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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.signal.storage.SignalAccount;
  22 import org.asamk.signal.storage.contacts.ContactInfo;
  23 import org.asamk.signal.storage.groups.GroupInfo;
  24 import org.asamk.signal.storage.groups.JsonGroupStore;
  25 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  26 import org.asamk.signal.util.IOUtils;
  27 import org.asamk.signal.util.Util;
  28 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  29 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  30 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  31 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  32 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  33 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  34 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  35 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  36 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  37 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  38 import org.signal.libsignal.metadata.SelfSendException;
  39 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  40 import org.signal.zkgroup.InvalidInputException;
  41 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  42 import org.signal.zkgroup.profiles.ProfileKey;
  43 import org.whispersystems.libsignal.IdentityKey;
  44 import org.whispersystems.libsignal.IdentityKeyPair;
  45 import org.whispersystems.libsignal.InvalidKeyException;
  46 import org.whispersystems.libsignal.InvalidMessageException;
  47 import org.whispersystems.libsignal.InvalidVersionException;
  48 import org.whispersystems.libsignal.ecc.Curve;
  49 import org.whispersystems.libsignal.ecc.ECKeyPair;
  50 import org.whispersystems.libsignal.ecc.ECPublicKey;
  51 import org.whispersystems.libsignal.state.PreKeyRecord;
  52 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  53 import org.whispersystems.libsignal.util.KeyHelper;
  54 import org.whispersystems.libsignal.util.Medium;
  55 import org.whispersystems.libsignal.util.Pair;
  56 import org.whispersystems.libsignal.util.guava.Optional;
  57 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  58 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  59 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  60 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  61 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  62 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  63 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  64 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  65 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  66 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  67 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  68 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  69 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  70 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  71 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  72 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  73 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  74 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  79 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  80 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  81 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  82 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  83 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  84 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  85 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  86 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  87 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  88 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  89 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  90 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  91 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  92 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
  93 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  94 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  95 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  96 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
  97 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  98 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  99 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 100 import org.whispersystems.signalservice.api.util.SleepTimer;
 101 import org.whispersystems.signalservice.api.util.StreamDetails;
 102 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 103 import org.whispersystems.signalservice.api.util.UuidUtil;
 104 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 105 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 106 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 107 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 108 import org.whispersystems.signalservice.internal.util.Hex;
 109 import org.whispersystems.util.Base64;
 110
 111 import java.io.Closeable;
 112 import java.io.File;
 113 import java.io.FileInputStream;
 114 import java.io.FileNotFoundException;
 115 import java.io.FileOutputStream;
 116 import java.io.IOException;
 117 import java.io.InputStream;
 118 import java.io.OutputStream;
 119 import java.net.URI;
 120 import java.net.URISyntaxException;
 121 import java.net.URLEncoder;
 122 import java.nio.file.Files;
 123 import java.nio.file.Paths;
 124 import java.nio.file.StandardCopyOption;
 125 import java.util.ArrayList;
 126 import java.util.Arrays;
 127 import java.util.Collection;
 128 import java.util.Collections;
 129 import java.util.Date;
 130 import java.util.HashSet;
 131 import java.util.LinkedList;
 132 import java.util.List;
 133 import java.util.Locale;
 134 import java.util.Objects;
 135 import java.util.Set;
 136 import java.util.UUID;
 137 import java.util.concurrent.ExecutionException;
 138 import java.util.concurrent.ExecutorService;
 139 import java.util.concurrent.TimeUnit;
 140 import java.util.concurrent.TimeoutException;
 141 import java.util.stream.Collectors;
 142 import java.util.zip.ZipEntry;
 143 import java.util.zip.ZipFile;
 144
 145 public class Manager implements Closeable {
 146
 147     private final SleepTimer timer = new UptimeSleepTimer();
 148     private final SignalServiceConfiguration serviceConfiguration;
 149     private final String userAgent;
 150
 151     private final SignalAccount account;
 152     private final PathConfig pathConfig;
 153     private SignalServiceAccountManager accountManager;
 154     private SignalServiceMessagePipe messagePipe = null;
 155     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 156     private boolean discoverableByPhoneNumber = true;
 157
 158     public Manager(SignalAccount account, PathConfig pathConfig, SignalServiceConfiguration serviceConfiguration, String userAgent) {
 159         this.account = account;
 160         this.pathConfig = pathConfig;
 161         this.serviceConfiguration = serviceConfiguration;
 162         this.userAgent = userAgent;
 163         this.accountManager = createSignalServiceAccountManager();
 164
 165         this.account.setResolver(this::resolveSignalServiceAddress);
 166     }
 167
 168     public String getUsername() {
 169         return account.getUsername();
 170     }
 171
 172     public SignalServiceAddress getSelfAddress() {
 173         return account.getSelfAddress();
 174     }
 175
 176     private SignalServiceAccountManager createSignalServiceAccountManager() {
 177         return new SignalServiceAccountManager(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), userAgent, timer);
 178     }
 179
 180     private IdentityKeyPair getIdentityKeyPair() {
 181         return account.getSignalProtocolStore().getIdentityKeyPair();
 182     }
 183
 184     public int getDeviceId() {
 185         return account.getDeviceId();
 186     }
 187
 188     private String getMessageCachePath() {
 189         return pathConfig.getDataPath() + "/" + account.getUsername() + ".d/msg-cache";
 190     }
 191
 192     private String getMessageCachePath(String sender) {
 193         if (sender == null || sender.isEmpty()) {
 194             return getMessageCachePath();
 195         }
 196
 197         return getMessageCachePath() + "/" + sender.replace("/", "_");
 198     }
 199
 200     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 201         String cachePath = getMessageCachePath(sender);
 202         IOUtils.createPrivateDirectories(cachePath);
 203         return new File(cachePath + "/" + now + "_" + timestamp);
 204     }
 205
 206     public static Manager init(String username, String settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent) throws IOException {
 207         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 208
 209         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 210             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 211             int registrationId = KeyHelper.generateRegistrationId(false);
 212
 213             ProfileKey profileKey = KeyUtils.createProfileKey();
 214             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(), username, identityKey, registrationId, profileKey);
 215             account.save();
 216
 217             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 218         }
 219
 220         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 221
 222         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 223
 224         m.migrateLegacyConfigs();
 225
 226         return m;
 227     }
 228
 229     private void migrateLegacyConfigs() {
 230         // Copy group avatars that were previously stored in the attachments folder
 231         // to the new avatar folder
 232         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 233             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 234                 File avatarFile = getGroupAvatarFile(g.groupId);
 235                 File attachmentFile = getAttachmentFile(new SignalServiceAttachmentRemoteId(g.getAvatarId()));
 236                 if (!avatarFile.exists() && attachmentFile.exists()) {
 237                     try {
 238                         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 239                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 240                     } catch (Exception e) {
 241                         // Ignore
 242                     }
 243                 }
 244             }
 245             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 246             account.save();
 247         }
 248         if (account.getProfileKey() == null) {
 249             // Old config file, creating new profile key
 250             account.setProfileKey(KeyUtils.createProfileKey());
 251             account.save();
 252         }
 253     }
 254
 255     public void checkAccountState() throws IOException {
 256         if (account.isRegistered()) {
 257             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 258                 refreshPreKeys();
 259                 account.save();
 260             }
 261             if (account.getUuid() == null) {
 262                 account.setUuid(accountManager.getOwnUuid());
 263                 account.save();
 264             }
 265         }
 266     }
 267
 268     public boolean isRegistered() {
 269         return account.isRegistered();
 270     }
 271
 272     public void register(boolean voiceVerification) throws IOException {
 273         account.setPassword(KeyUtils.createPassword());
 274
 275         // Resetting UUID, because registering doesn't work otherwise
 276         account.setUuid(null);
 277         accountManager = createSignalServiceAccountManager();
 278
 279         if (voiceVerification) {
 280             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 281         } else {
 282             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 283         }
 284
 285         account.setRegistered(false);
 286         account.save();
 287     }
 288
 289     public void updateAccountAttributes() throws IOException {
 290         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities, discoverableByPhoneNumber);
 291     }
 292
 293     public void setProfile(String name, File avatar) throws IOException {
 294         try (final StreamDetails streamDetails = avatar == null ? null : Utils.createStreamDetailsFromFile(avatar)) {
 295             accountManager.setVersionedProfile(account.getUuid(), account.getProfileKey(), name, streamDetails);
 296         }
 297     }
 298
 299     public void unregister() throws IOException {
 300         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 301         // If this is the master device, other users can't send messages to this number anymore.
 302         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 303         accountManager.setGcmId(Optional.absent());
 304
 305         account.setRegistered(false);
 306         account.save();
 307     }
 308
 309     public List<DeviceInfo> getLinkedDevices() throws IOException {
 310         List<DeviceInfo> devices = accountManager.getDevices();
 311         account.setMultiDevice(devices.size() > 1);
 312         account.save();
 313         return devices;
 314     }
 315
 316     public void removeLinkedDevices(int deviceId) throws IOException {
 317         accountManager.removeDevice(deviceId);
 318         List<DeviceInfo> devices = accountManager.getDevices();
 319         account.setMultiDevice(devices.size() > 1);
 320         account.save();
 321     }
 322
 323     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 324         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 325
 326         addDevice(info.deviceIdentifier, info.deviceKey);
 327     }
 328
 329     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 330         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 331         String verificationCode = accountManager.getNewDeviceVerificationCode();
 332
 333         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 334         account.setMultiDevice(true);
 335         account.save();
 336     }
 337
 338     private List<PreKeyRecord> generatePreKeys() {
 339         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 340
 341         final int offset = account.getPreKeyIdOffset();
 342         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 343             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 344             ECKeyPair keyPair = Curve.generateKeyPair();
 345             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 346
 347             records.add(record);
 348         }
 349
 350         account.addPreKeys(records);
 351         account.save();
 352
 353         return records;
 354     }
 355
 356     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 357         try {
 358             ECKeyPair keyPair = Curve.generateKeyPair();
 359             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 360             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 361
 362             account.addSignedPreKey(record);
 363             account.save();
 364
 365             return record;
 366         } catch (InvalidKeyException e) {
 367             throw new AssertionError(e);
 368         }
 369     }
 370
 371     public void verifyAccount(String verificationCode, String pin) throws IOException {
 372         verificationCode = verificationCode.replace("-", "");
 373         account.setSignalingKey(KeyUtils.createSignalingKey());
 374         // TODO make unrestricted unidentified access configurable
 375         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities, discoverableByPhoneNumber);
 376
 377         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 378         // TODO response.isStorageCapable()
 379         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 380         account.setRegistered(true);
 381         account.setUuid(uuid);
 382         account.setRegistrationLockPin(pin);
 383         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 384
 385         refreshPreKeys();
 386         account.save();
 387     }
 388
 389     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 390         if (pin.isPresent()) {
 391             account.setRegistrationLockPin(pin.get());
 392             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 393         } else {
 394             account.setRegistrationLockPin(null);
 395             accountManager.removeRegistrationLockV1();
 396         }
 397         account.save();
 398     }
 399
 400     void refreshPreKeys() throws IOException {
 401         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 402         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 403         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 404
 405         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 406     }
 407
 408     private SignalServiceMessageReceiver getMessageReceiver() {
 409         // TODO implement ZkGroup support
 410         final ClientZkProfileOperations clientZkProfileOperations = null;
 411         return new SignalServiceMessageReceiver(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), userAgent, null, timer, clientZkProfileOperations);
 412     }
 413
 414     private SignalServiceMessageSender getMessageSender() {
 415         // TODO implement ZkGroup support
 416         final ClientZkProfileOperations clientZkProfileOperations = null;
 417         final boolean attachmentsV3 = false;
 418         final ExecutorService executor = null;
 419         return new SignalServiceMessageSender(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 420                 account.getDeviceId(), account.getSignalProtocolStore(), userAgent, account.isMultiDevice(), attachmentsV3, Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent(), clientZkProfileOperations, executor);
 421     }
 422
 423     private SignalServiceProfile getEncryptedRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 424         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 425                 : messagePipe;
 426
 427         if (pipe != null) {
 428             try {
 429                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS).getProfile();
 430             } catch (IOException | InterruptedException | ExecutionException | TimeoutException ignored) {
 431             }
 432         }
 433
 434         SignalServiceMessageReceiver receiver = getMessageReceiver();
 435         try {
 436             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS).getProfile();
 437         } catch (InterruptedException | ExecutionException | TimeoutException e) {
 438             throw new IOException("Failed to retrieve profile", e);
 439         }
 440     }
 441
 442     private SignalProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess, ProfileKey profileKey) throws IOException {
 443         return decryptProfile(getEncryptedRecipientProfile(address, unidentifiedAccess), profileKey);
 444     }
 445
 446     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 447         File file = getGroupAvatarFile(groupId);
 448         if (!file.exists()) {
 449             return Optional.absent();
 450         }
 451
 452         return Optional.of(Utils.createAttachment(file));
 453     }
 454
 455     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 456         File file = getContactAvatarFile(number);
 457         if (!file.exists()) {
 458             return Optional.absent();
 459         }
 460
 461         return Optional.of(Utils.createAttachment(file));
 462     }
 463
 464     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 465         GroupInfo g = account.getGroupStore().getGroup(groupId);
 466         if (g == null) {
 467             throw new GroupNotFoundException(groupId);
 468         }
 469         if (!g.isMember(account.getSelfAddress())) {
 470             throw new NotAGroupMemberException(groupId, g.name);
 471         }
 472         return g;
 473     }
 474
 475     public List<GroupInfo> getGroups() {
 476         return account.getGroupStore().getGroups();
 477     }
 478
 479     public long sendGroupMessage(String messageText, List<String> attachments,
 480                                  byte[] groupId)
 481             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 482         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 483         if (attachments != null) {
 484             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 485         }
 486         if (groupId != null) {
 487             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 488                     .withId(groupId)
 489                     .build();
 490             messageBuilder.asGroupMessage(group);
 491         }
 492
 493         final GroupInfo g = getGroupForSending(groupId);
 494
 495         messageBuilder.withExpiration(g.messageExpirationTime);
 496
 497         return sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 498     }
 499
 500     public void sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 501                                          long targetSentTimestamp, byte[] groupId)
 502             throws IOException, EncapsulatedExceptions, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 503         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 504         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 505                 .withReaction(reaction);
 506         if (groupId != null) {
 507             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 508                     .withId(groupId)
 509                     .build();
 510             messageBuilder.asGroupMessage(group);
 511         }
 512         final GroupInfo g = getGroupForSending(groupId);
 513         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 514     }
 515
 516     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions, NotAGroupMemberException {
 517         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 518                 .withId(groupId)
 519                 .build();
 520
 521         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 522                 .asGroupMessage(group);
 523
 524         final GroupInfo g = getGroupForSending(groupId);
 525         g.removeMember(account.getSelfAddress());
 526         account.getGroupStore().updateGroup(g);
 527
 528         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 529     }
 530
 531     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 532         GroupInfo g;
 533         if (groupId == null) {
 534             // Create new group
 535             g = new GroupInfo(KeyUtils.createGroupId());
 536             g.addMembers(Collections.singleton(account.getSelfAddress()));
 537         } else {
 538             g = getGroupForSending(groupId);
 539         }
 540
 541         if (name != null) {
 542             g.name = name;
 543         }
 544
 545         if (members != null) {
 546             final Set<String> newE164Members = new HashSet<>();
 547             for (SignalServiceAddress member : members) {
 548                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 549                     continue;
 550                 }
 551                 newE164Members.add(member.getNumber().get());
 552             }
 553
 554             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 555             if (contacts.size() != newE164Members.size()) {
 556                 // Some of the new members are not registered on Signal
 557                 for (ContactTokenDetails contact : contacts) {
 558                     newE164Members.remove(contact.getNumber());
 559                 }
 560                 throw new IOException("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 561             }
 562
 563             g.addMembers(members);
 564         }
 565
 566         if (avatarFile != null) {
 567             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 568             File aFile = getGroupAvatarFile(g.groupId);
 569             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 570         }
 571
 572         account.getGroupStore().updateGroup(g);
 573
 574         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 575
 576         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 577         return g.groupId;
 578     }
 579
 580     void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 581         if (groupId == null) {
 582             return;
 583         }
 584         GroupInfo g = getGroupForSending(groupId);
 585
 586         if (!g.isMember(recipient)) {
 587             return;
 588         }
 589
 590         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 591
 592         // Send group message only to the recipient who requested it
 593         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 594     }
 595
 596     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) throws AttachmentInvalidException {
 597         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 598                 .withId(g.groupId)
 599                 .withName(g.name)
 600                 .withMembers(new ArrayList<>(g.getMembers()));
 601
 602         File aFile = getGroupAvatarFile(g.groupId);
 603         if (aFile.exists()) {
 604             try {
 605                 group.withAvatar(Utils.createAttachment(aFile));
 606             } catch (IOException e) {
 607                 throw new AttachmentInvalidException(aFile.toString(), e);
 608             }
 609         }
 610
 611         return SignalServiceDataMessage.newBuilder()
 612                 .asGroupMessage(group.build())
 613                 .withExpiration(g.messageExpirationTime);
 614     }
 615
 616     void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 617         if (groupId == null) {
 618             return;
 619         }
 620
 621         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 622                 .withId(groupId);
 623
 624         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 625                 .asGroupMessage(group.build());
 626
 627         // Send group info request message to the recipient who sent us a message with this groupId
 628         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 629     }
 630
 631     void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 632         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 633                 Collections.singletonList(messageId),
 634                 System.currentTimeMillis());
 635
 636         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 637     }
 638
 639     public long sendMessage(String messageText, List<String> attachments,
 640                             List<String> recipients)
 641             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 642         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 643         if (attachments != null) {
 644             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 645
 646             // Upload attachments here, so we only upload once even for multiple recipients
 647             SignalServiceMessageSender messageSender = getMessageSender();
 648             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 649             for (SignalServiceAttachment attachment : attachmentStreams) {
 650                 if (attachment.isStream()) {
 651                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 652                 } else if (attachment.isPointer()) {
 653                     attachmentPointers.add(attachment.asPointer());
 654                 }
 655             }
 656
 657             messageBuilder.withAttachments(attachmentPointers);
 658         }
 659         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 660     }
 661
 662     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 663                                     long targetSentTimestamp, List<String> recipients)
 664             throws IOException, EncapsulatedExceptions, InvalidNumberException {
 665         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 666         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 667                 .withReaction(reaction);
 668         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 669     }
 670
 671     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 672         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 673                 .asEndSessionMessage();
 674
 675         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 676         try {
 677             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 678         } catch (Exception e) {
 679             for (SignalServiceAddress address : signalServiceAddresses) {
 680                 handleEndSession(address);
 681             }
 682             account.save();
 683             throw e;
 684         }
 685     }
 686
 687     public String getContactName(String number) throws InvalidNumberException {
 688         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 689         if (contact == null) {
 690             return "";
 691         } else {
 692             return contact.name;
 693         }
 694     }
 695
 696     public void setContactName(String number, String name) throws InvalidNumberException {
 697         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 698         ContactInfo contact = account.getContactStore().getContact(address);
 699         if (contact == null) {
 700             contact = new ContactInfo(address);
 701         }
 702         contact.name = name;
 703         account.getContactStore().updateContact(contact);
 704         account.save();
 705     }
 706
 707     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 708         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 709     }
 710
 711     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 712         ContactInfo contact = account.getContactStore().getContact(address);
 713         if (contact == null) {
 714             contact = new ContactInfo(address);
 715         }
 716         contact.blocked = blocked;
 717         account.getContactStore().updateContact(contact);
 718         account.save();
 719     }
 720
 721     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 722         GroupInfo group = getGroup(groupId);
 723         if (group == null) {
 724             throw new GroupNotFoundException(groupId);
 725         }
 726
 727         group.blocked = blocked;
 728         account.getGroupStore().updateGroup(group);
 729         account.save();
 730     }
 731
 732     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 733         if (groupId.length == 0) {
 734             groupId = null;
 735         }
 736         if (name.isEmpty()) {
 737             name = null;
 738         }
 739         if (members.isEmpty()) {
 740             members = null;
 741         }
 742         if (avatar.isEmpty()) {
 743             avatar = null;
 744         }
 745         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 746     }
 747
 748     /**
 749      * Change the expiration timer for a contact
 750      */
 751     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
 752         ContactInfo contact = account.getContactStore().getContact(address);
 753         contact.messageExpirationTime = messageExpirationTimer;
 754         account.getContactStore().updateContact(contact);
 755         sendExpirationTimerUpdate(address);
 756         account.save();
 757     }
 758
 759     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
 760         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 761                 .asExpirationUpdate();
 762         sendMessage(messageBuilder, Collections.singleton(address));
 763     }
 764
 765     /**
 766      * Change the expiration timer for a contact
 767      */
 768     public void setExpirationTimer(String number, int messageExpirationTimer) throws IOException, InvalidNumberException {
 769         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 770         setExpirationTimer(address, messageExpirationTimer);
 771     }
 772
 773     /**
 774      * Change the expiration timer for a group
 775      */
 776     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 777         GroupInfo g = account.getGroupStore().getGroup(groupId);
 778         g.messageExpirationTime = messageExpirationTimer;
 779         account.getGroupStore().updateGroup(g);
 780     }
 781
 782     /**
 783      * Upload the sticker pack from path.
 784      *
 785      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 786      * @return if successful, returns the URL to install the sticker pack in the signal app
 787      */
 788     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 789         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 790
 791         SignalServiceMessageSender messageSender = getMessageSender();
 792
 793         byte[] packKey = KeyUtils.createStickerUploadKey();
 794         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 795
 796         try {
 797             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 798                     .toString();
 799         } catch (URISyntaxException e) {
 800             throw new AssertionError(e);
 801         }
 802     }
 803
 804     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 805         ZipFile zip = null;
 806         String rootPath = null;
 807
 808         final File file = new File(path);
 809         if (file.getName().endsWith(".zip")) {
 810             zip = new ZipFile(file);
 811         } else if (file.getName().equals("manifest.json")) {
 812             rootPath = file.getParent();
 813         } else {
 814             throw new StickerPackInvalidException("Could not find manifest.json");
 815         }
 816
 817         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 818
 819         if (pack.stickers == null) {
 820             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 821         }
 822
 823         if (pack.stickers.isEmpty()) {
 824             throw new StickerPackInvalidException("Must include stickers.");
 825         }
 826
 827         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 828         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 829             if (sticker.file == null) {
 830                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 831             }
 832
 833             Pair<InputStream, Long> data;
 834             try {
 835                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 836             } catch (IOException ignored) {
 837                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 838             }
 839
 840             String contentType = Utils.getFileMimeType(new File(sticker.file), null);
 841             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""), contentType);
 842             stickers.add(stickerInfo);
 843         }
 844
 845         StickerInfo cover = null;
 846         if (pack.cover != null) {
 847             if (pack.cover.file == null) {
 848                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 849             }
 850
 851             Pair<InputStream, Long> data;
 852             try {
 853                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 854             } catch (IOException ignored) {
 855                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 856             }
 857
 858             String contentType = Utils.getFileMimeType(new File(pack.cover.file), null);
 859             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""), contentType);
 860         }
 861
 862         return new SignalServiceStickerManifestUpload(
 863                 pack.title,
 864                 pack.author,
 865                 cover,
 866                 stickers);
 867     }
 868
 869     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 870         InputStream inputStream;
 871         if (zip != null) {
 872             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 873         } else {
 874             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 875         }
 876         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 877     }
 878
 879     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 880         if (zip != null) {
 881             final ZipEntry entry = zip.getEntry(subfile);
 882             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 883         } else {
 884             final File file = new File(rootPath, subfile);
 885             return new Pair<>(new FileInputStream(file), file.length());
 886         }
 887     }
 888
 889     void requestSyncGroups() throws IOException {
 890         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 891         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 892         try {
 893             sendSyncMessage(message);
 894         } catch (UntrustedIdentityException e) {
 895             e.printStackTrace();
 896         }
 897     }
 898
 899     void requestSyncContacts() throws IOException {
 900         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 901         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 902         try {
 903             sendSyncMessage(message);
 904         } catch (UntrustedIdentityException e) {
 905             e.printStackTrace();
 906         }
 907     }
 908
 909     void requestSyncBlocked() throws IOException {
 910         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 911         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 912         try {
 913             sendSyncMessage(message);
 914         } catch (UntrustedIdentityException e) {
 915             e.printStackTrace();
 916         }
 917     }
 918
 919     void requestSyncConfiguration() throws IOException {
 920         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 921         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 922         try {
 923             sendSyncMessage(message);
 924         } catch (UntrustedIdentityException e) {
 925             e.printStackTrace();
 926         }
 927     }
 928
 929     private byte[] getSenderCertificate() {
 930         // TODO support UUID capable sender certificates
 931         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
 932         byte[] certificate;
 933         try {
 934             certificate = accountManager.getSenderCertificate();
 935         } catch (IOException e) {
 936             System.err.println("Failed to get sender certificate: " + e);
 937             return null;
 938         }
 939         // TODO cache for a day
 940         return certificate;
 941     }
 942
 943     private byte[] getSelfUnidentifiedAccessKey() {
 944         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 945     }
 946
 947     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
 948         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 949         try {
 950             return new SignalProfile(
 951                     encryptedProfile.getIdentityKey(),
 952                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 953                     encryptedProfile.getAvatar(),
 954                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 955                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
 956             );
 957         } catch (InvalidCiphertextException e) {
 958             return null;
 959         }
 960     }
 961
 962     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 963         ContactInfo contact = account.getContactStore().getContact(recipient);
 964         if (contact == null || contact.profileKey == null) {
 965             return null;
 966         }
 967         ProfileKey theirProfileKey;
 968         try {
 969             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
 970         } catch (InvalidInputException | IOException e) {
 971             throw new AssertionError(e);
 972         }
 973         SignalProfile targetProfile;
 974         try {
 975             targetProfile = getRecipientProfile(recipient, Optional.absent(), theirProfileKey);
 976         } catch (IOException e) {
 977             System.err.println("Failed to get recipient profile: " + e);
 978             return null;
 979         }
 980
 981         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
 982             return null;
 983         }
 984
 985         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
 986             return KeyUtils.createUnrestrictedUnidentifiedAccess();
 987         }
 988
 989         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
 990     }
 991
 992     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 993         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
 994         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
 995
 996         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
 997             return Optional.absent();
 998         }
 999
1000         try {
1001             return Optional.of(new UnidentifiedAccessPair(
1002                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1003                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1004             ));
1005         } catch (InvalidCertificateException e) {
1006             return Optional.absent();
1007         }
1008     }
1009
1010     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1011         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1012         for (SignalServiceAddress recipient : recipients) {
1013             result.add(getAccessFor(recipient));
1014         }
1015         return result;
1016     }
1017
1018     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1019         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1020         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1021         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1022
1023         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1024             return Optional.absent();
1025         }
1026
1027         try {
1028             return Optional.of(new UnidentifiedAccessPair(
1029                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1030                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1031             ));
1032         } catch (InvalidCertificateException e) {
1033             return Optional.absent();
1034         }
1035     }
1036
1037     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1038         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1039
1040         if (unidentifiedAccess.isPresent()) {
1041             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1042         }
1043
1044         return Optional.absent();
1045     }
1046
1047     private void sendSyncMessage(SignalServiceSyncMessage message)
1048             throws IOException, UntrustedIdentityException {
1049         SignalServiceMessageSender messageSender = getMessageSender();
1050         try {
1051             messageSender.sendMessage(message, getAccessForSync());
1052         } catch (UntrustedIdentityException e) {
1053             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1054             throw e;
1055         }
1056     }
1057
1058     /**
1059      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1060      */
1061     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1062             throws EncapsulatedExceptions, IOException {
1063         final long timestamp = System.currentTimeMillis();
1064         messageBuilder.withTimestamp(timestamp);
1065         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1066
1067         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1068         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1069         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1070
1071         for (SendMessageResult result : results) {
1072             if (result.isUnregisteredFailure()) {
1073                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1074             } else if (result.isNetworkFailure()) {
1075                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1076             } else if (result.getIdentityFailure() != null) {
1077                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1078             }
1079         }
1080         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1081             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1082         }
1083         return timestamp;
1084     }
1085
1086     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1087         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1088
1089         for (String number : numbers) {
1090             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1091         }
1092         return signalServiceAddresses;
1093     }
1094
1095     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1096             throws IOException {
1097         if (messagePipe == null) {
1098             messagePipe = getMessageReceiver().createMessagePipe();
1099         }
1100         if (unidentifiedMessagePipe == null) {
1101             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1102         }
1103         SignalServiceDataMessage message = null;
1104         try {
1105             message = messageBuilder.build();
1106             if (message.getGroupContext().isPresent()) {
1107                 try {
1108                     SignalServiceMessageSender messageSender = getMessageSender();
1109                     final boolean isRecipientUpdate = false;
1110                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1111                     for (SendMessageResult r : result) {
1112                         if (r.getIdentityFailure() != null) {
1113                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1114                         }
1115                     }
1116                     return result;
1117                 } catch (UntrustedIdentityException e) {
1118                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1119                     return Collections.emptyList();
1120                 }
1121             } else {
1122                 // Send to all individually, so sync messages are sent correctly
1123                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1124                 for (SignalServiceAddress address : recipients) {
1125                     ContactInfo contact = account.getContactStore().getContact(address);
1126                     if (contact != null) {
1127                         messageBuilder.withExpiration(contact.messageExpirationTime);
1128                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1129                     } else {
1130                         messageBuilder.withExpiration(0);
1131                         messageBuilder.withProfileKey(null);
1132                     }
1133                     message = messageBuilder.build();
1134                     if (address.matches(account.getSelfAddress())) {
1135                         results.add(sendSelfMessage(message));
1136                     } else {
1137                         results.add(sendMessage(address, message));
1138                     }
1139                 }
1140                 return results;
1141             }
1142         } finally {
1143             if (message != null && message.isEndSession()) {
1144                 for (SignalServiceAddress recipient : recipients) {
1145                     handleEndSession(recipient);
1146                 }
1147             }
1148             account.save();
1149         }
1150     }
1151
1152     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1153         SignalServiceMessageSender messageSender = getMessageSender();
1154
1155         SignalServiceAddress recipient = account.getSelfAddress();
1156
1157         final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1158         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1159                 message.getTimestamp(),
1160                 message,
1161                 message.getExpiresInSeconds(),
1162                 Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1163                 false);
1164         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1165
1166         try {
1167             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1168             return SendMessageResult.success(recipient, unidentifiedAccess.isPresent(), false);
1169         } catch (UntrustedIdentityException e) {
1170             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1171             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1172         }
1173     }
1174
1175     private SendMessageResult sendMessage(SignalServiceAddress address, SignalServiceDataMessage message) throws IOException {
1176         SignalServiceMessageSender messageSender = getMessageSender();
1177
1178         try {
1179             return messageSender.sendMessage(address, getAccessFor(address), message);
1180         } catch (UntrustedIdentityException e) {
1181             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1182             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1183         }
1184     }
1185
1186     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1187         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1188         try {
1189             return cipher.decrypt(envelope);
1190         } catch (ProtocolUntrustedIdentityException e) {
1191             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1192                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1193                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1194                 throw identityException;
1195             }
1196             throw new AssertionError(e);
1197         }
1198     }
1199
1200     private void handleEndSession(SignalServiceAddress source) {
1201         account.getSignalProtocolStore().deleteAllSessions(source);
1202     }
1203
1204     private List<HandleAction> handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1205         List<HandleAction> actions = new ArrayList<>();
1206         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1207             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1208             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1209             switch (groupInfo.getType()) {
1210                 case UPDATE:
1211                     if (group == null) {
1212                         group = new GroupInfo(groupInfo.getGroupId());
1213                     }
1214
1215                     if (groupInfo.getAvatar().isPresent()) {
1216                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1217                         if (avatar.isPointer()) {
1218                             try {
1219                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1220                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1221                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1222                             }
1223                         }
1224                     }
1225
1226                     if (groupInfo.getName().isPresent()) {
1227                         group.name = groupInfo.getName().get();
1228                     }
1229
1230                     if (groupInfo.getMembers().isPresent()) {
1231                         group.addMembers(groupInfo.getMembers().get()
1232                                 .stream()
1233                                 .map(this::resolveSignalServiceAddress)
1234                                 .collect(Collectors.toSet()));
1235                     }
1236
1237                     account.getGroupStore().updateGroup(group);
1238                     break;
1239                 case DELIVER:
1240                     if (group == null && !isSync) {
1241                         actions.add(new SendGroupInfoRequestAction(source, groupInfo.getGroupId()));
1242                     }
1243                     break;
1244                 case QUIT:
1245                     if (group != null) {
1246                         group.removeMember(source);
1247                         account.getGroupStore().updateGroup(group);
1248                     }
1249                     break;
1250                 case REQUEST_INFO:
1251                     if (group != null && !isSync) {
1252                         actions.add(new SendGroupUpdateAction(source, group.groupId));
1253                     }
1254                     break;
1255             }
1256         }
1257         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1258         if (message.isEndSession()) {
1259             handleEndSession(conversationPartnerAddress);
1260         }
1261         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1262             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1263                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1264                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1265                 if (group == null) {
1266                     group = new GroupInfo(groupInfo.getGroupId());
1267                 }
1268                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1269                     group.messageExpirationTime = message.getExpiresInSeconds();
1270                     account.getGroupStore().updateGroup(group);
1271                 }
1272             } else {
1273                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1274                 if (contact == null) {
1275                     contact = new ContactInfo(conversationPartnerAddress);
1276                 }
1277                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1278                     contact.messageExpirationTime = message.getExpiresInSeconds();
1279                     account.getContactStore().updateContact(contact);
1280                 }
1281             }
1282         }
1283         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1284             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1285                 if (attachment.isPointer()) {
1286                     try {
1287                         retrieveAttachment(attachment.asPointer());
1288                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1289                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1290                     }
1291                 }
1292             }
1293         }
1294         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1295             if (source.matches(account.getSelfAddress())) {
1296                 try {
1297                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1298                 } catch (InvalidInputException ignored) {
1299                 }
1300                 ContactInfo contact = account.getContactStore().getContact(source);
1301                 if (contact != null) {
1302                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1303                     account.getContactStore().updateContact(contact);
1304                 }
1305             } else {
1306                 ContactInfo contact = account.getContactStore().getContact(source);
1307                 if (contact == null) {
1308                     contact = new ContactInfo(source);
1309                 }
1310                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1311                 account.getContactStore().updateContact(contact);
1312             }
1313         }
1314         if (message.getPreviews().isPresent()) {
1315             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1316             for (SignalServiceDataMessage.Preview preview : previews) {
1317                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1318                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1319                     try {
1320                         retrieveAttachment(attachment);
1321                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1322                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1323                     }
1324                 }
1325             }
1326         }
1327         return actions;
1328     }
1329
1330     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1331         final File cachePath = new File(getMessageCachePath());
1332         if (!cachePath.exists()) {
1333             return;
1334         }
1335         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1336             if (!dir.isDirectory()) {
1337                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1338                 continue;
1339             }
1340
1341             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1342                 if (!fileEntry.isFile()) {
1343                     continue;
1344                 }
1345                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1346             }
1347             // Try to delete directory if empty
1348             dir.delete();
1349         }
1350     }
1351
1352     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1353         SignalServiceEnvelope envelope;
1354         try {
1355             envelope = Utils.loadEnvelope(fileEntry);
1356             if (envelope == null) {
1357                 return;
1358             }
1359         } catch (IOException e) {
1360             e.printStackTrace();
1361             return;
1362         }
1363         SignalServiceContent content = null;
1364         if (!envelope.isReceipt()) {
1365             try {
1366                 content = decryptMessage(envelope);
1367             } catch (Exception e) {
1368                 return;
1369             }
1370             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1371             for (HandleAction action : actions) {
1372                 try {
1373                     action.execute(this);
1374                 } catch (Throwable e) {
1375                     e.printStackTrace();
1376                 }
1377             }
1378         }
1379         account.save();
1380         handler.handleMessage(envelope, content, null);
1381         try {
1382             Files.delete(fileEntry.toPath());
1383         } catch (IOException e) {
1384             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1385         }
1386     }
1387
1388     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1389         retryFailedReceivedMessages(handler, ignoreAttachments);
1390         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1391
1392         Set<HandleAction> queuedActions = null;
1393
1394         if (messagePipe == null) {
1395             messagePipe = messageReceiver.createMessagePipe();
1396         }
1397
1398         boolean hasCaughtUpWithOldMessages = false;
1399
1400         while (true) {
1401             SignalServiceEnvelope envelope;
1402             SignalServiceContent content = null;
1403             Exception exception = null;
1404             final long now = new Date().getTime();
1405             try {
1406                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1407                     // store message on disk, before acknowledging receipt to the server
1408                     try {
1409                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1410                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1411                         Utils.storeEnvelope(envelope1, cacheFile);
1412                     } catch (IOException e) {
1413                         System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1414                     }
1415                 });
1416                 if (result.isPresent()) {
1417                     envelope = result.get();
1418                 } else {
1419                     // Received indicator that server queue is empty
1420                     hasCaughtUpWithOldMessages = true;
1421
1422                     if (queuedActions != null) {
1423                         for (HandleAction action : queuedActions) {
1424                             try {
1425                                 action.execute(this);
1426                             } catch (Throwable e) {
1427                                 e.printStackTrace();
1428                             }
1429                         }
1430                         queuedActions.clear();
1431                         queuedActions = null;
1432                     }
1433
1434                     // Continue to wait another timeout for new messages
1435                     continue;
1436                 }
1437             } catch (TimeoutException e) {
1438                 if (returnOnTimeout)
1439                     return;
1440                 continue;
1441             } catch (InvalidVersionException e) {
1442                 System.err.println("Ignoring error: " + e.getMessage());
1443                 continue;
1444             }
1445             if (envelope.hasSource()) {
1446                 // Store uuid if we don't have it already
1447                 SignalServiceAddress source = envelope.getSourceAddress();
1448                 resolveSignalServiceAddress(source);
1449             }
1450             if (!envelope.isReceipt()) {
1451                 try {
1452                     content = decryptMessage(envelope);
1453                 } catch (Exception e) {
1454                     exception = e;
1455                 }
1456                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1457                 if (hasCaughtUpWithOldMessages) {
1458                     for (HandleAction action : actions) {
1459                         try {
1460                             action.execute(this);
1461                         } catch (Throwable e) {
1462                             e.printStackTrace();
1463                         }
1464                     }
1465                 } else {
1466                     if (queuedActions == null) {
1467                         queuedActions = new HashSet<>();
1468                     }
1469                     queuedActions.addAll(actions);
1470                 }
1471             }
1472             account.save();
1473             if (!isMessageBlocked(envelope, content)) {
1474                 handler.handleMessage(envelope, content, exception);
1475             }
1476             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1477                 File cacheFile = null;
1478                 try {
1479                     cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1480                     Files.delete(cacheFile.toPath());
1481                     // Try to delete directory if empty
1482                     new File(getMessageCachePath()).delete();
1483                 } catch (IOException e) {
1484                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1485                 }
1486             }
1487         }
1488     }
1489
1490     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1491         SignalServiceAddress source;
1492         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1493             source = envelope.getSourceAddress();
1494         } else if (content != null) {
1495             source = content.getSender();
1496         } else {
1497             return false;
1498         }
1499         ContactInfo sourceContact = account.getContactStore().getContact(source);
1500         if (sourceContact != null && sourceContact.blocked) {
1501             return true;
1502         }
1503
1504         if (content != null && content.getDataMessage().isPresent()) {
1505             SignalServiceDataMessage message = content.getDataMessage().get();
1506             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1507                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1508                 GroupInfo group = getGroup(groupInfo.getGroupId());
1509                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1510                     return true;
1511                 }
1512             }
1513         }
1514         return false;
1515     }
1516
1517     private List<HandleAction> handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1518         List<HandleAction> actions = new ArrayList<>();
1519         if (content != null) {
1520             SignalServiceAddress sender;
1521             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1522                 sender = envelope.getSourceAddress();
1523             } else {
1524                 sender = content.getSender();
1525             }
1526             // Store uuid if we don't have it already
1527             resolveSignalServiceAddress(sender);
1528
1529             if (content.getDataMessage().isPresent()) {
1530                 SignalServiceDataMessage message = content.getDataMessage().get();
1531
1532                 if (content.isNeedsReceipt()) {
1533                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1534                 }
1535
1536                 actions.addAll(handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments));
1537             }
1538             if (content.getSyncMessage().isPresent()) {
1539                 account.setMultiDevice(true);
1540                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1541                 if (syncMessage.getSent().isPresent()) {
1542                     SentTranscriptMessage message = syncMessage.getSent().get();
1543                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments));
1544                 }
1545                 if (syncMessage.getRequest().isPresent()) {
1546                     RequestMessage rm = syncMessage.getRequest().get();
1547                     if (rm.isContactsRequest()) {
1548                         actions.add(SendSyncContactsAction.create());
1549                     }
1550                     if (rm.isGroupsRequest()) {
1551                         actions.add(SendSyncGroupsAction.create());
1552                     }
1553                     if (rm.isBlockedListRequest()) {
1554                         actions.add(SendSyncBlockedListAction.create());
1555                     }
1556                     // TODO Handle rm.isConfigurationRequest();
1557                 }
1558                 if (syncMessage.getGroups().isPresent()) {
1559                     File tmpFile = null;
1560                     try {
1561                         tmpFile = IOUtils.createTempFile();
1562                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1563                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1564                             DeviceGroup g;
1565                             while ((g = s.read()) != null) {
1566                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1567                                 if (syncGroup == null) {
1568                                     syncGroup = new GroupInfo(g.getId());
1569                                 }
1570                                 if (g.getName().isPresent()) {
1571                                     syncGroup.name = g.getName().get();
1572                                 }
1573                                 syncGroup.addMembers(g.getMembers()
1574                                         .stream()
1575                                         .map(this::resolveSignalServiceAddress)
1576                                         .collect(Collectors.toSet()));
1577                                 if (!g.isActive()) {
1578                                     syncGroup.removeMember(account.getSelfAddress());
1579                                 } else {
1580                                     // Add ourself to the member set as it's marked as active
1581                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1582                                 }
1583                                 syncGroup.blocked = g.isBlocked();
1584                                 if (g.getColor().isPresent()) {
1585                                     syncGroup.color = g.getColor().get();
1586                                 }
1587
1588                                 if (g.getAvatar().isPresent()) {
1589                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1590                                 }
1591                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1592                                 syncGroup.archived = g.isArchived();
1593                                 account.getGroupStore().updateGroup(syncGroup);
1594                             }
1595                         }
1596                     } catch (Exception e) {
1597                         e.printStackTrace();
1598                     } finally {
1599                         if (tmpFile != null) {
1600                             try {
1601                                 Files.delete(tmpFile.toPath());
1602                             } catch (IOException e) {
1603                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1604                             }
1605                         }
1606                     }
1607                 }
1608                 if (syncMessage.getBlockedList().isPresent()) {
1609                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1610                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1611                         setContactBlocked(resolveSignalServiceAddress(address), true);
1612                     }
1613                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1614                         try {
1615                             setGroupBlocked(groupId, true);
1616                         } catch (GroupNotFoundException e) {
1617                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1618                         }
1619                     }
1620                 }
1621                 if (syncMessage.getContacts().isPresent()) {
1622                     File tmpFile = null;
1623                     try {
1624                         tmpFile = IOUtils.createTempFile();
1625                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1626                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1627                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1628                             if (contactsMessage.isComplete()) {
1629                                 account.getContactStore().clear();
1630                             }
1631                             DeviceContact c;
1632                             while ((c = s.read()) != null) {
1633                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1634                                     account.setProfileKey(c.getProfileKey().get());
1635                                 }
1636                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1637                                 ContactInfo contact = account.getContactStore().getContact(address);
1638                                 if (contact == null) {
1639                                     contact = new ContactInfo(address);
1640                                 }
1641                                 if (c.getName().isPresent()) {
1642                                     contact.name = c.getName().get();
1643                                 }
1644                                 if (c.getColor().isPresent()) {
1645                                     contact.color = c.getColor().get();
1646                                 }
1647                                 if (c.getProfileKey().isPresent()) {
1648                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1649                                 }
1650                                 if (c.getVerified().isPresent()) {
1651                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1652                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1653                                 }
1654                                 if (c.getExpirationTimer().isPresent()) {
1655                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1656                                 }
1657                                 contact.blocked = c.isBlocked();
1658                                 contact.inboxPosition = c.getInboxPosition().orNull();
1659                                 contact.archived = c.isArchived();
1660                                 account.getContactStore().updateContact(contact);
1661
1662                                 if (c.getAvatar().isPresent()) {
1663                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1664                                 }
1665                             }
1666                         }
1667                     } catch (Exception e) {
1668                         e.printStackTrace();
1669                     } finally {
1670                         if (tmpFile != null) {
1671                             try {
1672                                 Files.delete(tmpFile.toPath());
1673                             } catch (IOException e) {
1674                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1675                             }
1676                         }
1677                     }
1678                 }
1679                 if (syncMessage.getVerified().isPresent()) {
1680                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1681                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1682                 }
1683                 if (syncMessage.getConfiguration().isPresent()) {
1684                     // TODO
1685                 }
1686             }
1687         }
1688         return actions;
1689     }
1690
1691     private File getContactAvatarFile(String number) {
1692         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
1693     }
1694
1695     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException, MissingConfigurationException {
1696         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1697         if (attachment.isPointer()) {
1698             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1699             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1700         } else {
1701             SignalServiceAttachmentStream stream = attachment.asStream();
1702             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1703         }
1704     }
1705
1706     private File getGroupAvatarFile(byte[] groupId) {
1707         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1708     }
1709
1710     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException, MissingConfigurationException {
1711         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1712         if (attachment.isPointer()) {
1713             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1714             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1715         } else {
1716             SignalServiceAttachmentStream stream = attachment.asStream();
1717             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1718         }
1719     }
1720
1721     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1722         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
1723     }
1724
1725     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
1726         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
1727         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
1728     }
1729
1730     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException, MissingConfigurationException {
1731         if (storePreview && pointer.getPreview().isPresent()) {
1732             File previewFile = new File(outputFile + ".preview");
1733             try (OutputStream output = new FileOutputStream(previewFile)) {
1734                 byte[] preview = pointer.getPreview().get();
1735                 output.write(preview, 0, preview.length);
1736             } catch (FileNotFoundException e) {
1737                 e.printStackTrace();
1738                 return null;
1739             }
1740         }
1741
1742         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1743
1744         File tmpFile = IOUtils.createTempFile();
1745         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE)) {
1746             try (OutputStream output = new FileOutputStream(outputFile)) {
1747                 byte[] buffer = new byte[4096];
1748                 int read;
1749
1750                 while ((read = input.read(buffer)) != -1) {
1751                     output.write(buffer, 0, read);
1752                 }
1753             } catch (FileNotFoundException e) {
1754                 e.printStackTrace();
1755                 return null;
1756             }
1757         } finally {
1758             try {
1759                 Files.delete(tmpFile.toPath());
1760             } catch (IOException e) {
1761                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1762             }
1763         }
1764         return outputFile;
1765     }
1766
1767     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException, MissingConfigurationException {
1768         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1769         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
1770     }
1771
1772     void sendGroups() throws IOException, UntrustedIdentityException {
1773         File groupsFile = IOUtils.createTempFile();
1774
1775         try {
1776             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1777                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1778                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1779                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1780                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1781                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1782                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1783                 }
1784             }
1785
1786             if (groupsFile.exists() && groupsFile.length() > 0) {
1787                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1788                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1789                             .withStream(groupsFileStream)
1790                             .withContentType("application/octet-stream")
1791                             .withLength(groupsFile.length())
1792                             .build();
1793
1794                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1795                 }
1796             }
1797         } finally {
1798             try {
1799                 Files.delete(groupsFile.toPath());
1800             } catch (IOException e) {
1801                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1802             }
1803         }
1804     }
1805
1806     public void sendContacts() throws IOException, UntrustedIdentityException {
1807         File contactsFile = IOUtils.createTempFile();
1808
1809         try {
1810             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1811                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1812                 for (ContactInfo record : account.getContactStore().getContacts()) {
1813                     VerifiedMessage verifiedMessage = null;
1814                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1815                     if (currentIdentity != null) {
1816                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1817                     }
1818
1819                     ProfileKey profileKey = null;
1820                     try {
1821                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1822                     } catch (InvalidInputException ignored) {
1823                     }
1824                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1825                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1826                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1827                             Optional.of(record.messageExpirationTime),
1828                             Optional.fromNullable(record.inboxPosition), record.archived));
1829                 }
1830
1831                 if (account.getProfileKey() != null) {
1832                     // Send our own profile key as well
1833                     out.write(new DeviceContact(account.getSelfAddress(),
1834                             Optional.absent(), Optional.absent(),
1835                             Optional.absent(), Optional.absent(),
1836                             Optional.of(account.getProfileKey()),
1837                             false, Optional.absent(), Optional.absent(), false));
1838                 }
1839             }
1840
1841             if (contactsFile.exists() && contactsFile.length() > 0) {
1842                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1843                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1844                             .withStream(contactsFileStream)
1845                             .withContentType("application/octet-stream")
1846                             .withLength(contactsFile.length())
1847                             .build();
1848
1849                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1850                 }
1851             }
1852         } finally {
1853             try {
1854                 Files.delete(contactsFile.toPath());
1855             } catch (IOException e) {
1856                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1857             }
1858         }
1859     }
1860
1861     void sendBlockedList() throws IOException, UntrustedIdentityException {
1862         List<SignalServiceAddress> addresses = new ArrayList<>();
1863         for (ContactInfo record : account.getContactStore().getContacts()) {
1864             if (record.blocked) {
1865                 addresses.add(record.getAddress());
1866             }
1867         }
1868         List<byte[]> groupIds = new ArrayList<>();
1869         for (GroupInfo record : account.getGroupStore().getGroups()) {
1870             if (record.blocked) {
1871                 groupIds.add(record.groupId);
1872             }
1873         }
1874         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1875     }
1876
1877     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1878         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1879         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1880     }
1881
1882     public List<ContactInfo> getContacts() {
1883         return account.getContactStore().getContacts();
1884     }
1885
1886     public ContactInfo getContact(String number) {
1887         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1888     }
1889
1890     public GroupInfo getGroup(byte[] groupId) {
1891         return account.getGroupStore().getGroup(groupId);
1892     }
1893
1894     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1895         return account.getSignalProtocolStore().getIdentities();
1896     }
1897
1898     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1899         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1900     }
1901
1902     /**
1903      * Trust this the identity with this fingerprint
1904      *
1905      * @param name        username of the identity
1906      * @param fingerprint Fingerprint
1907      */
1908     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1909         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1910         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1911         if (ids == null) {
1912             return false;
1913         }
1914         for (JsonIdentityKeyStore.Identity id : ids) {
1915             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1916                 continue;
1917             }
1918
1919             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1920             try {
1921                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1922             } catch (IOException | UntrustedIdentityException e) {
1923                 e.printStackTrace();
1924             }
1925             account.save();
1926             return true;
1927         }
1928         return false;
1929     }
1930
1931     /**
1932      * Trust this the identity with this safety number
1933      *
1934      * @param name         username of the identity
1935      * @param safetyNumber Safety number
1936      */
1937     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1938         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1939         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1940         if (ids == null) {
1941             return false;
1942         }
1943         for (JsonIdentityKeyStore.Identity id : ids) {
1944             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1945                 continue;
1946             }
1947
1948             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1949             try {
1950                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1951             } catch (IOException | UntrustedIdentityException e) {
1952                 e.printStackTrace();
1953             }
1954             account.save();
1955             return true;
1956         }
1957         return false;
1958     }
1959
1960     /**
1961      * Trust all keys of this identity without verification
1962      *
1963      * @param name username of the identity
1964      */
1965     public boolean trustIdentityAllKeys(String name) {
1966         SignalServiceAddress address = resolveSignalServiceAddress(name);
1967         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1968         if (ids == null) {
1969             return false;
1970         }
1971         for (JsonIdentityKeyStore.Identity id : ids) {
1972             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1973                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1974                 try {
1975                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1976                 } catch (IOException | UntrustedIdentityException e) {
1977                     e.printStackTrace();
1978                 }
1979             }
1980         }
1981         account.save();
1982         return true;
1983     }
1984
1985     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
1986         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), theirAddress, theirIdentityKey);
1987     }
1988
1989     void saveAccount() {
1990         account.save();
1991     }
1992
1993     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
1994         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
1995         return resolveSignalServiceAddress(canonicalizedNumber);
1996     }
1997
1998     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
1999         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2000
2001         return resolveSignalServiceAddress(address);
2002     }
2003
2004     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2005         if (address.matches(account.getSelfAddress())) {
2006             return account.getSelfAddress();
2007         }
2008
2009         return account.getRecipientStore().resolveServiceAddress(address);
2010     }
2011
2012     @Override
2013     public void close() throws IOException {
2014         if (messagePipe != null) {
2015             messagePipe.shutdown();
2016             messagePipe = null;
2017         }
2018
2019         if (unidentifiedMessagePipe != null) {
2020             unidentifiedMessagePipe.shutdown();
2021             unidentifiedMessagePipe = null;
2022         }
2023
2024         account.close();
2025     }
2026
2027     public interface ReceiveMessageHandler {
2028
2029         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2030     }
2031 }