                 refreshPreKeys();
 321                 account.save();
 322             }
 323             if (account.getUuid() == null) {
 324                 account.setUuid(accountManager.getOwnUuid());
 325                 account.save();
 326             }
 327             updateAccountAttributes();
 328         }
 329     }
 330
 331     public boolean isRegistered() {
 332         return account.isRegistered();
 333     }
 334
 335     public void register(boolean voiceVerification, String captcha) throws IOException {
 336         account.setPassword(KeyUtils.createPassword());
 337
 338         // Resetting UUID, because registering doesn't work otherwise
 339         account.setUuid(null);
 340         accountManager = createSignalServiceAccountManager();
 341         this.groupsV2Api = accountManager.getGroupsV2Api();
 342
 343         if (voiceVerification) {
 344             accountManager.requestVoiceVerificationCode(Locale.getDefault(),
 345                     Optional.fromNullable(captcha),
 346                     Optional.absent());
 347         } else {
 348             accountManager.requestSmsVerificationCode(false, Optional.fromNullable(captcha), Optional.absent());
 349         }
 350
 351         account.setRegistered(false);
 352         account.save();
 353     }
 354
 355     public void updateAccountAttributes() throws IOException {
 356         accountManager.setAccountAttributes(account.getSignalingKey(),
 357                 account.getSignalProtocolStore().getLocalRegistrationId(),
 358                 true,
 359                 account.getRegistrationLockPin(),
 360                 account.getRegistrationLock(),
 361                 unidentifiedAccessHelper.getSelfUnidentifiedAccessKey(),
 362                 unrestrictedUnidentifiedAccess,
 363                 capabilities,
 364                 discoverableByPhoneNumber);
 365     }
 366
 367     public void setProfile(String name, File avatar) throws IOException {
 368         try (final StreamDetails streamDetails = avatar == null ? null : Utils.createStreamDetailsFromFile(avatar)) {
 369             accountManager.setVersionedProfile(account.getUuid(), account.getProfileKey(), name, streamDetails);
 370         }
 371     }
 372
 373     public void unregister() throws IOException {
 374         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 375         // If this is the master device, other users can't send messages to this number anymore.
 376         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 377         accountManager.setGcmId(Optional.absent());
 378
 379         account.setRegistered(false);
 380         account.save();
 381     }
 382
 383     public List<DeviceInfo> getLinkedDevices() throws IOException {
 384         List<DeviceInfo> devices = accountManager.getDevices();
 385         account.setMultiDevice(devices.size() > 1);
 386         account.save();
 387         return devices;
 388     }
 389
 390     public void removeLinkedDevices(int deviceId) throws IOException {
 391         accountManager.removeDevice(deviceId);
 392         List<DeviceInfo> devices = accountManager.getDevices();
 393         account.setMultiDevice(devices.size() > 1);
 394         account.save();
 395     }
 396
 397     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 398         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 399
 400         addDevice(info.deviceIdentifier, info.deviceKey);
 401     }
 402
 403     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 404         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 405         String verificationCode = accountManager.getNewDeviceVerificationCode();
 406
 407         accountManager.addDevice(deviceIdentifier,
 408                 deviceKey,
 409                 identityKeyPair,
 410                 Optional.of(account.getProfileKey().serialize()),
 411                 verificationCode);
 412         account.setMultiDevice(true);
 413         account.save();
 414     }
 415
 416     private List<PreKeyRecord> generatePreKeys() {
 417         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 418
 419         final int offset = account.getPreKeyIdOffset();
 420         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 421             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 422             ECKeyPair keyPair = Curve.generateKeyPair();
 423             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 424
 425             records.add(record);
 426         }
 427
 428         account.addPreKeys(records);
 429         account.save();
 430
 431         return records;
 432     }
 433
 434     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 435         try {
 436             ECKeyPair keyPair = Curve.generateKeyPair();
 437             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(),
 438                     keyPair.getPublicKey().serialize());
 439             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(),
 440                     System.currentTimeMillis(),
 441                     keyPair,
 442                     signature);
 443
 444             account.addSignedPreKey(record);
 445             account.save();
 446
 447             return record;
 448         } catch (InvalidKeyException e) {
 449             throw new AssertionError(e);
 450         }
 451     }
 452
 453     public void verifyAccount(String verificationCode, String pin) throws IOException {
 454         verificationCode = verificationCode.replace("-", "");
 455         account.setSignalingKey(KeyUtils.createSignalingKey());
 456         // TODO make unrestricted unidentified access configurable
 457         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode,
 458                 account.getSignalingKey(),
 459                 account.getSignalProtocolStore().getLocalRegistrationId(),
 460                 true,
 461                 pin,
 462                 null,
 463                 unidentifiedAccessHelper.getSelfUnidentifiedAccessKey(),
 464                 unrestrictedUnidentifiedAccess,
 465                 capabilities,
 466                 discoverableByPhoneNumber);
 467
 468         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 469         // TODO response.isStorageCapable()
 470         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 471         account.setRegistered(true);
 472         account.setUuid(uuid);
 473         account.setRegistrationLockPin(pin);
 474         account.getSignalProtocolStore()
 475                 .saveIdentity(account.getSelfAddress(),
 476                         getIdentityKeyPair().getPublicKey(),
 477                         TrustLevel.TRUSTED_VERIFIED);
 478
 479         refreshPreKeys();
 480         account.save();
 481     }
 482
 483     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 484         if (pin.isPresent()) {
 485             account.setRegistrationLockPin(pin.get());
 486             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 487         } else {
 488             account.setRegistrationLockPin(null);
 489             accountManager.removeRegistrationLockV1();
 490         }
 491         account.save();
 492     }
 493
 494     void refreshPreKeys() throws IOException {
 495         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 496         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 497         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 498
 499         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 500     }
 501
 502     private SignalServiceMessageReceiver createMessageReceiver() {
 503         final ClientZkProfileOperations clientZkProfileOperations = capabilities.isGv2() ? ClientZkOperations.create(
 504                 serviceConfiguration).getProfileOperations() : null;
 505         return new SignalServiceMessageReceiver(serviceConfiguration,
 506                 account.getUuid(),
 507                 account.getUsername(),
 508                 account.getPassword(),
 509                 account.getDeviceId(),
 510                 account.getSignalingKey(),
 511                 userAgent,
 512                 null,
 513                 timer,
 514                 clientZkProfileOperations);
 515     }
 516
 517     private SignalServiceMessageReceiver getOrCreateMessageReceiver() {
 518         if (messageReceiver == null) {
 519             messageReceiver = createMessageReceiver();
 520         }
 521         return messageReceiver;
 522     }
 523
 524     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 525         if (messagePipe == null) {
 526             messagePipe = getOrCreateMessageReceiver().createMessagePipe();
 527         }
 528         return messagePipe;
 529     }
 530
 531     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 532         if (unidentifiedMessagePipe == null) {
 533             unidentifiedMessagePipe = getOrCreateMessageReceiver().createUnidentifiedMessagePipe();
 534         }
 535         return unidentifiedMessagePipe;
 536     }
 537
 538     private SignalServiceMessageSender createMessageSender() {
 539         final ClientZkProfileOperations clientZkProfileOperations = capabilities.isGv2() ? ClientZkOperations.create(
 540                 serviceConfiguration).getProfileOperations() : null;
 541         final ExecutorService executor = null;
 542         return new SignalServiceMessageSender(serviceConfiguration,
 543                 account.getUuid(),
 544                 account.getUsername(),
 545                 account.getPassword(),
 546                 account.getDeviceId(),
 547                 account.getSignalProtocolStore(),
 548                 userAgent,
 549                 account.isMultiDevice(),
 550                 Optional.fromNullable(messagePipe),
 551                 Optional.fromNullable(unidentifiedMessagePipe),
 552                 Optional.absent(),
 553                 clientZkProfileOperations,
 554                 executor,
 555                 ServiceConfig.MAX_ENVELOPE_SIZE);
 556     }
 557
 558     private SignalServiceProfile getEncryptedRecipientProfile(SignalServiceAddress address) throws IOException {
 559         return profileHelper.retrieveProfileSync(address, SignalServiceProfile.RequestType.PROFILE).getProfile();
 560     }
 561
 562     private SignalProfile getRecipientProfile(
 563             SignalServiceAddress address
 564     ) {
 565         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 566         if (profileEntry == null) {
 567             return null;
 568         }
 569         long now = new Date().getTime();
 570         // Profiles are cache for 24h before retrieving them again
 571         if (!profileEntry.isRequestPending() && (
 572                 profileEntry.getProfile() == null || now - profileEntry.getLastUpdateTimestamp() > 24 * 60 * 60 * 1000
 573         )) {
 574             ProfileKey profileKey = profileEntry.getProfileKey();
 575             profileEntry.setRequestPending(true);
 576             SignalProfile profile;
 577             try {
 578                 profile = retrieveRecipientProfile(address, profileKey);
 579             } catch (IOException e) {
 580                 System.err.println("Failed to retrieve profile, ignoring: " + e.getMessage());
 581                 profileEntry.setRequestPending(false);
 582                 return null;
 583             }
 584             profileEntry.setRequestPending(false);
 585             account.getProfileStore()
 586                     .updateProfile(address, profileKey, now, profile, profileEntry.getProfileKeyCredential());
 587             return profile;
 588         }
 589         return profileEntry.getProfile();
 590     }
 591
 592     private ProfileKeyCredential getRecipientProfileKeyCredential(SignalServiceAddress address) {
 593         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 594         if (profileEntry == null) {
 595             return null;
 596         }
 597         if (profileEntry.getProfileKeyCredential() == null) {
 598             ProfileAndCredential profileAndCredential;
 599             try {
 600                 profileAndCredential = profileHelper.retrieveProfileSync(address,
 601                         SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 602             } catch (IOException e) {
 603                 System.err.println("Failed to retrieve profile key credential, ignoring: " + e.getMessage());
 604                 return null;
 605             }
 606
 607             long now = new Date().getTime();
 608             final ProfileKeyCredential profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 609             final SignalProfile profile = decryptProfile(address,
 610                     profileEntry.getProfileKey(),
 611                     profileAndCredential.getProfile());
 612             account.getProfileStore()
 613                     .updateProfile(address, profileEntry.getProfileKey(), now, profile, profileKeyCredential);
 614             return profileKeyCredential;
 615         }
 616         return profileEntry.getProfileKeyCredential();
 617     }
 618
 619     private SignalProfile retrieveRecipientProfile(
 620             SignalServiceAddress address, ProfileKey profileKey
 621     ) throws IOException {
 622         final SignalServiceProfile encryptedProfile = getEncryptedRecipientProfile(address);
 623
 624         return decryptProfile(address, profileKey, encryptedProfile);
 625     }
 626
 627     private SignalProfile decryptProfile(
 628             final SignalServiceAddress address, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 629     ) {
 630         File avatarFile = null;
 631         try {
 632             avatarFile = encryptedProfile.getAvatar() == null
 633                     ? null
 634                     : retrieveProfileAvatar(address, encryptedProfile.getAvatar(), profileKey);
 635         } catch (Throwable e) {
 636             System.err.println("Failed to retrieve profile avatar, ignoring: " + e.getMessage());
 637         }
 638
 639         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 640         try {
 641             String name;
 642             try {
 643                 name = encryptedProfile.getName() == null
 644                         ? null
 645                         : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName())));
 646             } catch (IOException e) {
 647                 name = null;
 648             }
 649             String unidentifiedAccess;
 650             try {
 651                 unidentifiedAccess = encryptedProfile.getUnidentifiedAccess() == null
 652                         || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess()))
 653                         ? null
 654                         : encryptedProfile.getUnidentifiedAccess();
 655             } catch (IOException e) {
 656                 unidentifiedAccess = null;
 657             }
 658             return new SignalProfile(encryptedProfile.getIdentityKey(),
 659                     name,
 660                     avatarFile,
 661                     unidentifiedAccess,
 662                     encryptedProfile.isUnrestrictedUnidentifiedAccess(),
 663                     encryptedProfile.getCapabilities());
 664         } catch (InvalidCiphertextException e) {
 665             return null;
 666         }
 667     }
 668
 669     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 670         File file = getGroupAvatarFile(groupId);
 671         if (!file.exists()) {
 672             return Optional.absent();
 673         }
 674
 675         return Optional.of(Utils.createAttachment(file));
 676     }
 677
 678     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 679         File file = getContactAvatarFile(number);
 680         if (!file.exists()) {
 681             return Optional.absent();
 682         }
 683
 684         return Optional.of(Utils.createAttachment(file));
 685     }
 686
 687     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 688         GroupInfo g = account.getGroupStore().getGroup(groupId);
 689         if (g == null) {
 690             throw new GroupNotFoundException(groupId);
 691         }
 692         if (!g.isMember(account.getSelfAddress())) {
 693             throw new NotAGroupMemberException(groupId, g.getTitle());
 694         }
 695         return g;
 696     }
 697
 698     public List<GroupInfo> getGroups() {
 699         return account.getGroupStore().getGroups();
 700     }
 701
 702     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 703             SignalServiceDataMessage.Builder messageBuilder, byte[] groupId
 704     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 705         final GroupInfo g = getGroupForSending(groupId);
 706
 707         GroupUtils.setGroupContext(messageBuilder, g);
 708         messageBuilder.withExpiration(g.getMessageExpirationTime());
 709
 710         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 711     }
 712
 713     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 714             String messageText, List<String> attachments, byte[] groupId
 715     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 716         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 717                 .withBody(messageText);
 718         if (attachments != null) {
 719             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 720         }
 721
 722         return sendGroupMessage(messageBuilder, groupId);
 723     }
 724
 725     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 726             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, byte[] groupId
 727     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 728         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
 729                 remove,
 730                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 731                 targetSentTimestamp);
 732         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 733                 .withReaction(reaction);
 734
 735         return sendGroupMessage(messageBuilder, groupId);
 736     }
 737
 738     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 739         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT).withId(groupId).build();
 740
 741         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 742
 743         final GroupInfo g = getGroupForSending(groupId);
 744         if (g instanceof GroupInfoV1) {
 745             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
 746             groupInfoV1.removeMember(account.getSelfAddress());
 747             account.getGroupStore().updateGroup(groupInfoV1);
 748         } else {
 749             throw new RuntimeException("TODO Not implemented!");
 750         }
 751
 752         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 753     }
 754
 755     private GroupInfoV2 createGroupV2(
 756             String name, Collection<SignalServiceAddress> members, InputStream avatar
 757     ) throws IOException {
 758         byte[] avatarBytes = avatar == null ? null : IOUtils.readFully(avatar);
 759         final GroupsV2Operations.NewGroup newGroup = groupHelper.createGroupV2(name, members, avatarBytes);
 760         final GroupSecretParams groupSecretParams = newGroup.getGroupSecretParams();
 761
 762         final GroupsV2AuthorizationString groupAuthForToday;
 763         final DecryptedGroup decryptedGroup;
 764         try {
 765             groupAuthForToday = getGroupAuthForToday(groupSecretParams);
 766             groupsV2Api.putNewGroup(newGroup, groupAuthForToday);
 767             decryptedGroup = groupsV2Api.getGroup(groupSecretParams, groupAuthForToday);
 768         } catch (IOException | VerificationFailedException | InvalidGroupStateException e) {
 769             System.err.println("Failed to create V2 group: " + e.getMessage());
 770             return null;
 771         }
 772         if (decryptedGroup == null) {
 773             System.err.println("Failed to create V2 group!");
 774             return null;
 775         }
 776
 777         final byte[] groupId = groupSecretParams.getPublicParams().getGroupIdentifier().serialize();
 778         final GroupMasterKey masterKey = groupSecretParams.getMasterKey();
 779         GroupInfoV2 g = new GroupInfoV2(groupId, masterKey);
 780         g.setGroup(decryptedGroup);
 781
 782         return g;
 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             InputStream avatar = avatarFile == null ? null : new FileInputStream(avatarFile);
 793             GroupInfoV2 gv2 = createGroupV2(name, members, avatar);
 794             if (gv2 == null) {
 795                 GroupInfoV1 gv1 = new GroupInfoV1(KeyUtils.createGroupId());
 796                 gv1.addMembers(Collections.singleton(account.getSelfAddress()));
 797                 updateGroupV1(gv1, name, members, avatarFile);
 798                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 799                 g = gv1;
 800             } else {
 801                 messageBuilder = getGroupUpdateMessageBuilder(gv2);
 802                 g = gv2;
 803             }
 804         } else {
 805             GroupInfo group = getGroupForSending(groupId);
 806             if (!(group instanceof GroupInfoV1)) {
 807                 throw new RuntimeException("TODO Not implemented!");
 808             }
 809             GroupInfoV1 gv1 = (GroupInfoV1) group;
 810             updateGroupV1(gv1, name, members, avatarFile);
 811             messageBuilder = getGroupUpdateMessageBuilder(gv1);
 812             g = gv1;
 813         }
 814
 815         account.getGroupStore().updateGroup(g);
 816
 817         final Pair<Long, List<SendMessageResult>> result = sendMessage(messageBuilder,
 818                 g.getMembersWithout(account.getSelfAddress()));
 819         return new Pair<>(g.groupId, result.second());
 820     }
 821
 822     private void updateGroupV1(
 823             final GroupInfoV1 g,
 824             final String name,
 825             final Collection<SignalServiceAddress> members,
 826             final String avatarFile
 827     ) throws IOException {
 828         if (name != null) {
 829             g.name = name;
 830         }
 831
 832         if (members != null) {
 833             final Set<String> newE164Members = new HashSet<>();
 834             for (SignalServiceAddress member : members) {
 835                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 836                     continue;
 837                 }
 838                 newE164Members.add(member.getNumber().get());
 839             }
 840
 841             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 842             if (contacts.size() != newE164Members.size()) {
 843                 // Some of the new members are not registered on Signal
 844                 for (ContactTokenDetails contact : contacts) {
 845                     newE164Members.remove(contact.getNumber());
 846                 }
 847                 throw new IOException("Failed to add members "
 848                         + Util.join(", ", newE164Members)
 849                         + " to group: Not registered on Signal");
 850             }
 851
 852             g.addMembers(members);
 853         }
 854
 855         if (avatarFile != null) {
 856             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 857             File aFile = getGroupAvatarFile(g.groupId);
 858             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 859         }
 860     }
 861
 862     Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 863             byte[] groupId, SignalServiceAddress recipient
 864     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 865         GroupInfoV1 g;
 866         GroupInfo group = getGroupForSending(groupId);
 867         if (!(group instanceof GroupInfoV1)) {
 868             throw new RuntimeException("Received an invalid group request for a v2 group!");
 869         }
 870         g = (GroupInfoV1) group;
 871
 872         if (!g.isMember(recipient)) {
 873             throw new NotAGroupMemberException(groupId, g.name);
 874         }
 875
 876         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 877
 878         // Send group message only to the recipient who requested it
 879         return sendMessage(messageBuilder, Collections.singleton(recipient));
 880     }
 881
 882     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
 883         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 884                 .withId(g.groupId)
 885                 .withName(g.name)
 886                 .withMembers(new ArrayList<>(g.getMembers()));
 887
 888         File aFile = getGroupAvatarFile(g.groupId);
 889         if (aFile.exists()) {
 890             try {
 891                 group.withAvatar(Utils.createAttachment(aFile));
 892             } catch (IOException e) {
 893                 throw new AttachmentInvalidException(aFile.toString(), e);
 894             }
 895         }
 896
 897         return SignalServiceDataMessage.newBuilder()
 898                 .asGroupMessage(group.build())
 899                 .withExpiration(g.getMessageExpirationTime());
 900     }
 901
 902     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g) {
 903         SignalServiceGroupV2.Builder group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
 904                 .withRevision(g.getGroup().getRevision())
 905 //                .withSignedGroupChange() // TODO
 906                 ;
 907         return SignalServiceDataMessage.newBuilder()
 908                 .asGroupMessage(group.build())
 909                 .withExpiration(g.getMessageExpirationTime());
 910     }
 911
 912     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
 913             byte[] groupId, SignalServiceAddress recipient
 914     ) throws IOException {
 915         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 916                 .withId(groupId);
 917
 918         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 919                 .asGroupMessage(group.build());
 920
 921         // Send group info request message to the recipient who sent us a message with this groupId
 922         return sendMessage(messageBuilder, Collections.singleton(recipient));
 923     }
 924
 925     void sendReceipt(
 926             SignalServiceAddress remoteAddress, long messageId
 927     ) throws IOException, UntrustedIdentityException {
 928         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 929                 Collections.singletonList(messageId),
 930                 System.currentTimeMillis());
 931
 932         createMessageSender().sendReceipt(remoteAddress,
 933                 unidentifiedAccessHelper.getAccessFor(remoteAddress),
 934                 receiptMessage);
 935     }
 936
 937     public Pair<Long, List<SendMessageResult>> sendMessage(
 938             String messageText, List<String> attachments, List<String> recipients
 939     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
 940         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 941                 .withBody(messageText);
 942         if (attachments != null) {
 943             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 944
 945             // Upload attachments here, so we only upload once even for multiple recipients
 946             SignalServiceMessageSender messageSender = createMessageSender();
 947             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 948             for (SignalServiceAttachment attachment : attachmentStreams) {
 949                 if (attachment.isStream()) {
 950                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 951                 } else if (attachment.isPointer()) {
 952                     attachmentPointers.add(attachment.asPointer());
 953                 }
 954             }
 955
 956             messageBuilder.withAttachments(attachmentPointers);
 957         }
 958         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
 959     }
 960
 961     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
 962             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
 963     ) throws IOException, InvalidNumberException {
 964         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
 965                 remove,
 966                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 967                 targetSentTimestamp);
 968         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 969                 .withReaction(reaction);
 970         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
 971     }
 972
 973     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
 974         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
 975
 976         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 977         try {
 978             return sendMessage(messageBuilder, signalServiceAddresses);
 979         } catch (Exception e) {
 980             for (SignalServiceAddress address : signalServiceAddresses) {
 981                 handleEndSession(address);
 982             }
 983             account.save();
 984             throw e;
 985         }
 986     }
 987
 988     public String getContactName(String number) throws InvalidNumberException {
 989         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 990         if (contact == null) {
 991             return "";
 992         } else {
 993             return contact.name;
 994         }
 995     }
 996
 997     public void setContactName(String number, String name) throws InvalidNumberException {
 998         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 999         ContactInfo contact = account.getContactStore().getContact(address);
1000         if (contact == null) {
1001             contact = new ContactInfo(address);
1002         }
1003         contact.name = name;
1004         account.getContactStore().updateContact(contact);
1005         account.save();
1006     }
1007
1008     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
1009         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
1010     }
1011
1012     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
1013         ContactInfo contact = account.getContactStore().getContact(address);
1014         if (contact == null) {
1015             contact = new ContactInfo(address);
1016         }
1017         contact.blocked = blocked;
1018         account.getContactStore().updateContact(contact);
1019         account.save();
1020     }
1021
1022     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
1023         GroupInfo group = getGroup(groupId);
1024         if (group == null) {
1025             throw new GroupNotFoundException(groupId);
1026         }
1027
1028         group.setBlocked(blocked);
1029         account.getGroupStore().updateGroup(group);
1030         account.save();
1031     }
1032
1033     public Pair<byte[], List<SendMessageResult>> updateGroup(
1034             byte[] groupId, String name, List<String> members, String avatar
1035     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
1036         return sendUpdateGroupMessage(groupId,
1037                 name,
1038                 members == null ? null : getSignalServiceAddresses(members),
1039                 avatar);
1040     }
1041
1042     /**
1043      * Change the expiration timer for a contact
1044      */
1045     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
1046         ContactInfo contact = account.getContactStore().getContact(address);
1047         contact.messageExpirationTime = messageExpirationTimer;
1048         account.getContactStore().updateContact(contact);
1049         sendExpirationTimerUpdate(address);
1050         account.save();
1051     }
1052
1053     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
1054         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1055                 .asExpirationUpdate();
1056         sendMessage(messageBuilder, Collections.singleton(address));
1057     }
1058
1059     /**
1060      * Change the expiration timer for a contact
1061      */
1062     public void setExpirationTimer(
1063             String number, int messageExpirationTimer
1064     ) throws IOException, InvalidNumberException {
1065         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1066         setExpirationTimer(address, messageExpirationTimer);
1067     }
1068
1069     /**
1070      * Change the expiration timer for a group
1071      */
1072     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
1073         GroupInfo g = account.getGroupStore().getGroup(groupId);
1074         if (g instanceof GroupInfoV1) {
1075             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
1076             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1077             account.getGroupStore().updateGroup(groupInfoV1);
1078         } else {
1079             throw new RuntimeException("TODO Not implemented!");
1080         }
1081     }
1082
1083     /**
1084      * Upload the sticker pack from path.
1085      *
1086      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1087      * @return if successful, returns the URL to install the sticker pack in the signal app
1088      */
1089     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
1090         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
1091
1092         SignalServiceMessageSender messageSender = createMessageSender();
1093
1094         byte[] packKey = KeyUtils.createStickerUploadKey();
1095         String packId = messageSender.uploadStickerManifest(manifest, packKey);
1096
1097         Sticker sticker = new Sticker(Hex.fromStringCondensed(packId), packKey);
1098         account.getStickerStore().updateSticker(sticker);
1099         account.save();
1100
1101         try {
1102             return new URI("https",
1103                     "signal.art",
1104                     "/addstickers/",
1105                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1106                             Hex.toStringCondensed(packKey),
1107                             StandardCharsets.UTF_8)).toString();
1108         } catch (URISyntaxException e) {
1109             throw new AssertionError(e);
1110         }
1111     }
1112
1113     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(
1114             final String path
1115     ) throws IOException, StickerPackInvalidException {
1116         ZipFile zip = null;
1117         String rootPath = null;
1118
1119         final File file = new File(path);
1120         if (file.getName().endsWith(".zip")) {
1121             zip = new ZipFile(file);
1122         } else if (file.getName().equals("manifest.json")) {
1123             rootPath = file.getParent();
1124         } else {
1125             throw new StickerPackInvalidException("Could not find manifest.json");
1126         }
1127
1128         JsonStickerPack pack = parseStickerPack(rootPath, zip);
1129
1130         if (pack.stickers == null) {
1131             throw new StickerPackInvalidException("Must set a 'stickers' field.");
1132         }
1133
1134         if (pack.stickers.isEmpty()) {
1135             throw new StickerPackInvalidException("Must include stickers.");
1136         }
1137
1138         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
1139         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
1140             if (sticker.file == null) {
1141                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
1142             }
1143
1144             Pair<InputStream, Long> data;
1145             try {
1146                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
1147             } catch (IOException ignored) {
1148                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
1149             }
1150
1151             String contentType = Utils.getFileMimeType(new File(sticker.file), null);
1152             StickerInfo stickerInfo = new StickerInfo(data.first(),
1153                     data.second(),
1154                     Optional.fromNullable(sticker.emoji).or(""),
1155                     contentType);
1156             stickers.add(stickerInfo);
1157         }
1158
1159         StickerInfo cover = null;
1160         if (pack.cover != null) {
1161             if (pack.cover.file == null) {
1162                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
1163             }
1164
1165             Pair<InputStream, Long> data;
1166             try {
1167                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
1168             } catch (IOException ignored) {
1169                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
1170             }
1171
1172             String contentType = Utils.getFileMimeType(new File(pack.cover.file), null);
1173             cover = new StickerInfo(data.first(),
1174                     data.second(),
1175                     Optional.fromNullable(pack.cover.emoji).or(""),
1176                     contentType);
1177         }
1178
1179         return new SignalServiceStickerManifestUpload(pack.title, pack.author, cover, stickers);
1180     }
1181
1182     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
1183         InputStream inputStream;
1184         if (zip != null) {
1185             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
1186         } else {
1187             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
1188         }
1189         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
1190     }
1191
1192     private static Pair<InputStream, Long> getInputStreamAndLength(
1193             final String rootPath, final ZipFile zip, final String subfile
1194     ) throws IOException {
1195         if (zip != null) {
1196             final ZipEntry entry = zip.getEntry(subfile);
1197             return new Pair<>(zip.getInputStream(entry), entry.getSize());
1198         } else {
1199             final File file = new File(rootPath, subfile);
1200             return new Pair<>(new FileInputStream(file), file.length());
1201         }
1202     }
1203
1204     void requestSyncGroups() throws IOException {
1205         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1206                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1207                 .build();
1208         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1209         try {
1210             sendSyncMessage(message);
1211         } catch (UntrustedIdentityException e) {
1212             e.printStackTrace();
1213         }
1214     }
1215
1216     void requestSyncContacts() throws IOException {
1217         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1218                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1219                 .build();
1220         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1221         try {
1222             sendSyncMessage(message);
1223         } catch (UntrustedIdentityException e) {
1224             e.printStackTrace();
1225         }
1226     }
1227
1228     void requestSyncBlocked() throws IOException {
1229         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1230                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1231                 .build();
1232         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1233         try {
1234             sendSyncMessage(message);
1235         } catch (UntrustedIdentityException e) {
1236             e.printStackTrace();
1237         }
1238     }
1239
1240     void requestSyncConfiguration() throws IOException {
1241         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1242                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1243                 .build();
1244         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1245         try {
1246             sendSyncMessage(message);
1247         } catch (UntrustedIdentityException e) {
1248             e.printStackTrace();
1249         }
1250     }
1251
1252     private byte[] getSenderCertificate() {
1253         // TODO support UUID capable sender certificates
1254         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1255         byte[] certificate;
1256         try {
1257             certificate = accountManager.getSenderCertificate();
1258         } catch (IOException e) {
1259             System.err.println("Failed to get sender certificate: " + e);
1260             return null;
1261         }
1262         // TODO cache for a day
1263         return certificate;
1264     }
1265
1266     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1267         SignalServiceMessageSender messageSender = createMessageSender();
1268         try {
1269             messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1270         } catch (UntrustedIdentityException e) {
1271             account.getSignalProtocolStore()
1272                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1273                             e.getIdentityKey(),
1274                             TrustLevel.UNTRUSTED);
1275             throw e;
1276         }
1277     }
1278
1279     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1280         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1281
1282         for (String number : numbers) {
1283             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1284         }
1285         return signalServiceAddresses;
1286     }
1287
1288     private Pair<Long, List<SendMessageResult>> sendMessage(
1289             SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients
1290     ) throws IOException {
1291         recipients = recipients.stream().map(this::resolveSignalServiceAddress).collect(Collectors.toSet());
1292         final long timestamp = System.currentTimeMillis();
1293         messageBuilder.withTimestamp(timestamp);
1294         getOrCreateMessagePipe();
1295         getOrCreateUnidentifiedMessagePipe();
1296         SignalServiceDataMessage message = null;
1297         try {
1298             message = messageBuilder.build();
1299             if (message.getGroupContext().isPresent()) {
1300                 try {
1301                     SignalServiceMessageSender messageSender = createMessageSender();
1302                     final boolean isRecipientUpdate = false;
1303                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients),
1304                             unidentifiedAccessHelper.getAccessFor(recipients),
1305                             isRecipientUpdate,
1306                             message);
1307                     for (SendMessageResult r : result) {
1308                         if (r.getIdentityFailure() != null) {
1309                             account.getSignalProtocolStore()
1310                                     .saveIdentity(r.getAddress(),
1311                                             r.getIdentityFailure().getIdentityKey(),
1312                                             TrustLevel.UNTRUSTED);
1313                         }
1314                     }
1315                     return new Pair<>(timestamp, result);
1316                 } catch (UntrustedIdentityException e) {
1317                     account.getSignalProtocolStore()
1318                             .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1319                                     e.getIdentityKey(),
1320                                     TrustLevel.UNTRUSTED);
1321                     return new Pair<>(timestamp, Collections.emptyList());
1322                 }
1323             } else {
1324                 // Send to all individually, so sync messages are sent correctly
1325                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1326                 for (SignalServiceAddress address : recipients) {
1327                     ContactInfo contact = account.getContactStore().getContact(address);
1328                     if (contact != null) {
1329                         messageBuilder.withExpiration(contact.messageExpirationTime);
1330                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1331                     } else {
1332                         messageBuilder.withExpiration(0);
1333                         messageBuilder.withProfileKey(null);
1334                     }
1335                     message = messageBuilder.build();
1336                     if (address.matches(account.getSelfAddress())) {
1337                         results.add(sendSelfMessage(message));
1338                     } else {
1339                         results.add(sendMessage(address, message));
1340                     }
1341                 }
1342                 return new Pair<>(timestamp, results);
1343             }
1344         } finally {
1345             if (message != null && message.isEndSession()) {
1346                 for (SignalServiceAddress recipient : recipients) {
1347                     handleEndSession(recipient);
1348                 }
1349             }
1350             account.save();
1351         }
1352     }
1353
1354     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1355         SignalServiceMessageSender messageSender = createMessageSender();
1356
1357         SignalServiceAddress recipient = account.getSelfAddress();
1358
1359         final Optional<UnidentifiedAccessPair> unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipient);
1360         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1361                 message.getTimestamp(),
1362                 message,
1363                 message.getExpiresInSeconds(),
1364                 Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1365                 false);
1366         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1367
1368         try {
1369             long startTime = System.currentTimeMillis();
1370             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1371             return SendMessageResult.success(recipient,
1372                     unidentifiedAccess.isPresent(),
1373                     false,
1374                     System.currentTimeMillis() - startTime);
1375         } catch (UntrustedIdentityException e) {
1376             account.getSignalProtocolStore()
1377                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1378                             e.getIdentityKey(),
1379                             TrustLevel.UNTRUSTED);
1380             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1381         }
1382     }
1383
1384     private SendMessageResult sendMessage(
1385             SignalServiceAddress address, SignalServiceDataMessage message
1386     ) throws IOException {
1387         SignalServiceMessageSender messageSender = createMessageSender();
1388
1389         try {
1390             return messageSender.sendMessage(address, unidentifiedAccessHelper.getAccessFor(address), message);
1391         } catch (UntrustedIdentityException e) {
1392             account.getSignalProtocolStore()
1393                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1394                             e.getIdentityKey(),
1395                             TrustLevel.UNTRUSTED);
1396             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1397         }
1398     }
1399
1400     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1401         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(),
1402                 account.getSignalProtocolStore(),
1403                 Utils.getCertificateValidator());
1404         try {
1405             return cipher.decrypt(envelope);
1406         } catch (ProtocolUntrustedIdentityException e) {
1407             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1408                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e
1409                         .getCause();
1410                 account.getSignalProtocolStore()
1411                         .saveIdentity(resolveSignalServiceAddress(identityException.getName()),
1412                                 identityException.getUntrustedIdentity(),
1413                                 TrustLevel.UNTRUSTED);
1414                 throw identityException;
1415             }
1416             throw new AssertionError(e);
1417         }
1418     }
1419
1420     private void handleEndSession(SignalServiceAddress source) {
1421         account.getSignalProtocolStore().deleteAllSessions(source);
1422     }
1423
1424     private static int currentTimeDays() {
1425         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
1426     }
1427
1428     private GroupsV2AuthorizationString getGroupAuthForToday(
1429             final GroupSecretParams groupSecretParams
1430     ) throws IOException, VerificationFailedException {
1431         final int today = currentTimeDays();
1432         // Returns credentials for the next 7 days
1433         final HashMap<Integer, AuthCredentialResponse> credentials = groupsV2Api.getCredentials(today);
1434         // TODO cache credentials until they expire
1435         AuthCredentialResponse authCredentialResponse = credentials.get(today);
1436         return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
1437                 today,
1438                 groupSecretParams,
1439                 authCredentialResponse);
1440     }
1441
1442     private List<HandleAction> handleSignalServiceDataMessage(
1443             SignalServiceDataMessage message,
1444             boolean isSync,
1445             SignalServiceAddress source,
1446             SignalServiceAddress destination,
1447             boolean ignoreAttachments
1448     ) {
1449         List<HandleAction> actions = new ArrayList<>();
1450         if (message.getGroupContext().isPresent()) {
1451             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1452                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1453                 GroupInfo group = account.getGroupStore().getGroupByV1Id(groupInfo.getGroupId());
1454                 if (group == null || group instanceof GroupInfoV1) {
1455                     GroupInfoV1 groupV1 = (GroupInfoV1) group;
1456                     switch (groupInfo.getType()) {
1457                         case UPDATE: {
1458                             if (groupV1 == null) {
1459                                 groupV1 = new GroupInfoV1(groupInfo.getGroupId());
1460                             }
1461
1462                             if (groupInfo.getAvatar().isPresent()) {
1463                                 SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1464                                 if (avatar.isPointer()) {
1465                                     try {
1466                                         retrieveGroupAvatarAttachment(avatar.asPointer(), groupV1.groupId);
1467                                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1468                                         System.err.println("Failed to retrieve group avatar (" + avatar.asPointer()
1469                                                 .getRemoteId() + "): " + e.getMessage());
1470                                     }
1471                                 }
1472                             }
1473
1474                             if (groupInfo.getName().isPresent()) {
1475                                 groupV1.name = groupInfo.getName().get();
1476                             }
1477
1478                             if (groupInfo.getMembers().isPresent()) {
1479                                 groupV1.addMembers(groupInfo.getMembers()
1480                                         .get()
1481                                         .stream()
1482                                         .map(this::resolveSignalServiceAddress)
1483                                         .collect(Collectors.toSet()));
1484                             }
1485
1486                             account.getGroupStore().updateGroup(groupV1);
1487                             break;
1488                         }
1489                         case DELIVER:
1490                             if (groupV1 == null && !isSync) {
1491                                 actions.add(new SendGroupInfoRequestAction(source, groupInfo.getGroupId()));
1492                             }
1493                             break;
1494                         case QUIT: {
1495                             if (groupV1 != null) {
1496                                 groupV1.removeMember(source);
1497                                 account.getGroupStore().updateGroup(groupV1);
1498                             }
1499                             break;
1500                         }
1501                         case REQUEST_INFO:
1502                             if (groupV1 != null && !isSync) {
1503                                 actions.add(new SendGroupUpdateAction(source, groupV1.groupId));
1504                             }
1505                             break;
1506                     }
1507                 } else {
1508                     // Received a group v1 message for a v2 group
1509                 }
1510             }
1511             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1512                 final SignalServiceGroupV2 groupContext = message.getGroupContext().get().getGroupV2().get();
1513                 final GroupMasterKey groupMasterKey = groupContext.getMasterKey();
1514
1515                 final GroupSecretParams groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1516
1517                 byte[] groupId = groupSecretParams.getPublicParams().getGroupIdentifier().serialize();
1518                 GroupInfo groupInfo = account.getGroupStore().getGroupByV2Id(groupId);
1519                 if (groupInfo instanceof GroupInfoV1) {
1520                     // Received a v2 group message for a v2 group, we need to locally migrate the group
1521                     account.getGroupStore().deleteGroup(groupInfo.groupId);
1522                     GroupInfoV2 groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1523                     groupInfoV2.setGroup(getDecryptedGroup(groupSecretParams));
1524                     account.getGroupStore().updateGroup(groupInfoV2);
1525                     System.err.println("Locally migrated group "
1526                             + Base64.encodeBytes(groupInfo.groupId)
1527                             + " to group v2, id: "
1528                             + Base64.encodeBytes(groupInfoV2.groupId)
1529                             + " !!!");
1530                 } else if (groupInfo == null || groupInfo instanceof GroupInfoV2) {
1531                     GroupInfoV2 groupInfoV2 = groupInfo == null
1532                             ? new GroupInfoV2(groupId, groupMasterKey)
1533                             : (GroupInfoV2) groupInfo;
1534
1535                     if (groupInfoV2.getGroup() == null
1536                             || groupInfoV2.getGroup().getRevision() < groupContext.getRevision()) {
1537                         // TODO check if revision is only 1 behind and a signedGroupChange is available
1538                         groupInfoV2.setGroup(getDecryptedGroup(groupSecretParams));
1539                         account.getGroupStore().updateGroup(groupInfoV2);
1540                     }
1541                 }
1542             }
1543         }
1544         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1545         if (message.isEndSession()) {
1546             handleEndSession(conversationPartnerAddress);
1547         }
1548         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1549             if (message.getGroupContext().isPresent()) {
1550                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1551                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1552                     GroupInfoV1 group = account.getGroupStore().getOrCreateGroupV1(groupInfo.getGroupId());
1553                     if (group != null) {
1554                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1555                             group.messageExpirationTime = message.getExpiresInSeconds();
1556                             account.getGroupStore().updateGroup(group);
1557                         }
1558                     }
1559                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1560                     // disappearing message timer already stored in the DecryptedGroup
1561                 }
1562             } else {
1563                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1564                 if (contact == null) {
1565                     contact = new ContactInfo(conversationPartnerAddress);
1566                 }
1567                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1568                     contact.messageExpirationTime = message.getExpiresInSeconds();
1569                     account.getContactStore().updateContact(contact);
1570                 }
1571             }
1572         }
1573         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1574             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1575                 if (attachment.isPointer()) {
1576                     try {
1577                         retrieveAttachment(attachment.asPointer());
1578                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1579                         System.err.println("Failed to retrieve attachment ("
1580                                 + attachment.asPointer().getRemoteId()
1581                                 + "): "
1582                                 + e.getMessage());
1583                     }
1584                 }
1585             }
1586         }
1587         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1588             final ProfileKey profileKey;
1589             try {
1590                 profileKey = new ProfileKey(message.getProfileKey().get());
1591             } catch (InvalidInputException e) {
1592                 throw new AssertionError(e);
1593             }
1594             if (source.matches(account.getSelfAddress())) {
1595                 this.account.setProfileKey(profileKey);
1596             }
1597             this.account.getProfileStore().storeProfileKey(source, profileKey);
1598         }
1599         if (message.getPreviews().isPresent()) {
1600             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1601             for (SignalServiceDataMessage.Preview preview : previews) {
1602                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1603                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1604                     try {
1605                         retrieveAttachment(attachment);
1606                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1607                         System.err.println("Failed to retrieve attachment ("
1608                                 + attachment.getRemoteId()
1609                                 + "): "
1610                                 + e.getMessage());
1611                     }
1612                 }
1613             }
1614         }
1615         if (message.getSticker().isPresent()) {
1616             final SignalServiceDataMessage.Sticker messageSticker = message.getSticker().get();
1617             Sticker sticker = account.getStickerStore().getSticker(messageSticker.getPackId());
1618             if (sticker == null) {
1619                 sticker = new Sticker(messageSticker.getPackId(), messageSticker.getPackKey());
1620                 account.getStickerStore().updateSticker(sticker);
1621             }
1622         }
1623         return actions;
1624     }
1625
1626     private DecryptedGroup getDecryptedGroup(final GroupSecretParams groupSecretParams) {
1627         try {
1628             final GroupsV2AuthorizationString groupsV2AuthorizationString = getGroupAuthForToday(groupSecretParams);
1629             DecryptedGroup group = groupsV2Api.getGroup(groupSecretParams, groupsV2AuthorizationString);
1630             for (DecryptedMember member : group.getMembersList()) {
1631                 final SignalServiceAddress address = resolveSignalServiceAddress(new SignalServiceAddress(UuidUtil.parseOrThrow(
1632                         member.getUuid().toByteArray()), null));
1633                 try {
1634                     account.getProfileStore()
1635                             .storeProfileKey(address, new ProfileKey(member.getProfileKey().toByteArray()));
1636                 } catch (InvalidInputException ignored) {
1637                 }
1638             }
1639             return group;
1640         } catch (IOException | VerificationFailedException | InvalidGroupStateException e) {
1641             System.err.println("Failed to retrieve Group V2 info, ignoring ...");
1642             return null;
1643         }
1644     }
1645
1646     private void retryFailedReceivedMessages(
1647             ReceiveMessageHandler handler, boolean ignoreAttachments
1648     ) {
1649         final File cachePath = new File(getMessageCachePath());
1650         if (!cachePath.exists()) {
1651             return;
1652         }
1653         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1654             if (!dir.isDirectory()) {
1655                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1656                 continue;
1657             }
1658
1659             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1660                 if (!fileEntry.isFile()) {
1661                     continue;
1662                 }
1663                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1664             }
1665             // Try to delete directory if empty
1666             dir.delete();
1667         }
1668     }
1669
1670     private void retryFailedReceivedMessage(
1671             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry
1672     ) {
1673         SignalServiceEnvelope envelope;
1674         try {
1675             envelope = Utils.loadEnvelope(fileEntry);
1676             if (envelope == null) {
1677                 return;
1678             }
1679         } catch (IOException e) {
1680             e.printStackTrace();
1681             return;
1682         }
1683         SignalServiceContent content = null;
1684         if (!envelope.isReceipt()) {
1685             try {
1686                 content = decryptMessage(envelope);
1687             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1688                 return;
1689             } catch (Exception er) {
1690                 // All other errors are not recoverable, so delete the cached message
1691                 try {
1692                     Files.delete(fileEntry.toPath());
1693                 } catch (IOException e) {
1694                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1695                 }
1696                 return;
1697             }
1698             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1699             for (HandleAction action : actions) {
1700                 try {
1701                     action.execute(this);
1702                 } catch (Throwable e) {
1703                     e.printStackTrace();
1704                 }
1705             }
1706         }
1707         account.save();
1708         handler.handleMessage(envelope, content, null);
1709         try {
1710             Files.delete(fileEntry.toPath());
1711         } catch (IOException e) {
1712             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1713         }
1714     }
1715
1716     public void receiveMessages(
1717             long timeout,
1718             TimeUnit unit,
1719             boolean returnOnTimeout,
1720             boolean ignoreAttachments,
1721             ReceiveMessageHandler handler
1722     ) throws IOException {
1723         retryFailedReceivedMessages(handler, ignoreAttachments);
1724
1725         Set<HandleAction> queuedActions = null;
1726
1727         getOrCreateMessagePipe();
1728
1729         boolean hasCaughtUpWithOldMessages = false;
1730
1731         while (true) {
1732             SignalServiceEnvelope envelope;
1733             SignalServiceContent content = null;
1734             Exception exception = null;
1735             final long now = new Date().getTime();
1736             try {
1737                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1738                     // store message on disk, before acknowledging receipt to the server
1739                     try {
1740                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1741                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1742                         Utils.storeEnvelope(envelope1, cacheFile);
1743                     } catch (IOException e) {
1744                         System.err.println("Failed to store encrypted message in disk cache, ignoring: "
1745                                 + e.getMessage());
1746                     }
1747                 });
1748                 if (result.isPresent()) {
1749                     envelope = result.get();
1750                 } else {
1751                     // Received indicator that server queue is empty
1752                     hasCaughtUpWithOldMessages = true;
1753
1754                     if (queuedActions != null) {
1755                         for (HandleAction action : queuedActions) {
1756                             try {
1757                                 action.execute(this);
1758                             } catch (Throwable e) {
1759                                 e.printStackTrace();
1760                             }
1761                         }
1762                         account.save();
1763                         queuedActions.clear();
1764                         queuedActions = null;
1765                     }
1766
1767                     // Continue to wait another timeout for new messages
1768                     continue;
1769                 }
1770             } catch (TimeoutException e) {
1771                 if (returnOnTimeout) return;
1772                 continue;
1773             } catch (InvalidVersionException e) {
1774                 System.err.println("Ignoring error: " + e.getMessage());
1775                 continue;
1776             }
1777
1778             if (envelope.hasSource()) {
1779                 // Store uuid if we don't have it already
1780                 SignalServiceAddress source = envelope.getSourceAddress();
1781                 resolveSignalServiceAddress(source);
1782             }
1783             if (!envelope.isReceipt()) {
1784                 try {
1785                     content = decryptMessage(envelope);
1786                 } catch (Exception e) {
1787                     exception = e;
1788                 }
1789                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1790                 if (hasCaughtUpWithOldMessages) {
1791                     for (HandleAction action : actions) {
1792                         try {
1793                             action.execute(this);
1794                         } catch (Throwable e) {
1795                             e.printStackTrace();
1796                         }
1797                     }
1798                 } else {
1799                     if (queuedActions == null) {
1800                         queuedActions = new HashSet<>();
1801                     }
1802                     queuedActions.addAll(actions);
1803                 }
1804             }
1805             account.save();
1806             if (!isMessageBlocked(envelope, content)) {
1807                 handler.handleMessage(envelope, content, exception);
1808             }
1809             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1810                 File cacheFile = null;
1811                 try {
1812                     String source = envelope.getSourceE164().isPresent() ? envelope.getSourceE164().get() : "";
1813                     cacheFile = getMessageCacheFile(source, now, envelope.getTimestamp());
1814                     Files.delete(cacheFile.toPath());
1815                     // Try to delete directory if empty
1816                     new File(getMessageCachePath()).delete();
1817                 } catch (IOException e) {
1818                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1819                 }
1820             }
1821         }
1822     }
1823
1824     private boolean isMessageBlocked(
1825             SignalServiceEnvelope envelope, SignalServiceContent content
1826     ) {
1827         SignalServiceAddress source;
1828         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1829             source = envelope.getSourceAddress();
1830         } else if (content != null) {
1831             source = content.getSender();
1832         } else {
1833             return false;
1834         }
1835         ContactInfo sourceContact = account.getContactStore().getContact(source);
1836         if (sourceContact != null && sourceContact.blocked) {
1837             return true;
1838         }
1839
1840         if (content != null && content.getDataMessage().isPresent()) {
1841             SignalServiceDataMessage message = content.getDataMessage().get();
1842             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1843                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1844                 GroupInfo group = getGroup(groupInfo.getGroupId());
1845                 return groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.isBlocked();
1846             }
1847         }
1848         return false;
1849     }
1850
1851     private List<HandleAction> handleMessage(
1852             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
1853     ) {
1854         List<HandleAction> actions = new ArrayList<>();
1855         if (content != null) {
1856             SignalServiceAddress sender;
1857             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1858                 sender = envelope.getSourceAddress();
1859             } else {
1860                 sender = content.getSender();
1861             }
1862             // Store uuid if we don't have it already
1863             resolveSignalServiceAddress(sender);
1864
1865             if (content.getDataMessage().isPresent()) {
1866                 SignalServiceDataMessage message = content.getDataMessage().get();
1867
1868                 if (content.isNeedsReceipt()) {
1869                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1870                 }
1871
1872                 actions.addAll(handleSignalServiceDataMessage(message,
1873                         false,
1874                         sender,
1875                         account.getSelfAddress(),
1876                         ignoreAttachments));
1877             }
1878             if (content.getSyncMessage().isPresent()) {
1879                 account.setMultiDevice(true);
1880                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1881                 if (syncMessage.getSent().isPresent()) {
1882                     SentTranscriptMessage message = syncMessage.getSent().get();
1883                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
1884                             true,
1885                             sender,
1886                             message.getDestination().orNull(),
1887                             ignoreAttachments));
1888                 }
1889                 if (syncMessage.getRequest().isPresent()) {
1890                     RequestMessage rm = syncMessage.getRequest().get();
1891                     if (rm.isContactsRequest()) {
1892                         actions.add(SendSyncContactsAction.create());
1893                     }
1894                     if (rm.isGroupsRequest()) {
1895                         actions.add(SendSyncGroupsAction.create());
1896                     }
1897                     if (rm.isBlockedListRequest()) {
1898                         actions.add(SendSyncBlockedListAction.create());
1899                     }
1900                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
1901                 }
1902                 if (syncMessage.getGroups().isPresent()) {
1903                     File tmpFile = null;
1904                     try {
1905                         tmpFile = IOUtils.createTempFile();
1906                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups()
1907                                 .get()
1908                                 .asPointer(), tmpFile)) {
1909                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1910                             DeviceGroup g;
1911                             while ((g = s.read()) != null) {
1912                                 GroupInfoV1 syncGroup = account.getGroupStore().getOrCreateGroupV1(g.getId());
1913                                 if (syncGroup != null) {
1914                                     if (g.getName().isPresent()) {
1915                                         syncGroup.name = g.getName().get();
1916                                     }
1917                                     syncGroup.addMembers(g.getMembers()
1918                                             .stream()
1919                                             .map(this::resolveSignalServiceAddress)
1920                                             .collect(Collectors.toSet()));
1921                                     if (!g.isActive()) {
1922                                         syncGroup.removeMember(account.getSelfAddress());
1923                                     } else {
1924                                         // Add ourself to the member set as it's marked as active
1925                                         syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1926                                     }
1927                                     syncGroup.blocked = g.isBlocked();
1928                                     if (g.getColor().isPresent()) {
1929                                         syncGroup.color = g.getColor().get();
1930                                     }
1931
1932                                     if (g.getAvatar().isPresent()) {
1933                                         retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1934                                     }
1935                                     syncGroup.inboxPosition = g.getInboxPosition().orNull();
1936                                     syncGroup.archived = g.isArchived();
1937                                     account.getGroupStore().updateGroup(syncGroup);
1938                                 }
1939                             }
1940                         }
1941                     } catch (Exception e) {
1942                         e.printStackTrace();
1943                     } finally {
1944                         if (tmpFile != null) {
1945                             try {
1946                                 Files.delete(tmpFile.toPath());
1947                             } catch (IOException e) {
1948                                 System.err.println("Failed to delete received groups temp file “"
1949                                         + tmpFile
1950                                         + "”: "
1951                                         + e.getMessage());
1952                             }
1953                         }
1954                     }
1955                 }
1956                 if (syncMessage.getBlockedList().isPresent()) {
1957                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1958                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1959                         setContactBlocked(resolveSignalServiceAddress(address), true);
1960                     }
1961                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1962                         try {
1963                             setGroupBlocked(groupId, true);
1964                         } catch (GroupNotFoundException e) {
1965                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: "
1966                                     + Base64.encodeBytes(groupId));
1967                         }
1968                     }
1969                 }
1970                 if (syncMessage.getContacts().isPresent()) {
1971                     File tmpFile = null;
1972                     try {
1973                         tmpFile = IOUtils.createTempFile();
1974                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1975                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
1976                                 .asPointer(), tmpFile)) {
1977                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1978                             if (contactsMessage.isComplete()) {
1979                                 account.getContactStore().clear();
1980                             }
1981                             DeviceContact c;
1982                             while ((c = s.read()) != null) {
1983                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1984                                     account.setProfileKey(c.getProfileKey().get());
1985                                 }
1986                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1987                                 ContactInfo contact = account.getContactStore().getContact(address);
1988                                 if (contact == null) {
1989                                     contact = new ContactInfo(address);
1990                                 }
1991                                 if (c.getName().isPresent()) {
1992                                     contact.name = c.getName().get();
1993                                 }
1994                                 if (c.getColor().isPresent()) {
1995                                     contact.color = c.getColor().get();
1996                                 }
1997                                 if (c.getProfileKey().isPresent()) {
1998                                     account.getProfileStore().storeProfileKey(address, c.getProfileKey().get());
1999                                 }
2000                                 if (c.getVerified().isPresent()) {
2001                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
2002                                     account.getSignalProtocolStore()
2003                                             .setIdentityTrustLevel(verifiedMessage.getDestination(),
2004                                                     verifiedMessage.getIdentityKey(),
2005                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2006                                 }
2007                                 if (c.getExpirationTimer().isPresent()) {
2008                                     contact.messageExpirationTime = c.getExpirationTimer().get();
2009                                 }
2010                                 contact.blocked = c.isBlocked();
2011                                 contact.inboxPosition = c.getInboxPosition().orNull();
2012                                 contact.archived = c.isArchived();
2013                                 account.getContactStore().updateContact(contact);
2014
2015                                 if (c.getAvatar().isPresent()) {
2016                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
2017                                 }
2018                             }
2019                         }
2020                     } catch (Exception e) {
2021                         e.printStackTrace();
2022                     } finally {
2023                         if (tmpFile != null) {
2024                             try {
2025                                 Files.delete(tmpFile.toPath());
2026                             } catch (IOException e) {
2027                                 System.err.println("Failed to delete received contacts temp file “"
2028                                         + tmpFile
2029                                         + "”: "
2030                                         + e.getMessage());
2031                             }
2032                         }
2033                     }
2034                 }
2035                 if (syncMessage.getVerified().isPresent()) {
2036                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
2037                     account.getSignalProtocolStore()
2038                             .setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()),
2039                                     verifiedMessage.getIdentityKey(),
2040                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2041                 }
2042                 if (syncMessage.getStickerPackOperations().isPresent()) {
2043                     final List<StickerPackOperationMessage> stickerPackOperationMessages = syncMessage.getStickerPackOperations()
2044                             .get();
2045                     for (StickerPackOperationMessage m : stickerPackOperationMessages) {
2046                         if (!m.getPackId().isPresent()) {
2047                             continue;
2048                         }
2049                         Sticker sticker = account.getStickerStore().getSticker(m.getPackId().get());
2050                         if (sticker == null) {
2051                             if (!m.getPackKey().isPresent()) {
2052                                 continue;
2053                             }
2054                             sticker = new Sticker(m.getPackId().get(), m.getPackKey().get());
2055                         }
2056                         sticker.setInstalled(!m.getType().isPresent()
2057                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2058                         account.getStickerStore().updateSticker(sticker);
2059                     }
2060                 }
2061                 if (syncMessage.getConfiguration().isPresent()) {
2062                     // TODO
2063                 }
2064             }
2065         }
2066         return actions;
2067     }
2068
2069     private File getContactAvatarFile(String number) {
2070         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
2071     }
2072
2073     private File retrieveContactAvatarAttachment(
2074             SignalServiceAttachment attachment, String number
2075     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2076         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2077         if (attachment.isPointer()) {
2078             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2079             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
2080         } else {
2081             SignalServiceAttachmentStream stream = attachment.asStream();
2082             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
2083         }
2084     }
2085
2086     private File getGroupAvatarFile(byte[] groupId) {
2087         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
2088     }
2089
2090     private File retrieveGroupAvatarAttachment(
2091             SignalServiceAttachment attachment, byte[] groupId
2092     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2093         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2094         if (attachment.isPointer()) {
2095             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2096             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
2097         } else {
2098             SignalServiceAttachmentStream stream = attachment.asStream();
2099             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
2100         }
2101     }
2102
2103     private File getProfileAvatarFile(SignalServiceAddress address) {
2104         return new File(pathConfig.getAvatarsPath(), "profile-" + address.getLegacyIdentifier());
2105     }
2106
2107     private File retrieveProfileAvatar(
2108             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2109     ) throws IOException {
2110         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2111         SignalServiceMessageReceiver receiver = getOrCreateMessageReceiver();
2112         File outputFile = getProfileAvatarFile(address);
2113
2114         File tmpFile = IOUtils.createTempFile();
2115         try (InputStream input = receiver.retrieveProfileAvatar(avatarPath,
2116                 tmpFile,
2117                 profileKey,
2118                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2119             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2120             IOUtils.copyStreamToFile(input, outputFile, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2121         } finally {
2122             try {
2123                 Files.delete(tmpFile.toPath());
2124             } catch (IOException e) {
2125                 System.err.println("Failed to delete received avatar temp file “" + tmpFile + "”: " + e.getMessage());
2126             }
2127         }
2128         return outputFile;
2129     }
2130
2131     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2132         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
2133     }
2134
2135     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
2136         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
2137         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
2138     }
2139
2140     private File retrieveAttachment(
2141             SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview
2142     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2143         if (storePreview && pointer.getPreview().isPresent()) {
2144             File previewFile = new File(outputFile + ".preview");
2145             try (OutputStream output = new FileOutputStream(previewFile)) {
2146                 byte[] preview = pointer.getPreview().get();
2147                 output.write(preview, 0, preview.length);
2148             } catch (FileNotFoundException e) {
2149                 e.printStackTrace();
2150                 return null;
2151             }
2152         }
2153
2154         final SignalServiceMessageReceiver messageReceiver = getOrCreateMessageReceiver();
2155
2156         File tmpFile = IOUtils.createTempFile();
2157         try (InputStream input = messageReceiver.retrieveAttachment(pointer,
2158                 tmpFile,
2159                 ServiceConfig.MAX_ATTACHMENT_SIZE)) {
2160             IOUtils.copyStreamToFile(input, outputFile);
2161         } finally {
2162             try {
2163                 Files.delete(tmpFile.toPath());
2164             } catch (IOException e) {
2165                 System.err.println("Failed to delete received attachment temp file “"
2166                         + tmpFile
2167                         + "”: "
2168                         + e.getMessage());
2169             }
2170         }
2171         return outputFile;
2172     }
2173
2174     private InputStream retrieveAttachmentAsStream(
2175             SignalServiceAttachmentPointer pointer, File tmpFile
2176     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2177         final SignalServiceMessageReceiver messageReceiver = getOrCreateMessageReceiver();
2178         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2179     }
2180
2181     void sendGroups() throws IOException, UntrustedIdentityException {
2182         File groupsFile = IOUtils.createTempFile();
2183
2184         try {
2185             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2186                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
2187                 for (GroupInfo record : account.getGroupStore().getGroups()) {
2188                     if (record instanceof GroupInfoV1) {
2189                         GroupInfoV1 groupInfo = (GroupInfoV1) record;
2190                         out.write(new DeviceGroup(groupInfo.groupId,
2191                                 Optional.fromNullable(groupInfo.name),
2192                                 new ArrayList<>(groupInfo.getMembers()),
2193                                 createGroupAvatarAttachment(groupInfo.groupId),
2194                                 groupInfo.isMember(account.getSelfAddress()),
2195                                 Optional.of(groupInfo.messageExpirationTime),
2196                                 Optional.fromNullable(groupInfo.color),
2197                                 groupInfo.blocked,
2198                                 Optional.fromNullable(groupInfo.inboxPosition),
2199                                 groupInfo.archived));
2200                     }
2201                 }
2202             }
2203
2204             if (groupsFile.exists() && groupsFile.length() > 0) {
2205                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
2206                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2207                             .withStream(groupsFileStream)
2208                             .withContentType("application/octet-stream")
2209                             .withLength(groupsFile.length())
2210                             .build();
2211
2212                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2213                 }
2214             }
2215         } finally {
2216             try {
2217                 Files.delete(groupsFile.toPath());
2218             } catch (IOException e) {
2219                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
2220             }
2221         }
2222     }
2223
2224     public void sendContacts() throws IOException, UntrustedIdentityException {
2225         File contactsFile = IOUtils.createTempFile();
2226
2227         try {
2228             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2229                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
2230                 for (ContactInfo record : account.getContactStore().getContacts()) {
2231                     VerifiedMessage verifiedMessage = null;
2232                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore()
2233                             .getIdentity(record.getAddress());
2234                     if (currentIdentity != null) {
2235                         verifiedMessage = new VerifiedMessage(record.getAddress(),
2236                                 currentIdentity.getIdentityKey(),
2237                                 currentIdentity.getTrustLevel().toVerifiedState(),
2238                                 currentIdentity.getDateAdded().getTime());
2239                     }
2240
2241                     ProfileKey profileKey = account.getProfileStore().getProfileKey(record.getAddress());
2242                     out.write(new DeviceContact(record.getAddress(),
2243                             Optional.fromNullable(record.name),
2244                             createContactAvatarAttachment(record.number),
2245                             Optional.fromNullable(record.color),
2246                             Optional.fromNullable(verifiedMessage),
2247                             Optional.fromNullable(profileKey),
2248                             record.blocked,
2249                             Optional.of(record.messageExpirationTime),
2250                             Optional.fromNullable(record.inboxPosition),
2251                             record.archived));
2252                 }
2253
2254                 if (account.getProfileKey() != null) {
2255                     // Send our own profile key as well
2256                     out.write(new DeviceContact(account.getSelfAddress(),
2257                             Optional.absent(),
2258                             Optional.absent(),
2259                             Optional.absent(),
2260                             Optional.absent(),
2261                             Optional.of(account.getProfileKey()),
2262                             false,
2263                             Optional.absent(),
2264                             Optional.absent(),
2265                             false));
2266                 }
2267             }
2268
2269             if (contactsFile.exists() && contactsFile.length() > 0) {
2270                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
2271                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2272                             .withStream(contactsFileStream)
2273                             .withContentType("application/octet-stream")
2274                             .withLength(contactsFile.length())
2275                             .build();
2276
2277                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2278                 }
2279             }
2280         } finally {
2281             try {
2282                 Files.delete(contactsFile.toPath());
2283             } catch (IOException e) {
2284                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
2285             }
2286         }
2287     }
2288
2289     void sendBlockedList() throws IOException, UntrustedIdentityException {
2290         List<SignalServiceAddress> addresses = new ArrayList<>();
2291         for (ContactInfo record : account.getContactStore().getContacts()) {
2292             if (record.blocked) {
2293                 addresses.add(record.getAddress());
2294             }
2295         }
2296         List<byte[]> groupIds = new ArrayList<>();
2297         for (GroupInfo record : account.getGroupStore().getGroups()) {
2298             if (record.isBlocked()) {
2299                 groupIds.add(record.groupId);
2300             }
2301         }
2302         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2303     }
2304
2305     private void sendVerifiedMessage(
2306             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2307     ) throws IOException, UntrustedIdentityException {
2308         VerifiedMessage verifiedMessage = new VerifiedMessage(destination,
2309                 identityKey,
2310                 trustLevel.toVerifiedState(),
2311                 System.currentTimeMillis());
2312         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2313     }
2314
2315     public List<ContactInfo> getContacts() {
2316         return account.getContactStore().getContacts();
2317     }
2318
2319     public ContactInfo getContact(String number) {
2320         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
2321     }
2322
2323     public GroupInfo getGroup(byte[] groupId) {
2324         return account.getGroupStore().getGroup(groupId);
2325     }
2326
2327     public List<JsonIdentityKeyStore.Identity> getIdentities() {
2328         return account.getSignalProtocolStore().getIdentities();
2329     }
2330
2331     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
2332         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
2333     }
2334
2335     /**
2336      * Trust this the identity with this fingerprint
2337      *
2338      * @param name        username of the identity
2339      * @param fingerprint Fingerprint
2340      */
2341     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2342         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2343         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2344         if (ids == null) {
2345             return false;
2346         }
2347         for (JsonIdentityKeyStore.Identity id : ids) {
2348             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
2349                 continue;
2350             }
2351
2352             account.getSignalProtocolStore()
2353                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2354             try {
2355                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2356             } catch (IOException | UntrustedIdentityException e) {
2357                 e.printStackTrace();
2358             }
2359             account.save();
2360             return true;
2361         }
2362         return false;
2363     }
2364
2365     /**
2366      * Trust this the identity with this safety number
2367      *
2368      * @param name         username of the identity
2369      * @param safetyNumber Safety number
2370      */
2371     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2372         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2373         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2374         if (ids == null) {
2375             return false;
2376         }
2377         for (JsonIdentityKeyStore.Identity id : ids) {
2378             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2379                 continue;
2380             }
2381
2382             account.getSignalProtocolStore()
2383                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2384             try {
2385                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2386             } catch (IOException | UntrustedIdentityException e) {
2387                 e.printStackTrace();
2388             }
2389             account.save();
2390             return true;
2391         }
2392         return false;
2393     }
2394
2395     /**
2396      * Trust all keys of this identity without verification
2397      *
2398      * @param name username of the identity
2399      */
2400     public boolean trustIdentityAllKeys(String name) {
2401         SignalServiceAddress address = resolveSignalServiceAddress(name);
2402         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2403         if (ids == null) {
2404             return false;
2405         }
2406         for (JsonIdentityKeyStore.Identity id : ids) {
2407             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2408                 account.getSignalProtocolStore()
2409                         .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2410                 try {
2411                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2412                 } catch (IOException | UntrustedIdentityException e) {
2413                     e.printStackTrace();
2414                 }
2415             }
2416         }
2417         account.save();
2418         return true;
2419     }
2420
2421     public String computeSafetyNumber(
2422             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2423     ) {
2424         return Utils.computeSafetyNumber(account.getSelfAddress(),
2425                 getIdentityKeyPair().getPublicKey(),
2426                 theirAddress,
2427                 theirIdentityKey);
2428     }
2429
2430     void saveAccount() {
2431         account.save();
2432     }
2433
2434     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2435         String canonicalizedNumber = UuidUtil.isUuid(identifier)
2436                 ? identifier
2437                 : Util.canonicalizeNumber(identifier, account.getUsername());
2438         return resolveSignalServiceAddress(canonicalizedNumber);
2439     }
2440
2441     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2442         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2443
2444         return resolveSignalServiceAddress(address);
2445     }
2446
2447     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2448         if (address.matches(account.getSelfAddress())) {
2449             return account.getSelfAddress();
2450         }
2451
2452         return account.getRecipientStore().resolveServiceAddress(address);
2453     }
2454
2455     @Override
2456     public void close() throws IOException {
2457         if (messagePipe != null) {
2458             messagePipe.shutdown();
2459             messagePipe = null;
2460         }
2461
2462         if (unidentifiedMessagePipe != null) {
2463             unidentifiedMessagePipe.shutdown();
2464             unidentifiedMessagePipe = null;
2465         }
2466
2467         account.close();
2468     }
2469
2470     public interface ReceiveMessageHandler {
2471
2472         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2473     }
2474 }