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;
  22 import org.asamk.signal.storage.SignalAccount;
  23 import org.asamk.signal.storage.contacts.ContactInfo;
  24 import org.asamk.signal.storage.groups.GroupInfo;
  25 import org.asamk.signal.storage.groups.JsonGroupStore;
  26 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  27 import org.asamk.signal.util.IOUtils;
  28 import org.asamk.signal.util.Util;
  29 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  30 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  31 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  32 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  33 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  34 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  35 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  36 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  37 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  38 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  39 import org.signal.libsignal.metadata.SelfSendException;
  40 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  41 import org.signal.zkgroup.InvalidInputException;
  42 import org.signal.zkgroup.VerificationFailedException;
  43 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  44 import org.signal.zkgroup.profiles.ProfileKey;
  45 import org.whispersystems.libsignal.IdentityKey;
  46 import org.whispersystems.libsignal.IdentityKeyPair;
  47 import org.whispersystems.libsignal.InvalidKeyException;
  48 import org.whispersystems.libsignal.InvalidMessageException;
  49 import org.whispersystems.libsignal.InvalidVersionException;
  50 import org.whispersystems.libsignal.ecc.Curve;
  51 import org.whispersystems.libsignal.ecc.ECKeyPair;
  52 import org.whispersystems.libsignal.ecc.ECPublicKey;
  53 import org.whispersystems.libsignal.state.PreKeyRecord;
  54 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  55 import org.whispersystems.libsignal.util.KeyHelper;
  56 import org.whispersystems.libsignal.util.Medium;
  57 import org.whispersystems.libsignal.util.Pair;
  58 import org.whispersystems.libsignal.util.guava.Optional;
  59 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  60 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  61 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  62 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  63 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  64 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  65 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  66 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  67 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  68 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  69 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  70 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  71 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  72 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  73 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  74 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  79 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  80 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  81 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  82 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  83 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  84 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  85 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  86 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  87 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  88 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  89 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  90 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  91 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  92 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  93 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  94 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
  95 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  96 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  97 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  98 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
  99 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
 100 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 101 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 102 import org.whispersystems.signalservice.api.util.SleepTimer;
 103 import org.whispersystems.signalservice.api.util.StreamDetails;
 104 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 105 import org.whispersystems.signalservice.api.util.UuidUtil;
 106 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 107 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 108 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 109 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 110 import org.whispersystems.signalservice.internal.util.Hex;
 111 import org.whispersystems.util.Base64;
 112
 113 import java.io.Closeable;
 114 import java.io.File;
 115 import java.io.FileInputStream;
 116 import java.io.FileNotFoundException;
 117 import java.io.FileOutputStream;
 118 import java.io.IOException;
 119 import java.io.InputStream;
 120 import java.io.OutputStream;
 121 import java.net.URI;
 122 import java.net.URISyntaxException;
 123 import java.net.URLEncoder;
 124 import java.nio.file.Files;
 125 import java.nio.file.Paths;
 126 import java.nio.file.StandardCopyOption;
 127 import java.util.ArrayList;
 128 import java.util.Arrays;
 129 import java.util.Collection;
 130 import java.util.Collections;
 131 import java.util.Date;
 132 import java.util.HashSet;
 133 import java.util.LinkedList;
 134 import java.util.List;
 135 import java.util.Locale;
 136 import java.util.Objects;
 137 import java.util.Set;
 138 import java.util.UUID;
 139 import java.util.concurrent.TimeUnit;
 140 import java.util.concurrent.TimeoutException;
 141 import java.util.stream.Collectors;
 142 import java.util.zip.ZipEntry;
 143 import java.util.zip.ZipFile;
 144
 145 public class Manager implements Signal, Closeable {
 146
 147     private final SleepTimer timer = new UptimeSleepTimer();
 148     private final SignalServiceConfiguration serviceConfiguration;
 149     private final String userAgent;
 150
 151     private final SignalAccount account;
 152     private final PathConfig pathConfig;
 153     private SignalServiceAccountManager accountManager;
 154     private SignalServiceMessagePipe messagePipe = null;
 155     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 156
 157     public Manager(SignalAccount account, PathConfig pathConfig, SignalServiceConfiguration serviceConfiguration, String userAgent) {
 158         this.account = account;
 159         this.pathConfig = pathConfig;
 160         this.serviceConfiguration = serviceConfiguration;
 161         this.userAgent = userAgent;
 162         this.accountManager = createSignalServiceAccountManager();
 163
 164         this.account.setResolver(this::resolveSignalServiceAddress);
 165     }
 166
 167     public String getUsername() {
 168         return account.getUsername();
 169     }
 170
 171     public SignalServiceAddress getSelfAddress() {
 172         return account.getSelfAddress();
 173     }
 174
 175     private SignalServiceAccountManager createSignalServiceAccountManager() {
 176         return new SignalServiceAccountManager(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), userAgent, timer);
 177     }
 178
 179     private IdentityKeyPair getIdentityKeyPair() {
 180         return account.getSignalProtocolStore().getIdentityKeyPair();
 181     }
 182
 183     public int getDeviceId() {
 184         return account.getDeviceId();
 185     }
 186
 187     private String getMessageCachePath() {
 188         return pathConfig.getDataPath() + "/" + account.getUsername() + ".d/msg-cache";
 189     }
 190
 191     private String getMessageCachePath(String sender) {
 192         if (sender == null || sender.isEmpty()) {
 193             return getMessageCachePath();
 194         }
 195
 196         return getMessageCachePath() + "/" + sender.replace("/", "_");
 197     }
 198
 199     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 200         String cachePath = getMessageCachePath(sender);
 201         IOUtils.createPrivateDirectories(cachePath);
 202         return new File(cachePath + "/" + now + "_" + timestamp);
 203     }
 204
 205     public static Manager init(String username, String settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent) throws IOException {
 206         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 207
 208         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 209             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 210             int registrationId = KeyHelper.generateRegistrationId(false);
 211
 212             ProfileKey profileKey = KeyUtils.createProfileKey();
 213             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(), username, identityKey, registrationId, profileKey);
 214             account.save();
 215
 216             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 217         }
 218
 219         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 220
 221         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 222
 223         m.migrateLegacyConfigs();
 224
 225         return m;
 226     }
 227
 228     private void migrateLegacyConfigs() {
 229         // Copy group avatars that were previously stored in the attachments folder
 230         // to the new avatar folder
 231         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 232             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 233                 File avatarFile = getGroupAvatarFile(g.groupId);
 234                 File attachmentFile = getAttachmentFile(new SignalServiceAttachmentRemoteId(g.getAvatarId()));
 235                 if (!avatarFile.exists() && attachmentFile.exists()) {
 236                     try {
 237                         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 238                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 239                     } catch (Exception e) {
 240                         // Ignore
 241                     }
 242                 }
 243             }
 244             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 245             account.save();
 246         }
 247         if (account.getProfileKey() == null) {
 248             // Old config file, creating new profile key
 249             account.setProfileKey(KeyUtils.createProfileKey());
 250             account.save();
 251         }
 252     }
 253
 254     public void checkAccountState() throws IOException {
 255         if (account.isRegistered()) {
 256             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 257                 refreshPreKeys();
 258                 account.save();
 259             }
 260             if (account.getUuid() == null) {
 261                 account.setUuid(accountManager.getOwnUuid());
 262                 account.save();
 263             }
 264         }
 265     }
 266
 267     public boolean isRegistered() {
 268         return account.isRegistered();
 269     }
 270
 271     public void register(boolean voiceVerification) throws IOException {
 272         account.setPassword(KeyUtils.createPassword());
 273
 274         // Resetting UUID, because registering doesn't work otherwise
 275         account.setUuid(null);
 276         accountManager = createSignalServiceAccountManager();
 277
 278         if (voiceVerification) {
 279             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 280         } else {
 281             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 282         }
 283
 284         account.setRegistered(false);
 285         account.save();
 286     }
 287
 288     public void updateAccountAttributes() throws IOException {
 289         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities);
 290     }
 291
 292     public void setProfileName(String name) throws IOException {
 293         accountManager.setProfileName(account.getProfileKey(), name);
 294     }
 295
 296     public void setProfileAvatar(File avatar) throws IOException {
 297         final StreamDetails streamDetails = Utils.createStreamDetailsFromFile(avatar);
 298         accountManager.setProfileAvatar(account.getProfileKey(), streamDetails);
 299         streamDetails.getStream().close();
 300     }
 301
 302     public void removeProfileAvatar() throws IOException {
 303         accountManager.setProfileAvatar(account.getProfileKey(), null);
 304     }
 305
 306     public void unregister() throws IOException {
 307         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 308         // If this is the master device, other users can't send messages to this number anymore.
 309         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 310         accountManager.setGcmId(Optional.absent());
 311
 312         account.setRegistered(false);
 313         account.save();
 314     }
 315
 316     public List<DeviceInfo> getLinkedDevices() throws IOException {
 317         List<DeviceInfo> devices = accountManager.getDevices();
 318         account.setMultiDevice(devices.size() > 1);
 319         account.save();
 320         return devices;
 321     }
 322
 323     public void removeLinkedDevices(int deviceId) throws IOException {
 324         accountManager.removeDevice(deviceId);
 325         List<DeviceInfo> devices = accountManager.getDevices();
 326         account.setMultiDevice(devices.size() > 1);
 327         account.save();
 328     }
 329
 330     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 331         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 332
 333         addDevice(info.deviceIdentifier, info.deviceKey);
 334     }
 335
 336     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 337         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 338         String verificationCode = accountManager.getNewDeviceVerificationCode();
 339
 340         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 341         account.setMultiDevice(true);
 342         account.save();
 343     }
 344
 345     private List<PreKeyRecord> generatePreKeys() {
 346         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 347
 348         final int offset = account.getPreKeyIdOffset();
 349         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 350             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 351             ECKeyPair keyPair = Curve.generateKeyPair();
 352             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 353
 354             records.add(record);
 355         }
 356
 357         account.addPreKeys(records);
 358         account.save();
 359
 360         return records;
 361     }
 362
 363     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 364         try {
 365             ECKeyPair keyPair = Curve.generateKeyPair();
 366             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 367             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 368
 369             account.addSignedPreKey(record);
 370             account.save();
 371
 372             return record;
 373         } catch (InvalidKeyException e) {
 374             throw new AssertionError(e);
 375         }
 376     }
 377
 378     public void verifyAccount(String verificationCode, String pin) throws IOException {
 379         verificationCode = verificationCode.replace("-", "");
 380         account.setSignalingKey(KeyUtils.createSignalingKey());
 381         // TODO make unrestricted unidentified access configurable
 382         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities);
 383
 384         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 385         // TODO response.isStorageCapable()
 386         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 387         account.setRegistered(true);
 388         account.setUuid(uuid);
 389         account.setRegistrationLockPin(pin);
 390         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 391
 392         refreshPreKeys();
 393         account.save();
 394     }
 395
 396     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 397         if (pin.isPresent()) {
 398             account.setRegistrationLockPin(pin.get());
 399             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 400         } else {
 401             account.setRegistrationLockPin(null);
 402             accountManager.removeRegistrationLockV1();
 403         }
 404         account.save();
 405     }
 406
 407     void refreshPreKeys() throws IOException {
 408         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 409         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 410         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 411
 412         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 413     }
 414
 415     private SignalServiceMessageReceiver getMessageReceiver() {
 416         // TODO implement ZkGroup support
 417         final ClientZkProfileOperations clientZkProfileOperations = null;
 418         return new SignalServiceMessageReceiver(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), userAgent, null, timer, clientZkProfileOperations);
 419     }
 420
 421     private SignalServiceMessageSender getMessageSender() {
 422         // TODO implement ZkGroup support
 423         final ClientZkProfileOperations clientZkProfileOperations = null;
 424         final boolean attachmentsV3 = false;
 425         return new SignalServiceMessageSender(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 426                 account.getDeviceId(), account.getSignalProtocolStore(), userAgent, account.isMultiDevice(), attachmentsV3, Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent(), clientZkProfileOperations);
 427     }
 428
 429     private SignalServiceProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 430         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 431                 : messagePipe;
 432
 433         if (pipe != null) {
 434             try {
 435                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 436             } catch (IOException ignored) {
 437             }
 438         }
 439
 440         SignalServiceMessageReceiver receiver = getMessageReceiver();
 441         try {
 442             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 443         } catch (VerificationFailedException e) {
 444             throw new AssertionError(e);
 445         }
 446     }
 447
 448     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 449         File file = getGroupAvatarFile(groupId);
 450         if (!file.exists()) {
 451             return Optional.absent();
 452         }
 453
 454         return Optional.of(Utils.createAttachment(file));
 455     }
 456
 457     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 458         File file = getContactAvatarFile(number);
 459         if (!file.exists()) {
 460             return Optional.absent();
 461         }
 462
 463         return Optional.of(Utils.createAttachment(file));
 464     }
 465
 466     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 467         GroupInfo g = account.getGroupStore().getGroup(groupId);
 468         if (g == null) {
 469             throw new GroupNotFoundException(groupId);
 470         }
 471         if (!g.isMember(account.getSelfAddress())) {
 472             throw new NotAGroupMemberException(groupId, g.name);
 473         }
 474         return g;
 475     }
 476
 477     public List<GroupInfo> getGroups() {
 478         return account.getGroupStore().getGroups();
 479     }
 480
 481     @Override
 482     public long sendGroupMessage(String messageText, List<String> attachments,
 483                                  byte[] groupId)
 484             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 485         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 486         if (attachments != null) {
 487             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 488         }
 489         if (groupId != null) {
 490             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 491                     .withId(groupId)
 492                     .build();
 493             messageBuilder.asGroupMessage(group);
 494         }
 495
 496         final GroupInfo g = getGroupForSending(groupId);
 497
 498         messageBuilder.withExpiration(g.messageExpirationTime);
 499
 500         return sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 501     }
 502
 503     public void sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 504                                          long targetSentTimestamp, byte[] groupId)
 505             throws IOException, EncapsulatedExceptions, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 506         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 507         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 508                 .withReaction(reaction);
 509         if (groupId != null) {
 510             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 511                     .withId(groupId)
 512                     .build();
 513             messageBuilder.asGroupMessage(group);
 514         }
 515         final GroupInfo g = getGroupForSending(groupId);
 516         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 517     }
 518
 519     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions, NotAGroupMemberException {
 520         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 521                 .withId(groupId)
 522                 .build();
 523
 524         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 525                 .asGroupMessage(group);
 526
 527         final GroupInfo g = getGroupForSending(groupId);
 528         g.removeMember(account.getSelfAddress());
 529         account.getGroupStore().updateGroup(g);
 530
 531         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 532     }
 533
 534     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 535         GroupInfo g;
 536         if (groupId == null) {
 537             // Create new group
 538             g = new GroupInfo(KeyUtils.createGroupId());
 539             g.addMembers(Collections.singleton(account.getSelfAddress()));
 540         } else {
 541             g = getGroupForSending(groupId);
 542         }
 543
 544         if (name != null) {
 545             g.name = name;
 546         }
 547
 548         if (members != null) {
 549             final Set<String> newE164Members = new HashSet<>();
 550             for (SignalServiceAddress member : members) {
 551                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 552                     continue;
 553                 }
 554                 newE164Members.add(member.getNumber().get());
 555             }
 556
 557             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 558             if (contacts.size() != newE164Members.size()) {
 559                 // Some of the new members are not registered on Signal
 560                 for (ContactTokenDetails contact : contacts) {
 561                     newE164Members.remove(contact.getNumber());
 562                 }
 563                 System.err.println("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 564                 System.err.println("Aborting…");
 565                 System.exit(1);
 566             }
 567
 568             g.addMembers(members);
 569         }
 570
 571         if (avatarFile != null) {
 572             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 573             File aFile = getGroupAvatarFile(g.groupId);
 574             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 575         }
 576
 577         account.getGroupStore().updateGroup(g);
 578
 579         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 580
 581         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 582         return g.groupId;
 583     }
 584
 585     private void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 586         if (groupId == null) {
 587             return;
 588         }
 589         GroupInfo g = getGroupForSending(groupId);
 590
 591         if (!g.isMember(recipient)) {
 592             return;
 593         }
 594
 595         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 596
 597         // Send group message only to the recipient who requested it
 598         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 599     }
 600
 601     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) throws AttachmentInvalidException {
 602         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 603                 .withId(g.groupId)
 604                 .withName(g.name)
 605                 .withMembers(new ArrayList<>(g.getMembers()));
 606
 607         File aFile = getGroupAvatarFile(g.groupId);
 608         if (aFile.exists()) {
 609             try {
 610                 group.withAvatar(Utils.createAttachment(aFile));
 611             } catch (IOException e) {
 612                 throw new AttachmentInvalidException(aFile.toString(), e);
 613             }
 614         }
 615
 616         return SignalServiceDataMessage.newBuilder()
 617                 .asGroupMessage(group.build())
 618                 .withExpiration(g.messageExpirationTime);
 619     }
 620
 621     private void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 622         if (groupId == null) {
 623             return;
 624         }
 625
 626         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 627                 .withId(groupId);
 628
 629         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 630                 .asGroupMessage(group.build());
 631
 632         // Send group info request message to the recipient who sent us a message with this groupId
 633         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 634     }
 635
 636     private void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 637         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 638                 Collections.singletonList(messageId),
 639                 System.currentTimeMillis());
 640
 641         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 642     }
 643
 644     @Override
 645     public long sendMessage(String message, List<String> attachments, String recipient)
 646             throws EncapsulatedExceptions, AttachmentInvalidException, IOException, InvalidNumberException {
 647         List<String> recipients = new ArrayList<>(1);
 648         recipients.add(recipient);
 649         return sendMessage(message, attachments, recipients);
 650     }
 651
 652     @Override
 653     public long sendMessage(String messageText, List<String> attachments,
 654                             List<String> recipients)
 655             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 656         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 657         if (attachments != null) {
 658             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 659
 660             // Upload attachments here, so we only upload once even for multiple recipients
 661             SignalServiceMessageSender messageSender = getMessageSender();
 662             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 663             for (SignalServiceAttachment attachment : attachmentStreams) {
 664                 if (attachment.isStream()) {
 665                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 666                 } else if (attachment.isPointer()) {
 667                     attachmentPointers.add(attachment.asPointer());
 668                 }
 669             }
 670
 671             messageBuilder.withAttachments(attachmentPointers);
 672         }
 673         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 674     }
 675
 676     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 677                                     long targetSentTimestamp, List<String> recipients)
 678             throws IOException, EncapsulatedExceptions, InvalidNumberException {
 679         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 680         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 681                 .withReaction(reaction);
 682         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 683     }
 684
 685     @Override
 686     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 687         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 688                 .asEndSessionMessage();
 689
 690         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 691         try {
 692             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 693         } catch (Exception e) {
 694             for (SignalServiceAddress address : signalServiceAddresses) {
 695                 handleEndSession(address);
 696             }
 697             account.save();
 698             throw e;
 699         }
 700     }
 701
 702     @Override
 703     public String getContactName(String number) throws InvalidNumberException {
 704         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 705         if (contact == null) {
 706             return "";
 707         } else {
 708             return contact.name;
 709         }
 710     }
 711
 712     @Override
 713     public void setContactName(String number, String name) throws InvalidNumberException {
 714         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 715         ContactInfo contact = account.getContactStore().getContact(address);
 716         if (contact == null) {
 717             contact = new ContactInfo(address);
 718             System.err.println("Add contact " + contact.number + " named " + name);
 719         } else {
 720             System.err.println("Updating contact " + contact.number + " name " + contact.name + " -> " + name);
 721         }
 722         contact.name = name;
 723         account.getContactStore().updateContact(contact);
 724         account.save();
 725     }
 726
 727     @Override
 728     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 729         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 730     }
 731
 732     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 733         ContactInfo contact = account.getContactStore().getContact(address);
 734         if (contact == null) {
 735             contact = new ContactInfo(address);
 736             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + address.getNumber().orNull());
 737         } else {
 738             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + address.getNumber().orNull());
 739         }
 740         contact.blocked = blocked;
 741         account.getContactStore().updateContact(contact);
 742         account.save();
 743     }
 744
 745     @Override
 746     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 747         GroupInfo group = getGroup(groupId);
 748         if (group == null) {
 749             throw new GroupNotFoundException(groupId);
 750         } else {
 751             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 752             group.blocked = blocked;
 753             account.getGroupStore().updateGroup(group);
 754             account.save();
 755         }
 756     }
 757
 758     @Override
 759     public List<byte[]> getGroupIds() {
 760         List<GroupInfo> groups = getGroups();
 761         List<byte[]> ids = new ArrayList<>(groups.size());
 762         for (GroupInfo group : groups) {
 763             ids.add(group.groupId);
 764         }
 765         return ids;
 766     }
 767
 768     @Override
 769     public String getGroupName(byte[] groupId) {
 770         GroupInfo group = getGroup(groupId);
 771         if (group == null) {
 772             return "";
 773         } else {
 774             return group.name;
 775         }
 776     }
 777
 778     @Override
 779     public List<String> getGroupMembers(byte[] groupId) {
 780         GroupInfo group = getGroup(groupId);
 781         if (group == null) {
 782             return Collections.emptyList();
 783         } else {
 784             return new ArrayList<>(group.getMembersE164());
 785         }
 786     }
 787
 788     @Override
 789     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 790         if (groupId.length == 0) {
 791             groupId = null;
 792         }
 793         if (name.isEmpty()) {
 794             name = null;
 795         }
 796         if (members.size() == 0) {
 797             members = null;
 798         }
 799         if (avatar.isEmpty()) {
 800             avatar = null;
 801         }
 802         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 803     }
 804
 805     /**
 806      * Change the expiration timer for a contact
 807      */
 808     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) {
 809         ContactInfo c = account.getContactStore().getContact(address);
 810         c.messageExpirationTime = messageExpirationTimer;
 811         account.getContactStore().updateContact(c);
 812     }
 813
 814     /**
 815      * Change the expiration timer for a group
 816      */
 817     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 818         GroupInfo g = account.getGroupStore().getGroup(groupId);
 819         g.messageExpirationTime = messageExpirationTimer;
 820         account.getGroupStore().updateGroup(g);
 821     }
 822
 823     /**
 824      * Upload the sticker pack from path.
 825      *
 826      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 827      * @return if successful, returns the URL to install the sticker pack in the signal app
 828      */
 829     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 830         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 831
 832         SignalServiceMessageSender messageSender = getMessageSender();
 833
 834         byte[] packKey = KeyUtils.createStickerUploadKey();
 835         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 836
 837         try {
 838             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 839                     .toString();
 840         } catch (URISyntaxException e) {
 841             throw new AssertionError(e);
 842         }
 843     }
 844
 845     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 846         ZipFile zip = null;
 847         String rootPath = null;
 848
 849         final File file = new File(path);
 850         if (file.getName().endsWith(".zip")) {
 851             zip = new ZipFile(file);
 852         } else if (file.getName().equals("manifest.json")) {
 853             rootPath = file.getParent();
 854         } else {
 855             throw new StickerPackInvalidException("Could not find manifest.json");
 856         }
 857
 858         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 859
 860         if (pack.stickers == null) {
 861             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 862         }
 863
 864         if (pack.stickers.isEmpty()) {
 865             throw new StickerPackInvalidException("Must include stickers.");
 866         }
 867
 868         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 869         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 870             if (sticker.file == null) {
 871                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 872             }
 873
 874             Pair<InputStream, Long> data;
 875             try {
 876                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 877             } catch (IOException ignored) {
 878                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 879             }
 880
 881             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 882             stickers.add(stickerInfo);
 883         }
 884
 885         StickerInfo cover = null;
 886         if (pack.cover != null) {
 887             if (pack.cover.file == null) {
 888                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 889             }
 890
 891             Pair<InputStream, Long> data;
 892             try {
 893                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 894             } catch (IOException ignored) {
 895                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 896             }
 897
 898             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 899         }
 900
 901         return new SignalServiceStickerManifestUpload(
 902                 pack.title,
 903                 pack.author,
 904                 cover,
 905                 stickers);
 906     }
 907
 908     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 909         InputStream inputStream;
 910         if (zip != null) {
 911             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 912         } else {
 913             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 914         }
 915         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 916     }
 917
 918     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 919         if (zip != null) {
 920             final ZipEntry entry = zip.getEntry(subfile);
 921             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 922         } else {
 923             final File file = new File(rootPath, subfile);
 924             return new Pair<>(new FileInputStream(file), file.length());
 925         }
 926     }
 927
 928     void requestSyncGroups() throws IOException {
 929         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 930         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 931         try {
 932             sendSyncMessage(message);
 933         } catch (UntrustedIdentityException e) {
 934             e.printStackTrace();
 935         }
 936     }
 937
 938     void requestSyncContacts() throws IOException {
 939         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 940         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 941         try {
 942             sendSyncMessage(message);
 943         } catch (UntrustedIdentityException e) {
 944             e.printStackTrace();
 945         }
 946     }
 947
 948     void requestSyncBlocked() throws IOException {
 949         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 950         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 951         try {
 952             sendSyncMessage(message);
 953         } catch (UntrustedIdentityException e) {
 954             e.printStackTrace();
 955         }
 956     }
 957
 958     void requestSyncConfiguration() throws IOException {
 959         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 960         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 961         try {
 962             sendSyncMessage(message);
 963         } catch (UntrustedIdentityException e) {
 964             e.printStackTrace();
 965         }
 966     }
 967
 968     private byte[] getSenderCertificate() {
 969         // TODO support UUID capable sender certificates
 970         // byte[] certificate = accountManager.getSenderCertificate();
 971         byte[] certificate;
 972         try {
 973             certificate = accountManager.getSenderCertificateLegacy();
 974         } catch (IOException e) {
 975             System.err.println("Failed to get sender certificate: " + e);
 976             return null;
 977         }
 978         // TODO cache for a day
 979         return certificate;
 980     }
 981
 982     private byte[] getSelfUnidentifiedAccessKey() {
 983         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 984     }
 985
 986     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
 987         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 988         try {
 989             return new SignalProfile(
 990                     encryptedProfile.getIdentityKey(),
 991                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 992                     encryptedProfile.getAvatar(),
 993                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 994                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
 995             );
 996         } catch (InvalidCiphertextException e) {
 997             return null;
 998         }
 999     }
1000
1001     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
1002         ContactInfo contact = account.getContactStore().getContact(recipient);
1003         if (contact == null || contact.profileKey == null) {
1004             return null;
1005         }
1006         ProfileKey theirProfileKey;
1007         try {
1008             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
1009         } catch (InvalidInputException | IOException e) {
1010             throw new AssertionError(e);
1011         }
1012         SignalProfile targetProfile;
1013         try {
1014             targetProfile = decryptProfile(getRecipientProfile(recipient, Optional.absent()), theirProfileKey);
1015         } catch (IOException e) {
1016             System.err.println("Failed to get recipient profile: " + e);
1017             return null;
1018         }
1019
1020         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
1021             return null;
1022         }
1023
1024         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
1025             return KeyUtils.createUnrestrictedUnidentifiedAccess();
1026         }
1027
1028         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
1029     }
1030
1031     private Optional<UnidentifiedAccessPair> getAccessForSync() {
1032         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1033         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1034
1035         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1036             return Optional.absent();
1037         }
1038
1039         try {
1040             return Optional.of(new UnidentifiedAccessPair(
1041                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1042                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1043             ));
1044         } catch (InvalidCertificateException e) {
1045             return Optional.absent();
1046         }
1047     }
1048
1049     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1050         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1051         for (SignalServiceAddress recipient : recipients) {
1052             result.add(getAccessFor(recipient));
1053         }
1054         return result;
1055     }
1056
1057     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1058         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1059         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1060         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1061
1062         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1063             return Optional.absent();
1064         }
1065
1066         try {
1067             return Optional.of(new UnidentifiedAccessPair(
1068                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1069                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1070             ));
1071         } catch (InvalidCertificateException e) {
1072             return Optional.absent();
1073         }
1074     }
1075
1076     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1077         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1078
1079         if (unidentifiedAccess.isPresent()) {
1080             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1081         }
1082
1083         return Optional.absent();
1084     }
1085
1086     private void sendSyncMessage(SignalServiceSyncMessage message)
1087             throws IOException, UntrustedIdentityException {
1088         SignalServiceMessageSender messageSender = getMessageSender();
1089         try {
1090             messageSender.sendMessage(message, getAccessForSync());
1091         } catch (UntrustedIdentityException e) {
1092             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1093             throw e;
1094         }
1095     }
1096
1097     /**
1098      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1099      */
1100     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1101             throws EncapsulatedExceptions, IOException {
1102         final long timestamp = System.currentTimeMillis();
1103         messageBuilder.withTimestamp(timestamp);
1104         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1105
1106         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1107         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1108         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1109
1110         for (SendMessageResult result : results) {
1111             if (result.isUnregisteredFailure()) {
1112                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1113             } else if (result.isNetworkFailure()) {
1114                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1115             } else if (result.getIdentityFailure() != null) {
1116                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1117             }
1118         }
1119         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1120             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1121         }
1122         return timestamp;
1123     }
1124
1125     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1126         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1127
1128         for (String number : numbers) {
1129             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1130         }
1131         return signalServiceAddresses;
1132     }
1133
1134     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1135             throws IOException {
1136         if (messagePipe == null) {
1137             messagePipe = getMessageReceiver().createMessagePipe();
1138         }
1139         if (unidentifiedMessagePipe == null) {
1140             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1141         }
1142         SignalServiceDataMessage message = null;
1143         try {
1144             SignalServiceMessageSender messageSender = getMessageSender();
1145
1146             message = messageBuilder.build();
1147             if (message.getGroupContext().isPresent()) {
1148                 try {
1149                     final boolean isRecipientUpdate = false;
1150                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1151                     for (SendMessageResult r : result) {
1152                         if (r.getIdentityFailure() != null) {
1153                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1154                         }
1155                     }
1156                     return result;
1157                 } catch (UntrustedIdentityException e) {
1158                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1159                     return Collections.emptyList();
1160                 }
1161             } else if (recipients.size() == 1 && recipients.contains(account.getSelfAddress())) {
1162                 SignalServiceAddress recipient = account.getSelfAddress();
1163                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1164                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1165                         message.getTimestamp(),
1166                         message,
1167                         message.getExpiresInSeconds(),
1168                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1169                         false);
1170                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1171
1172                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1173                 try {
1174                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
1175                 } catch (UntrustedIdentityException e) {
1176                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1177                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
1178                 }
1179                 return results;
1180             } else {
1181                 // Send to all individually, so sync messages are sent correctly
1182                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1183                 for (SignalServiceAddress address : recipients) {
1184                     ContactInfo contact = account.getContactStore().getContact(address);
1185                     if (contact != null) {
1186                         messageBuilder.withExpiration(contact.messageExpirationTime);
1187                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1188                     } else {
1189                         messageBuilder.withExpiration(0);
1190                         messageBuilder.withProfileKey(null);
1191                     }
1192                     message = messageBuilder.build();
1193                     try {
1194                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
1195                         results.add(result);
1196                     } catch (UntrustedIdentityException e) {
1197                         account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1198                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
1199                     }
1200                 }
1201                 return results;
1202             }
1203         } finally {
1204             if (message != null && message.isEndSession()) {
1205                 for (SignalServiceAddress recipient : recipients) {
1206                     handleEndSession(recipient);
1207                 }
1208             }
1209             account.save();
1210         }
1211     }
1212
1213     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1214         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1215         try {
1216             return cipher.decrypt(envelope);
1217         } catch (ProtocolUntrustedIdentityException e) {
1218             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1219                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1220                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1221                 throw identityException;
1222             }
1223             throw new AssertionError(e);
1224         }
1225     }
1226
1227     private void handleEndSession(SignalServiceAddress source) {
1228         account.getSignalProtocolStore().deleteAllSessions(source);
1229     }
1230
1231     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1232         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1233             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1234             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1235             switch (groupInfo.getType()) {
1236                 case UPDATE:
1237                     if (group == null) {
1238                         group = new GroupInfo(groupInfo.getGroupId());
1239                     }
1240
1241                     if (groupInfo.getAvatar().isPresent()) {
1242                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1243                         if (avatar.isPointer()) {
1244                             try {
1245                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1246                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1247                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1248                             }
1249                         }
1250                     }
1251
1252                     if (groupInfo.getName().isPresent()) {
1253                         group.name = groupInfo.getName().get();
1254                     }
1255
1256                     if (groupInfo.getMembers().isPresent()) {
1257                         group.addMembers(groupInfo.getMembers().get()
1258                                 .stream()
1259                                 .map(this::resolveSignalServiceAddress)
1260                                 .collect(Collectors.toSet()));
1261                     }
1262
1263                     account.getGroupStore().updateGroup(group);
1264                     break;
1265                 case DELIVER:
1266                     if (group == null) {
1267                         try {
1268                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1269                         } catch (IOException | EncapsulatedExceptions e) {
1270                             e.printStackTrace();
1271                         }
1272                     }
1273                     break;
1274                 case QUIT:
1275                     if (group != null) {
1276                         group.removeMember(source);
1277                         account.getGroupStore().updateGroup(group);
1278                     }
1279                     break;
1280                 case REQUEST_INFO:
1281                     if (group != null) {
1282                         try {
1283                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1284                         } catch (IOException | EncapsulatedExceptions | AttachmentInvalidException e) {
1285                             e.printStackTrace();
1286                         } catch (GroupNotFoundException | NotAGroupMemberException e) {
1287                             // We have left this group, so don't send a group update message
1288                         }
1289                     }
1290                     break;
1291             }
1292         }
1293         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1294         if (message.isEndSession()) {
1295             handleEndSession(conversationPartnerAddress);
1296         }
1297         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1298             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1299                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1300                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1301                 if (group == null) {
1302                     group = new GroupInfo(groupInfo.getGroupId());
1303                 }
1304                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1305                     group.messageExpirationTime = message.getExpiresInSeconds();
1306                     account.getGroupStore().updateGroup(group);
1307                 }
1308             } else {
1309                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1310                 if (contact == null) {
1311                     contact = new ContactInfo(conversationPartnerAddress);
1312                 }
1313                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1314                     contact.messageExpirationTime = message.getExpiresInSeconds();
1315                     account.getContactStore().updateContact(contact);
1316                 }
1317             }
1318         }
1319         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1320             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1321                 if (attachment.isPointer()) {
1322                     try {
1323                         retrieveAttachment(attachment.asPointer());
1324                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1325                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1326                     }
1327                 }
1328             }
1329         }
1330         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1331             if (source.matches(account.getSelfAddress())) {
1332                 try {
1333                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1334                 } catch (InvalidInputException ignored) {
1335                 }
1336                 ContactInfo contact = account.getContactStore().getContact(source);
1337                 if (contact != null) {
1338                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1339                     account.getContactStore().updateContact(contact);
1340                 }
1341             } else {
1342                 ContactInfo contact = account.getContactStore().getContact(source);
1343                 if (contact == null) {
1344                     contact = new ContactInfo(source);
1345                 }
1346                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1347                 account.getContactStore().updateContact(contact);
1348             }
1349         }
1350         if (message.getPreviews().isPresent()) {
1351             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1352             for (SignalServiceDataMessage.Preview preview : previews) {
1353                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1354                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1355                     try {
1356                         retrieveAttachment(attachment);
1357                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1358                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1359                     }
1360                 }
1361             }
1362         }
1363     }
1364
1365     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1366         final File cachePath = new File(getMessageCachePath());
1367         if (!cachePath.exists()) {
1368             return;
1369         }
1370         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1371             if (!dir.isDirectory()) {
1372                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1373                 continue;
1374             }
1375
1376             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1377                 if (!fileEntry.isFile()) {
1378                     continue;
1379                 }
1380                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1381             }
1382             // Try to delete directory if empty
1383             dir.delete();
1384         }
1385     }
1386
1387     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1388         SignalServiceEnvelope envelope;
1389         try {
1390             envelope = Utils.loadEnvelope(fileEntry);
1391             if (envelope == null) {
1392                 return;
1393             }
1394         } catch (IOException e) {
1395             e.printStackTrace();
1396             return;
1397         }
1398         SignalServiceContent content = null;
1399         if (!envelope.isReceipt()) {
1400             try {
1401                 content = decryptMessage(envelope);
1402             } catch (Exception e) {
1403                 return;
1404             }
1405             handleMessage(envelope, content, ignoreAttachments);
1406         }
1407         account.save();
1408         handler.handleMessage(envelope, content, null);
1409         try {
1410             Files.delete(fileEntry.toPath());
1411         } catch (IOException e) {
1412             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1413         }
1414     }
1415
1416     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1417         retryFailedReceivedMessages(handler, ignoreAttachments);
1418         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1419
1420         if (messagePipe == null) {
1421             messagePipe = messageReceiver.createMessagePipe();
1422         }
1423
1424         while (true) {
1425             SignalServiceEnvelope envelope;
1426             SignalServiceContent content = null;
1427             Exception exception = null;
1428             final long now = new Date().getTime();
1429             try {
1430                 envelope = messagePipe.read(timeout, unit, envelope1 -> {
1431                     // store message on disk, before acknowledging receipt to the server
1432                     try {
1433                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1434                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1435                         Utils.storeEnvelope(envelope1, cacheFile);
1436                     } catch (IOException e) {
1437                         System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1438                     }
1439                 });
1440             } catch (TimeoutException e) {
1441                 if (returnOnTimeout)
1442                     return;
1443                 continue;
1444             } catch (InvalidVersionException e) {
1445                 System.err.println("Ignoring error: " + e.getMessage());
1446                 continue;
1447             }
1448             if (!envelope.isReceipt()) {
1449                 try {
1450                     content = decryptMessage(envelope);
1451                 } catch (Exception e) {
1452                     exception = e;
1453                 }
1454                 handleMessage(envelope, content, ignoreAttachments);
1455             }
1456             account.save();
1457             if (!isMessageBlocked(envelope, content)) {
1458                 handler.handleMessage(envelope, content, exception);
1459             }
1460             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1461                 File cacheFile = null;
1462                 try {
1463                     cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1464                     Files.delete(cacheFile.toPath());
1465                     // Try to delete directory if empty
1466                     new File(getMessageCachePath()).delete();
1467                 } catch (IOException e) {
1468                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1469                 }
1470             }
1471         }
1472     }
1473
1474     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1475         SignalServiceAddress source;
1476         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1477             source = envelope.getSourceAddress();
1478         } else if (content != null) {
1479             source = content.getSender();
1480         } else {
1481             return false;
1482         }
1483         ContactInfo sourceContact = account.getContactStore().getContact(source);
1484         if (sourceContact != null && sourceContact.blocked) {
1485             return true;
1486         }
1487
1488         if (content != null && content.getDataMessage().isPresent()) {
1489             SignalServiceDataMessage message = content.getDataMessage().get();
1490             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1491                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1492                 GroupInfo group = getGroup(groupInfo.getGroupId());
1493                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1494                     return true;
1495                 }
1496             }
1497         }
1498         return false;
1499     }
1500
1501     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1502         if (content != null) {
1503             SignalServiceAddress sender;
1504             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1505                 sender = envelope.getSourceAddress();
1506             } else {
1507                 sender = content.getSender();
1508             }
1509             if (content.getDataMessage().isPresent()) {
1510                 SignalServiceDataMessage message = content.getDataMessage().get();
1511
1512                 if (content.isNeedsReceipt()) {
1513                     try {
1514                         sendReceipt(sender, message.getTimestamp());
1515                     } catch (IOException | UntrustedIdentityException | IllegalArgumentException e) {
1516                         e.printStackTrace();
1517                     }
1518                 }
1519
1520                 handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments);
1521             }
1522             if (content.getSyncMessage().isPresent()) {
1523                 account.setMultiDevice(true);
1524                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1525                 if (syncMessage.getSent().isPresent()) {
1526                     SentTranscriptMessage message = syncMessage.getSent().get();
1527                     handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments);
1528                 }
1529                 if (syncMessage.getRequest().isPresent()) {
1530                     RequestMessage rm = syncMessage.getRequest().get();
1531                     if (rm.isContactsRequest()) {
1532                         try {
1533                             sendContacts();
1534                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1535                             e.printStackTrace();
1536                         }
1537                     }
1538                     if (rm.isGroupsRequest()) {
1539                         try {
1540                             sendGroups();
1541                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1542                             e.printStackTrace();
1543                         }
1544                     }
1545                     if (rm.isBlockedListRequest()) {
1546                         try {
1547                             sendBlockedList();
1548                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1549                             e.printStackTrace();
1550                         }
1551                     }
1552                     // TODO Handle rm.isConfigurationRequest();
1553                 }
1554                 if (syncMessage.getGroups().isPresent()) {
1555                     File tmpFile = null;
1556                     try {
1557                         tmpFile = IOUtils.createTempFile();
1558                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1559                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1560                             DeviceGroup g;
1561                             while ((g = s.read()) != null) {
1562                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1563                                 if (syncGroup == null) {
1564                                     syncGroup = new GroupInfo(g.getId());
1565                                 }
1566                                 if (g.getName().isPresent()) {
1567                                     syncGroup.name = g.getName().get();
1568                                 }
1569                                 syncGroup.addMembers(g.getMembers()
1570                                         .stream()
1571                                         .map(this::resolveSignalServiceAddress)
1572                                         .collect(Collectors.toSet()));
1573                                 if (!g.isActive()) {
1574                                     syncGroup.removeMember(account.getSelfAddress());
1575                                 } else {
1576                                     // Add ourself to the member set as it's marked as active
1577                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1578                                 }
1579                                 syncGroup.blocked = g.isBlocked();
1580                                 if (g.getColor().isPresent()) {
1581                                     syncGroup.color = g.getColor().get();
1582                                 }
1583
1584                                 if (g.getAvatar().isPresent()) {
1585                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1586                                 }
1587                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1588                                 syncGroup.archived = g.isArchived();
1589                                 account.getGroupStore().updateGroup(syncGroup);
1590                             }
1591                         }
1592                     } catch (Exception e) {
1593                         e.printStackTrace();
1594                     } finally {
1595                         if (tmpFile != null) {
1596                             try {
1597                                 Files.delete(tmpFile.toPath());
1598                             } catch (IOException e) {
1599                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1600                             }
1601                         }
1602                     }
1603                 }
1604                 if (syncMessage.getBlockedList().isPresent()) {
1605                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1606                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1607                         setContactBlocked(resolveSignalServiceAddress(address), true);
1608                     }
1609                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1610                         try {
1611                             setGroupBlocked(groupId, true);
1612                         } catch (GroupNotFoundException e) {
1613                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1614                         }
1615                     }
1616                 }
1617                 if (syncMessage.getContacts().isPresent()) {
1618                     File tmpFile = null;
1619                     try {
1620                         tmpFile = IOUtils.createTempFile();
1621                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1622                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1623                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1624                             if (contactsMessage.isComplete()) {
1625                                 account.getContactStore().clear();
1626                             }
1627                             DeviceContact c;
1628                             while ((c = s.read()) != null) {
1629                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1630                                     account.setProfileKey(c.getProfileKey().get());
1631                                 }
1632                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1633                                 ContactInfo contact = account.getContactStore().getContact(address);
1634                                 if (contact == null) {
1635                                     contact = new ContactInfo(address);
1636                                 }
1637                                 if (c.getName().isPresent()) {
1638                                     contact.name = c.getName().get();
1639                                 }
1640                                 if (c.getColor().isPresent()) {
1641                                     contact.color = c.getColor().get();
1642                                 }
1643                                 if (c.getProfileKey().isPresent()) {
1644                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1645                                 }
1646                                 if (c.getVerified().isPresent()) {
1647                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1648                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1649                                 }
1650                                 if (c.getExpirationTimer().isPresent()) {
1651                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1652                                 }
1653                                 contact.blocked = c.isBlocked();
1654                                 contact.inboxPosition = c.getInboxPosition().orNull();
1655                                 contact.archived = c.isArchived();
1656                                 account.getContactStore().updateContact(contact);
1657
1658                                 if (c.getAvatar().isPresent()) {
1659                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1660                                 }
1661                             }
1662                         }
1663                     } catch (Exception e) {
1664                         e.printStackTrace();
1665                     } finally {
1666                         if (tmpFile != null) {
1667                             try {
1668                                 Files.delete(tmpFile.toPath());
1669                             } catch (IOException e) {
1670                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1671                             }
1672                         }
1673                     }
1674                 }
1675                 if (syncMessage.getVerified().isPresent()) {
1676                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1677                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1678                 }
1679                 if (syncMessage.getConfiguration().isPresent()) {
1680                     // TODO
1681                 }
1682             }
1683         }
1684     }
1685
1686     private File getContactAvatarFile(String number) {
1687         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
1688     }
1689
1690     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException, MissingConfigurationException {
1691         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1692         if (attachment.isPointer()) {
1693             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1694             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1695         } else {
1696             SignalServiceAttachmentStream stream = attachment.asStream();
1697             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1698         }
1699     }
1700
1701     private File getGroupAvatarFile(byte[] groupId) {
1702         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1703     }
1704
1705     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException, MissingConfigurationException {
1706         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1707         if (attachment.isPointer()) {
1708             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1709             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1710         } else {
1711             SignalServiceAttachmentStream stream = attachment.asStream();
1712             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1713         }
1714     }
1715
1716     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1717         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
1718     }
1719
1720     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
1721         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
1722         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
1723     }
1724
1725     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException, MissingConfigurationException {
1726         if (storePreview && pointer.getPreview().isPresent()) {
1727             File previewFile = new File(outputFile + ".preview");
1728             try (OutputStream output = new FileOutputStream(previewFile)) {
1729                 byte[] preview = pointer.getPreview().get();
1730                 output.write(preview, 0, preview.length);
1731             } catch (FileNotFoundException e) {
1732                 e.printStackTrace();
1733                 return null;
1734             }
1735         }
1736
1737         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1738
1739         File tmpFile = IOUtils.createTempFile();
1740         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE)) {
1741             try (OutputStream output = new FileOutputStream(outputFile)) {
1742                 byte[] buffer = new byte[4096];
1743                 int read;
1744
1745                 while ((read = input.read(buffer)) != -1) {
1746                     output.write(buffer, 0, read);
1747                 }
1748             } catch (FileNotFoundException e) {
1749                 e.printStackTrace();
1750                 return null;
1751             }
1752         } finally {
1753             try {
1754                 Files.delete(tmpFile.toPath());
1755             } catch (IOException e) {
1756                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1757             }
1758         }
1759         return outputFile;
1760     }
1761
1762     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException, MissingConfigurationException {
1763         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1764         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
1765     }
1766
1767     @Override
1768     public boolean isRemote() {
1769         return false;
1770     }
1771
1772     @Override
1773     public String getObjectPath() {
1774         return null;
1775     }
1776
1777     private void sendGroups() throws IOException, UntrustedIdentityException {
1778         File groupsFile = IOUtils.createTempFile();
1779
1780         try {
1781             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1782                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1783                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1784                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1785                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1786                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1787                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1788                 }
1789             }
1790
1791             if (groupsFile.exists() && groupsFile.length() > 0) {
1792                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1793                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1794                             .withStream(groupsFileStream)
1795                             .withContentType("application/octet-stream")
1796                             .withLength(groupsFile.length())
1797                             .build();
1798
1799                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1800                 }
1801             }
1802         } finally {
1803             try {
1804                 Files.delete(groupsFile.toPath());
1805             } catch (IOException e) {
1806                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1807             }
1808         }
1809     }
1810
1811     public void sendContacts() throws IOException, UntrustedIdentityException {
1812         File contactsFile = IOUtils.createTempFile();
1813
1814         try {
1815             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1816                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1817                 for (ContactInfo record : account.getContactStore().getContacts()) {
1818                     VerifiedMessage verifiedMessage = null;
1819                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1820                     if (currentIdentity != null) {
1821                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1822                     }
1823
1824                     ProfileKey profileKey = null;
1825                     try {
1826                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1827                     } catch (InvalidInputException ignored) {
1828                     }
1829                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1830                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1831                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1832                             Optional.of(record.messageExpirationTime),
1833                             Optional.fromNullable(record.inboxPosition), record.archived));
1834                 }
1835
1836                 if (account.getProfileKey() != null) {
1837                     // Send our own profile key as well
1838                     out.write(new DeviceContact(account.getSelfAddress(),
1839                             Optional.absent(), Optional.absent(),
1840                             Optional.absent(), Optional.absent(),
1841                             Optional.of(account.getProfileKey()),
1842                             false, Optional.absent(), Optional.absent(), false));
1843                 }
1844             }
1845
1846             if (contactsFile.exists() && contactsFile.length() > 0) {
1847                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1848                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1849                             .withStream(contactsFileStream)
1850                             .withContentType("application/octet-stream")
1851                             .withLength(contactsFile.length())
1852                             .build();
1853
1854                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1855                 }
1856             }
1857         } finally {
1858             try {
1859                 Files.delete(contactsFile.toPath());
1860             } catch (IOException e) {
1861                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1862             }
1863         }
1864     }
1865
1866     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1867         List<SignalServiceAddress> addresses = new ArrayList<>();
1868         for (ContactInfo record : account.getContactStore().getContacts()) {
1869             if (record.blocked) {
1870                 addresses.add(record.getAddress());
1871             }
1872         }
1873         List<byte[]> groupIds = new ArrayList<>();
1874         for (GroupInfo record : account.getGroupStore().getGroups()) {
1875             if (record.blocked) {
1876                 groupIds.add(record.groupId);
1877             }
1878         }
1879         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1880     }
1881
1882     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1883         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1884         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1885     }
1886
1887     public List<ContactInfo> getContacts() {
1888         return account.getContactStore().getContacts();
1889     }
1890
1891     public ContactInfo getContact(String number) {
1892         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1893     }
1894
1895     public GroupInfo getGroup(byte[] groupId) {
1896         return account.getGroupStore().getGroup(groupId);
1897     }
1898
1899     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1900         return account.getSignalProtocolStore().getIdentities();
1901     }
1902
1903     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1904         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1905     }
1906
1907     /**
1908      * Trust this the identity with this fingerprint
1909      *
1910      * @param name        username of the identity
1911      * @param fingerprint Fingerprint
1912      */
1913     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1914         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1915         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1916         if (ids == null) {
1917             return false;
1918         }
1919         for (JsonIdentityKeyStore.Identity id : ids) {
1920             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1921                 continue;
1922             }
1923
1924             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1925             try {
1926                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1927             } catch (IOException | UntrustedIdentityException e) {
1928                 e.printStackTrace();
1929             }
1930             account.save();
1931             return true;
1932         }
1933         return false;
1934     }
1935
1936     /**
1937      * Trust this the identity with this safety number
1938      *
1939      * @param name         username of the identity
1940      * @param safetyNumber Safety number
1941      */
1942     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1943         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1944         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1945         if (ids == null) {
1946             return false;
1947         }
1948         for (JsonIdentityKeyStore.Identity id : ids) {
1949             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1950                 continue;
1951             }
1952
1953             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1954             try {
1955                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1956             } catch (IOException | UntrustedIdentityException e) {
1957                 e.printStackTrace();
1958             }
1959             account.save();
1960             return true;
1961         }
1962         return false;
1963     }
1964
1965     /**
1966      * Trust all keys of this identity without verification
1967      *
1968      * @param name username of the identity
1969      */
1970     public boolean trustIdentityAllKeys(String name) {
1971         SignalServiceAddress address = resolveSignalServiceAddress(name);
1972         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1973         if (ids == null) {
1974             return false;
1975         }
1976         for (JsonIdentityKeyStore.Identity id : ids) {
1977             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1978                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1979                 try {
1980                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1981                 } catch (IOException | UntrustedIdentityException e) {
1982                     e.printStackTrace();
1983                 }
1984             }
1985         }
1986         account.save();
1987         return true;
1988     }
1989
1990     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
1991         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), theirAddress, theirIdentityKey);
1992     }
1993
1994     void saveAccount() {
1995         account.save();
1996     }
1997
1998     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
1999         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
2000         return resolveSignalServiceAddress(canonicalizedNumber);
2001     }
2002
2003     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2004         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2005
2006         return resolveSignalServiceAddress(address);
2007     }
2008
2009     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2010         if (address.matches(account.getSelfAddress())) {
2011             return account.getSelfAddress();
2012         }
2013
2014         return account.getRecipientStore().resolveServiceAddress(address);
2015     }
2016
2017     @Override
2018     public void close() throws IOException {
2019         if (messagePipe != null) {
2020             messagePipe.shutdown();
2021             messagePipe = null;
2022         }
2023
2024         if (unidentifiedMessagePipe != null) {
2025             unidentifiedMessagePipe.shutdown();
2026             unidentifiedMessagePipe = null;
2027         }
2028
2029         account.close();
2030     }
2031
2032     public interface ReceiveMessageHandler {
2033
2034         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2035     }
2036 }