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.storage.SignalAccount;
  22 import org.asamk.signal.storage.contacts.ContactInfo;
  23 import org.asamk.signal.storage.groups.GroupInfo;
  24 import org.asamk.signal.storage.groups.JsonGroupStore;
  25 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  26 import org.asamk.signal.util.IOUtils;
  27 import org.asamk.signal.util.Util;
  28 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  29 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  30 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  31 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  32 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  33 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  34 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  35 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  36 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  37 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  38 import org.signal.libsignal.metadata.SelfSendException;
  39 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  40 import org.signal.zkgroup.InvalidInputException;
  41 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  42 import org.signal.zkgroup.profiles.ProfileKey;
  43 import org.whispersystems.libsignal.IdentityKey;
  44 import org.whispersystems.libsignal.IdentityKeyPair;
  45 import org.whispersystems.libsignal.InvalidKeyException;
  46 import org.whispersystems.libsignal.InvalidMessageException;
  47 import org.whispersystems.libsignal.InvalidVersionException;
  48 import org.whispersystems.libsignal.ecc.Curve;
  49 import org.whispersystems.libsignal.ecc.ECKeyPair;
  50 import org.whispersystems.libsignal.ecc.ECPublicKey;
  51 import org.whispersystems.libsignal.state.PreKeyRecord;
  52 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  53 import org.whispersystems.libsignal.util.KeyHelper;
  54 import org.whispersystems.libsignal.util.Medium;
  55 import org.whispersystems.libsignal.util.Pair;
  56 import org.whispersystems.libsignal.util.guava.Optional;
  57 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  58 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  59 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  60 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  61 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  62 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  63 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  64 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  65 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  66 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  67 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  68 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  69 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  70 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  71 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  72 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  73 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  74 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  79 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  80 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  81 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  82 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  83 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  84 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  85 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  86 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  87 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  88 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  89 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  90 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  91 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  92 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
  93 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  94 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  95 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  96 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
  97 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  98 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  99 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 100 import org.whispersystems.signalservice.api.util.SleepTimer;
 101 import org.whispersystems.signalservice.api.util.StreamDetails;
 102 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 103 import org.whispersystems.signalservice.api.util.UuidUtil;
 104 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 105 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 106 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 107 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 108 import org.whispersystems.signalservice.internal.util.Hex;
 109 import org.whispersystems.util.Base64;
 110
 111 import java.io.Closeable;
 112 import java.io.File;
 113 import java.io.FileInputStream;
 114 import java.io.FileNotFoundException;
 115 import java.io.FileOutputStream;
 116 import java.io.IOException;
 117 import java.io.InputStream;
 118 import java.io.OutputStream;
 119 import java.net.URI;
 120 import java.net.URISyntaxException;
 121 import java.net.URLEncoder;
 122 import java.nio.file.Files;
 123 import java.nio.file.Paths;
 124 import java.nio.file.StandardCopyOption;
 125 import java.util.ArrayList;
 126 import java.util.Arrays;
 127 import java.util.Collection;
 128 import java.util.Collections;
 129 import java.util.Date;
 130 import java.util.HashSet;
 131 import java.util.LinkedList;
 132 import java.util.List;
 133 import java.util.Locale;
 134 import java.util.Objects;
 135 import java.util.Set;
 136 import java.util.UUID;
 137 import java.util.concurrent.ExecutionException;
 138 import java.util.concurrent.ExecutorService;
 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 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 setProfile(String name, File avatar) throws IOException {
 293         try (final StreamDetails streamDetails = avatar == null ? null : Utils.createStreamDetailsFromFile(avatar)) {
 294             accountManager.setVersionedProfile(account.getUuid(), account.getProfileKey(), name, streamDetails);
 295         }
 296     }
 297
 298     public void unregister() throws IOException {
 299         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 300         // If this is the master device, other users can't send messages to this number anymore.
 301         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 302         accountManager.setGcmId(Optional.absent());
 303
 304         account.setRegistered(false);
 305         account.save();
 306     }
 307
 308     public List<DeviceInfo> getLinkedDevices() throws IOException {
 309         List<DeviceInfo> devices = accountManager.getDevices();
 310         account.setMultiDevice(devices.size() > 1);
 311         account.save();
 312         return devices;
 313     }
 314
 315     public void removeLinkedDevices(int deviceId) throws IOException {
 316         accountManager.removeDevice(deviceId);
 317         List<DeviceInfo> devices = accountManager.getDevices();
 318         account.setMultiDevice(devices.size() > 1);
 319         account.save();
 320     }
 321
 322     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 323         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 324
 325         addDevice(info.deviceIdentifier, info.deviceKey);
 326     }
 327
 328     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 329         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 330         String verificationCode = accountManager.getNewDeviceVerificationCode();
 331
 332         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 333         account.setMultiDevice(true);
 334         account.save();
 335     }
 336
 337     private List<PreKeyRecord> generatePreKeys() {
 338         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 339
 340         final int offset = account.getPreKeyIdOffset();
 341         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 342             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 343             ECKeyPair keyPair = Curve.generateKeyPair();
 344             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 345
 346             records.add(record);
 347         }
 348
 349         account.addPreKeys(records);
 350         account.save();
 351
 352         return records;
 353     }
 354
 355     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 356         try {
 357             ECKeyPair keyPair = Curve.generateKeyPair();
 358             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 359             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 360
 361             account.addSignedPreKey(record);
 362             account.save();
 363
 364             return record;
 365         } catch (InvalidKeyException e) {
 366             throw new AssertionError(e);
 367         }
 368     }
 369
 370     public void verifyAccount(String verificationCode, String pin) throws IOException {
 371         verificationCode = verificationCode.replace("-", "");
 372         account.setSignalingKey(KeyUtils.createSignalingKey());
 373         // TODO make unrestricted unidentified access configurable
 374         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities);
 375
 376         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 377         // TODO response.isStorageCapable()
 378         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 379         account.setRegistered(true);
 380         account.setUuid(uuid);
 381         account.setRegistrationLockPin(pin);
 382         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 383
 384         refreshPreKeys();
 385         account.save();
 386     }
 387
 388     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 389         if (pin.isPresent()) {
 390             account.setRegistrationLockPin(pin.get());
 391             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 392         } else {
 393             account.setRegistrationLockPin(null);
 394             accountManager.removeRegistrationLockV1();
 395         }
 396         account.save();
 397     }
 398
 399     void refreshPreKeys() throws IOException {
 400         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 401         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 402         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 403
 404         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 405     }
 406
 407     private SignalServiceMessageReceiver getMessageReceiver() {
 408         // TODO implement ZkGroup support
 409         final ClientZkProfileOperations clientZkProfileOperations = null;
 410         return new SignalServiceMessageReceiver(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), userAgent, null, timer, clientZkProfileOperations);
 411     }
 412
 413     private SignalServiceMessageSender getMessageSender() {
 414         // TODO implement ZkGroup support
 415         final ClientZkProfileOperations clientZkProfileOperations = null;
 416         final boolean attachmentsV3 = false;
 417         final ExecutorService executor = null;
 418         return new SignalServiceMessageSender(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 419                 account.getDeviceId(), account.getSignalProtocolStore(), userAgent, account.isMultiDevice(), attachmentsV3, Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent(), clientZkProfileOperations, executor);
 420     }
 421
 422     private SignalServiceProfile getEncryptedRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 423         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 424                 : messagePipe;
 425
 426         if (pipe != null) {
 427             try {
 428                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS).getProfile();
 429             } catch (IOException | InterruptedException | ExecutionException | TimeoutException ignored) {
 430             }
 431         }
 432
 433         SignalServiceMessageReceiver receiver = getMessageReceiver();
 434         try {
 435             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS).getProfile();
 436         } catch (InterruptedException | ExecutionException | TimeoutException e) {
 437             throw new IOException("Failed to retrieve profile", e);
 438         }
 439     }
 440
 441     private SignalProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess, ProfileKey profileKey) throws IOException {
 442         return decryptProfile(getEncryptedRecipientProfile(address, unidentifiedAccess), profileKey);
 443     }
 444
 445     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 446         File file = getGroupAvatarFile(groupId);
 447         if (!file.exists()) {
 448             return Optional.absent();
 449         }
 450
 451         return Optional.of(Utils.createAttachment(file));
 452     }
 453
 454     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 455         File file = getContactAvatarFile(number);
 456         if (!file.exists()) {
 457             return Optional.absent();
 458         }
 459
 460         return Optional.of(Utils.createAttachment(file));
 461     }
 462
 463     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 464         GroupInfo g = account.getGroupStore().getGroup(groupId);
 465         if (g == null) {
 466             throw new GroupNotFoundException(groupId);
 467         }
 468         if (!g.isMember(account.getSelfAddress())) {
 469             throw new NotAGroupMemberException(groupId, g.name);
 470         }
 471         return g;
 472     }
 473
 474     public List<GroupInfo> getGroups() {
 475         return account.getGroupStore().getGroups();
 476     }
 477
 478     public long sendGroupMessage(String messageText, List<String> attachments,
 479                                  byte[] groupId)
 480             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 481         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 482         if (attachments != null) {
 483             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 484         }
 485         if (groupId != null) {
 486             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 487                     .withId(groupId)
 488                     .build();
 489             messageBuilder.asGroupMessage(group);
 490         }
 491
 492         final GroupInfo g = getGroupForSending(groupId);
 493
 494         messageBuilder.withExpiration(g.messageExpirationTime);
 495
 496         return sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 497     }
 498
 499     public void sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 500                                          long targetSentTimestamp, byte[] groupId)
 501             throws IOException, EncapsulatedExceptions, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 502         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 503         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 504                 .withReaction(reaction);
 505         if (groupId != null) {
 506             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 507                     .withId(groupId)
 508                     .build();
 509             messageBuilder.asGroupMessage(group);
 510         }
 511         final GroupInfo g = getGroupForSending(groupId);
 512         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 513     }
 514
 515     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions, NotAGroupMemberException {
 516         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 517                 .withId(groupId)
 518                 .build();
 519
 520         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 521                 .asGroupMessage(group);
 522
 523         final GroupInfo g = getGroupForSending(groupId);
 524         g.removeMember(account.getSelfAddress());
 525         account.getGroupStore().updateGroup(g);
 526
 527         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 528     }
 529
 530     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 531         GroupInfo g;
 532         if (groupId == null) {
 533             // Create new group
 534             g = new GroupInfo(KeyUtils.createGroupId());
 535             g.addMembers(Collections.singleton(account.getSelfAddress()));
 536         } else {
 537             g = getGroupForSending(groupId);
 538         }
 539
 540         if (name != null) {
 541             g.name = name;
 542         }
 543
 544         if (members != null) {
 545             final Set<String> newE164Members = new HashSet<>();
 546             for (SignalServiceAddress member : members) {
 547                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 548                     continue;
 549                 }
 550                 newE164Members.add(member.getNumber().get());
 551             }
 552
 553             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 554             if (contacts.size() != newE164Members.size()) {
 555                 // Some of the new members are not registered on Signal
 556                 for (ContactTokenDetails contact : contacts) {
 557                     newE164Members.remove(contact.getNumber());
 558                 }
 559                 System.err.println("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 560                 System.err.println("Aborting…");
 561                 System.exit(1);
 562             }
 563
 564             g.addMembers(members);
 565         }
 566
 567         if (avatarFile != null) {
 568             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 569             File aFile = getGroupAvatarFile(g.groupId);
 570             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 571         }
 572
 573         account.getGroupStore().updateGroup(g);
 574
 575         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 576
 577         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 578         return g.groupId;
 579     }
 580
 581     void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 582         if (groupId == null) {
 583             return;
 584         }
 585         GroupInfo g = getGroupForSending(groupId);
 586
 587         if (!g.isMember(recipient)) {
 588             return;
 589         }
 590
 591         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 592
 593         // Send group message only to the recipient who requested it
 594         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 595     }
 596
 597     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) throws AttachmentInvalidException {
 598         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 599                 .withId(g.groupId)
 600                 .withName(g.name)
 601                 .withMembers(new ArrayList<>(g.getMembers()));
 602
 603         File aFile = getGroupAvatarFile(g.groupId);
 604         if (aFile.exists()) {
 605             try {
 606                 group.withAvatar(Utils.createAttachment(aFile));
 607             } catch (IOException e) {
 608                 throw new AttachmentInvalidException(aFile.toString(), e);
 609             }
 610         }
 611
 612         return SignalServiceDataMessage.newBuilder()
 613                 .asGroupMessage(group.build())
 614                 .withExpiration(g.messageExpirationTime);
 615     }
 616
 617     void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 618         if (groupId == null) {
 619             return;
 620         }
 621
 622         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 623                 .withId(groupId);
 624
 625         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 626                 .asGroupMessage(group.build());
 627
 628         // Send group info request message to the recipient who sent us a message with this groupId
 629         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 630     }
 631
 632     void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 633         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 634                 Collections.singletonList(messageId),
 635                 System.currentTimeMillis());
 636
 637         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 638     }
 639
 640     public long sendMessage(String messageText, List<String> attachments,
 641                             List<String> recipients)
 642             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 643         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 644         if (attachments != null) {
 645             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 646
 647             // Upload attachments here, so we only upload once even for multiple recipients
 648             SignalServiceMessageSender messageSender = getMessageSender();
 649             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 650             for (SignalServiceAttachment attachment : attachmentStreams) {
 651                 if (attachment.isStream()) {
 652                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 653                 } else if (attachment.isPointer()) {
 654                     attachmentPointers.add(attachment.asPointer());
 655                 }
 656             }
 657
 658             messageBuilder.withAttachments(attachmentPointers);
 659         }
 660         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 661     }
 662
 663     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 664                                     long targetSentTimestamp, List<String> recipients)
 665             throws IOException, EncapsulatedExceptions, InvalidNumberException {
 666         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 667         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 668                 .withReaction(reaction);
 669         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 670     }
 671
 672     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 673         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 674                 .asEndSessionMessage();
 675
 676         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 677         try {
 678             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 679         } catch (Exception e) {
 680             for (SignalServiceAddress address : signalServiceAddresses) {
 681                 handleEndSession(address);
 682             }
 683             account.save();
 684             throw e;
 685         }
 686     }
 687
 688     public String getContactName(String number) throws InvalidNumberException {
 689         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 690         if (contact == null) {
 691             return "";
 692         } else {
 693             return contact.name;
 694         }
 695     }
 696
 697     public void setContactName(String number, String name) throws InvalidNumberException {
 698         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 699         ContactInfo contact = account.getContactStore().getContact(address);
 700         if (contact == null) {
 701             contact = new ContactInfo(address);
 702             System.err.println("Add contact " + contact.number + " named " + name);
 703         } else {
 704             System.err.println("Updating contact " + contact.number + " name " + contact.name + " -> " + name);
 705         }
 706         contact.name = name;
 707         account.getContactStore().updateContact(contact);
 708         account.save();
 709     }
 710
 711     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 712         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 713     }
 714
 715     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 716         ContactInfo contact = account.getContactStore().getContact(address);
 717         if (contact == null) {
 718             contact = new ContactInfo(address);
 719             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + address.getNumber().orNull());
 720         } else {
 721             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + address.getNumber().orNull());
 722         }
 723         contact.blocked = blocked;
 724         account.getContactStore().updateContact(contact);
 725         account.save();
 726     }
 727
 728     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 729         GroupInfo group = getGroup(groupId);
 730         if (group == null) {
 731             throw new GroupNotFoundException(groupId);
 732         } else {
 733             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 734             group.blocked = blocked;
 735             account.getGroupStore().updateGroup(group);
 736             account.save();
 737         }
 738     }
 739
 740     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 741         if (groupId.length == 0) {
 742             groupId = null;
 743         }
 744         if (name.isEmpty()) {
 745             name = null;
 746         }
 747         if (members.isEmpty()) {
 748             members = null;
 749         }
 750         if (avatar.isEmpty()) {
 751             avatar = null;
 752         }
 753         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 754     }
 755
 756     /**
 757      * Change the expiration timer for a contact
 758      */
 759     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
 760         ContactInfo contact = account.getContactStore().getContact(address);
 761         contact.messageExpirationTime = messageExpirationTimer;
 762         account.getContactStore().updateContact(contact);
 763         sendExpirationTimerUpdate(address);
 764         account.save();
 765     }
 766
 767     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
 768         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 769                 .asExpirationUpdate();
 770         sendMessage(messageBuilder, Collections.singleton(address));
 771     }
 772
 773     /**
 774      * Change the expiration timer for a contact
 775      */
 776     public void setExpirationTimer(String number, int messageExpirationTimer) throws IOException, InvalidNumberException {
 777         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 778         setExpirationTimer(address, messageExpirationTimer);
 779     }
 780
 781     /**
 782      * Change the expiration timer for a group
 783      */
 784     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 785         GroupInfo g = account.getGroupStore().getGroup(groupId);
 786         g.messageExpirationTime = messageExpirationTimer;
 787         account.getGroupStore().updateGroup(g);
 788     }
 789
 790     /**
 791      * Upload the sticker pack from path.
 792      *
 793      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 794      * @return if successful, returns the URL to install the sticker pack in the signal app
 795      */
 796     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 797         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 798
 799         SignalServiceMessageSender messageSender = getMessageSender();
 800
 801         byte[] packKey = KeyUtils.createStickerUploadKey();
 802         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 803
 804         try {
 805             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 806                     .toString();
 807         } catch (URISyntaxException e) {
 808             throw new AssertionError(e);
 809         }
 810     }
 811
 812     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 813         ZipFile zip = null;
 814         String rootPath = null;
 815
 816         final File file = new File(path);
 817         if (file.getName().endsWith(".zip")) {
 818             zip = new ZipFile(file);
 819         } else if (file.getName().equals("manifest.json")) {
 820             rootPath = file.getParent();
 821         } else {
 822             throw new StickerPackInvalidException("Could not find manifest.json");
 823         }
 824
 825         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 826
 827         if (pack.stickers == null) {
 828             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 829         }
 830
 831         if (pack.stickers.isEmpty()) {
 832             throw new StickerPackInvalidException("Must include stickers.");
 833         }
 834
 835         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 836         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 837             if (sticker.file == null) {
 838                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 839             }
 840
 841             Pair<InputStream, Long> data;
 842             try {
 843                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 844             } catch (IOException ignored) {
 845                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 846             }
 847
 848             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 849             stickers.add(stickerInfo);
 850         }
 851
 852         StickerInfo cover = null;
 853         if (pack.cover != null) {
 854             if (pack.cover.file == null) {
 855                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 856             }
 857
 858             Pair<InputStream, Long> data;
 859             try {
 860                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 861             } catch (IOException ignored) {
 862                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 863             }
 864
 865             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 866         }
 867
 868         return new SignalServiceStickerManifestUpload(
 869                 pack.title,
 870                 pack.author,
 871                 cover,
 872                 stickers);
 873     }
 874
 875     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 876         InputStream inputStream;
 877         if (zip != null) {
 878             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 879         } else {
 880             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 881         }
 882         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 883     }
 884
 885     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 886         if (zip != null) {
 887             final ZipEntry entry = zip.getEntry(subfile);
 888             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 889         } else {
 890             final File file = new File(rootPath, subfile);
 891             return new Pair<>(new FileInputStream(file), file.length());
 892         }
 893     }
 894
 895     void requestSyncGroups() throws IOException {
 896         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 897         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 898         try {
 899             sendSyncMessage(message);
 900         } catch (UntrustedIdentityException e) {
 901             e.printStackTrace();
 902         }
 903     }
 904
 905     void requestSyncContacts() throws IOException {
 906         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 907         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 908         try {
 909             sendSyncMessage(message);
 910         } catch (UntrustedIdentityException e) {
 911             e.printStackTrace();
 912         }
 913     }
 914
 915     void requestSyncBlocked() throws IOException {
 916         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 917         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 918         try {
 919             sendSyncMessage(message);
 920         } catch (UntrustedIdentityException e) {
 921             e.printStackTrace();
 922         }
 923     }
 924
 925     void requestSyncConfiguration() throws IOException {
 926         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 927         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 928         try {
 929             sendSyncMessage(message);
 930         } catch (UntrustedIdentityException e) {
 931             e.printStackTrace();
 932         }
 933     }
 934
 935     private byte[] getSenderCertificate() {
 936         // TODO support UUID capable sender certificates
 937         // byte[] certificate = accountManager.getSenderCertificate();
 938         byte[] certificate;
 939         try {
 940             certificate = accountManager.getSenderCertificateLegacy();
 941         } catch (IOException e) {
 942             System.err.println("Failed to get sender certificate: " + e);
 943             return null;
 944         }
 945         // TODO cache for a day
 946         return certificate;
 947     }
 948
 949     private byte[] getSelfUnidentifiedAccessKey() {
 950         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 951     }
 952
 953     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
 954         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 955         try {
 956             return new SignalProfile(
 957                     encryptedProfile.getIdentityKey(),
 958                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 959                     encryptedProfile.getAvatar(),
 960                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 961                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
 962             );
 963         } catch (InvalidCiphertextException e) {
 964             return null;
 965         }
 966     }
 967
 968     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 969         ContactInfo contact = account.getContactStore().getContact(recipient);
 970         if (contact == null || contact.profileKey == null) {
 971             return null;
 972         }
 973         ProfileKey theirProfileKey;
 974         try {
 975             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
 976         } catch (InvalidInputException | IOException e) {
 977             throw new AssertionError(e);
 978         }
 979         SignalProfile targetProfile;
 980         try {
 981             targetProfile = getRecipientProfile(recipient, Optional.absent(), theirProfileKey);
 982         } catch (IOException e) {
 983             System.err.println("Failed to get recipient profile: " + e);
 984             return null;
 985         }
 986
 987         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
 988             return null;
 989         }
 990
 991         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
 992             return KeyUtils.createUnrestrictedUnidentifiedAccess();
 993         }
 994
 995         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
 996     }
 997
 998     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 999         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1000         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1001
1002         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1003             return Optional.absent();
1004         }
1005
1006         try {
1007             return Optional.of(new UnidentifiedAccessPair(
1008                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1009                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1010             ));
1011         } catch (InvalidCertificateException e) {
1012             return Optional.absent();
1013         }
1014     }
1015
1016     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1017         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1018         for (SignalServiceAddress recipient : recipients) {
1019             result.add(getAccessFor(recipient));
1020         }
1021         return result;
1022     }
1023
1024     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1025         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1026         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1027         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1028
1029         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1030             return Optional.absent();
1031         }
1032
1033         try {
1034             return Optional.of(new UnidentifiedAccessPair(
1035                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1036                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1037             ));
1038         } catch (InvalidCertificateException e) {
1039             return Optional.absent();
1040         }
1041     }
1042
1043     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1044         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1045
1046         if (unidentifiedAccess.isPresent()) {
1047             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1048         }
1049
1050         return Optional.absent();
1051     }
1052
1053     private void sendSyncMessage(SignalServiceSyncMessage message)
1054             throws IOException, UntrustedIdentityException {
1055         SignalServiceMessageSender messageSender = getMessageSender();
1056         try {
1057             messageSender.sendMessage(message, getAccessForSync());
1058         } catch (UntrustedIdentityException e) {
1059             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1060             throw e;
1061         }
1062     }
1063
1064     /**
1065      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1066      */
1067     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1068             throws EncapsulatedExceptions, IOException {
1069         final long timestamp = System.currentTimeMillis();
1070         messageBuilder.withTimestamp(timestamp);
1071         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1072
1073         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1074         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1075         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1076
1077         for (SendMessageResult result : results) {
1078             if (result.isUnregisteredFailure()) {
1079                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1080             } else if (result.isNetworkFailure()) {
1081                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1082             } else if (result.getIdentityFailure() != null) {
1083                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1084             }
1085         }
1086         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1087             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1088         }
1089         return timestamp;
1090     }
1091
1092     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1093         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1094
1095         for (String number : numbers) {
1096             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1097         }
1098         return signalServiceAddresses;
1099     }
1100
1101     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1102             throws IOException {
1103         if (messagePipe == null) {
1104             messagePipe = getMessageReceiver().createMessagePipe();
1105         }
1106         if (unidentifiedMessagePipe == null) {
1107             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1108         }
1109         SignalServiceDataMessage message = null;
1110         try {
1111             message = messageBuilder.build();
1112             if (message.getGroupContext().isPresent()) {
1113                 try {
1114                     SignalServiceMessageSender messageSender = getMessageSender();
1115                     final boolean isRecipientUpdate = false;
1116                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1117                     for (SendMessageResult r : result) {
1118                         if (r.getIdentityFailure() != null) {
1119                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1120                         }
1121                     }
1122                     return result;
1123                 } catch (UntrustedIdentityException e) {
1124                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1125                     return Collections.emptyList();
1126                 }
1127             } else {
1128                 // Send to all individually, so sync messages are sent correctly
1129                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1130                 for (SignalServiceAddress address : recipients) {
1131                     ContactInfo contact = account.getContactStore().getContact(address);
1132                     if (contact != null) {
1133                         messageBuilder.withExpiration(contact.messageExpirationTime);
1134                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1135                     } else {
1136                         messageBuilder.withExpiration(0);
1137                         messageBuilder.withProfileKey(null);
1138                     }
1139                     message = messageBuilder.build();
1140                     if (address.matches(account.getSelfAddress())) {
1141                         results.add(sendSelfMessage(message));
1142                     } else {
1143                         results.add(sendMessage(address, message));
1144                     }
1145                 }
1146                 return results;
1147             }
1148         } finally {
1149             if (message != null && message.isEndSession()) {
1150                 for (SignalServiceAddress recipient : recipients) {
1151                     handleEndSession(recipient);
1152                 }
1153             }
1154             account.save();
1155         }
1156     }
1157
1158     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1159         SignalServiceMessageSender messageSender = getMessageSender();
1160
1161         SignalServiceAddress recipient = account.getSelfAddress();
1162
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         try {
1173             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1174             return SendMessageResult.success(recipient, unidentifiedAccess.isPresent(), false);
1175         } catch (UntrustedIdentityException e) {
1176             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1177             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1178         }
1179     }
1180
1181     private SendMessageResult sendMessage(SignalServiceAddress address, SignalServiceDataMessage message) throws IOException {
1182         SignalServiceMessageSender messageSender = getMessageSender();
1183
1184         try {
1185             return messageSender.sendMessage(address, getAccessFor(address), message);
1186         } catch (UntrustedIdentityException e) {
1187             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1188             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1189         }
1190     }
1191
1192     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1193         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1194         try {
1195             return cipher.decrypt(envelope);
1196         } catch (ProtocolUntrustedIdentityException e) {
1197             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1198                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1199                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1200                 throw identityException;
1201             }
1202             throw new AssertionError(e);
1203         }
1204     }
1205
1206     private void handleEndSession(SignalServiceAddress source) {
1207         account.getSignalProtocolStore().deleteAllSessions(source);
1208     }
1209
1210     private List<HandleAction> handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1211         List<HandleAction> actions = new ArrayList<>();
1212         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1213             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1214             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1215             switch (groupInfo.getType()) {
1216                 case UPDATE:
1217                     if (group == null) {
1218                         group = new GroupInfo(groupInfo.getGroupId());
1219                     }
1220
1221                     if (groupInfo.getAvatar().isPresent()) {
1222                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1223                         if (avatar.isPointer()) {
1224                             try {
1225                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1226                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1227                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1228                             }
1229                         }
1230                     }
1231
1232                     if (groupInfo.getName().isPresent()) {
1233                         group.name = groupInfo.getName().get();
1234                     }
1235
1236                     if (groupInfo.getMembers().isPresent()) {
1237                         group.addMembers(groupInfo.getMembers().get()
1238                                 .stream()
1239                                 .map(this::resolveSignalServiceAddress)
1240                                 .collect(Collectors.toSet()));
1241                     }
1242
1243                     account.getGroupStore().updateGroup(group);
1244                     break;
1245                 case DELIVER:
1246                     if (group == null && !isSync) {
1247                         actions.add(new SendGroupInfoRequestAction(source, groupInfo.getGroupId()));
1248                     }
1249                     break;
1250                 case QUIT:
1251                     if (group != null) {
1252                         group.removeMember(source);
1253                         account.getGroupStore().updateGroup(group);
1254                     }
1255                     break;
1256                 case REQUEST_INFO:
1257                     if (group != null && !isSync) {
1258                         actions.add(new SendGroupUpdateAction(source, group.groupId));
1259                     }
1260                     break;
1261             }
1262         }
1263         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1264         if (message.isEndSession()) {
1265             handleEndSession(conversationPartnerAddress);
1266         }
1267         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1268             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1269                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1270                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1271                 if (group == null) {
1272                     group = new GroupInfo(groupInfo.getGroupId());
1273                 }
1274                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1275                     group.messageExpirationTime = message.getExpiresInSeconds();
1276                     account.getGroupStore().updateGroup(group);
1277                 }
1278             } else {
1279                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1280                 if (contact == null) {
1281                     contact = new ContactInfo(conversationPartnerAddress);
1282                 }
1283                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1284                     contact.messageExpirationTime = message.getExpiresInSeconds();
1285                     account.getContactStore().updateContact(contact);
1286                 }
1287             }
1288         }
1289         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1290             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1291                 if (attachment.isPointer()) {
1292                     try {
1293                         retrieveAttachment(attachment.asPointer());
1294                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1295                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1296                     }
1297                 }
1298             }
1299         }
1300         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1301             if (source.matches(account.getSelfAddress())) {
1302                 try {
1303                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1304                 } catch (InvalidInputException ignored) {
1305                 }
1306                 ContactInfo contact = account.getContactStore().getContact(source);
1307                 if (contact != null) {
1308                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1309                     account.getContactStore().updateContact(contact);
1310                 }
1311             } else {
1312                 ContactInfo contact = account.getContactStore().getContact(source);
1313                 if (contact == null) {
1314                     contact = new ContactInfo(source);
1315                 }
1316                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1317                 account.getContactStore().updateContact(contact);
1318             }
1319         }
1320         if (message.getPreviews().isPresent()) {
1321             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1322             for (SignalServiceDataMessage.Preview preview : previews) {
1323                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1324                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1325                     try {
1326                         retrieveAttachment(attachment);
1327                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1328                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1329                     }
1330                 }
1331             }
1332         }
1333         return actions;
1334     }
1335
1336     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1337         final File cachePath = new File(getMessageCachePath());
1338         if (!cachePath.exists()) {
1339             return;
1340         }
1341         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1342             if (!dir.isDirectory()) {
1343                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1344                 continue;
1345             }
1346
1347             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1348                 if (!fileEntry.isFile()) {
1349                     continue;
1350                 }
1351                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1352             }
1353             // Try to delete directory if empty
1354             dir.delete();
1355         }
1356     }
1357
1358     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1359         SignalServiceEnvelope envelope;
1360         try {
1361             envelope = Utils.loadEnvelope(fileEntry);
1362             if (envelope == null) {
1363                 return;
1364             }
1365         } catch (IOException e) {
1366             e.printStackTrace();
1367             return;
1368         }
1369         SignalServiceContent content = null;
1370         if (!envelope.isReceipt()) {
1371             try {
1372                 content = decryptMessage(envelope);
1373             } catch (Exception e) {
1374                 return;
1375             }
1376             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1377             for (HandleAction action : actions) {
1378                 try {
1379                     action.execute(this);
1380                 } catch (Throwable e) {
1381                     e.printStackTrace();
1382                 }
1383             }
1384         }
1385         account.save();
1386         handler.handleMessage(envelope, content, null);
1387         try {
1388             Files.delete(fileEntry.toPath());
1389         } catch (IOException e) {
1390             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1391         }
1392     }
1393
1394     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1395         retryFailedReceivedMessages(handler, ignoreAttachments);
1396         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1397
1398         Set<HandleAction> queuedActions = null;
1399
1400         if (messagePipe == null) {
1401             messagePipe = messageReceiver.createMessagePipe();
1402         }
1403
1404         boolean hasCaughtUpWithOldMessages = false;
1405
1406         while (true) {
1407             SignalServiceEnvelope envelope;
1408             SignalServiceContent content = null;
1409             Exception exception = null;
1410             final long now = new Date().getTime();
1411             try {
1412                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1413                     // store message on disk, before acknowledging receipt to the server
1414                     try {
1415                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1416                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1417                         Utils.storeEnvelope(envelope1, cacheFile);
1418                     } catch (IOException e) {
1419                         System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1420                     }
1421                 });
1422                 if (result.isPresent()) {
1423                     envelope = result.get();
1424                 } else {
1425                     // Received indicator that server queue is empty
1426                     hasCaughtUpWithOldMessages = true;
1427
1428                     if (queuedActions != null) {
1429                         for (HandleAction action : queuedActions) {
1430                             try {
1431                                 action.execute(this);
1432                             } catch (Throwable e) {
1433                                 e.printStackTrace();
1434                             }
1435                         }
1436                         queuedActions.clear();
1437                         queuedActions = null;
1438                     }
1439
1440                     // Continue to wait another timeout for new messages
1441                     continue;
1442                 }
1443             } catch (TimeoutException e) {
1444                 if (returnOnTimeout)
1445                     return;
1446                 continue;
1447             } catch (InvalidVersionException e) {
1448                 System.err.println("Ignoring error: " + e.getMessage());
1449                 continue;
1450             }
1451             if (envelope.hasSource()) {
1452                 // Store uuid if we don't have it already
1453                 SignalServiceAddress source = envelope.getSourceAddress();
1454                 resolveSignalServiceAddress(source);
1455             }
1456             if (!envelope.isReceipt()) {
1457                 try {
1458                     content = decryptMessage(envelope);
1459                 } catch (Exception e) {
1460                     exception = e;
1461                 }
1462                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1463                 if (hasCaughtUpWithOldMessages) {
1464                     for (HandleAction action : actions) {
1465                         try {
1466                             action.execute(this);
1467                         } catch (Throwable e) {
1468                             e.printStackTrace();
1469                         }
1470                     }
1471                 } else {
1472                     if (queuedActions == null) {
1473                         queuedActions = new HashSet<>();
1474                     }
1475                     queuedActions.addAll(actions);
1476                 }
1477             }
1478             account.save();
1479             if (!isMessageBlocked(envelope, content)) {
1480                 handler.handleMessage(envelope, content, exception);
1481             }
1482             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1483                 File cacheFile = null;
1484                 try {
1485                     cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1486                     Files.delete(cacheFile.toPath());
1487                     // Try to delete directory if empty
1488                     new File(getMessageCachePath()).delete();
1489                 } catch (IOException e) {
1490                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1491                 }
1492             }
1493         }
1494     }
1495
1496     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1497         SignalServiceAddress source;
1498         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1499             source = envelope.getSourceAddress();
1500         } else if (content != null) {
1501             source = content.getSender();
1502         } else {
1503             return false;
1504         }
1505         ContactInfo sourceContact = account.getContactStore().getContact(source);
1506         if (sourceContact != null && sourceContact.blocked) {
1507             return true;
1508         }
1509
1510         if (content != null && content.getDataMessage().isPresent()) {
1511             SignalServiceDataMessage message = content.getDataMessage().get();
1512             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1513                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1514                 GroupInfo group = getGroup(groupInfo.getGroupId());
1515                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1516                     return true;
1517                 }
1518             }
1519         }
1520         return false;
1521     }
1522
1523     private List<HandleAction> handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1524         List<HandleAction> actions = new ArrayList<>();
1525         if (content != null) {
1526             SignalServiceAddress sender;
1527             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1528                 sender = envelope.getSourceAddress();
1529             } else {
1530                 sender = content.getSender();
1531             }
1532             // Store uuid if we don't have it already
1533             resolveSignalServiceAddress(sender);
1534
1535             if (content.getDataMessage().isPresent()) {
1536                 SignalServiceDataMessage message = content.getDataMessage().get();
1537
1538                 if (content.isNeedsReceipt()) {
1539                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1540                 }
1541
1542                 actions.addAll(handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments));
1543             }
1544             if (content.getSyncMessage().isPresent()) {
1545                 account.setMultiDevice(true);
1546                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1547                 if (syncMessage.getSent().isPresent()) {
1548                     SentTranscriptMessage message = syncMessage.getSent().get();
1549                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments));
1550                 }
1551                 if (syncMessage.getRequest().isPresent()) {
1552                     RequestMessage rm = syncMessage.getRequest().get();
1553                     if (rm.isContactsRequest()) {
1554                         actions.add(SendSyncContactsAction.create());
1555                     }
1556                     if (rm.isGroupsRequest()) {
1557                         actions.add(SendSyncGroupsAction.create());
1558                     }
1559                     if (rm.isBlockedListRequest()) {
1560                         actions.add(SendSyncBlockedListAction.create());
1561                     }
1562                     // TODO Handle rm.isConfigurationRequest();
1563                 }
1564                 if (syncMessage.getGroups().isPresent()) {
1565                     File tmpFile = null;
1566                     try {
1567                         tmpFile = IOUtils.createTempFile();
1568                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1569                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1570                             DeviceGroup g;
1571                             while ((g = s.read()) != null) {
1572                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1573                                 if (syncGroup == null) {
1574                                     syncGroup = new GroupInfo(g.getId());
1575                                 }
1576                                 if (g.getName().isPresent()) {
1577                                     syncGroup.name = g.getName().get();
1578                                 }
1579                                 syncGroup.addMembers(g.getMembers()
1580                                         .stream()
1581                                         .map(this::resolveSignalServiceAddress)
1582                                         .collect(Collectors.toSet()));
1583                                 if (!g.isActive()) {
1584                                     syncGroup.removeMember(account.getSelfAddress());
1585                                 } else {
1586                                     // Add ourself to the member set as it's marked as active
1587                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1588                                 }
1589                                 syncGroup.blocked = g.isBlocked();
1590                                 if (g.getColor().isPresent()) {
1591                                     syncGroup.color = g.getColor().get();
1592                                 }
1593
1594                                 if (g.getAvatar().isPresent()) {
1595                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1596                                 }
1597                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1598                                 syncGroup.archived = g.isArchived();
1599                                 account.getGroupStore().updateGroup(syncGroup);
1600                             }
1601                         }
1602                     } catch (Exception e) {
1603                         e.printStackTrace();
1604                     } finally {
1605                         if (tmpFile != null) {
1606                             try {
1607                                 Files.delete(tmpFile.toPath());
1608                             } catch (IOException e) {
1609                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1610                             }
1611                         }
1612                     }
1613                 }
1614                 if (syncMessage.getBlockedList().isPresent()) {
1615                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1616                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1617                         setContactBlocked(resolveSignalServiceAddress(address), true);
1618                     }
1619                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1620                         try {
1621                             setGroupBlocked(groupId, true);
1622                         } catch (GroupNotFoundException e) {
1623                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1624                         }
1625                     }
1626                 }
1627                 if (syncMessage.getContacts().isPresent()) {
1628                     File tmpFile = null;
1629                     try {
1630                         tmpFile = IOUtils.createTempFile();
1631                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1632                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1633                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1634                             if (contactsMessage.isComplete()) {
1635                                 account.getContactStore().clear();
1636                             }
1637                             DeviceContact c;
1638                             while ((c = s.read()) != null) {
1639                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1640                                     account.setProfileKey(c.getProfileKey().get());
1641                                 }
1642                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1643                                 ContactInfo contact = account.getContactStore().getContact(address);
1644                                 if (contact == null) {
1645                                     contact = new ContactInfo(address);
1646                                 }
1647                                 if (c.getName().isPresent()) {
1648                                     contact.name = c.getName().get();
1649                                 }
1650                                 if (c.getColor().isPresent()) {
1651                                     contact.color = c.getColor().get();
1652                                 }
1653                                 if (c.getProfileKey().isPresent()) {
1654                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1655                                 }
1656                                 if (c.getVerified().isPresent()) {
1657                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1658                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1659                                 }
1660                                 if (c.getExpirationTimer().isPresent()) {
1661                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1662                                 }
1663                                 contact.blocked = c.isBlocked();
1664                                 contact.inboxPosition = c.getInboxPosition().orNull();
1665                                 contact.archived = c.isArchived();
1666                                 account.getContactStore().updateContact(contact);
1667
1668                                 if (c.getAvatar().isPresent()) {
1669                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1670                                 }
1671                             }
1672                         }
1673                     } catch (Exception e) {
1674                         e.printStackTrace();
1675                     } finally {
1676                         if (tmpFile != null) {
1677                             try {
1678                                 Files.delete(tmpFile.toPath());
1679                             } catch (IOException e) {
1680                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1681                             }
1682                         }
1683                     }
1684                 }
1685                 if (syncMessage.getVerified().isPresent()) {
1686                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1687                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1688                 }
1689                 if (syncMessage.getConfiguration().isPresent()) {
1690                     // TODO
1691                 }
1692             }
1693         }
1694         return actions;
1695     }
1696
1697     private File getContactAvatarFile(String number) {
1698         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
1699     }
1700
1701     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException, MissingConfigurationException {
1702         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1703         if (attachment.isPointer()) {
1704             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1705             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1706         } else {
1707             SignalServiceAttachmentStream stream = attachment.asStream();
1708             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1709         }
1710     }
1711
1712     private File getGroupAvatarFile(byte[] groupId) {
1713         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1714     }
1715
1716     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException, MissingConfigurationException {
1717         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1718         if (attachment.isPointer()) {
1719             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1720             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1721         } else {
1722             SignalServiceAttachmentStream stream = attachment.asStream();
1723             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1724         }
1725     }
1726
1727     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1728         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
1729     }
1730
1731     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
1732         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
1733         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
1734     }
1735
1736     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException, MissingConfigurationException {
1737         if (storePreview && pointer.getPreview().isPresent()) {
1738             File previewFile = new File(outputFile + ".preview");
1739             try (OutputStream output = new FileOutputStream(previewFile)) {
1740                 byte[] preview = pointer.getPreview().get();
1741                 output.write(preview, 0, preview.length);
1742             } catch (FileNotFoundException e) {
1743                 e.printStackTrace();
1744                 return null;
1745             }
1746         }
1747
1748         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1749
1750         File tmpFile = IOUtils.createTempFile();
1751         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE)) {
1752             try (OutputStream output = new FileOutputStream(outputFile)) {
1753                 byte[] buffer = new byte[4096];
1754                 int read;
1755
1756                 while ((read = input.read(buffer)) != -1) {
1757                     output.write(buffer, 0, read);
1758                 }
1759             } catch (FileNotFoundException e) {
1760                 e.printStackTrace();
1761                 return null;
1762             }
1763         } finally {
1764             try {
1765                 Files.delete(tmpFile.toPath());
1766             } catch (IOException e) {
1767                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1768             }
1769         }
1770         return outputFile;
1771     }
1772
1773     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException, MissingConfigurationException {
1774         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1775         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
1776     }
1777
1778     void sendGroups() throws IOException, UntrustedIdentityException {
1779         File groupsFile = IOUtils.createTempFile();
1780
1781         try {
1782             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1783                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1784                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1785                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1786                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1787                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1788                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1789                 }
1790             }
1791
1792             if (groupsFile.exists() && groupsFile.length() > 0) {
1793                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1794                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1795                             .withStream(groupsFileStream)
1796                             .withContentType("application/octet-stream")
1797                             .withLength(groupsFile.length())
1798                             .build();
1799
1800                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1801                 }
1802             }
1803         } finally {
1804             try {
1805                 Files.delete(groupsFile.toPath());
1806             } catch (IOException e) {
1807                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1808             }
1809         }
1810     }
1811
1812     public void sendContacts() throws IOException, UntrustedIdentityException {
1813         File contactsFile = IOUtils.createTempFile();
1814
1815         try {
1816             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1817                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1818                 for (ContactInfo record : account.getContactStore().getContacts()) {
1819                     VerifiedMessage verifiedMessage = null;
1820                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1821                     if (currentIdentity != null) {
1822                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1823                     }
1824
1825                     ProfileKey profileKey = null;
1826                     try {
1827                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1828                     } catch (InvalidInputException ignored) {
1829                     }
1830                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1831                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1832                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1833                             Optional.of(record.messageExpirationTime),
1834                             Optional.fromNullable(record.inboxPosition), record.archived));
1835                 }
1836
1837                 if (account.getProfileKey() != null) {
1838                     // Send our own profile key as well
1839                     out.write(new DeviceContact(account.getSelfAddress(),
1840                             Optional.absent(), Optional.absent(),
1841                             Optional.absent(), Optional.absent(),
1842                             Optional.of(account.getProfileKey()),
1843                             false, Optional.absent(), Optional.absent(), false));
1844                 }
1845             }
1846
1847             if (contactsFile.exists() && contactsFile.length() > 0) {
1848                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1849                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1850                             .withStream(contactsFileStream)
1851                             .withContentType("application/octet-stream")
1852                             .withLength(contactsFile.length())
1853                             .build();
1854
1855                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1856                 }
1857             }
1858         } finally {
1859             try {
1860                 Files.delete(contactsFile.toPath());
1861             } catch (IOException e) {
1862                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1863             }
1864         }
1865     }
1866
1867     void sendBlockedList() throws IOException, UntrustedIdentityException {
1868         List<SignalServiceAddress> addresses = new ArrayList<>();
1869         for (ContactInfo record : account.getContactStore().getContacts()) {
1870             if (record.blocked) {
1871                 addresses.add(record.getAddress());
1872             }
1873         }
1874         List<byte[]> groupIds = new ArrayList<>();
1875         for (GroupInfo record : account.getGroupStore().getGroups()) {
1876             if (record.blocked) {
1877                 groupIds.add(record.groupId);
1878             }
1879         }
1880         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1881     }
1882
1883     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1884         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1885         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1886     }
1887
1888     public List<ContactInfo> getContacts() {
1889         return account.getContactStore().getContacts();
1890     }
1891
1892     public ContactInfo getContact(String number) {
1893         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1894     }
1895
1896     public GroupInfo getGroup(byte[] groupId) {
1897         return account.getGroupStore().getGroup(groupId);
1898     }
1899
1900     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1901         return account.getSignalProtocolStore().getIdentities();
1902     }
1903
1904     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1905         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1906     }
1907
1908     /**
1909      * Trust this the identity with this fingerprint
1910      *
1911      * @param name        username of the identity
1912      * @param fingerprint Fingerprint
1913      */
1914     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1915         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1916         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1917         if (ids == null) {
1918             return false;
1919         }
1920         for (JsonIdentityKeyStore.Identity id : ids) {
1921             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1922                 continue;
1923             }
1924
1925             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1926             try {
1927                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1928             } catch (IOException | UntrustedIdentityException e) {
1929                 e.printStackTrace();
1930             }
1931             account.save();
1932             return true;
1933         }
1934         return false;
1935     }
1936
1937     /**
1938      * Trust this the identity with this safety number
1939      *
1940      * @param name         username of the identity
1941      * @param safetyNumber Safety number
1942      */
1943     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1944         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1945         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1946         if (ids == null) {
1947             return false;
1948         }
1949         for (JsonIdentityKeyStore.Identity id : ids) {
1950             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1951                 continue;
1952             }
1953
1954             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1955             try {
1956                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1957             } catch (IOException | UntrustedIdentityException e) {
1958                 e.printStackTrace();
1959             }
1960             account.save();
1961             return true;
1962         }
1963         return false;
1964     }
1965
1966     /**
1967      * Trust all keys of this identity without verification
1968      *
1969      * @param name username of the identity
1970      */
1971     public boolean trustIdentityAllKeys(String name) {
1972         SignalServiceAddress address = resolveSignalServiceAddress(name);
1973         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1974         if (ids == null) {
1975             return false;
1976         }
1977         for (JsonIdentityKeyStore.Identity id : ids) {
1978             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1979                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1980                 try {
1981                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1982                 } catch (IOException | UntrustedIdentityException e) {
1983                     e.printStackTrace();
1984                 }
1985             }
1986         }
1987         account.save();
1988         return true;
1989     }
1990
1991     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
1992         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), theirAddress, theirIdentityKey);
1993     }
1994
1995     void saveAccount() {
1996         account.save();
1997     }
1998
1999     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2000         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
2001         return resolveSignalServiceAddress(canonicalizedNumber);
2002     }
2003
2004     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2005         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2006
2007         return resolveSignalServiceAddress(address);
2008     }
2009
2010     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2011         if (address.matches(account.getSelfAddress())) {
2012             return account.getSelfAddress();
2013         }
2014
2015         return account.getRecipientStore().resolveServiceAddress(address);
2016     }
2017
2018     @Override
2019     public void close() throws IOException {
2020         if (messagePipe != null) {
2021             messagePipe.shutdown();
2022             messagePipe = null;
2023         }
2024
2025         if (unidentifiedMessagePipe != null) {
2026             unidentifiedMessagePipe.shutdown();
2027             unidentifiedMessagePipe = null;
2028         }
2029
2030         account.close();
2031     }
2032
2033     public interface ReceiveMessageHandler {
2034
2035         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2036     }
2037 }