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 import static org.asamk.signal.manager.ServiceConfig.capabilities;
 146
 147 public class Manager implements Closeable {
 148
 149     private final SleepTimer timer = new UptimeSleepTimer();
 150     private final SignalServiceConfiguration serviceConfiguration;
 151     private final String userAgent;
 152
 153     private final SignalAccount account;
 154     private final PathConfig pathConfig;
 155     private SignalServiceAccountManager accountManager;
 156     private SignalServiceMessagePipe messagePipe = null;
 157     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 158     private boolean discoverableByPhoneNumber = true;
 159
 160     public Manager(SignalAccount account, PathConfig pathConfig, SignalServiceConfiguration serviceConfiguration, String userAgent) {
 161         this.account = account;
 162         this.pathConfig = pathConfig;
 163         this.serviceConfiguration = serviceConfiguration;
 164         this.userAgent = userAgent;
 165         this.accountManager = createSignalServiceAccountManager();
 166
 167         this.account.setResolver(this::resolveSignalServiceAddress);
 168     }
 169
 170     public String getUsername() {
 171         return account.getUsername();
 172     }
 173
 174     public SignalServiceAddress getSelfAddress() {
 175         return account.getSelfAddress();
 176     }
 177
 178     private SignalServiceAccountManager createSignalServiceAccountManager() {
 179         return new SignalServiceAccountManager(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), userAgent, timer);
 180     }
 181
 182     private IdentityKeyPair getIdentityKeyPair() {
 183         return account.getSignalProtocolStore().getIdentityKeyPair();
 184     }
 185
 186     public int getDeviceId() {
 187         return account.getDeviceId();
 188     }
 189
 190     private String getMessageCachePath() {
 191         return pathConfig.getDataPath() + "/" + account.getUsername() + ".d/msg-cache";
 192     }
 193
 194     private String getMessageCachePath(String sender) {
 195         if (sender == null || sender.isEmpty()) {
 196             return getMessageCachePath();
 197         }
 198
 199         return getMessageCachePath() + "/" + sender.replace("/", "_");
 200     }
 201
 202     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 203         String cachePath = getMessageCachePath(sender);
 204         IOUtils.createPrivateDirectories(cachePath);
 205         return new File(cachePath + "/" + now + "_" + timestamp);
 206     }
 207
 208     public static Manager init(String username, String settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent) throws IOException {
 209         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 210
 211         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 212             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 213             int registrationId = KeyHelper.generateRegistrationId(false);
 214
 215             ProfileKey profileKey = KeyUtils.createProfileKey();
 216             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(), username, identityKey, registrationId, profileKey);
 217             account.save();
 218
 219             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 220         }
 221
 222         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 223
 224         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 225
 226         m.migrateLegacyConfigs();
 227
 228         return m;
 229     }
 230
 231     private void migrateLegacyConfigs() {
 232         // Copy group avatars that were previously stored in the attachments folder
 233         // to the new avatar folder
 234         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 235             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 236                 File avatarFile = getGroupAvatarFile(g.groupId);
 237                 File attachmentFile = getAttachmentFile(new SignalServiceAttachmentRemoteId(g.getAvatarId()));
 238                 if (!avatarFile.exists() && attachmentFile.exists()) {
 239                     try {
 240                         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 241                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 242                     } catch (Exception e) {
 243                         // Ignore
 244                     }
 245                 }
 246             }
 247             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 248             account.save();
 249         }
 250         if (account.getProfileKey() == null) {
 251             // Old config file, creating new profile key
 252             account.setProfileKey(KeyUtils.createProfileKey());
 253             account.save();
 254         }
 255     }
 256
 257     public void checkAccountState() throws IOException {
 258         if (account.isRegistered()) {
 259             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 260                 refreshPreKeys();
 261                 account.save();
 262             }
 263             if (account.getUuid() == null) {
 264                 account.setUuid(accountManager.getOwnUuid());
 265                 account.save();
 266             }
 267         }
 268     }
 269
 270     public boolean isRegistered() {
 271         return account.isRegistered();
 272     }
 273
 274     public void register(boolean voiceVerification) throws IOException {
 275         account.setPassword(KeyUtils.createPassword());
 276
 277         // Resetting UUID, because registering doesn't work otherwise
 278         account.setUuid(null);
 279         accountManager = createSignalServiceAccountManager();
 280
 281         if (voiceVerification) {
 282             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 283         } else {
 284             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 285         }
 286
 287         account.setRegistered(false);
 288         account.save();
 289     }
 290
 291     public void updateAccountAttributes() throws IOException {
 292         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, capabilities, discoverableByPhoneNumber);
 293     }
 294
 295     public void setProfile(String name, File avatar) throws IOException {
 296         try (final StreamDetails streamDetails = avatar == null ? null : Utils.createStreamDetailsFromFile(avatar)) {
 297             accountManager.setVersionedProfile(account.getUuid(), account.getProfileKey(), name, streamDetails);
 298         }
 299     }
 300
 301     public void unregister() throws IOException {
 302         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 303         // If this is the master device, other users can't send messages to this number anymore.
 304         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 305         accountManager.setGcmId(Optional.absent());
 306
 307         account.setRegistered(false);
 308         account.save();
 309     }
 310
 311     public List<DeviceInfo> getLinkedDevices() throws IOException {
 312         List<DeviceInfo> devices = accountManager.getDevices();
 313         account.setMultiDevice(devices.size() > 1);
 314         account.save();
 315         return devices;
 316     }
 317
 318     public void removeLinkedDevices(int deviceId) throws IOException {
 319         accountManager.removeDevice(deviceId);
 320         List<DeviceInfo> devices = accountManager.getDevices();
 321         account.setMultiDevice(devices.size() > 1);
 322         account.save();
 323     }
 324
 325     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 326         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 327
 328         addDevice(info.deviceIdentifier, info.deviceKey);
 329     }
 330
 331     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 332         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 333         String verificationCode = accountManager.getNewDeviceVerificationCode();
 334
 335         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 336         account.setMultiDevice(true);
 337         account.save();
 338     }
 339
 340     private List<PreKeyRecord> generatePreKeys() {
 341         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 342
 343         final int offset = account.getPreKeyIdOffset();
 344         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 345             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 346             ECKeyPair keyPair = Curve.generateKeyPair();
 347             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 348
 349             records.add(record);
 350         }
 351
 352         account.addPreKeys(records);
 353         account.save();
 354
 355         return records;
 356     }
 357
 358     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 359         try {
 360             ECKeyPair keyPair = Curve.generateKeyPair();
 361             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 362             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 363
 364             account.addSignedPreKey(record);
 365             account.save();
 366
 367             return record;
 368         } catch (InvalidKeyException e) {
 369             throw new AssertionError(e);
 370         }
 371     }
 372
 373     public void verifyAccount(String verificationCode, String pin) throws IOException {
 374         verificationCode = verificationCode.replace("-", "");
 375         account.setSignalingKey(KeyUtils.createSignalingKey());
 376         // TODO make unrestricted unidentified access configurable
 377         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, capabilities, discoverableByPhoneNumber);
 378
 379         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 380         // TODO response.isStorageCapable()
 381         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 382         account.setRegistered(true);
 383         account.setUuid(uuid);
 384         account.setRegistrationLockPin(pin);
 385         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 386
 387         refreshPreKeys();
 388         account.save();
 389     }
 390
 391     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 392         if (pin.isPresent()) {
 393             account.setRegistrationLockPin(pin.get());
 394             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 395         } else {
 396             account.setRegistrationLockPin(null);
 397             accountManager.removeRegistrationLockV1();
 398         }
 399         account.save();
 400     }
 401
 402     void refreshPreKeys() throws IOException {
 403         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 404         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 405         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 406
 407         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 408     }
 409
 410     private SignalServiceMessageReceiver getMessageReceiver() {
 411         // TODO implement ZkGroup support
 412         final ClientZkProfileOperations clientZkProfileOperations = null;
 413         return new SignalServiceMessageReceiver(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), userAgent, null, timer, clientZkProfileOperations);
 414     }
 415
 416     private SignalServiceMessageSender getMessageSender() {
 417         // TODO implement ZkGroup support
 418         final ClientZkProfileOperations clientZkProfileOperations = null;
 419         final boolean attachmentsV3 = false;
 420         final ExecutorService executor = null;
 421         return new SignalServiceMessageSender(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 422                 account.getDeviceId(), account.getSignalProtocolStore(), userAgent, account.isMultiDevice(), attachmentsV3, Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent(), clientZkProfileOperations, executor);
 423     }
 424
 425     private SignalServiceProfile getEncryptedRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 426         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 427                 : messagePipe;
 428
 429         if (pipe != null) {
 430             try {
 431                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS).getProfile();
 432             } catch (IOException | InterruptedException | ExecutionException | TimeoutException ignored) {
 433             }
 434         }
 435
 436         SignalServiceMessageReceiver receiver = getMessageReceiver();
 437         try {
 438             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS).getProfile();
 439         } catch (InterruptedException | ExecutionException | TimeoutException e) {
 440             throw new IOException("Failed to retrieve profile", e);
 441         }
 442     }
 443
 444     private SignalProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess, ProfileKey profileKey) throws IOException {
 445         final SignalServiceProfile encryptedProfile = getEncryptedRecipientProfile(address, unidentifiedAccess);
 446
 447         File avatarFile = null;
 448         try {
 449             avatarFile = encryptedProfile.getAvatar() == null ? null : retrieveProfileAvatar(address, encryptedProfile.getAvatar(), profileKey);
 450         } catch (AssertionError e) {
 451             System.err.println("Failed to retrieve profile avatar: " + e.getMessage());
 452         }
 453
 454         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 455         try {
 456             return new SignalProfile(
 457                     encryptedProfile.getIdentityKey(),
 458                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 459                     avatarFile,
 460                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 461                     encryptedProfile.isUnrestrictedUnidentifiedAccess(),
 462                     encryptedProfile.getCapabilities());
 463         } catch (InvalidCiphertextException e) {
 464             return null;
 465         }
 466     }
 467
 468     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 469         File file = getGroupAvatarFile(groupId);
 470         if (!file.exists()) {
 471             return Optional.absent();
 472         }
 473
 474         return Optional.of(Utils.createAttachment(file));
 475     }
 476
 477     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 478         File file = getContactAvatarFile(number);
 479         if (!file.exists()) {
 480             return Optional.absent();
 481         }
 482
 483         return Optional.of(Utils.createAttachment(file));
 484     }
 485
 486     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 487         GroupInfo g = account.getGroupStore().getGroup(groupId);
 488         if (g == null) {
 489             throw new GroupNotFoundException(groupId);
 490         }
 491         if (!g.isMember(account.getSelfAddress())) {
 492             throw new NotAGroupMemberException(groupId, g.name);
 493         }
 494         return g;
 495     }
 496
 497     public List<GroupInfo> getGroups() {
 498         return account.getGroupStore().getGroups();
 499     }
 500
 501     public long sendGroupMessage(String messageText, List<String> attachments,
 502                                  byte[] groupId)
 503             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 504         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 505         if (attachments != null) {
 506             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 507         }
 508         if (groupId != null) {
 509             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 510                     .withId(groupId)
 511                     .build();
 512             messageBuilder.asGroupMessage(group);
 513         }
 514
 515         final GroupInfo g = getGroupForSending(groupId);
 516
 517         messageBuilder.withExpiration(g.messageExpirationTime);
 518
 519         return sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 520     }
 521
 522     public void sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 523                                          long targetSentTimestamp, byte[] groupId)
 524             throws IOException, EncapsulatedExceptions, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 525         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 526         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 527                 .withReaction(reaction);
 528         if (groupId != null) {
 529             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 530                     .withId(groupId)
 531                     .build();
 532             messageBuilder.asGroupMessage(group);
 533         }
 534         final GroupInfo g = getGroupForSending(groupId);
 535         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 536     }
 537
 538     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions, NotAGroupMemberException {
 539         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 540                 .withId(groupId)
 541                 .build();
 542
 543         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 544                 .asGroupMessage(group);
 545
 546         final GroupInfo g = getGroupForSending(groupId);
 547         g.removeMember(account.getSelfAddress());
 548         account.getGroupStore().updateGroup(g);
 549
 550         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 551     }
 552
 553     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 554         GroupInfo g;
 555         if (groupId == null) {
 556             // Create new group
 557             g = new GroupInfo(KeyUtils.createGroupId());
 558             g.addMembers(Collections.singleton(account.getSelfAddress()));
 559         } else {
 560             g = getGroupForSending(groupId);
 561         }
 562
 563         if (name != null) {
 564             g.name = name;
 565         }
 566
 567         if (members != null) {
 568             final Set<String> newE164Members = new HashSet<>();
 569             for (SignalServiceAddress member : members) {
 570                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 571                     continue;
 572                 }
 573                 newE164Members.add(member.getNumber().get());
 574             }
 575
 576             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 577             if (contacts.size() != newE164Members.size()) {
 578                 // Some of the new members are not registered on Signal
 579                 for (ContactTokenDetails contact : contacts) {
 580                     newE164Members.remove(contact.getNumber());
 581                 }
 582                 throw new IOException("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 583             }
 584
 585             g.addMembers(members);
 586         }
 587
 588         if (avatarFile != null) {
 589             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 590             File aFile = getGroupAvatarFile(g.groupId);
 591             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 592         }
 593
 594         account.getGroupStore().updateGroup(g);
 595
 596         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 597
 598         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 599         return g.groupId;
 600     }
 601
 602     void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 603         if (groupId == null) {
 604             return;
 605         }
 606         GroupInfo g = getGroupForSending(groupId);
 607
 608         if (!g.isMember(recipient)) {
 609             return;
 610         }
 611
 612         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 613
 614         // Send group message only to the recipient who requested it
 615         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 616     }
 617
 618     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) throws AttachmentInvalidException {
 619         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 620                 .withId(g.groupId)
 621                 .withName(g.name)
 622                 .withMembers(new ArrayList<>(g.getMembers()));
 623
 624         File aFile = getGroupAvatarFile(g.groupId);
 625         if (aFile.exists()) {
 626             try {
 627                 group.withAvatar(Utils.createAttachment(aFile));
 628             } catch (IOException e) {
 629                 throw new AttachmentInvalidException(aFile.toString(), e);
 630             }
 631         }
 632
 633         return SignalServiceDataMessage.newBuilder()
 634                 .asGroupMessage(group.build())
 635                 .withExpiration(g.messageExpirationTime);
 636     }
 637
 638     void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 639         if (groupId == null) {
 640             return;
 641         }
 642
 643         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 644                 .withId(groupId);
 645
 646         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 647                 .asGroupMessage(group.build());
 648
 649         // Send group info request message to the recipient who sent us a message with this groupId
 650         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 651     }
 652
 653     void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 654         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 655                 Collections.singletonList(messageId),
 656                 System.currentTimeMillis());
 657
 658         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 659     }
 660
 661     public long sendMessage(String messageText, List<String> attachments,
 662                             List<String> recipients)
 663             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 664         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 665         if (attachments != null) {
 666             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 667
 668             // Upload attachments here, so we only upload once even for multiple recipients
 669             SignalServiceMessageSender messageSender = getMessageSender();
 670             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 671             for (SignalServiceAttachment attachment : attachmentStreams) {
 672                 if (attachment.isStream()) {
 673                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 674                 } else if (attachment.isPointer()) {
 675                     attachmentPointers.add(attachment.asPointer());
 676                 }
 677             }
 678
 679             messageBuilder.withAttachments(attachmentPointers);
 680         }
 681         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 682     }
 683
 684     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 685                                     long targetSentTimestamp, List<String> recipients)
 686             throws IOException, EncapsulatedExceptions, InvalidNumberException {
 687         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 688         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 689                 .withReaction(reaction);
 690         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 691     }
 692
 693     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 694         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 695                 .asEndSessionMessage();
 696
 697         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 698         try {
 699             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 700         } catch (Exception e) {
 701             for (SignalServiceAddress address : signalServiceAddresses) {
 702                 handleEndSession(address);
 703             }
 704             account.save();
 705             throw e;
 706         }
 707     }
 708
 709     public String getContactName(String number) throws InvalidNumberException {
 710         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 711         if (contact == null) {
 712             return "";
 713         } else {
 714             return contact.name;
 715         }
 716     }
 717
 718     public void setContactName(String number, String name) throws InvalidNumberException {
 719         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 720         ContactInfo contact = account.getContactStore().getContact(address);
 721         if (contact == null) {
 722             contact = new ContactInfo(address);
 723         }
 724         contact.name = name;
 725         account.getContactStore().updateContact(contact);
 726         account.save();
 727     }
 728
 729     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 730         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 731     }
 732
 733     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 734         ContactInfo contact = account.getContactStore().getContact(address);
 735         if (contact == null) {
 736             contact = new ContactInfo(address);
 737         }
 738         contact.blocked = blocked;
 739         account.getContactStore().updateContact(contact);
 740         account.save();
 741     }
 742
 743     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 744         GroupInfo group = getGroup(groupId);
 745         if (group == null) {
 746             throw new GroupNotFoundException(groupId);
 747         }
 748
 749         group.blocked = blocked;
 750         account.getGroupStore().updateGroup(group);
 751         account.save();
 752     }
 753
 754     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 755         if (groupId.length == 0) {
 756             groupId = null;
 757         }
 758         if (name.isEmpty()) {
 759             name = null;
 760         }
 761         if (members.isEmpty()) {
 762             members = null;
 763         }
 764         if (avatar.isEmpty()) {
 765             avatar = null;
 766         }
 767         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 768     }
 769
 770     /**
 771      * Change the expiration timer for a contact
 772      */
 773     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
 774         ContactInfo contact = account.getContactStore().getContact(address);
 775         contact.messageExpirationTime = messageExpirationTimer;
 776         account.getContactStore().updateContact(contact);
 777         sendExpirationTimerUpdate(address);
 778         account.save();
 779     }
 780
 781     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
 782         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 783                 .asExpirationUpdate();
 784         sendMessage(messageBuilder, Collections.singleton(address));
 785     }
 786
 787     /**
 788      * Change the expiration timer for a contact
 789      */
 790     public void setExpirationTimer(String number, int messageExpirationTimer) throws IOException, InvalidNumberException {
 791         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 792         setExpirationTimer(address, messageExpirationTimer);
 793     }
 794
 795     /**
 796      * Change the expiration timer for a group
 797      */
 798     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 799         GroupInfo g = account.getGroupStore().getGroup(groupId);
 800         g.messageExpirationTime = messageExpirationTimer;
 801         account.getGroupStore().updateGroup(g);
 802     }
 803
 804     /**
 805      * Upload the sticker pack from path.
 806      *
 807      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 808      * @return if successful, returns the URL to install the sticker pack in the signal app
 809      */
 810     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 811         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 812
 813         SignalServiceMessageSender messageSender = getMessageSender();
 814
 815         byte[] packKey = KeyUtils.createStickerUploadKey();
 816         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 817
 818         try {
 819             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 820                     .toString();
 821         } catch (URISyntaxException e) {
 822             throw new AssertionError(e);
 823         }
 824     }
 825
 826     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 827         ZipFile zip = null;
 828         String rootPath = null;
 829
 830         final File file = new File(path);
 831         if (file.getName().endsWith(".zip")) {
 832             zip = new ZipFile(file);
 833         } else if (file.getName().equals("manifest.json")) {
 834             rootPath = file.getParent();
 835         } else {
 836             throw new StickerPackInvalidException("Could not find manifest.json");
 837         }
 838
 839         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 840
 841         if (pack.stickers == null) {
 842             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 843         }
 844
 845         if (pack.stickers.isEmpty()) {
 846             throw new StickerPackInvalidException("Must include stickers.");
 847         }
 848
 849         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 850         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 851             if (sticker.file == null) {
 852                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 853             }
 854
 855             Pair<InputStream, Long> data;
 856             try {
 857                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 858             } catch (IOException ignored) {
 859                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 860             }
 861
 862             String contentType = Utils.getFileMimeType(new File(sticker.file), null);
 863             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""), contentType);
 864             stickers.add(stickerInfo);
 865         }
 866
 867         StickerInfo cover = null;
 868         if (pack.cover != null) {
 869             if (pack.cover.file == null) {
 870                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 871             }
 872
 873             Pair<InputStream, Long> data;
 874             try {
 875                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 876             } catch (IOException ignored) {
 877                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 878             }
 879
 880             String contentType = Utils.getFileMimeType(new File(pack.cover.file), null);
 881             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""), contentType);
 882         }
 883
 884         return new SignalServiceStickerManifestUpload(
 885                 pack.title,
 886                 pack.author,
 887                 cover,
 888                 stickers);
 889     }
 890
 891     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 892         InputStream inputStream;
 893         if (zip != null) {
 894             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 895         } else {
 896             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 897         }
 898         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 899     }
 900
 901     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 902         if (zip != null) {
 903             final ZipEntry entry = zip.getEntry(subfile);
 904             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 905         } else {
 906             final File file = new File(rootPath, subfile);
 907             return new Pair<>(new FileInputStream(file), file.length());
 908         }
 909     }
 910
 911     void requestSyncGroups() throws IOException {
 912         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 913         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 914         try {
 915             sendSyncMessage(message);
 916         } catch (UntrustedIdentityException e) {
 917             e.printStackTrace();
 918         }
 919     }
 920
 921     void requestSyncContacts() throws IOException {
 922         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 923         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 924         try {
 925             sendSyncMessage(message);
 926         } catch (UntrustedIdentityException e) {
 927             e.printStackTrace();
 928         }
 929     }
 930
 931     void requestSyncBlocked() throws IOException {
 932         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 933         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 934         try {
 935             sendSyncMessage(message);
 936         } catch (UntrustedIdentityException e) {
 937             e.printStackTrace();
 938         }
 939     }
 940
 941     void requestSyncConfiguration() throws IOException {
 942         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 943         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 944         try {
 945             sendSyncMessage(message);
 946         } catch (UntrustedIdentityException e) {
 947             e.printStackTrace();
 948         }
 949     }
 950
 951     private byte[] getSenderCertificate() {
 952         // TODO support UUID capable sender certificates
 953         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
 954         byte[] certificate;
 955         try {
 956             certificate = accountManager.getSenderCertificate();
 957         } catch (IOException e) {
 958             System.err.println("Failed to get sender certificate: " + e);
 959             return null;
 960         }
 961         // TODO cache for a day
 962         return certificate;
 963     }
 964
 965     private byte[] getSelfUnidentifiedAccessKey() {
 966         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 967     }
 968
 969     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 970         ContactInfo contact = account.getContactStore().getContact(recipient);
 971         if (contact == null || contact.profileKey == null) {
 972             return null;
 973         }
 974         ProfileKey theirProfileKey;
 975         try {
 976             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
 977         } catch (InvalidInputException | IOException e) {
 978             throw new AssertionError(e);
 979         }
 980         SignalProfile targetProfile;
 981         try {
 982             targetProfile = getRecipientProfile(recipient, Optional.absent(), theirProfileKey);
 983         } catch (IOException e) {
 984             System.err.println("Failed to get recipient profile: " + e);
 985             return null;
 986         }
 987
 988         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
 989             return null;
 990         }
 991
 992         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
 993             return KeyUtils.createUnrestrictedUnidentifiedAccess();
 994         }
 995
 996         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
 997     }
 998
 999     private Optional<UnidentifiedAccessPair> getAccessForSync() {
1000         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1001         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1002
1003         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1004             return Optional.absent();
1005         }
1006
1007         try {
1008             return Optional.of(new UnidentifiedAccessPair(
1009                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1010                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1011             ));
1012         } catch (InvalidCertificateException e) {
1013             return Optional.absent();
1014         }
1015     }
1016
1017     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1018         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1019         for (SignalServiceAddress recipient : recipients) {
1020             result.add(getAccessFor(recipient));
1021         }
1022         return result;
1023     }
1024
1025     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1026         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1027         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1028         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1029
1030         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1031             return Optional.absent();
1032         }
1033
1034         try {
1035             return Optional.of(new UnidentifiedAccessPair(
1036                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1037                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1038             ));
1039         } catch (InvalidCertificateException e) {
1040             return Optional.absent();
1041         }
1042     }
1043
1044     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1045         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1046
1047         if (unidentifiedAccess.isPresent()) {
1048             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1049         }
1050
1051         return Optional.absent();
1052     }
1053
1054     private void sendSyncMessage(SignalServiceSyncMessage message)
1055             throws IOException, UntrustedIdentityException {
1056         SignalServiceMessageSender messageSender = getMessageSender();
1057         try {
1058             messageSender.sendMessage(message, getAccessForSync());
1059         } catch (UntrustedIdentityException e) {
1060             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1061             throw e;
1062         }
1063     }
1064
1065     /**
1066      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1067      */
1068     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1069             throws EncapsulatedExceptions, IOException {
1070         final long timestamp = System.currentTimeMillis();
1071         messageBuilder.withTimestamp(timestamp);
1072         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1073
1074         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1075         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1076         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1077
1078         for (SendMessageResult result : results) {
1079             if (result.isUnregisteredFailure()) {
1080                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1081             } else if (result.isNetworkFailure()) {
1082                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1083             } else if (result.getIdentityFailure() != null) {
1084                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1085             }
1086         }
1087         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1088             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1089         }
1090         return timestamp;
1091     }
1092
1093     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1094         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1095
1096         for (String number : numbers) {
1097             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1098         }
1099         return signalServiceAddresses;
1100     }
1101
1102     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1103             throws IOException {
1104         if (messagePipe == null) {
1105             messagePipe = getMessageReceiver().createMessagePipe();
1106         }
1107         if (unidentifiedMessagePipe == null) {
1108             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1109         }
1110         SignalServiceDataMessage message = null;
1111         try {
1112             message = messageBuilder.build();
1113             if (message.getGroupContext().isPresent()) {
1114                 try {
1115                     SignalServiceMessageSender messageSender = getMessageSender();
1116                     final boolean isRecipientUpdate = false;
1117                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1118                     for (SendMessageResult r : result) {
1119                         if (r.getIdentityFailure() != null) {
1120                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1121                         }
1122                     }
1123                     return result;
1124                 } catch (UntrustedIdentityException e) {
1125                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1126                     return Collections.emptyList();
1127                 }
1128             } else {
1129                 // Send to all individually, so sync messages are sent correctly
1130                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1131                 for (SignalServiceAddress address : recipients) {
1132                     ContactInfo contact = account.getContactStore().getContact(address);
1133                     if (contact != null) {
1134                         messageBuilder.withExpiration(contact.messageExpirationTime);
1135                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1136                     } else {
1137                         messageBuilder.withExpiration(0);
1138                         messageBuilder.withProfileKey(null);
1139                     }
1140                     message = messageBuilder.build();
1141                     if (address.matches(account.getSelfAddress())) {
1142                         results.add(sendSelfMessage(message));
1143                     } else {
1144                         results.add(sendMessage(address, message));
1145                     }
1146                 }
1147                 return results;
1148             }
1149         } finally {
1150             if (message != null && message.isEndSession()) {
1151                 for (SignalServiceAddress recipient : recipients) {
1152                     handleEndSession(recipient);
1153                 }
1154             }
1155             account.save();
1156         }
1157     }
1158
1159     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1160         SignalServiceMessageSender messageSender = getMessageSender();
1161
1162         SignalServiceAddress recipient = account.getSelfAddress();
1163
1164         final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1165         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1166                 message.getTimestamp(),
1167                 message,
1168                 message.getExpiresInSeconds(),
1169                 Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1170                 false);
1171         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1172
1173         try {
1174             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1175             return SendMessageResult.success(recipient, unidentifiedAccess.isPresent(), false);
1176         } catch (UntrustedIdentityException e) {
1177             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1178             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1179         }
1180     }
1181
1182     private SendMessageResult sendMessage(SignalServiceAddress address, SignalServiceDataMessage message) throws IOException {
1183         SignalServiceMessageSender messageSender = getMessageSender();
1184
1185         try {
1186             return messageSender.sendMessage(address, getAccessFor(address), message);
1187         } catch (UntrustedIdentityException e) {
1188             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1189             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1190         }
1191     }
1192
1193     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1194         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1195         try {
1196             return cipher.decrypt(envelope);
1197         } catch (ProtocolUntrustedIdentityException e) {
1198             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1199                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1200                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1201                 throw identityException;
1202             }
1203             throw new AssertionError(e);
1204         }
1205     }
1206
1207     private void handleEndSession(SignalServiceAddress source) {
1208         account.getSignalProtocolStore().deleteAllSessions(source);
1209     }
1210
1211     private List<HandleAction> handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1212         List<HandleAction> actions = new ArrayList<>();
1213         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1214             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1215             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1216             switch (groupInfo.getType()) {
1217                 case UPDATE:
1218                     if (group == null) {
1219                         group = new GroupInfo(groupInfo.getGroupId());
1220                     }
1221
1222                     if (groupInfo.getAvatar().isPresent()) {
1223                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1224                         if (avatar.isPointer()) {
1225                             try {
1226                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1227                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1228                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1229                             }
1230                         }
1231                     }
1232
1233                     if (groupInfo.getName().isPresent()) {
1234                         group.name = groupInfo.getName().get();
1235                     }
1236
1237                     if (groupInfo.getMembers().isPresent()) {
1238                         group.addMembers(groupInfo.getMembers().get()
1239                                 .stream()
1240                                 .map(this::resolveSignalServiceAddress)
1241                                 .collect(Collectors.toSet()));
1242                     }
1243
1244                     account.getGroupStore().updateGroup(group);
1245                     break;
1246                 case DELIVER:
1247                     if (group == null && !isSync) {
1248                         actions.add(new SendGroupInfoRequestAction(source, groupInfo.getGroupId()));
1249                     }
1250                     break;
1251                 case QUIT:
1252                     if (group != null) {
1253                         group.removeMember(source);
1254                         account.getGroupStore().updateGroup(group);
1255                     }
1256                     break;
1257                 case REQUEST_INFO:
1258                     if (group != null && !isSync) {
1259                         actions.add(new SendGroupUpdateAction(source, group.groupId));
1260                     }
1261                     break;
1262             }
1263         }
1264         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1265         if (message.isEndSession()) {
1266             handleEndSession(conversationPartnerAddress);
1267         }
1268         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1269             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1270                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1271                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1272                 if (group == null) {
1273                     group = new GroupInfo(groupInfo.getGroupId());
1274                 }
1275                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1276                     group.messageExpirationTime = message.getExpiresInSeconds();
1277                     account.getGroupStore().updateGroup(group);
1278                 }
1279             } else {
1280                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1281                 if (contact == null) {
1282                     contact = new ContactInfo(conversationPartnerAddress);
1283                 }
1284                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1285                     contact.messageExpirationTime = message.getExpiresInSeconds();
1286                     account.getContactStore().updateContact(contact);
1287                 }
1288             }
1289         }
1290         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1291             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1292                 if (attachment.isPointer()) {
1293                     try {
1294                         retrieveAttachment(attachment.asPointer());
1295                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1296                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1297                     }
1298                 }
1299             }
1300         }
1301         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1302             if (source.matches(account.getSelfAddress())) {
1303                 try {
1304                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1305                 } catch (InvalidInputException ignored) {
1306                 }
1307                 ContactInfo contact = account.getContactStore().getContact(source);
1308                 if (contact != null) {
1309                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1310                     account.getContactStore().updateContact(contact);
1311                 }
1312             } else {
1313                 ContactInfo contact = account.getContactStore().getContact(source);
1314                 if (contact == null) {
1315                     contact = new ContactInfo(source);
1316                 }
1317                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1318                 account.getContactStore().updateContact(contact);
1319             }
1320         }
1321         if (message.getPreviews().isPresent()) {
1322             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1323             for (SignalServiceDataMessage.Preview preview : previews) {
1324                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1325                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1326                     try {
1327                         retrieveAttachment(attachment);
1328                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1329                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1330                     }
1331                 }
1332             }
1333         }
1334         return actions;
1335     }
1336
1337     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1338         final File cachePath = new File(getMessageCachePath());
1339         if (!cachePath.exists()) {
1340             return;
1341         }
1342         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1343             if (!dir.isDirectory()) {
1344                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1345                 continue;
1346             }
1347
1348             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1349                 if (!fileEntry.isFile()) {
1350                     continue;
1351                 }
1352                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1353             }
1354             // Try to delete directory if empty
1355             dir.delete();
1356         }
1357     }
1358
1359     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1360         SignalServiceEnvelope envelope;
1361         try {
1362             envelope = Utils.loadEnvelope(fileEntry);
1363             if (envelope == null) {
1364                 return;
1365             }
1366         } catch (IOException e) {
1367             e.printStackTrace();
1368             return;
1369         }
1370         SignalServiceContent content = null;
1371         if (!envelope.isReceipt()) {
1372             try {
1373                 content = decryptMessage(envelope);
1374             } catch (Exception e) {
1375                 return;
1376             }
1377             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1378             for (HandleAction action : actions) {
1379                 try {
1380                     action.execute(this);
1381                 } catch (Throwable e) {
1382                     e.printStackTrace();
1383                 }
1384             }
1385         }
1386         account.save();
1387         handler.handleMessage(envelope, content, null);
1388         try {
1389             Files.delete(fileEntry.toPath());
1390         } catch (IOException e) {
1391             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1392         }
1393     }
1394
1395     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1396         retryFailedReceivedMessages(handler, ignoreAttachments);
1397         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1398
1399         Set<HandleAction> queuedActions = null;
1400
1401         if (messagePipe == null) {
1402             messagePipe = messageReceiver.createMessagePipe();
1403         }
1404
1405         boolean hasCaughtUpWithOldMessages = false;
1406
1407         while (true) {
1408             SignalServiceEnvelope envelope;
1409             SignalServiceContent content = null;
1410             Exception exception = null;
1411             final long now = new Date().getTime();
1412             try {
1413                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1414                     // store message on disk, before acknowledging receipt to the server
1415                     try {
1416                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1417                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1418                         Utils.storeEnvelope(envelope1, cacheFile);
1419                     } catch (IOException e) {
1420                         System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1421                     }
1422                 });
1423                 if (result.isPresent()) {
1424                     envelope = result.get();
1425                 } else {
1426                     // Received indicator that server queue is empty
1427                     hasCaughtUpWithOldMessages = true;
1428
1429                     if (queuedActions != null) {
1430                         for (HandleAction action : queuedActions) {
1431                             try {
1432                                 action.execute(this);
1433                             } catch (Throwable e) {
1434                                 e.printStackTrace();
1435                             }
1436                         }
1437                         queuedActions.clear();
1438                         queuedActions = null;
1439                     }
1440
1441                     // Continue to wait another timeout for new messages
1442                     continue;
1443                 }
1444             } catch (TimeoutException e) {
1445                 if (returnOnTimeout)
1446                     return;
1447                 continue;
1448             } catch (InvalidVersionException e) {
1449                 System.err.println("Ignoring error: " + e.getMessage());
1450                 continue;
1451             }
1452             if (envelope.hasSource()) {
1453                 // Store uuid if we don't have it already
1454                 SignalServiceAddress source = envelope.getSourceAddress();
1455                 resolveSignalServiceAddress(source);
1456             }
1457             if (!envelope.isReceipt()) {
1458                 try {
1459                     content = decryptMessage(envelope);
1460                 } catch (Exception e) {
1461                     exception = e;
1462                 }
1463                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1464                 if (hasCaughtUpWithOldMessages) {
1465                     for (HandleAction action : actions) {
1466                         try {
1467                             action.execute(this);
1468                         } catch (Throwable e) {
1469                             e.printStackTrace();
1470                         }
1471                     }
1472                 } else {
1473                     if (queuedActions == null) {
1474                         queuedActions = new HashSet<>();
1475                     }
1476                     queuedActions.addAll(actions);
1477                 }
1478             }
1479             account.save();
1480             if (!isMessageBlocked(envelope, content)) {
1481                 handler.handleMessage(envelope, content, exception);
1482             }
1483             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1484                 File cacheFile = null;
1485                 try {
1486                     cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1487                     Files.delete(cacheFile.toPath());
1488                     // Try to delete directory if empty
1489                     new File(getMessageCachePath()).delete();
1490                 } catch (IOException e) {
1491                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1492                 }
1493             }
1494         }
1495     }
1496
1497     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1498         SignalServiceAddress source;
1499         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1500             source = envelope.getSourceAddress();
1501         } else if (content != null) {
1502             source = content.getSender();
1503         } else {
1504             return false;
1505         }
1506         ContactInfo sourceContact = account.getContactStore().getContact(source);
1507         if (sourceContact != null && sourceContact.blocked) {
1508             return true;
1509         }
1510
1511         if (content != null && content.getDataMessage().isPresent()) {
1512             SignalServiceDataMessage message = content.getDataMessage().get();
1513             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1514                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1515                 GroupInfo group = getGroup(groupInfo.getGroupId());
1516                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1517                     return true;
1518                 }
1519             }
1520         }
1521         return false;
1522     }
1523
1524     private List<HandleAction> handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1525         List<HandleAction> actions = new ArrayList<>();
1526         if (content != null) {
1527             SignalServiceAddress sender;
1528             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1529                 sender = envelope.getSourceAddress();
1530             } else {
1531                 sender = content.getSender();
1532             }
1533             // Store uuid if we don't have it already
1534             resolveSignalServiceAddress(sender);
1535
1536             if (content.getDataMessage().isPresent()) {
1537                 SignalServiceDataMessage message = content.getDataMessage().get();
1538
1539                 if (content.isNeedsReceipt()) {
1540                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1541                 }
1542
1543                 actions.addAll(handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments));
1544             }
1545             if (content.getSyncMessage().isPresent()) {
1546                 account.setMultiDevice(true);
1547                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1548                 if (syncMessage.getSent().isPresent()) {
1549                     SentTranscriptMessage message = syncMessage.getSent().get();
1550                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments));
1551                 }
1552                 if (syncMessage.getRequest().isPresent()) {
1553                     RequestMessage rm = syncMessage.getRequest().get();
1554                     if (rm.isContactsRequest()) {
1555                         actions.add(SendSyncContactsAction.create());
1556                     }
1557                     if (rm.isGroupsRequest()) {
1558                         actions.add(SendSyncGroupsAction.create());
1559                     }
1560                     if (rm.isBlockedListRequest()) {
1561                         actions.add(SendSyncBlockedListAction.create());
1562                     }
1563                     // TODO Handle rm.isConfigurationRequest();
1564                 }
1565                 if (syncMessage.getGroups().isPresent()) {
1566                     File tmpFile = null;
1567                     try {
1568                         tmpFile = IOUtils.createTempFile();
1569                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1570                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1571                             DeviceGroup g;
1572                             while ((g = s.read()) != null) {
1573                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1574                                 if (syncGroup == null) {
1575                                     syncGroup = new GroupInfo(g.getId());
1576                                 }
1577                                 if (g.getName().isPresent()) {
1578                                     syncGroup.name = g.getName().get();
1579                                 }
1580                                 syncGroup.addMembers(g.getMembers()
1581                                         .stream()
1582                                         .map(this::resolveSignalServiceAddress)
1583                                         .collect(Collectors.toSet()));
1584                                 if (!g.isActive()) {
1585                                     syncGroup.removeMember(account.getSelfAddress());
1586                                 } else {
1587                                     // Add ourself to the member set as it's marked as active
1588                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1589                                 }
1590                                 syncGroup.blocked = g.isBlocked();
1591                                 if (g.getColor().isPresent()) {
1592                                     syncGroup.color = g.getColor().get();
1593                                 }
1594
1595                                 if (g.getAvatar().isPresent()) {
1596                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1597                                 }
1598                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1599                                 syncGroup.archived = g.isArchived();
1600                                 account.getGroupStore().updateGroup(syncGroup);
1601                             }
1602                         }
1603                     } catch (Exception e) {
1604                         e.printStackTrace();
1605                     } finally {
1606                         if (tmpFile != null) {
1607                             try {
1608                                 Files.delete(tmpFile.toPath());
1609                             } catch (IOException e) {
1610                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1611                             }
1612                         }
1613                     }
1614                 }
1615                 if (syncMessage.getBlockedList().isPresent()) {
1616                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1617                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1618                         setContactBlocked(resolveSignalServiceAddress(address), true);
1619                     }
1620                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1621                         try {
1622                             setGroupBlocked(groupId, true);
1623                         } catch (GroupNotFoundException e) {
1624                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1625                         }
1626                     }
1627                 }
1628                 if (syncMessage.getContacts().isPresent()) {
1629                     File tmpFile = null;
1630                     try {
1631                         tmpFile = IOUtils.createTempFile();
1632                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1633                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1634                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1635                             if (contactsMessage.isComplete()) {
1636                                 account.getContactStore().clear();
1637                             }
1638                             DeviceContact c;
1639                             while ((c = s.read()) != null) {
1640                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1641                                     account.setProfileKey(c.getProfileKey().get());
1642                                 }
1643                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1644                                 ContactInfo contact = account.getContactStore().getContact(address);
1645                                 if (contact == null) {
1646                                     contact = new ContactInfo(address);
1647                                 }
1648                                 if (c.getName().isPresent()) {
1649                                     contact.name = c.getName().get();
1650                                 }
1651                                 if (c.getColor().isPresent()) {
1652                                     contact.color = c.getColor().get();
1653                                 }
1654                                 if (c.getProfileKey().isPresent()) {
1655                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1656                                 }
1657                                 if (c.getVerified().isPresent()) {
1658                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1659                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1660                                 }
1661                                 if (c.getExpirationTimer().isPresent()) {
1662                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1663                                 }
1664                                 contact.blocked = c.isBlocked();
1665                                 contact.inboxPosition = c.getInboxPosition().orNull();
1666                                 contact.archived = c.isArchived();
1667                                 account.getContactStore().updateContact(contact);
1668
1669                                 if (c.getAvatar().isPresent()) {
1670                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1671                                 }
1672                             }
1673                         }
1674                     } catch (Exception e) {
1675                         e.printStackTrace();
1676                     } finally {
1677                         if (tmpFile != null) {
1678                             try {
1679                                 Files.delete(tmpFile.toPath());
1680                             } catch (IOException e) {
1681                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1682                             }
1683                         }
1684                     }
1685                 }
1686                 if (syncMessage.getVerified().isPresent()) {
1687                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1688                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1689                 }
1690                 if (syncMessage.getConfiguration().isPresent()) {
1691                     // TODO
1692                 }
1693             }
1694         }
1695         return actions;
1696     }
1697
1698     private File getContactAvatarFile(String number) {
1699         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
1700     }
1701
1702     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException, MissingConfigurationException {
1703         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1704         if (attachment.isPointer()) {
1705             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1706             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1707         } else {
1708             SignalServiceAttachmentStream stream = attachment.asStream();
1709             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1710         }
1711     }
1712
1713     private File getGroupAvatarFile(byte[] groupId) {
1714         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1715     }
1716
1717     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException, MissingConfigurationException {
1718         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1719         if (attachment.isPointer()) {
1720             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1721             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1722         } else {
1723             SignalServiceAttachmentStream stream = attachment.asStream();
1724             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1725         }
1726     }
1727
1728     private File getProfileAvatarFile(SignalServiceAddress address) {
1729         return new File(pathConfig.getAvatarsPath(), "profile-" + address.getLegacyIdentifier());
1730     }
1731
1732     private File retrieveProfileAvatar(SignalServiceAddress address, String avatarPath, ProfileKey profileKey) throws IOException {
1733         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1734         SignalServiceMessageReceiver receiver = getMessageReceiver();
1735         File outputFile = getProfileAvatarFile(address);
1736
1737         File tmpFile = IOUtils.createTempFile();
1738         try (InputStream input = receiver.retrieveProfileAvatar(avatarPath, tmpFile, profileKey, ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
1739             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
1740             IOUtils.copyStreamToFile(input, outputFile, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
1741         } finally {
1742             try {
1743                 Files.delete(tmpFile.toPath());
1744             } catch (IOException e) {
1745                 System.err.println("Failed to delete received avatar temp file “" + tmpFile + "”: " + e.getMessage());
1746             }
1747         }
1748         return outputFile;
1749     }
1750
1751     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1752         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
1753     }
1754
1755     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
1756         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
1757         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
1758     }
1759
1760     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException, MissingConfigurationException {
1761         if (storePreview && pointer.getPreview().isPresent()) {
1762             File previewFile = new File(outputFile + ".preview");
1763             try (OutputStream output = new FileOutputStream(previewFile)) {
1764                 byte[] preview = pointer.getPreview().get();
1765                 output.write(preview, 0, preview.length);
1766             } catch (FileNotFoundException e) {
1767                 e.printStackTrace();
1768                 return null;
1769             }
1770         }
1771
1772         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1773
1774         File tmpFile = IOUtils.createTempFile();
1775         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE)) {
1776             IOUtils.copyStreamToFile(input, outputFile);
1777         } finally {
1778             try {
1779                 Files.delete(tmpFile.toPath());
1780             } catch (IOException e) {
1781                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1782             }
1783         }
1784         return outputFile;
1785     }
1786
1787     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException, MissingConfigurationException {
1788         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1789         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
1790     }
1791
1792     void sendGroups() throws IOException, UntrustedIdentityException {
1793         File groupsFile = IOUtils.createTempFile();
1794
1795         try {
1796             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1797                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1798                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1799                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1800                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1801                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1802                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1803                 }
1804             }
1805
1806             if (groupsFile.exists() && groupsFile.length() > 0) {
1807                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1808                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1809                             .withStream(groupsFileStream)
1810                             .withContentType("application/octet-stream")
1811                             .withLength(groupsFile.length())
1812                             .build();
1813
1814                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1815                 }
1816             }
1817         } finally {
1818             try {
1819                 Files.delete(groupsFile.toPath());
1820             } catch (IOException e) {
1821                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1822             }
1823         }
1824     }
1825
1826     public void sendContacts() throws IOException, UntrustedIdentityException {
1827         File contactsFile = IOUtils.createTempFile();
1828
1829         try {
1830             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1831                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1832                 for (ContactInfo record : account.getContactStore().getContacts()) {
1833                     VerifiedMessage verifiedMessage = null;
1834                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1835                     if (currentIdentity != null) {
1836                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1837                     }
1838
1839                     ProfileKey profileKey = null;
1840                     try {
1841                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1842                     } catch (InvalidInputException ignored) {
1843                     }
1844                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1845                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1846                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1847                             Optional.of(record.messageExpirationTime),
1848                             Optional.fromNullable(record.inboxPosition), record.archived));
1849                 }
1850
1851                 if (account.getProfileKey() != null) {
1852                     // Send our own profile key as well
1853                     out.write(new DeviceContact(account.getSelfAddress(),
1854                             Optional.absent(), Optional.absent(),
1855                             Optional.absent(), Optional.absent(),
1856                             Optional.of(account.getProfileKey()),
1857                             false, Optional.absent(), Optional.absent(), false));
1858                 }
1859             }
1860
1861             if (contactsFile.exists() && contactsFile.length() > 0) {
1862                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1863                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1864                             .withStream(contactsFileStream)
1865                             .withContentType("application/octet-stream")
1866                             .withLength(contactsFile.length())
1867                             .build();
1868
1869                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1870                 }
1871             }
1872         } finally {
1873             try {
1874                 Files.delete(contactsFile.toPath());
1875             } catch (IOException e) {
1876                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1877             }
1878         }
1879     }
1880
1881     void sendBlockedList() throws IOException, UntrustedIdentityException {
1882         List<SignalServiceAddress> addresses = new ArrayList<>();
1883         for (ContactInfo record : account.getContactStore().getContacts()) {
1884             if (record.blocked) {
1885                 addresses.add(record.getAddress());
1886             }
1887         }
1888         List<byte[]> groupIds = new ArrayList<>();
1889         for (GroupInfo record : account.getGroupStore().getGroups()) {
1890             if (record.blocked) {
1891                 groupIds.add(record.groupId);
1892             }
1893         }
1894         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1895     }
1896
1897     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1898         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1899         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1900     }
1901
1902     public List<ContactInfo> getContacts() {
1903         return account.getContactStore().getContacts();
1904     }
1905
1906     public ContactInfo getContact(String number) {
1907         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1908     }
1909
1910     public GroupInfo getGroup(byte[] groupId) {
1911         return account.getGroupStore().getGroup(groupId);
1912     }
1913
1914     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1915         return account.getSignalProtocolStore().getIdentities();
1916     }
1917
1918     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1919         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1920     }
1921
1922     /**
1923      * Trust this the identity with this fingerprint
1924      *
1925      * @param name        username of the identity
1926      * @param fingerprint Fingerprint
1927      */
1928     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1929         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1930         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1931         if (ids == null) {
1932             return false;
1933         }
1934         for (JsonIdentityKeyStore.Identity id : ids) {
1935             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1936                 continue;
1937             }
1938
1939             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1940             try {
1941                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1942             } catch (IOException | UntrustedIdentityException e) {
1943                 e.printStackTrace();
1944             }
1945             account.save();
1946             return true;
1947         }
1948         return false;
1949     }
1950
1951     /**
1952      * Trust this the identity with this safety number
1953      *
1954      * @param name         username of the identity
1955      * @param safetyNumber Safety number
1956      */
1957     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1958         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1959         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1960         if (ids == null) {
1961             return false;
1962         }
1963         for (JsonIdentityKeyStore.Identity id : ids) {
1964             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1965                 continue;
1966             }
1967
1968             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1969             try {
1970                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1971             } catch (IOException | UntrustedIdentityException e) {
1972                 e.printStackTrace();
1973             }
1974             account.save();
1975             return true;
1976         }
1977         return false;
1978     }
1979
1980     /**
1981      * Trust all keys of this identity without verification
1982      *
1983      * @param name username of the identity
1984      */
1985     public boolean trustIdentityAllKeys(String name) {
1986         SignalServiceAddress address = resolveSignalServiceAddress(name);
1987         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1988         if (ids == null) {
1989             return false;
1990         }
1991         for (JsonIdentityKeyStore.Identity id : ids) {
1992             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1993                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1994                 try {
1995                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1996                 } catch (IOException | UntrustedIdentityException e) {
1997                     e.printStackTrace();
1998                 }
1999             }
2000         }
2001         account.save();
2002         return true;
2003     }
2004
2005     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
2006         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), theirAddress, theirIdentityKey);
2007     }
2008
2009     void saveAccount() {
2010         account.save();
2011     }
2012
2013     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2014         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
2015         return resolveSignalServiceAddress(canonicalizedNumber);
2016     }
2017
2018     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2019         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2020
2021         return resolveSignalServiceAddress(address);
2022     }
2023
2024     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2025         if (address.matches(account.getSelfAddress())) {
2026             return account.getSelfAddress();
2027         }
2028
2029         return account.getRecipientStore().resolveServiceAddress(address);
2030     }
2031
2032     @Override
2033     public void close() throws IOException {
2034         if (messagePipe != null) {
2035             messagePipe.shutdown();
2036             messagePipe = null;
2037         }
2038
2039         if (unidentifiedMessagePipe != null) {
2040             unidentifiedMessagePipe.shutdown();
2041             unidentifiedMessagePipe = null;
2042         }
2043
2044         account.close();
2045     }
2046
2047     public interface ReceiveMessageHandler {
2048
2049         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2050     }
2051 }