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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.signal.manager.helper.GroupHelper;
  22 import org.asamk.signal.manager.helper.ProfileHelper;
  23 import org.asamk.signal.manager.helper.UnidentifiedAccessHelper;
  24 import org.asamk.signal.storage.SignalAccount;
  25 import org.asamk.signal.storage.contacts.ContactInfo;
  26 import org.asamk.signal.storage.groups.GroupInfo;
  27 import org.asamk.signal.storage.groups.GroupInfoV1;
  28 import org.asamk.signal.storage.groups.GroupInfoV2;
  29 import org.asamk.signal.storage.profiles.SignalProfile;
  30 import org.asamk.signal.storage.profiles.SignalProfileEntry;
  31 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  32 import org.asamk.signal.storage.stickers.Sticker;
  33 import org.asamk.signal.util.IOUtils;
  34 import org.asamk.signal.util.Util;
  35 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  36 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  37 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  38 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  39 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  40 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  41 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  42 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  43 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  44 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  45 import org.signal.libsignal.metadata.SelfSendException;
  46 import org.signal.storageservice.protos.groups.GroupChange;
  47 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
  48 import org.signal.storageservice.protos.groups.local.DecryptedMember;
  49 import org.signal.zkgroup.InvalidInputException;
  50 import org.signal.zkgroup.VerificationFailedException;
  51 import org.signal.zkgroup.auth.AuthCredentialResponse;
  52 import org.signal.zkgroup.groups.GroupMasterKey;
  53 import org.signal.zkgroup.groups.GroupSecretParams;
  54 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  55 import org.signal.zkgroup.profiles.ProfileKey;
  56 import org.signal.zkgroup.profiles.ProfileKeyCredential;
  57 import org.whispersystems.libsignal.IdentityKey;
  58 import org.whispersystems.libsignal.IdentityKeyPair;
  59 import org.whispersystems.libsignal.InvalidKeyException;
  60 import org.whispersystems.libsignal.InvalidMessageException;
  61 import org.whispersystems.libsignal.InvalidVersionException;
  62 import org.whispersystems.libsignal.ecc.Curve;
  63 import org.whispersystems.libsignal.ecc.ECKeyPair;
  64 import org.whispersystems.libsignal.ecc.ECPublicKey;
  65 import org.whispersystems.libsignal.state.PreKeyRecord;
  66 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  67 import org.whispersystems.libsignal.util.KeyHelper;
  68 import org.whispersystems.libsignal.util.Medium;
  69 import org.whispersystems.libsignal.util.Pair;
  70 import org.whispersystems.libsignal.util.guava.Optional;
  71 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  72 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  73 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  74 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  75 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  76 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  77 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  78 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  79 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  80 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  81 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Api;
  82 import org.whispersystems.signalservice.api.groupsv2.GroupsV2AuthorizationString;
  83 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  84 import org.whispersystems.signalservice.api.groupsv2.InvalidGroupStateException;
  85 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  86 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  87 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  88 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  89 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  90 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  91 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  92 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  93 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  94 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
  95 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  96 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  97 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  98 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  99 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
 100 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
 101 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
 102 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
 103 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
 104 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
 105 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
 106 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
 107 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
 108 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
 109 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
 110 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
 111 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 112 import org.whispersystems.signalservice.api.profiles.ProfileAndCredential;
 113 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 114 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
 115 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 116 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 117 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 118 import org.whispersystems.signalservice.api.util.SleepTimer;
 119 import org.whispersystems.signalservice.api.util.StreamDetails;
 120 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 121 import org.whispersystems.signalservice.api.util.UuidUtil;
 122 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 123 import org.whispersystems.signalservice.internal.contacts.crypto.Quote;
 124 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedQuoteException;
 125 import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 126 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 127 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 128 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 129 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 130 import org.whispersystems.signalservice.internal.util.Hex;
 131 import org.whispersystems.util.Base64;
 132
 133 import java.io.Closeable;
 134 import java.io.File;
 135 import java.io.FileInputStream;
 136 import java.io.FileNotFoundException;
 137 import java.io.FileOutputStream;
 138 import java.io.IOException;
 139 import java.io.InputStream;
 140 import java.io.OutputStream;
 141 import java.net.URI;
 142 import java.net.URISyntaxException;
 143 import java.net.URLEncoder;
 144 import java.nio.charset.StandardCharsets;
 145 import java.nio.file.Files;
 146 import java.nio.file.Paths;
 147 import java.nio.file.StandardCopyOption;
 148 import java.security.SignatureException;
 149 import java.util.ArrayList;
 150 import java.util.Arrays;
 151 import java.util.Collection;
 152 import java.util.Collections;
 153 import java.util.Date;
 154 import java.util.HashMap;
 155 import java.util.HashSet;
 156 import java.util.List;
 157 import java.util.Locale;
 158 import java.util.Map;
 159 import java.util.Objects;
 160 import java.util.Set;
 161 import java.util.UUID;
 162 import java.util.concurrent.ExecutorService;
 163 import java.util.concurrent.TimeUnit;
 164 import java.util.concurrent.TimeoutException;
 165 import java.util.stream.Collectors;
 166 import java.util.zip.ZipEntry;
 167 import java.util.zip.ZipFile;
 168
 169 import static org.asamk.signal.manager.ServiceConfig.CDS_MRENCLAVE;
 170 import static org.asamk.signal.manager.ServiceConfig.capabilities;
 171 import static org.asamk.signal.manager.ServiceConfig.getIasKeyStore;
 172
 173 public class Manager implements Closeable {
 174
 175     private final SleepTimer timer = new UptimeSleepTimer();
 176
 177     private final SignalServiceConfiguration serviceConfiguration;
 178     private final String userAgent;
 179     private final boolean discoverableByPhoneNumber = true;
 180     private final boolean unrestrictedUnidentifiedAccess = false;
 181
 182     private final SignalAccount account;
 183     private final PathConfig pathConfig;
 184     private SignalServiceAccountManager accountManager;
 185     private GroupsV2Api groupsV2Api;
 186     private final GroupsV2Operations groupsV2Operations;
 187
 188     private SignalServiceMessageReceiver messageReceiver = null;
 189     private SignalServiceMessagePipe messagePipe = null;
 190     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 191
 192     private final UnidentifiedAccessHelper unidentifiedAccessHelper;
 193     private final ProfileHelper profileHelper;
 194     private final GroupHelper groupHelper;
 195
 196     public Manager(
 197             SignalAccount account,
 198             PathConfig pathConfig,
 199             SignalServiceConfiguration serviceConfiguration,
 200             String userAgent
 201     ) {
 202         this.account = account;
 203         this.pathConfig = pathConfig;
 204         this.serviceConfiguration = serviceConfiguration;
 205         this.userAgent = userAgent;
 206         this.groupsV2Operations = capabilities.isGv2() ? new GroupsV2Operations(ClientZkOperations.create(
 207                 serviceConfiguration)) : null;
 208         this.accountManager = createSignalServiceAccountManager();
 209         this.groupsV2Api = accountManager.getGroupsV2Api();
 210
 211         this.account.setResolver(this::resolveSignalServiceAddress);
 212
 213         this.unidentifiedAccessHelper = new UnidentifiedAccessHelper(account::getProfileKey,
 214                 account.getProfileStore()::getProfileKey,
 215                 this::getRecipientProfile,
 216                 this::getSenderCertificate);
 217         this.profileHelper = new ProfileHelper(account.getProfileStore()::getProfileKey,
 218                 unidentifiedAccessHelper::getAccessFor,
 219                 unidentified -> unidentified ? getOrCreateUnidentifiedMessagePipe() : getOrCreateMessagePipe(),
 220                 this::getOrCreateMessageReceiver);
 221         this.groupHelper = new GroupHelper(this::getRecipientProfileKeyCredential,
 222                 this::getRecipientProfile,
 223                 account::getSelfAddress,
 224                 groupsV2Operations,
 225                 groupsV2Api,
 226                 this::getGroupAuthForToday);
 227     }
 228
 229     public String getUsername() {
 230         return account.getUsername();
 231     }
 232
 233     public SignalServiceAddress getSelfAddress() {
 234         return account.getSelfAddress();
 235     }
 236
 237     private SignalServiceAccountManager createSignalServiceAccountManager() {
 238         return new SignalServiceAccountManager(serviceConfiguration,
 239                 new DynamicCredentialsProvider(account.getUuid(),
 240                         account.getUsername(),
 241                         account.getPassword(),
 242                         null,
 243                         account.getDeviceId()),
 244                 userAgent,
 245                 groupsV2Operations,
 246                 timer);
 247     }
 248
 249     private IdentityKeyPair getIdentityKeyPair() {
 250         return account.getSignalProtocolStore().getIdentityKeyPair();
 251     }
 252
 253     public int getDeviceId() {
 254         return account.getDeviceId();
 255     }
 256
 257     private String getMessageCachePath() {
 258         return pathConfig.getDataPath() + "/" + account.getUsername() + ".d/msg-cache";
 259     }
 260
 261     private String getMessageCachePath(String sender) {
 262         if (sender == null || sender.isEmpty()) {
 263             return getMessageCachePath();
 264         }
 265
 266         return getMessageCachePath() + "/" + sender.replace("/", "_");
 267     }
 268
 269     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 270         String cachePath = getMessageCachePath(sender);
 271         IOUtils.createPrivateDirectories(cachePath);
 272         return new File(cachePath + "/" + now + "_" + timestamp);
 273     }
 274
 275     public static Manager init(
 276             String username, String settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent
 277     ) throws IOException {
 278         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 279
 280         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 281             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 282             int registrationId = KeyHelper.generateRegistrationId(false);
 283
 284             ProfileKey profileKey = KeyUtils.createProfileKey();
 285             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(),
 286                     username,
 287                     identityKey,
 288                     registrationId,
 289                     profileKey);
 290             account.save();
 291
 292             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 293         }
 294
 295         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 296
 297         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 298
 299         m.migrateLegacyConfigs();
 300
 301         return m;
 302     }
 303
 304     private void migrateLegacyConfigs() {
 305         if (account.getProfileKey() == null && isRegistered()) {
 306             // Old config file, creating new profile key
 307             account.setProfileKey(KeyUtils.createProfileKey());
 308             account.save();
 309         }
 310         // Store profile keys only in profile store
 311         for (ContactInfo contact : account.getContactStore().getContacts()) {
 312             String profileKeyString = contact.profileKey;
 313             if (profileKeyString == null) {
 314                 continue;
 315             }
 316             final ProfileKey profileKey;
 317             try {
 318                 profileKey = new ProfileKey(Base64.decode(profileKeyString));
 319             } catch (InvalidInputException | IOException e) {
 320                 continue;
 321             }
 322             contact.profileKey = null;
 323             account.getProfileStore().storeProfileKey(contact.getAddress(), profileKey);
 324         }
 325     }
 326
 327     public void checkAccountState() throws IOException {
 328         if (account.isRegistered()) {
 329             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 330                 refreshPreKeys();
 331                 account.save();
 332             }
 333             if (account.getUuid() == null) {
 334                 account.setUuid(accountManager.getOwnUuid());
 335                 account.save();
 336             }
 337             updateAccountAttributes();
 338         }
 339     }
 340
 341     public boolean isRegistered() {
 342         return account.isRegistered();
 343     }
 344
 345     public void register(boolean voiceVerification, String captcha) throws IOException {
 346         account.setPassword(KeyUtils.createPassword());
 347
 348         // Resetting UUID, because registering doesn't work otherwise
 349         account.setUuid(null);
 350         accountManager = createSignalServiceAccountManager();
 351         this.groupsV2Api = accountManager.getGroupsV2Api();
 352
 353         if (voiceVerification) {
 354             accountManager.requestVoiceVerificationCode(Locale.getDefault(),
 355                     Optional.fromNullable(captcha),
 356                     Optional.absent());
 357         } else {
 358             accountManager.requestSmsVerificationCode(false, Optional.fromNullable(captcha), Optional.absent());
 359         }
 360
 361         account.setRegistered(false);
 362         account.save();
 363     }
 364
 365     public void updateAccountAttributes() throws IOException {
 366         accountManager.setAccountAttributes(account.getSignalingKey(),
 367                 account.getSignalProtocolStore().getLocalRegistrationId(),
 368                 true,
 369                 account.getRegistrationLockPin(),
 370                 account.getRegistrationLock(),
 371                 unidentifiedAccessHelper.getSelfUnidentifiedAccessKey(),
 372                 unrestrictedUnidentifiedAccess,
 373                 capabilities,
 374                 discoverableByPhoneNumber);
 375     }
 376
 377     public void setProfile(String name, File avatar) throws IOException {
 378         try (final StreamDetails streamDetails = avatar == null ? null : Utils.createStreamDetailsFromFile(avatar)) {
 379             accountManager.setVersionedProfile(account.getUuid(), account.getProfileKey(), name, streamDetails);
 380         }
 381     }
 382
 383     public void unregister() throws IOException {
 384         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 385         // If this is the master device, other users can't send messages to this number anymore.
 386         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 387         accountManager.setGcmId(Optional.absent());
 388
 389         account.setRegistered(false);
 390         account.save();
 391     }
 392
 393     public List<DeviceInfo> getLinkedDevices() throws IOException {
 394         List<DeviceInfo> devices = accountManager.getDevices();
 395         account.setMultiDevice(devices.size() > 1);
 396         account.save();
 397         return devices;
 398     }
 399
 400     public void removeLinkedDevices(int deviceId) throws IOException {
 401         accountManager.removeDevice(deviceId);
 402         List<DeviceInfo> devices = accountManager.getDevices();
 403         account.setMultiDevice(devices.size() > 1);
 404         account.save();
 405     }
 406
 407     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 408         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 409
 410         addDevice(info.deviceIdentifier, info.deviceKey);
 411     }
 412
 413     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 414         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 415         String verificationCode = accountManager.getNewDeviceVerificationCode();
 416
 417         accountManager.addDevice(deviceIdentifier,
 418                 deviceKey,
 419                 identityKeyPair,
 420                 Optional.of(account.getProfileKey().serialize()),
 421                 verificationCode);
 422         account.setMultiDevice(true);
 423         account.save();
 424     }
 425
 426     private List<PreKeyRecord> generatePreKeys() {
 427         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 428
 429         final int offset = account.getPreKeyIdOffset();
 430         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 431             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 432             ECKeyPair keyPair = Curve.generateKeyPair();
 433             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 434
 435             records.add(record);
 436         }
 437
 438         account.addPreKeys(records);
 439         account.save();
 440
 441         return records;
 442     }
 443
 444     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 445         try {
 446             ECKeyPair keyPair = Curve.generateKeyPair();
 447             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(),
 448                     keyPair.getPublicKey().serialize());
 449             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(),
 450                     System.currentTimeMillis(),
 451                     keyPair,
 452                     signature);
 453
 454             account.addSignedPreKey(record);
 455             account.save();
 456
 457             return record;
 458         } catch (InvalidKeyException e) {
 459             throw new AssertionError(e);
 460         }
 461     }
 462
 463     public void verifyAccount(String verificationCode, String pin) throws IOException {
 464         verificationCode = verificationCode.replace("-", "");
 465         account.setSignalingKey(KeyUtils.createSignalingKey());
 466         // TODO make unrestricted unidentified access configurable
 467         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode,
 468                 account.getSignalingKey(),
 469                 account.getSignalProtocolStore().getLocalRegistrationId(),
 470                 true,
 471                 pin,
 472                 null,
 473                 unidentifiedAccessHelper.getSelfUnidentifiedAccessKey(),
 474                 unrestrictedUnidentifiedAccess,
 475                 capabilities,
 476                 discoverableByPhoneNumber);
 477
 478         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 479         // TODO response.isStorageCapable()
 480         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 481         account.setRegistered(true);
 482         account.setUuid(uuid);
 483         account.setRegistrationLockPin(pin);
 484         account.getSignalProtocolStore()
 485                 .saveIdentity(account.getSelfAddress(),
 486                         getIdentityKeyPair().getPublicKey(),
 487                         TrustLevel.TRUSTED_VERIFIED);
 488
 489         refreshPreKeys();
 490         account.save();
 491     }
 492
 493     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 494         if (pin.isPresent()) {
 495             account.setRegistrationLockPin(pin.get());
 496             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 497         } else {
 498             account.setRegistrationLockPin(null);
 499             accountManager.removeRegistrationLockV1();
 500         }
 501         account.save();
 502     }
 503
 504     void refreshPreKeys() throws IOException {
 505         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 506         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 507         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 508
 509         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 510     }
 511
 512     private SignalServiceMessageReceiver createMessageReceiver() {
 513         final ClientZkProfileOperations clientZkProfileOperations = capabilities.isGv2() ? ClientZkOperations.create(
 514                 serviceConfiguration).getProfileOperations() : null;
 515         return new SignalServiceMessageReceiver(serviceConfiguration,
 516                 account.getUuid(),
 517                 account.getUsername(),
 518                 account.getPassword(),
 519                 account.getDeviceId(),
 520                 account.getSignalingKey(),
 521                 userAgent,
 522                 null,
 523                 timer,
 524                 clientZkProfileOperations);
 525     }
 526
 527     private SignalServiceMessageReceiver getOrCreateMessageReceiver() {
 528         if (messageReceiver == null) {
 529             messageReceiver = createMessageReceiver();
 530         }
 531         return messageReceiver;
 532     }
 533
 534     private SignalServiceMessagePipe getOrCreateMessagePipe() {
 535         if (messagePipe == null) {
 536             messagePipe = getOrCreateMessageReceiver().createMessagePipe();
 537         }
 538         return messagePipe;
 539     }
 540
 541     private SignalServiceMessagePipe getOrCreateUnidentifiedMessagePipe() {
 542         if (unidentifiedMessagePipe == null) {
 543             unidentifiedMessagePipe = getOrCreateMessageReceiver().createUnidentifiedMessagePipe();
 544         }
 545         return unidentifiedMessagePipe;
 546     }
 547
 548     private SignalServiceMessageSender createMessageSender() {
 549         final ClientZkProfileOperations clientZkProfileOperations = capabilities.isGv2() ? ClientZkOperations.create(
 550                 serviceConfiguration).getProfileOperations() : null;
 551         final ExecutorService executor = null;
 552         return new SignalServiceMessageSender(serviceConfiguration,
 553                 account.getUuid(),
 554                 account.getUsername(),
 555                 account.getPassword(),
 556                 account.getDeviceId(),
 557                 account.getSignalProtocolStore(),
 558                 userAgent,
 559                 account.isMultiDevice(),
 560                 Optional.fromNullable(messagePipe),
 561                 Optional.fromNullable(unidentifiedMessagePipe),
 562                 Optional.absent(),
 563                 clientZkProfileOperations,
 564                 executor,
 565                 ServiceConfig.MAX_ENVELOPE_SIZE);
 566     }
 567
 568     private SignalServiceProfile getEncryptedRecipientProfile(SignalServiceAddress address) throws IOException {
 569         return profileHelper.retrieveProfileSync(address, SignalServiceProfile.RequestType.PROFILE).getProfile();
 570     }
 571
 572     private SignalProfile getRecipientProfile(
 573             SignalServiceAddress address
 574     ) {
 575         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 576         if (profileEntry == null) {
 577             return null;
 578         }
 579         long now = new Date().getTime();
 580         // Profiles are cache for 24h before retrieving them again
 581         if (!profileEntry.isRequestPending() && (
 582                 profileEntry.getProfile() == null || now - profileEntry.getLastUpdateTimestamp() > 24 * 60 * 60 * 1000
 583         )) {
 584             ProfileKey profileKey = profileEntry.getProfileKey();
 585             profileEntry.setRequestPending(true);
 586             SignalProfile profile;
 587             try {
 588                 profile = retrieveRecipientProfile(address, profileKey);
 589             } catch (IOException e) {
 590                 System.err.println("Failed to retrieve profile, ignoring: " + e.getMessage());
 591                 profileEntry.setRequestPending(false);
 592                 return null;
 593             }
 594             profileEntry.setRequestPending(false);
 595             account.getProfileStore()
 596                     .updateProfile(address, profileKey, now, profile, profileEntry.getProfileKeyCredential());
 597             return profile;
 598         }
 599         return profileEntry.getProfile();
 600     }
 601
 602     private ProfileKeyCredential getRecipientProfileKeyCredential(SignalServiceAddress address) {
 603         SignalProfileEntry profileEntry = account.getProfileStore().getProfileEntry(address);
 604         if (profileEntry == null) {
 605             return null;
 606         }
 607         if (profileEntry.getProfileKeyCredential() == null) {
 608             ProfileAndCredential profileAndCredential;
 609             try {
 610                 profileAndCredential = profileHelper.retrieveProfileSync(address,
 611                         SignalServiceProfile.RequestType.PROFILE_AND_CREDENTIAL);
 612             } catch (IOException e) {
 613                 System.err.println("Failed to retrieve profile key credential, ignoring: " + e.getMessage());
 614                 return null;
 615             }
 616
 617             long now = new Date().getTime();
 618             final ProfileKeyCredential profileKeyCredential = profileAndCredential.getProfileKeyCredential().orNull();
 619             final SignalProfile profile = decryptProfile(address,
 620                     profileEntry.getProfileKey(),
 621                     profileAndCredential.getProfile());
 622             account.getProfileStore()
 623                     .updateProfile(address, profileEntry.getProfileKey(), now, profile, profileKeyCredential);
 624             return profileKeyCredential;
 625         }
 626         return profileEntry.getProfileKeyCredential();
 627     }
 628
 629     private SignalProfile retrieveRecipientProfile(
 630             SignalServiceAddress address, ProfileKey profileKey
 631     ) throws IOException {
 632         final SignalServiceProfile encryptedProfile = getEncryptedRecipientProfile(address);
 633
 634         return decryptProfile(address, profileKey, encryptedProfile);
 635     }
 636
 637     private SignalProfile decryptProfile(
 638             final SignalServiceAddress address, final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
 639     ) {
 640         File avatarFile = null;
 641         try {
 642             avatarFile = encryptedProfile.getAvatar() == null
 643                     ? null
 644                     : retrieveProfileAvatar(address, encryptedProfile.getAvatar(), profileKey);
 645         } catch (Throwable e) {
 646             System.err.println("Failed to retrieve profile avatar, ignoring: " + e.getMessage());
 647         }
 648
 649         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 650         try {
 651             String name;
 652             try {
 653                 name = encryptedProfile.getName() == null
 654                         ? null
 655                         : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName())));
 656             } catch (IOException e) {
 657                 name = null;
 658             }
 659             String unidentifiedAccess;
 660             try {
 661                 unidentifiedAccess = encryptedProfile.getUnidentifiedAccess() == null
 662                         || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess()))
 663                         ? null
 664                         : encryptedProfile.getUnidentifiedAccess();
 665             } catch (IOException e) {
 666                 unidentifiedAccess = null;
 667             }
 668             return new SignalProfile(encryptedProfile.getIdentityKey(),
 669                     name,
 670                     avatarFile,
 671                     unidentifiedAccess,
 672                     encryptedProfile.isUnrestrictedUnidentifiedAccess(),
 673                     encryptedProfile.getCapabilities());
 674         } catch (InvalidCiphertextException e) {
 675             return null;
 676         }
 677     }
 678
 679     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 680         File file = getGroupAvatarFile(groupId);
 681         if (!file.exists()) {
 682             return Optional.absent();
 683         }
 684
 685         return Optional.of(Utils.createAttachment(file));
 686     }
 687
 688     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 689         File file = getContactAvatarFile(number);
 690         if (!file.exists()) {
 691             return Optional.absent();
 692         }
 693
 694         return Optional.of(Utils.createAttachment(file));
 695     }
 696
 697     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 698         GroupInfo g = account.getGroupStore().getGroup(groupId);
 699         if (g == null) {
 700             throw new GroupNotFoundException(groupId);
 701         }
 702         if (!g.isMember(account.getSelfAddress())) {
 703             throw new NotAGroupMemberException(groupId, g.getTitle());
 704         }
 705         return g;
 706     }
 707
 708     public List<GroupInfo> getGroups() {
 709         return account.getGroupStore().getGroups();
 710     }
 711
 712     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 713             SignalServiceDataMessage.Builder messageBuilder, byte[] groupId
 714     ) throws IOException, GroupNotFoundException, NotAGroupMemberException {
 715         final GroupInfo g = getGroupForSending(groupId);
 716
 717         GroupUtils.setGroupContext(messageBuilder, g);
 718         messageBuilder.withExpiration(g.getMessageExpirationTime());
 719
 720         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 721     }
 722
 723     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 724             String messageText, List<String> attachments, byte[] groupId
 725     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 726         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 727                 .withBody(messageText);
 728         if (attachments != null) {
 729             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 730         }
 731
 732         return sendGroupMessage(messageBuilder, groupId);
 733     }
 734
 735     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(
 736             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, byte[] groupId
 737     ) throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 738         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
 739                 remove,
 740                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 741                 targetSentTimestamp);
 742         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 743                 .withReaction(reaction);
 744
 745         return sendGroupMessage(messageBuilder, groupId);
 746     }
 747
 748     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 749
 750         SignalServiceDataMessage.Builder messageBuilder;
 751
 752         final GroupInfo g = getGroupForSending(groupId);
 753         if (g instanceof GroupInfoV1) {
 754             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
 755             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 756                     .withId(groupId)
 757                     .build();
 758             messageBuilder = SignalServiceDataMessage.newBuilder().asGroupMessage(group);
 759             groupInfoV1.removeMember(account.getSelfAddress());
 760             account.getGroupStore().updateGroup(groupInfoV1);
 761         } else {
 762             final GroupInfoV2 groupInfoV2 = (GroupInfoV2) g;
 763             final Pair<DecryptedGroup, GroupChange> groupGroupChangePair = groupHelper.leaveGroup(groupInfoV2);
 764             groupInfoV2.setGroup(groupGroupChangePair.first());
 765             messageBuilder = getGroupUpdateMessageBuilder(groupInfoV2, groupGroupChangePair.second().toByteArray());
 766             account.getGroupStore().updateGroup(groupInfoV2);
 767         }
 768
 769         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 770     }
 771
 772     private Pair<byte[], List<SendMessageResult>> sendUpdateGroupMessage(
 773             byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile
 774     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 775         GroupInfo g;
 776         SignalServiceDataMessage.Builder messageBuilder;
 777         if (groupId == null) {
 778             // Create new group
 779             GroupInfoV2 gv2 = groupHelper.createGroupV2(name, members, avatarFile);
 780             if (gv2 == null) {
 781                 GroupInfoV1 gv1 = new GroupInfoV1(KeyUtils.createGroupId());
 782                 gv1.addMembers(Collections.singleton(account.getSelfAddress()));
 783                 updateGroupV1(gv1, name, members, avatarFile);
 784                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 785                 g = gv1;
 786             } else {
 787                 messageBuilder = getGroupUpdateMessageBuilder(gv2, null);
 788                 g = gv2;
 789             }
 790         } else {
 791             GroupInfo group = getGroupForSending(groupId);
 792             if (group instanceof GroupInfoV2) {
 793                 Pair<DecryptedGroup, GroupChange> groupGroupChangePair = null;
 794                 if (members != null) {
 795                     final Set<SignalServiceAddress> newMembers = new HashSet<>(members);
 796                     newMembers.removeAll(group.getMembers());
 797                     if (newMembers.size() > 0) {
 798                         groupGroupChangePair = groupHelper.updateGroupV2((GroupInfoV2) group, newMembers);
 799                     }
 800                 }
 801                 if (groupGroupChangePair == null || name != null || avatarFile != null) {
 802                     if (groupGroupChangePair != null) {
 803                         ((GroupInfoV2) group).setGroup(groupGroupChangePair.first());
 804                         messageBuilder = getGroupUpdateMessageBuilder((GroupInfoV2) group,
 805                                 groupGroupChangePair.second().toByteArray());
 806                         sendMessage(messageBuilder, group.getMembersWithout(account.getSelfAddress()));
 807                     }
 808
 809                     groupGroupChangePair = groupHelper.updateGroupV2((GroupInfoV2) group, name, avatarFile);
 810                 }
 811
 812                 ((GroupInfoV2) group).setGroup(groupGroupChangePair.first());
 813                 messageBuilder = getGroupUpdateMessageBuilder((GroupInfoV2) group,
 814                         groupGroupChangePair.second().toByteArray());
 815                 g = group;
 816             } else {
 817                 GroupInfoV1 gv1 = (GroupInfoV1) group;
 818                 updateGroupV1(gv1, name, members, avatarFile);
 819                 messageBuilder = getGroupUpdateMessageBuilder(gv1);
 820                 g = gv1;
 821             }
 822         }
 823
 824         account.getGroupStore().updateGroup(g);
 825
 826         final Pair<Long, List<SendMessageResult>> result = sendMessage(messageBuilder,
 827                 g.getMembersWithout(account.getSelfAddress()));
 828         return new Pair<>(g.groupId, result.second());
 829     }
 830
 831     private void updateGroupV1(
 832             final GroupInfoV1 g,
 833             final String name,
 834             final Collection<SignalServiceAddress> members,
 835             final String avatarFile
 836     ) throws IOException {
 837         if (name != null) {
 838             g.name = name;
 839         }
 840
 841         if (members != null) {
 842             final Set<String> newE164Members = new HashSet<>();
 843             for (SignalServiceAddress member : members) {
 844                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 845                     continue;
 846                 }
 847                 newE164Members.add(member.getNumber().get());
 848             }
 849
 850             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 851             if (contacts.size() != newE164Members.size()) {
 852                 // Some of the new members are not registered on Signal
 853                 for (ContactTokenDetails contact : contacts) {
 854                     newE164Members.remove(contact.getNumber());
 855                 }
 856                 throw new IOException("Failed to add members "
 857                         + Util.join(", ", newE164Members)
 858                         + " to group: Not registered on Signal");
 859             }
 860
 861             g.addMembers(members);
 862         }
 863
 864         if (avatarFile != null) {
 865             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 866             File aFile = getGroupAvatarFile(g.groupId);
 867             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 868         }
 869     }
 870
 871     Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(
 872             byte[] groupId, SignalServiceAddress recipient
 873     ) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 874         GroupInfoV1 g;
 875         GroupInfo group = getGroupForSending(groupId);
 876         if (!(group instanceof GroupInfoV1)) {
 877             throw new RuntimeException("Received an invalid group request for a v2 group!");
 878         }
 879         g = (GroupInfoV1) group;
 880
 881         if (!g.isMember(recipient)) {
 882             throw new NotAGroupMemberException(groupId, g.name);
 883         }
 884
 885         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 886
 887         // Send group message only to the recipient who requested it
 888         return sendMessage(messageBuilder, Collections.singleton(recipient));
 889     }
 890
 891     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV1 g) throws AttachmentInvalidException {
 892         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 893                 .withId(g.groupId)
 894                 .withName(g.name)
 895                 .withMembers(new ArrayList<>(g.getMembers()));
 896
 897         File aFile = getGroupAvatarFile(g.groupId);
 898         if (aFile.exists()) {
 899             try {
 900                 group.withAvatar(Utils.createAttachment(aFile));
 901             } catch (IOException e) {
 902                 throw new AttachmentInvalidException(aFile.toString(), e);
 903             }
 904         }
 905
 906         return SignalServiceDataMessage.newBuilder()
 907                 .asGroupMessage(group.build())
 908                 .withExpiration(g.getMessageExpirationTime());
 909     }
 910
 911     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfoV2 g, byte[] signedGroupChange) {
 912         SignalServiceGroupV2.Builder group = SignalServiceGroupV2.newBuilder(g.getMasterKey())
 913                 .withRevision(g.getGroup().getRevision())
 914                 .withSignedGroupChange(signedGroupChange);
 915         return SignalServiceDataMessage.newBuilder()
 916                 .asGroupMessage(group.build())
 917                 .withExpiration(g.getMessageExpirationTime());
 918     }
 919
 920     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(
 921             byte[] groupId, SignalServiceAddress recipient
 922     ) throws IOException {
 923         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 924                 .withId(groupId);
 925
 926         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 927                 .asGroupMessage(group.build());
 928
 929         // Send group info request message to the recipient who sent us a message with this groupId
 930         return sendMessage(messageBuilder, Collections.singleton(recipient));
 931     }
 932
 933     void sendReceipt(
 934             SignalServiceAddress remoteAddress, long messageId
 935     ) throws IOException, UntrustedIdentityException {
 936         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 937                 Collections.singletonList(messageId),
 938                 System.currentTimeMillis());
 939
 940         createMessageSender().sendReceipt(remoteAddress,
 941                 unidentifiedAccessHelper.getAccessFor(remoteAddress),
 942                 receiptMessage);
 943     }
 944
 945     public Pair<Long, List<SendMessageResult>> sendMessage(
 946             String messageText, List<String> attachments, List<String> recipients
 947     ) throws IOException, AttachmentInvalidException, InvalidNumberException {
 948         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 949                 .withBody(messageText);
 950         if (attachments != null) {
 951             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 952
 953             // Upload attachments here, so we only upload once even for multiple recipients
 954             SignalServiceMessageSender messageSender = createMessageSender();
 955             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 956             for (SignalServiceAttachment attachment : attachmentStreams) {
 957                 if (attachment.isStream()) {
 958                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 959                 } else if (attachment.isPointer()) {
 960                     attachmentPointers.add(attachment.asPointer());
 961                 }
 962             }
 963
 964             messageBuilder.withAttachments(attachmentPointers);
 965         }
 966         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
 967     }
 968
 969     public Pair<Long, List<SendMessageResult>> sendMessageReaction(
 970             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, List<String> recipients
 971     ) throws IOException, InvalidNumberException {
 972         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji,
 973                 remove,
 974                 canonicalizeAndResolveSignalServiceAddress(targetAuthor),
 975                 targetSentTimestamp);
 976         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 977                 .withReaction(reaction);
 978         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
 979     }
 980
 981     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
 982         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().asEndSessionMessage();
 983
 984         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 985         try {
 986             return sendMessage(messageBuilder, signalServiceAddresses);
 987         } catch (Exception e) {
 988             for (SignalServiceAddress address : signalServiceAddresses) {
 989                 handleEndSession(address);
 990             }
 991             account.save();
 992             throw e;
 993         }
 994     }
 995
 996     public String getContactName(String number) throws InvalidNumberException {
 997         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 998         if (contact == null) {
 999             return "";
1000         } else {
1001             return contact.name;
1002         }
1003     }
1004
1005     public void setContactName(String number, String name) throws InvalidNumberException {
1006         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1007         ContactInfo contact = account.getContactStore().getContact(address);
1008         if (contact == null) {
1009             contact = new ContactInfo(address);
1010         }
1011         contact.name = name;
1012         account.getContactStore().updateContact(contact);
1013         account.save();
1014     }
1015
1016     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
1017         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
1018     }
1019
1020     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
1021         ContactInfo contact = account.getContactStore().getContact(address);
1022         if (contact == null) {
1023             contact = new ContactInfo(address);
1024         }
1025         contact.blocked = blocked;
1026         account.getContactStore().updateContact(contact);
1027         account.save();
1028     }
1029
1030     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
1031         GroupInfo group = getGroup(groupId);
1032         if (group == null) {
1033             throw new GroupNotFoundException(groupId);
1034         }
1035
1036         group.setBlocked(blocked);
1037         account.getGroupStore().updateGroup(group);
1038         account.save();
1039     }
1040
1041     public Pair<byte[], List<SendMessageResult>> updateGroup(
1042             byte[] groupId, String name, List<String> members, String avatar
1043     ) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
1044         return sendUpdateGroupMessage(groupId,
1045                 name,
1046                 members == null ? null : getSignalServiceAddresses(members),
1047                 avatar);
1048     }
1049
1050     /**
1051      * Change the expiration timer for a contact
1052      */
1053     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
1054         ContactInfo contact = account.getContactStore().getContact(address);
1055         contact.messageExpirationTime = messageExpirationTimer;
1056         account.getContactStore().updateContact(contact);
1057         sendExpirationTimerUpdate(address);
1058         account.save();
1059     }
1060
1061     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
1062         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
1063                 .asExpirationUpdate();
1064         sendMessage(messageBuilder, Collections.singleton(address));
1065     }
1066
1067     /**
1068      * Change the expiration timer for a contact
1069      */
1070     public void setExpirationTimer(
1071             String number, int messageExpirationTimer
1072     ) throws IOException, InvalidNumberException {
1073         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
1074         setExpirationTimer(address, messageExpirationTimer);
1075     }
1076
1077     /**
1078      * Change the expiration timer for a group
1079      */
1080     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
1081         GroupInfo g = account.getGroupStore().getGroup(groupId);
1082         if (g instanceof GroupInfoV1) {
1083             GroupInfoV1 groupInfoV1 = (GroupInfoV1) g;
1084             groupInfoV1.messageExpirationTime = messageExpirationTimer;
1085             account.getGroupStore().updateGroup(groupInfoV1);
1086         } else {
1087             throw new RuntimeException("TODO Not implemented!");
1088         }
1089     }
1090
1091     /**
1092      * Upload the sticker pack from path.
1093      *
1094      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
1095      * @return if successful, returns the URL to install the sticker pack in the signal app
1096      */
1097     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
1098         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
1099
1100         SignalServiceMessageSender messageSender = createMessageSender();
1101
1102         byte[] packKey = KeyUtils.createStickerUploadKey();
1103         String packId = messageSender.uploadStickerManifest(manifest, packKey);
1104
1105         Sticker sticker = new Sticker(Hex.fromStringCondensed(packId), packKey);
1106         account.getStickerStore().updateSticker(sticker);
1107         account.save();
1108
1109         try {
1110             return new URI("https",
1111                     "signal.art",
1112                     "/addstickers/",
1113                     "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(
1114                             Hex.toStringCondensed(packKey),
1115                             StandardCharsets.UTF_8)).toString();
1116         } catch (URISyntaxException e) {
1117             throw new AssertionError(e);
1118         }
1119     }
1120
1121     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(
1122             final String path
1123     ) throws IOException, StickerPackInvalidException {
1124         ZipFile zip = null;
1125         String rootPath = null;
1126
1127         final File file = new File(path);
1128         if (file.getName().endsWith(".zip")) {
1129             zip = new ZipFile(file);
1130         } else if (file.getName().equals("manifest.json")) {
1131             rootPath = file.getParent();
1132         } else {
1133             throw new StickerPackInvalidException("Could not find manifest.json");
1134         }
1135
1136         JsonStickerPack pack = parseStickerPack(rootPath, zip);
1137
1138         if (pack.stickers == null) {
1139             throw new StickerPackInvalidException("Must set a 'stickers' field.");
1140         }
1141
1142         if (pack.stickers.isEmpty()) {
1143             throw new StickerPackInvalidException("Must include stickers.");
1144         }
1145
1146         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
1147         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
1148             if (sticker.file == null) {
1149                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
1150             }
1151
1152             Pair<InputStream, Long> data;
1153             try {
1154                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
1155             } catch (IOException ignored) {
1156                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
1157             }
1158
1159             String contentType = Utils.getFileMimeType(new File(sticker.file), null);
1160             StickerInfo stickerInfo = new StickerInfo(data.first(),
1161                     data.second(),
1162                     Optional.fromNullable(sticker.emoji).or(""),
1163                     contentType);
1164             stickers.add(stickerInfo);
1165         }
1166
1167         StickerInfo cover = null;
1168         if (pack.cover != null) {
1169             if (pack.cover.file == null) {
1170                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
1171             }
1172
1173             Pair<InputStream, Long> data;
1174             try {
1175                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
1176             } catch (IOException ignored) {
1177                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
1178             }
1179
1180             String contentType = Utils.getFileMimeType(new File(pack.cover.file), null);
1181             cover = new StickerInfo(data.first(),
1182                     data.second(),
1183                     Optional.fromNullable(pack.cover.emoji).or(""),
1184                     contentType);
1185         }
1186
1187         return new SignalServiceStickerManifestUpload(pack.title, pack.author, cover, stickers);
1188     }
1189
1190     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
1191         InputStream inputStream;
1192         if (zip != null) {
1193             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
1194         } else {
1195             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
1196         }
1197         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
1198     }
1199
1200     private static Pair<InputStream, Long> getInputStreamAndLength(
1201             final String rootPath, final ZipFile zip, final String subfile
1202     ) throws IOException {
1203         if (zip != null) {
1204             final ZipEntry entry = zip.getEntry(subfile);
1205             return new Pair<>(zip.getInputStream(entry), entry.getSize());
1206         } else {
1207             final File file = new File(rootPath, subfile);
1208             return new Pair<>(new FileInputStream(file), file.length());
1209         }
1210     }
1211
1212     void requestSyncGroups() throws IOException {
1213         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1214                 .setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS)
1215                 .build();
1216         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1217         try {
1218             sendSyncMessage(message);
1219         } catch (UntrustedIdentityException e) {
1220             e.printStackTrace();
1221         }
1222     }
1223
1224     void requestSyncContacts() throws IOException {
1225         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1226                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS)
1227                 .build();
1228         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1229         try {
1230             sendSyncMessage(message);
1231         } catch (UntrustedIdentityException e) {
1232             e.printStackTrace();
1233         }
1234     }
1235
1236     void requestSyncBlocked() throws IOException {
1237         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1238                 .setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED)
1239                 .build();
1240         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1241         try {
1242             sendSyncMessage(message);
1243         } catch (UntrustedIdentityException e) {
1244             e.printStackTrace();
1245         }
1246     }
1247
1248     void requestSyncConfiguration() throws IOException {
1249         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder()
1250                 .setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION)
1251                 .build();
1252         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1253         try {
1254             sendSyncMessage(message);
1255         } catch (UntrustedIdentityException e) {
1256             e.printStackTrace();
1257         }
1258     }
1259
1260     private byte[] getSenderCertificate() {
1261         // TODO support UUID capable sender certificates
1262         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
1263         byte[] certificate;
1264         try {
1265             certificate = accountManager.getSenderCertificate();
1266         } catch (IOException e) {
1267             System.err.println("Failed to get sender certificate: " + e);
1268             return null;
1269         }
1270         // TODO cache for a day
1271         return certificate;
1272     }
1273
1274     private void sendSyncMessage(SignalServiceSyncMessage message) throws IOException, UntrustedIdentityException {
1275         SignalServiceMessageSender messageSender = createMessageSender();
1276         try {
1277             messageSender.sendMessage(message, unidentifiedAccessHelper.getAccessForSync());
1278         } catch (UntrustedIdentityException e) {
1279             account.getSignalProtocolStore()
1280                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1281                             e.getIdentityKey(),
1282                             TrustLevel.UNTRUSTED);
1283             throw e;
1284         }
1285     }
1286
1287     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1288         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1289         final Set<SignalServiceAddress> missingUuids = new HashSet<>();
1290
1291         for (String number : numbers) {
1292             final SignalServiceAddress resolvedAddress = canonicalizeAndResolveSignalServiceAddress(number);
1293             if (resolvedAddress.getUuid().isPresent()) {
1294                 signalServiceAddresses.add(resolvedAddress);
1295             } else {
1296                 missingUuids.add(resolvedAddress);
1297             }
1298         }
1299
1300         Map<String, UUID> registeredUsers;
1301         try {
1302             registeredUsers = accountManager.getRegisteredUsers(getIasKeyStore(),
1303                     missingUuids.stream().map(a -> a.getNumber().get()).collect(Collectors.toSet()),
1304                     CDS_MRENCLAVE);
1305         } catch (IOException | Quote.InvalidQuoteFormatException | UnauthenticatedQuoteException | SignatureException | UnauthenticatedResponseException e) {
1306             System.err.println("Failed to resolve uuids from server: " + e.getMessage());
1307             registeredUsers = new HashMap<>();
1308         }
1309
1310         for (SignalServiceAddress address : missingUuids) {
1311             final String number = address.getNumber().get();
1312             if (registeredUsers.containsKey(number)) {
1313                 final SignalServiceAddress newAddress = resolveSignalServiceAddress(new SignalServiceAddress(
1314                         registeredUsers.get(number),
1315                         number));
1316                 signalServiceAddresses.add(newAddress);
1317             } else {
1318                 signalServiceAddresses.add(address);
1319             }
1320         }
1321
1322         return signalServiceAddresses;
1323     }
1324
1325     private Pair<Long, List<SendMessageResult>> sendMessage(
1326             SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients
1327     ) throws IOException {
1328         recipients = recipients.stream().map(this::resolveSignalServiceAddress).collect(Collectors.toSet());
1329         final long timestamp = System.currentTimeMillis();
1330         messageBuilder.withTimestamp(timestamp);
1331         getOrCreateMessagePipe();
1332         getOrCreateUnidentifiedMessagePipe();
1333         SignalServiceDataMessage message = null;
1334         try {
1335             message = messageBuilder.build();
1336             if (message.getGroupContext().isPresent()) {
1337                 try {
1338                     SignalServiceMessageSender messageSender = createMessageSender();
1339                     final boolean isRecipientUpdate = false;
1340                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients),
1341                             unidentifiedAccessHelper.getAccessFor(recipients),
1342                             isRecipientUpdate,
1343                             message);
1344                     for (SendMessageResult r : result) {
1345                         if (r.getIdentityFailure() != null) {
1346                             account.getSignalProtocolStore()
1347                                     .saveIdentity(r.getAddress(),
1348                                             r.getIdentityFailure().getIdentityKey(),
1349                                             TrustLevel.UNTRUSTED);
1350                         }
1351                     }
1352                     return new Pair<>(timestamp, result);
1353                 } catch (UntrustedIdentityException e) {
1354                     account.getSignalProtocolStore()
1355                             .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1356                                     e.getIdentityKey(),
1357                                     TrustLevel.UNTRUSTED);
1358                     return new Pair<>(timestamp, Collections.emptyList());
1359                 }
1360             } else {
1361                 // Send to all individually, so sync messages are sent correctly
1362                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1363                 for (SignalServiceAddress address : recipients) {
1364                     ContactInfo contact = account.getContactStore().getContact(address);
1365                     if (contact != null) {
1366                         messageBuilder.withExpiration(contact.messageExpirationTime);
1367                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1368                     } else {
1369                         messageBuilder.withExpiration(0);
1370                         messageBuilder.withProfileKey(null);
1371                     }
1372                     message = messageBuilder.build();
1373                     if (address.matches(account.getSelfAddress())) {
1374                         results.add(sendSelfMessage(message));
1375                     } else {
1376                         results.add(sendMessage(address, message));
1377                     }
1378                 }
1379                 return new Pair<>(timestamp, results);
1380             }
1381         } finally {
1382             if (message != null && message.isEndSession()) {
1383                 for (SignalServiceAddress recipient : recipients) {
1384                     handleEndSession(recipient);
1385                 }
1386             }
1387             account.save();
1388         }
1389     }
1390
1391     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1392         SignalServiceMessageSender messageSender = createMessageSender();
1393
1394         SignalServiceAddress recipient = account.getSelfAddress();
1395
1396         final Optional<UnidentifiedAccessPair> unidentifiedAccess = unidentifiedAccessHelper.getAccessFor(recipient);
1397         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1398                 message.getTimestamp(),
1399                 message,
1400                 message.getExpiresInSeconds(),
1401                 Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1402                 false);
1403         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1404
1405         try {
1406             long startTime = System.currentTimeMillis();
1407             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1408             return SendMessageResult.success(recipient,
1409                     unidentifiedAccess.isPresent(),
1410                     false,
1411                     System.currentTimeMillis() - startTime);
1412         } catch (UntrustedIdentityException e) {
1413             account.getSignalProtocolStore()
1414                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1415                             e.getIdentityKey(),
1416                             TrustLevel.UNTRUSTED);
1417             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1418         }
1419     }
1420
1421     private SendMessageResult sendMessage(
1422             SignalServiceAddress address, SignalServiceDataMessage message
1423     ) throws IOException {
1424         SignalServiceMessageSender messageSender = createMessageSender();
1425
1426         try {
1427             return messageSender.sendMessage(address, unidentifiedAccessHelper.getAccessFor(address), message);
1428         } catch (UntrustedIdentityException e) {
1429             account.getSignalProtocolStore()
1430                     .saveIdentity(resolveSignalServiceAddress(e.getIdentifier()),
1431                             e.getIdentityKey(),
1432                             TrustLevel.UNTRUSTED);
1433             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1434         }
1435     }
1436
1437     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1438         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(),
1439                 account.getSignalProtocolStore(),
1440                 Utils.getCertificateValidator());
1441         try {
1442             return cipher.decrypt(envelope);
1443         } catch (ProtocolUntrustedIdentityException e) {
1444             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1445                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e
1446                         .getCause();
1447                 account.getSignalProtocolStore()
1448                         .saveIdentity(resolveSignalServiceAddress(identityException.getName()),
1449                                 identityException.getUntrustedIdentity(),
1450                                 TrustLevel.UNTRUSTED);
1451                 throw identityException;
1452             }
1453             throw new AssertionError(e);
1454         }
1455     }
1456
1457     private void handleEndSession(SignalServiceAddress source) {
1458         account.getSignalProtocolStore().deleteAllSessions(source);
1459     }
1460
1461     private static int currentTimeDays() {
1462         return (int) TimeUnit.MILLISECONDS.toDays(System.currentTimeMillis());
1463     }
1464
1465     private GroupsV2AuthorizationString getGroupAuthForToday(
1466             final GroupSecretParams groupSecretParams
1467     ) throws IOException {
1468         final int today = currentTimeDays();
1469         // Returns credentials for the next 7 days
1470         final HashMap<Integer, AuthCredentialResponse> credentials = groupsV2Api.getCredentials(today);
1471         // TODO cache credentials until they expire
1472         AuthCredentialResponse authCredentialResponse = credentials.get(today);
1473         try {
1474             return groupsV2Api.getGroupsV2AuthorizationString(account.getUuid(),
1475                     today,
1476                     groupSecretParams,
1477                     authCredentialResponse);
1478         } catch (VerificationFailedException e) {
1479             throw new IOException(e);
1480         }
1481     }
1482
1483     private List<HandleAction> handleSignalServiceDataMessage(
1484             SignalServiceDataMessage message,
1485             boolean isSync,
1486             SignalServiceAddress source,
1487             SignalServiceAddress destination,
1488             boolean ignoreAttachments
1489     ) {
1490         List<HandleAction> actions = new ArrayList<>();
1491         if (message.getGroupContext().isPresent()) {
1492             if (message.getGroupContext().get().getGroupV1().isPresent()) {
1493                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1494                 GroupInfo group = account.getGroupStore().getGroupByV1Id(groupInfo.getGroupId());
1495                 if (group == null || group instanceof GroupInfoV1) {
1496                     GroupInfoV1 groupV1 = (GroupInfoV1) group;
1497                     switch (groupInfo.getType()) {
1498                         case UPDATE: {
1499                             if (groupV1 == null) {
1500                                 groupV1 = new GroupInfoV1(groupInfo.getGroupId());
1501                             }
1502
1503                             if (groupInfo.getAvatar().isPresent()) {
1504                                 SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1505                                 if (avatar.isPointer()) {
1506                                     try {
1507                                         retrieveGroupAvatarAttachment(avatar.asPointer(), groupV1.groupId);
1508                                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1509                                         System.err.println("Failed to retrieve group avatar (" + avatar.asPointer()
1510                                                 .getRemoteId() + "): " + e.getMessage());
1511                                     }
1512                                 }
1513                             }
1514
1515                             if (groupInfo.getName().isPresent()) {
1516                                 groupV1.name = groupInfo.getName().get();
1517                             }
1518
1519                             if (groupInfo.getMembers().isPresent()) {
1520                                 groupV1.addMembers(groupInfo.getMembers()
1521                                         .get()
1522                                         .stream()
1523                                         .map(this::resolveSignalServiceAddress)
1524                                         .collect(Collectors.toSet()));
1525                             }
1526
1527                             account.getGroupStore().updateGroup(groupV1);
1528                             break;
1529                         }
1530                         case DELIVER:
1531                             if (groupV1 == null && !isSync) {
1532                                 actions.add(new SendGroupInfoRequestAction(source, groupInfo.getGroupId()));
1533                             }
1534                             break;
1535                         case QUIT: {
1536                             if (groupV1 != null) {
1537                                 groupV1.removeMember(source);
1538                                 account.getGroupStore().updateGroup(groupV1);
1539                             }
1540                             break;
1541                         }
1542                         case REQUEST_INFO:
1543                             if (groupV1 != null && !isSync) {
1544                                 actions.add(new SendGroupUpdateAction(source, groupV1.groupId));
1545                             }
1546                             break;
1547                     }
1548                 } else {
1549                     // Received a group v1 message for a v2 group
1550                 }
1551             }
1552             if (message.getGroupContext().get().getGroupV2().isPresent()) {
1553                 final SignalServiceGroupV2 groupContext = message.getGroupContext().get().getGroupV2().get();
1554                 final GroupMasterKey groupMasterKey = groupContext.getMasterKey();
1555
1556                 final GroupSecretParams groupSecretParams = GroupSecretParams.deriveFromMasterKey(groupMasterKey);
1557
1558                 byte[] groupId = groupSecretParams.getPublicParams().getGroupIdentifier().serialize();
1559                 GroupInfo groupInfo = account.getGroupStore().getGroupByV2Id(groupId);
1560                 if (groupInfo instanceof GroupInfoV1) {
1561                     // Received a v2 group message for a v2 group, we need to locally migrate the group
1562                     account.getGroupStore().deleteGroup(groupInfo.groupId);
1563                     GroupInfoV2 groupInfoV2 = new GroupInfoV2(groupId, groupMasterKey);
1564                     groupInfoV2.setGroup(getDecryptedGroup(groupSecretParams));
1565                     account.getGroupStore().updateGroup(groupInfoV2);
1566                     System.err.println("Locally migrated group "
1567                             + Base64.encodeBytes(groupInfo.groupId)
1568                             + " to group v2, id: "
1569                             + Base64.encodeBytes(groupInfoV2.groupId)
1570                             + " !!!");
1571                 } else if (groupInfo == null || groupInfo instanceof GroupInfoV2) {
1572                     GroupInfoV2 groupInfoV2 = groupInfo == null
1573                             ? new GroupInfoV2(groupId, groupMasterKey)
1574                             : (GroupInfoV2) groupInfo;
1575
1576                     if (groupInfoV2.getGroup() == null
1577                             || groupInfoV2.getGroup().getRevision() < groupContext.getRevision()) {
1578                         DecryptedGroup group = null;
1579                         if (groupContext.hasSignedGroupChange()
1580                                 && groupInfoV2.getGroup() != null
1581                                 && groupInfoV2.getGroup().getRevision() + 1 == groupContext.getRevision()) {
1582                             group = groupHelper.getUpdatedDecryptedGroup(groupInfoV2.getGroup(),
1583                                     groupContext.getSignedGroupChange(),
1584                                     groupMasterKey);
1585                         }
1586                         if (group == null) {
1587                             group = getDecryptedGroup(groupSecretParams);
1588                         }
1589                         groupInfoV2.setGroup(group);
1590                         account.getGroupStore().updateGroup(groupInfoV2);
1591                     }
1592                 }
1593             }
1594         }
1595         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1596         if (message.isEndSession()) {
1597             handleEndSession(conversationPartnerAddress);
1598         }
1599         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1600             if (message.getGroupContext().isPresent()) {
1601                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
1602                     SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1603                     GroupInfoV1 group = account.getGroupStore().getOrCreateGroupV1(groupInfo.getGroupId());
1604                     if (group != null) {
1605                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1606                             group.messageExpirationTime = message.getExpiresInSeconds();
1607                             account.getGroupStore().updateGroup(group);
1608                         }
1609                     }
1610                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
1611                     // disappearing message timer already stored in the DecryptedGroup
1612                 }
1613             } else {
1614                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1615                 if (contact == null) {
1616                     contact = new ContactInfo(conversationPartnerAddress);
1617                 }
1618                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1619                     contact.messageExpirationTime = message.getExpiresInSeconds();
1620                     account.getContactStore().updateContact(contact);
1621                 }
1622             }
1623         }
1624         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1625             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1626                 if (attachment.isPointer()) {
1627                     try {
1628                         retrieveAttachment(attachment.asPointer());
1629                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1630                         System.err.println("Failed to retrieve attachment ("
1631                                 + attachment.asPointer().getRemoteId()
1632                                 + "): "
1633                                 + e.getMessage());
1634                     }
1635                 }
1636             }
1637         }
1638         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1639             final ProfileKey profileKey;
1640             try {
1641                 profileKey = new ProfileKey(message.getProfileKey().get());
1642             } catch (InvalidInputException e) {
1643                 throw new AssertionError(e);
1644             }
1645             if (source.matches(account.getSelfAddress())) {
1646                 this.account.setProfileKey(profileKey);
1647             }
1648             this.account.getProfileStore().storeProfileKey(source, profileKey);
1649         }
1650         if (message.getPreviews().isPresent()) {
1651             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1652             for (SignalServiceDataMessage.Preview preview : previews) {
1653                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1654                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1655                     try {
1656                         retrieveAttachment(attachment);
1657                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1658                         System.err.println("Failed to retrieve attachment ("
1659                                 + attachment.getRemoteId()
1660                                 + "): "
1661                                 + e.getMessage());
1662                     }
1663                 }
1664             }
1665         }
1666         if (message.getSticker().isPresent()) {
1667             final SignalServiceDataMessage.Sticker messageSticker = message.getSticker().get();
1668             Sticker sticker = account.getStickerStore().getSticker(messageSticker.getPackId());
1669             if (sticker == null) {
1670                 sticker = new Sticker(messageSticker.getPackId(), messageSticker.getPackKey());
1671                 account.getStickerStore().updateSticker(sticker);
1672             }
1673         }
1674         return actions;
1675     }
1676
1677     private DecryptedGroup getDecryptedGroup(final GroupSecretParams groupSecretParams) {
1678         try {
1679             final GroupsV2AuthorizationString groupsV2AuthorizationString = getGroupAuthForToday(groupSecretParams);
1680             DecryptedGroup group = groupsV2Api.getGroup(groupSecretParams, groupsV2AuthorizationString);
1681             for (DecryptedMember member : group.getMembersList()) {
1682                 final SignalServiceAddress address = resolveSignalServiceAddress(new SignalServiceAddress(UuidUtil.parseOrThrow(
1683                         member.getUuid().toByteArray()), null));
1684                 try {
1685                     account.getProfileStore()
1686                             .storeProfileKey(address, new ProfileKey(member.getProfileKey().toByteArray()));
1687                 } catch (InvalidInputException ignored) {
1688                 }
1689             }
1690             return group;
1691         } catch (IOException | VerificationFailedException | InvalidGroupStateException e) {
1692             System.err.println("Failed to retrieve Group V2 info, ignoring ...");
1693             return null;
1694         }
1695     }
1696
1697     private void retryFailedReceivedMessages(
1698             ReceiveMessageHandler handler, boolean ignoreAttachments
1699     ) {
1700         final File cachePath = new File(getMessageCachePath());
1701         if (!cachePath.exists()) {
1702             return;
1703         }
1704         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1705             if (!dir.isDirectory()) {
1706                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1707                 continue;
1708             }
1709
1710             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1711                 if (!fileEntry.isFile()) {
1712                     continue;
1713                 }
1714                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1715             }
1716             // Try to delete directory if empty
1717             dir.delete();
1718         }
1719     }
1720
1721     private void retryFailedReceivedMessage(
1722             final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry
1723     ) {
1724         SignalServiceEnvelope envelope;
1725         try {
1726             envelope = Utils.loadEnvelope(fileEntry);
1727             if (envelope == null) {
1728                 return;
1729             }
1730         } catch (IOException e) {
1731             e.printStackTrace();
1732             return;
1733         }
1734         SignalServiceContent content = null;
1735         if (!envelope.isReceipt()) {
1736             try {
1737                 content = decryptMessage(envelope);
1738             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1739                 return;
1740             } catch (Exception er) {
1741                 // All other errors are not recoverable, so delete the cached message
1742                 try {
1743                     Files.delete(fileEntry.toPath());
1744                 } catch (IOException e) {
1745                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1746                 }
1747                 return;
1748             }
1749             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1750             for (HandleAction action : actions) {
1751                 try {
1752                     action.execute(this);
1753                 } catch (Throwable e) {
1754                     e.printStackTrace();
1755                 }
1756             }
1757         }
1758         account.save();
1759         handler.handleMessage(envelope, content, null);
1760         try {
1761             Files.delete(fileEntry.toPath());
1762         } catch (IOException e) {
1763             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1764         }
1765     }
1766
1767     public void receiveMessages(
1768             long timeout,
1769             TimeUnit unit,
1770             boolean returnOnTimeout,
1771             boolean ignoreAttachments,
1772             ReceiveMessageHandler handler
1773     ) throws IOException {
1774         retryFailedReceivedMessages(handler, ignoreAttachments);
1775
1776         Set<HandleAction> queuedActions = null;
1777
1778         getOrCreateMessagePipe();
1779
1780         boolean hasCaughtUpWithOldMessages = false;
1781
1782         while (true) {
1783             SignalServiceEnvelope envelope;
1784             SignalServiceContent content = null;
1785             Exception exception = null;
1786             final long now = new Date().getTime();
1787             try {
1788                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1789                     // store message on disk, before acknowledging receipt to the server
1790                     try {
1791                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1792                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1793                         Utils.storeEnvelope(envelope1, cacheFile);
1794                     } catch (IOException e) {
1795                         System.err.println("Failed to store encrypted message in disk cache, ignoring: "
1796                                 + e.getMessage());
1797                     }
1798                 });
1799                 if (result.isPresent()) {
1800                     envelope = result.get();
1801                 } else {
1802                     // Received indicator that server queue is empty
1803                     hasCaughtUpWithOldMessages = true;
1804
1805                     if (queuedActions != null) {
1806                         for (HandleAction action : queuedActions) {
1807                             try {
1808                                 action.execute(this);
1809                             } catch (Throwable e) {
1810                                 e.printStackTrace();
1811                             }
1812                         }
1813                         account.save();
1814                         queuedActions.clear();
1815                         queuedActions = null;
1816                     }
1817
1818                     // Continue to wait another timeout for new messages
1819                     continue;
1820                 }
1821             } catch (TimeoutException e) {
1822                 if (returnOnTimeout) return;
1823                 continue;
1824             } catch (InvalidVersionException e) {
1825                 System.err.println("Ignoring error: " + e.getMessage());
1826                 continue;
1827             }
1828
1829             if (envelope.hasSource()) {
1830                 // Store uuid if we don't have it already
1831                 SignalServiceAddress source = envelope.getSourceAddress();
1832                 resolveSignalServiceAddress(source);
1833             }
1834             if (!envelope.isReceipt()) {
1835                 try {
1836                     content = decryptMessage(envelope);
1837                 } catch (Exception e) {
1838                     exception = e;
1839                 }
1840                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1841                 if (hasCaughtUpWithOldMessages) {
1842                     for (HandleAction action : actions) {
1843                         try {
1844                             action.execute(this);
1845                         } catch (Throwable e) {
1846                             e.printStackTrace();
1847                         }
1848                     }
1849                 } else {
1850                     if (queuedActions == null) {
1851                         queuedActions = new HashSet<>();
1852                     }
1853                     queuedActions.addAll(actions);
1854                 }
1855             }
1856             account.save();
1857             if (!isMessageBlocked(envelope, content)) {
1858                 handler.handleMessage(envelope, content, exception);
1859             }
1860             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1861                 File cacheFile = null;
1862                 try {
1863                     String source = envelope.getSourceE164().isPresent() ? envelope.getSourceE164().get() : "";
1864                     cacheFile = getMessageCacheFile(source, now, envelope.getTimestamp());
1865                     Files.delete(cacheFile.toPath());
1866                     // Try to delete directory if empty
1867                     new File(getMessageCachePath()).delete();
1868                 } catch (IOException e) {
1869                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1870                 }
1871             }
1872         }
1873     }
1874
1875     private boolean isMessageBlocked(
1876             SignalServiceEnvelope envelope, SignalServiceContent content
1877     ) {
1878         SignalServiceAddress source;
1879         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1880             source = envelope.getSourceAddress();
1881         } else if (content != null) {
1882             source = content.getSender();
1883         } else {
1884             return false;
1885         }
1886         ContactInfo sourceContact = account.getContactStore().getContact(source);
1887         if (sourceContact != null && sourceContact.blocked) {
1888             return true;
1889         }
1890
1891         if (content != null && content.getDataMessage().isPresent()) {
1892             SignalServiceDataMessage message = content.getDataMessage().get();
1893             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1894                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1895                 GroupInfo group = getGroup(groupInfo.getGroupId());
1896                 return groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.isBlocked();
1897             }
1898         }
1899         return false;
1900     }
1901
1902     private List<HandleAction> handleMessage(
1903             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
1904     ) {
1905         List<HandleAction> actions = new ArrayList<>();
1906         if (content != null) {
1907             final SignalServiceAddress sender;
1908             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1909                 sender = envelope.getSourceAddress();
1910             } else {
1911                 sender = content.getSender();
1912             }
1913             // Store uuid if we don't have it already
1914             resolveSignalServiceAddress(sender);
1915
1916             if (content.getDataMessage().isPresent()) {
1917                 SignalServiceDataMessage message = content.getDataMessage().get();
1918
1919                 if (content.isNeedsReceipt()) {
1920                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1921                 }
1922
1923                 actions.addAll(handleSignalServiceDataMessage(message,
1924                         false,
1925                         sender,
1926                         account.getSelfAddress(),
1927                         ignoreAttachments));
1928             }
1929             if (content.getSyncMessage().isPresent()) {
1930                 account.setMultiDevice(true);
1931                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1932                 if (syncMessage.getSent().isPresent()) {
1933                     SentTranscriptMessage message = syncMessage.getSent().get();
1934                     final SignalServiceAddress destination = message.getDestination().orNull();
1935                     if (destination != null) {
1936                         actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
1937                                 true,
1938                                 sender,
1939                                 destination,
1940                                 ignoreAttachments));
1941                     }
1942                 }
1943                 if (syncMessage.getRequest().isPresent()) {
1944                     RequestMessage rm = syncMessage.getRequest().get();
1945                     if (rm.isContactsRequest()) {
1946                         actions.add(SendSyncContactsAction.create());
1947                     }
1948                     if (rm.isGroupsRequest()) {
1949                         actions.add(SendSyncGroupsAction.create());
1950                     }
1951                     if (rm.isBlockedListRequest()) {
1952                         actions.add(SendSyncBlockedListAction.create());
1953                     }
1954                     // TODO Handle rm.isConfigurationRequest(); rm.isKeysRequest();
1955                 }
1956                 if (syncMessage.getGroups().isPresent()) {
1957                     File tmpFile = null;
1958                     try {
1959                         tmpFile = IOUtils.createTempFile();
1960                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups()
1961                                 .get()
1962                                 .asPointer(), tmpFile)) {
1963                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1964                             DeviceGroup g;
1965                             while ((g = s.read()) != null) {
1966                                 GroupInfoV1 syncGroup = account.getGroupStore().getOrCreateGroupV1(g.getId());
1967                                 if (syncGroup != null) {
1968                                     if (g.getName().isPresent()) {
1969                                         syncGroup.name = g.getName().get();
1970                                     }
1971                                     syncGroup.addMembers(g.getMembers()
1972                                             .stream()
1973                                             .map(this::resolveSignalServiceAddress)
1974                                             .collect(Collectors.toSet()));
1975                                     if (!g.isActive()) {
1976                                         syncGroup.removeMember(account.getSelfAddress());
1977                                     } else {
1978                                         // Add ourself to the member set as it's marked as active
1979                                         syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1980                                     }
1981                                     syncGroup.blocked = g.isBlocked();
1982                                     if (g.getColor().isPresent()) {
1983                                         syncGroup.color = g.getColor().get();
1984                                     }
1985
1986                                     if (g.getAvatar().isPresent()) {
1987                                         retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1988                                     }
1989                                     syncGroup.inboxPosition = g.getInboxPosition().orNull();
1990                                     syncGroup.archived = g.isArchived();
1991                                     account.getGroupStore().updateGroup(syncGroup);
1992                                 }
1993                             }
1994                         }
1995                     } catch (Exception e) {
1996                         e.printStackTrace();
1997                     } finally {
1998                         if (tmpFile != null) {
1999                             try {
2000                                 Files.delete(tmpFile.toPath());
2001                             } catch (IOException e) {
2002                                 System.err.println("Failed to delete received groups temp file “"
2003                                         + tmpFile
2004                                         + "”: "
2005                                         + e.getMessage());
2006                             }
2007                         }
2008                     }
2009                 }
2010                 if (syncMessage.getBlockedList().isPresent()) {
2011                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
2012                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
2013                         setContactBlocked(resolveSignalServiceAddress(address), true);
2014                     }
2015                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
2016                         try {
2017                             setGroupBlocked(groupId, true);
2018                         } catch (GroupNotFoundException e) {
2019                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: "
2020                                     + Base64.encodeBytes(groupId));
2021                         }
2022                     }
2023                 }
2024                 if (syncMessage.getContacts().isPresent()) {
2025                     File tmpFile = null;
2026                     try {
2027                         tmpFile = IOUtils.createTempFile();
2028                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
2029                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream()
2030                                 .asPointer(), tmpFile)) {
2031                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
2032                             if (contactsMessage.isComplete()) {
2033                                 account.getContactStore().clear();
2034                             }
2035                             DeviceContact c;
2036                             while ((c = s.read()) != null) {
2037                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
2038                                     account.setProfileKey(c.getProfileKey().get());
2039                                 }
2040                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
2041                                 ContactInfo contact = account.getContactStore().getContact(address);
2042                                 if (contact == null) {
2043                                     contact = new ContactInfo(address);
2044                                 }
2045                                 if (c.getName().isPresent()) {
2046                                     contact.name = c.getName().get();
2047                                 }
2048                                 if (c.getColor().isPresent()) {
2049                                     contact.color = c.getColor().get();
2050                                 }
2051                                 if (c.getProfileKey().isPresent()) {
2052                                     account.getProfileStore().storeProfileKey(address, c.getProfileKey().get());
2053                                 }
2054                                 if (c.getVerified().isPresent()) {
2055                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
2056                                     account.getSignalProtocolStore()
2057                                             .setIdentityTrustLevel(verifiedMessage.getDestination(),
2058                                                     verifiedMessage.getIdentityKey(),
2059                                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2060                                 }
2061                                 if (c.getExpirationTimer().isPresent()) {
2062                                     contact.messageExpirationTime = c.getExpirationTimer().get();
2063                                 }
2064                                 contact.blocked = c.isBlocked();
2065                                 contact.inboxPosition = c.getInboxPosition().orNull();
2066                                 contact.archived = c.isArchived();
2067                                 account.getContactStore().updateContact(contact);
2068
2069                                 if (c.getAvatar().isPresent()) {
2070                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
2071                                 }
2072                             }
2073                         }
2074                     } catch (Exception e) {
2075                         e.printStackTrace();
2076                     } finally {
2077                         if (tmpFile != null) {
2078                             try {
2079                                 Files.delete(tmpFile.toPath());
2080                             } catch (IOException e) {
2081                                 System.err.println("Failed to delete received contacts temp file “"
2082                                         + tmpFile
2083                                         + "”: "
2084                                         + e.getMessage());
2085                             }
2086                         }
2087                     }
2088                 }
2089                 if (syncMessage.getVerified().isPresent()) {
2090                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
2091                     account.getSignalProtocolStore()
2092                             .setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()),
2093                                     verifiedMessage.getIdentityKey(),
2094                                     TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
2095                 }
2096                 if (syncMessage.getStickerPackOperations().isPresent()) {
2097                     final List<StickerPackOperationMessage> stickerPackOperationMessages = syncMessage.getStickerPackOperations()
2098                             .get();
2099                     for (StickerPackOperationMessage m : stickerPackOperationMessages) {
2100                         if (!m.getPackId().isPresent()) {
2101                             continue;
2102                         }
2103                         Sticker sticker = account.getStickerStore().getSticker(m.getPackId().get());
2104                         if (sticker == null) {
2105                             if (!m.getPackKey().isPresent()) {
2106                                 continue;
2107                             }
2108                             sticker = new Sticker(m.getPackId().get(), m.getPackKey().get());
2109                         }
2110                         sticker.setInstalled(!m.getType().isPresent()
2111                                 || m.getType().get() == StickerPackOperationMessage.Type.INSTALL);
2112                         account.getStickerStore().updateSticker(sticker);
2113                     }
2114                 }
2115                 if (syncMessage.getConfiguration().isPresent()) {
2116                     // TODO
2117                 }
2118             }
2119         }
2120         return actions;
2121     }
2122
2123     private File getContactAvatarFile(String number) {
2124         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
2125     }
2126
2127     private File retrieveContactAvatarAttachment(
2128             SignalServiceAttachment attachment, String number
2129     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2130         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2131         if (attachment.isPointer()) {
2132             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2133             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
2134         } else {
2135             SignalServiceAttachmentStream stream = attachment.asStream();
2136             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
2137         }
2138     }
2139
2140     private File getGroupAvatarFile(byte[] groupId) {
2141         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
2142     }
2143
2144     private File retrieveGroupAvatarAttachment(
2145             SignalServiceAttachment attachment, byte[] groupId
2146     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2147         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2148         if (attachment.isPointer()) {
2149             SignalServiceAttachmentPointer pointer = attachment.asPointer();
2150             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
2151         } else {
2152             SignalServiceAttachmentStream stream = attachment.asStream();
2153             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
2154         }
2155     }
2156
2157     private File getProfileAvatarFile(SignalServiceAddress address) {
2158         return new File(pathConfig.getAvatarsPath(), "profile-" + address.getLegacyIdentifier());
2159     }
2160
2161     private File retrieveProfileAvatar(
2162             SignalServiceAddress address, String avatarPath, ProfileKey profileKey
2163     ) throws IOException {
2164         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
2165         SignalServiceMessageReceiver receiver = getOrCreateMessageReceiver();
2166         File outputFile = getProfileAvatarFile(address);
2167
2168         File tmpFile = IOUtils.createTempFile();
2169         try (InputStream input = receiver.retrieveProfileAvatar(avatarPath,
2170                 tmpFile,
2171                 profileKey,
2172                 ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
2173             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
2174             IOUtils.copyStreamToFile(input, outputFile, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
2175         } finally {
2176             try {
2177                 Files.delete(tmpFile.toPath());
2178             } catch (IOException e) {
2179                 System.err.println("Failed to delete received avatar temp file “" + tmpFile + "”: " + e.getMessage());
2180             }
2181         }
2182         return outputFile;
2183     }
2184
2185     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
2186         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
2187     }
2188
2189     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
2190         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
2191         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
2192     }
2193
2194     private File retrieveAttachment(
2195             SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview
2196     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2197         if (storePreview && pointer.getPreview().isPresent()) {
2198             File previewFile = new File(outputFile + ".preview");
2199             try (OutputStream output = new FileOutputStream(previewFile)) {
2200                 byte[] preview = pointer.getPreview().get();
2201                 output.write(preview, 0, preview.length);
2202             } catch (FileNotFoundException e) {
2203                 e.printStackTrace();
2204                 return null;
2205             }
2206         }
2207
2208         final SignalServiceMessageReceiver messageReceiver = getOrCreateMessageReceiver();
2209
2210         File tmpFile = IOUtils.createTempFile();
2211         try (InputStream input = messageReceiver.retrieveAttachment(pointer,
2212                 tmpFile,
2213                 ServiceConfig.MAX_ATTACHMENT_SIZE)) {
2214             IOUtils.copyStreamToFile(input, outputFile);
2215         } finally {
2216             try {
2217                 Files.delete(tmpFile.toPath());
2218             } catch (IOException e) {
2219                 System.err.println("Failed to delete received attachment temp file “"
2220                         + tmpFile
2221                         + "”: "
2222                         + e.getMessage());
2223             }
2224         }
2225         return outputFile;
2226     }
2227
2228     private InputStream retrieveAttachmentAsStream(
2229             SignalServiceAttachmentPointer pointer, File tmpFile
2230     ) throws IOException, InvalidMessageException, MissingConfigurationException {
2231         final SignalServiceMessageReceiver messageReceiver = getOrCreateMessageReceiver();
2232         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
2233     }
2234
2235     void sendGroups() throws IOException, UntrustedIdentityException {
2236         File groupsFile = IOUtils.createTempFile();
2237
2238         try {
2239             try (OutputStream fos = new FileOutputStream(groupsFile)) {
2240                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
2241                 for (GroupInfo record : account.getGroupStore().getGroups()) {
2242                     if (record instanceof GroupInfoV1) {
2243                         GroupInfoV1 groupInfo = (GroupInfoV1) record;
2244                         out.write(new DeviceGroup(groupInfo.groupId,
2245                                 Optional.fromNullable(groupInfo.name),
2246                                 new ArrayList<>(groupInfo.getMembers()),
2247                                 createGroupAvatarAttachment(groupInfo.groupId),
2248                                 groupInfo.isMember(account.getSelfAddress()),
2249                                 Optional.of(groupInfo.messageExpirationTime),
2250                                 Optional.fromNullable(groupInfo.color),
2251                                 groupInfo.blocked,
2252                                 Optional.fromNullable(groupInfo.inboxPosition),
2253                                 groupInfo.archived));
2254                     }
2255                 }
2256             }
2257
2258             if (groupsFile.exists() && groupsFile.length() > 0) {
2259                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
2260                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2261                             .withStream(groupsFileStream)
2262                             .withContentType("application/octet-stream")
2263                             .withLength(groupsFile.length())
2264                             .build();
2265
2266                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
2267                 }
2268             }
2269         } finally {
2270             try {
2271                 Files.delete(groupsFile.toPath());
2272             } catch (IOException e) {
2273                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
2274             }
2275         }
2276     }
2277
2278     public void sendContacts() throws IOException, UntrustedIdentityException {
2279         File contactsFile = IOUtils.createTempFile();
2280
2281         try {
2282             try (OutputStream fos = new FileOutputStream(contactsFile)) {
2283                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
2284                 for (ContactInfo record : account.getContactStore().getContacts()) {
2285                     VerifiedMessage verifiedMessage = null;
2286                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore()
2287                             .getIdentity(record.getAddress());
2288                     if (currentIdentity != null) {
2289                         verifiedMessage = new VerifiedMessage(record.getAddress(),
2290                                 currentIdentity.getIdentityKey(),
2291                                 currentIdentity.getTrustLevel().toVerifiedState(),
2292                                 currentIdentity.getDateAdded().getTime());
2293                     }
2294
2295                     ProfileKey profileKey = account.getProfileStore().getProfileKey(record.getAddress());
2296                     out.write(new DeviceContact(record.getAddress(),
2297                             Optional.fromNullable(record.name),
2298                             createContactAvatarAttachment(record.number),
2299                             Optional.fromNullable(record.color),
2300                             Optional.fromNullable(verifiedMessage),
2301                             Optional.fromNullable(profileKey),
2302                             record.blocked,
2303                             Optional.of(record.messageExpirationTime),
2304                             Optional.fromNullable(record.inboxPosition),
2305                             record.archived));
2306                 }
2307
2308                 if (account.getProfileKey() != null) {
2309                     // Send our own profile key as well
2310                     out.write(new DeviceContact(account.getSelfAddress(),
2311                             Optional.absent(),
2312                             Optional.absent(),
2313                             Optional.absent(),
2314                             Optional.absent(),
2315                             Optional.of(account.getProfileKey()),
2316                             false,
2317                             Optional.absent(),
2318                             Optional.absent(),
2319                             false));
2320                 }
2321             }
2322
2323             if (contactsFile.exists() && contactsFile.length() > 0) {
2324                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
2325                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
2326                             .withStream(contactsFileStream)
2327                             .withContentType("application/octet-stream")
2328                             .withLength(contactsFile.length())
2329                             .build();
2330
2331                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
2332                 }
2333             }
2334         } finally {
2335             try {
2336                 Files.delete(contactsFile.toPath());
2337             } catch (IOException e) {
2338                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
2339             }
2340         }
2341     }
2342
2343     void sendBlockedList() throws IOException, UntrustedIdentityException {
2344         List<SignalServiceAddress> addresses = new ArrayList<>();
2345         for (ContactInfo record : account.getContactStore().getContacts()) {
2346             if (record.blocked) {
2347                 addresses.add(record.getAddress());
2348             }
2349         }
2350         List<byte[]> groupIds = new ArrayList<>();
2351         for (GroupInfo record : account.getGroupStore().getGroups()) {
2352             if (record.isBlocked()) {
2353                 groupIds.add(record.groupId);
2354             }
2355         }
2356         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
2357     }
2358
2359     private void sendVerifiedMessage(
2360             SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel
2361     ) throws IOException, UntrustedIdentityException {
2362         VerifiedMessage verifiedMessage = new VerifiedMessage(destination,
2363                 identityKey,
2364                 trustLevel.toVerifiedState(),
2365                 System.currentTimeMillis());
2366         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
2367     }
2368
2369     public List<ContactInfo> getContacts() {
2370         return account.getContactStore().getContacts();
2371     }
2372
2373     public ContactInfo getContact(String number) {
2374         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
2375     }
2376
2377     public GroupInfo getGroup(byte[] groupId) {
2378         return account.getGroupStore().getGroup(groupId);
2379     }
2380
2381     public List<JsonIdentityKeyStore.Identity> getIdentities() {
2382         return account.getSignalProtocolStore().getIdentities();
2383     }
2384
2385     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
2386         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
2387     }
2388
2389     /**
2390      * Trust this the identity with this fingerprint
2391      *
2392      * @param name        username of the identity
2393      * @param fingerprint Fingerprint
2394      */
2395     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
2396         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2397         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2398         if (ids == null) {
2399             return false;
2400         }
2401         for (JsonIdentityKeyStore.Identity id : ids) {
2402             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
2403                 continue;
2404             }
2405
2406             account.getSignalProtocolStore()
2407                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2408             try {
2409                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2410             } catch (IOException | UntrustedIdentityException e) {
2411                 e.printStackTrace();
2412             }
2413             account.save();
2414             return true;
2415         }
2416         return false;
2417     }
2418
2419     /**
2420      * Trust this the identity with this safety number
2421      *
2422      * @param name         username of the identity
2423      * @param safetyNumber Safety number
2424      */
2425     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2426         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2427         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2428         if (ids == null) {
2429             return false;
2430         }
2431         for (JsonIdentityKeyStore.Identity id : ids) {
2432             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2433                 continue;
2434             }
2435
2436             account.getSignalProtocolStore()
2437                     .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2438             try {
2439                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2440             } catch (IOException | UntrustedIdentityException e) {
2441                 e.printStackTrace();
2442             }
2443             account.save();
2444             return true;
2445         }
2446         return false;
2447     }
2448
2449     /**
2450      * Trust all keys of this identity without verification
2451      *
2452      * @param name username of the identity
2453      */
2454     public boolean trustIdentityAllKeys(String name) {
2455         SignalServiceAddress address = resolveSignalServiceAddress(name);
2456         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2457         if (ids == null) {
2458             return false;
2459         }
2460         for (JsonIdentityKeyStore.Identity id : ids) {
2461             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2462                 account.getSignalProtocolStore()
2463                         .setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2464                 try {
2465                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2466                 } catch (IOException | UntrustedIdentityException e) {
2467                     e.printStackTrace();
2468                 }
2469             }
2470         }
2471         account.save();
2472         return true;
2473     }
2474
2475     public String computeSafetyNumber(
2476             SignalServiceAddress theirAddress, IdentityKey theirIdentityKey
2477     ) {
2478         return Utils.computeSafetyNumber(account.getSelfAddress(),
2479                 getIdentityKeyPair().getPublicKey(),
2480                 theirAddress,
2481                 theirIdentityKey);
2482     }
2483
2484     void saveAccount() {
2485         account.save();
2486     }
2487
2488     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2489         String canonicalizedNumber = UuidUtil.isUuid(identifier)
2490                 ? identifier
2491                 : Util.canonicalizeNumber(identifier, account.getUsername());
2492         return resolveSignalServiceAddress(canonicalizedNumber);
2493     }
2494
2495     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2496         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2497
2498         return resolveSignalServiceAddress(address);
2499     }
2500
2501     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2502         if (address.matches(account.getSelfAddress())) {
2503             return account.getSelfAddress();
2504         }
2505
2506         return account.getRecipientStore().resolveServiceAddress(address);
2507     }
2508
2509     @Override
2510     public void close() throws IOException {
2511         if (messagePipe != null) {
2512             messagePipe.shutdown();
2513             messagePipe = null;
2514         }
2515
2516         if (unidentifiedMessagePipe != null) {
2517             unidentifiedMessagePipe.shutdown();
2518             unidentifiedMessagePipe = null;
2519         }
2520
2521         account.close();
2522     }
2523
2524     public interface ReceiveMessageHandler {
2525
2526         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2527     }
2528 }