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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.Signal;
  22 import org.asamk.signal.AttachmentInvalidException;
  23 import org.asamk.signal.GroupNotFoundException;
  24 import org.asamk.signal.NotAGroupMemberException;
  25 import org.asamk.signal.StickerPackInvalidException;
  26 import org.asamk.signal.TrustLevel;
  27 import org.asamk.signal.storage.SignalAccount;
  28 import org.asamk.signal.storage.contacts.ContactInfo;
  29 import org.asamk.signal.storage.groups.GroupInfo;
  30 import org.asamk.signal.storage.groups.JsonGroupStore;
  31 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  32 import org.asamk.signal.util.IOUtils;
  33 import org.asamk.signal.util.Util;
  34 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  35 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  36 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  37 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  38 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  39 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  40 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  41 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  42 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  43 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  44 import org.signal.libsignal.metadata.SelfSendException;
  45 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  46 import org.signal.zkgroup.InvalidInputException;
  47 import org.signal.zkgroup.VerificationFailedException;
  48 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  49 import org.signal.zkgroup.profiles.ProfileKey;
  50 import org.whispersystems.libsignal.IdentityKey;
  51 import org.whispersystems.libsignal.IdentityKeyPair;
  52 import org.whispersystems.libsignal.InvalidKeyException;
  53 import org.whispersystems.libsignal.InvalidMessageException;
  54 import org.whispersystems.libsignal.InvalidVersionException;
  55 import org.whispersystems.libsignal.ecc.Curve;
  56 import org.whispersystems.libsignal.ecc.ECKeyPair;
  57 import org.whispersystems.libsignal.ecc.ECPublicKey;
  58 import org.whispersystems.libsignal.state.PreKeyRecord;
  59 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  60 import org.whispersystems.libsignal.util.KeyHelper;
  61 import org.whispersystems.libsignal.util.Medium;
  62 import org.whispersystems.libsignal.util.Pair;
  63 import org.whispersystems.libsignal.util.guava.Optional;
  64 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  65 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  66 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  67 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  68 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  69 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  70 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  71 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  72 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  73 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  74 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  79 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  80 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  81 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  82 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  83 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  84 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  85 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  86 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  87 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  88 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  89 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  90 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  91 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  92 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  93 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  94 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  95 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  96 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  97 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  98 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  99 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 100 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
 101 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 102 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
 103 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 104 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
 105 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 106 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 107 import org.whispersystems.signalservice.api.util.SleepTimer;
 108 import org.whispersystems.signalservice.api.util.StreamDetails;
 109 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 110 import org.whispersystems.signalservice.api.util.UuidUtil;
 111 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 112 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 113 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 114 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 115 import org.whispersystems.signalservice.internal.util.Hex;
 116 import org.whispersystems.util.Base64;
 117
 118 import java.io.Closeable;
 119 import java.io.File;
 120 import java.io.FileInputStream;
 121 import java.io.FileNotFoundException;
 122 import java.io.FileOutputStream;
 123 import java.io.IOException;
 124 import java.io.InputStream;
 125 import java.io.OutputStream;
 126 import java.net.URI;
 127 import java.net.URISyntaxException;
 128 import java.net.URLEncoder;
 129 import java.nio.file.Files;
 130 import java.nio.file.Paths;
 131 import java.nio.file.StandardCopyOption;
 132 import java.util.ArrayList;
 133 import java.util.Arrays;
 134 import java.util.Collection;
 135 import java.util.Collections;
 136 import java.util.Date;
 137 import java.util.HashSet;
 138 import java.util.LinkedList;
 139 import java.util.List;
 140 import java.util.Locale;
 141 import java.util.Objects;
 142 import java.util.Set;
 143 import java.util.UUID;
 144 import java.util.concurrent.TimeUnit;
 145 import java.util.concurrent.TimeoutException;
 146 import java.util.stream.Collectors;
 147 import java.util.zip.ZipEntry;
 148 import java.util.zip.ZipFile;
 149
 150 public class Manager implements Signal, Closeable {
 151
 152     private final SleepTimer timer = new UptimeSleepTimer();
 153     private final SignalServiceConfiguration serviceConfiguration;
 154     private final String userAgent;
 155
 156     private final SignalAccount account;
 157     private final PathConfig pathConfig;
 158     private SignalServiceAccountManager accountManager;
 159     private SignalServiceMessagePipe messagePipe = null;
 160     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 161
 162     public Manager(SignalAccount account, PathConfig pathConfig, SignalServiceConfiguration serviceConfiguration, String userAgent) {
 163         this.account = account;
 164         this.pathConfig = pathConfig;
 165         this.serviceConfiguration = serviceConfiguration;
 166         this.userAgent = userAgent;
 167         this.accountManager = createSignalServiceAccountManager();
 168
 169         this.account.setResolver(this::resolveSignalServiceAddress);
 170     }
 171
 172     public String getUsername() {
 173         return account.getUsername();
 174     }
 175
 176     public SignalServiceAddress getSelfAddress() {
 177         return account.getSelfAddress();
 178     }
 179
 180     private SignalServiceAccountManager createSignalServiceAccountManager() {
 181         return new SignalServiceAccountManager(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), userAgent, timer);
 182     }
 183
 184     private IdentityKeyPair getIdentityKeyPair() {
 185         return account.getSignalProtocolStore().getIdentityKeyPair();
 186     }
 187
 188     public int getDeviceId() {
 189         return account.getDeviceId();
 190     }
 191
 192     private String getMessageCachePath() {
 193         return pathConfig.getDataPath() + "/" + account.getUsername() + ".d/msg-cache";
 194     }
 195
 196     private String getMessageCachePath(String sender) {
 197         if (sender == null || sender.isEmpty()) {
 198             return getMessageCachePath();
 199         }
 200
 201         return getMessageCachePath() + "/" + sender.replace("/", "_");
 202     }
 203
 204     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 205         String cachePath = getMessageCachePath(sender);
 206         IOUtils.createPrivateDirectories(cachePath);
 207         return new File(cachePath + "/" + now + "_" + timestamp);
 208     }
 209
 210     public static Manager init(String username, String settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent) throws IOException {
 211         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 212
 213         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 214             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 215             int registrationId = KeyHelper.generateRegistrationId(false);
 216
 217             ProfileKey profileKey = KeyUtils.createProfileKey();
 218             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(), username, identityKey, registrationId, profileKey);
 219             account.save();
 220
 221             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 222         }
 223
 224         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 225
 226         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 227
 228         m.migrateLegacyConfigs();
 229
 230         return m;
 231     }
 232
 233     private void migrateLegacyConfigs() {
 234         // Copy group avatars that were previously stored in the attachments folder
 235         // to the new avatar folder
 236         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 237             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 238                 File avatarFile = getGroupAvatarFile(g.groupId);
 239                 File attachmentFile = getAttachmentFile(new SignalServiceAttachmentRemoteId(g.getAvatarId()));
 240                 if (!avatarFile.exists() && attachmentFile.exists()) {
 241                     try {
 242                         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 243                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 244                     } catch (Exception e) {
 245                         // Ignore
 246                     }
 247                 }
 248             }
 249             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 250             account.save();
 251         }
 252         if (account.getProfileKey() == null) {
 253             // Old config file, creating new profile key
 254             account.setProfileKey(KeyUtils.createProfileKey());
 255             account.save();
 256         }
 257     }
 258
 259     public void checkAccountState() throws IOException {
 260         if (account.isRegistered()) {
 261             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 262                 refreshPreKeys();
 263                 account.save();
 264             }
 265             if (account.getUuid() == null) {
 266                 account.setUuid(accountManager.getOwnUuid());
 267                 account.save();
 268             }
 269         }
 270     }
 271
 272     public boolean isRegistered() {
 273         return account.isRegistered();
 274     }
 275
 276     public void register(boolean voiceVerification) throws IOException {
 277         account.setPassword(KeyUtils.createPassword());
 278
 279         // Resetting UUID, because registering doesn't work otherwise
 280         account.setUuid(null);
 281         accountManager = createSignalServiceAccountManager();
 282
 283         if (voiceVerification) {
 284             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 285         } else {
 286             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 287         }
 288
 289         account.setRegistered(false);
 290         account.save();
 291     }
 292
 293     public void updateAccountAttributes() throws IOException {
 294         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities);
 295     }
 296
 297     public void setProfileName(String name) throws IOException {
 298         accountManager.setProfileName(account.getProfileKey(), name);
 299     }
 300
 301     public void setProfileAvatar(File avatar) throws IOException {
 302         final StreamDetails streamDetails = Utils.createStreamDetailsFromFile(avatar);
 303         accountManager.setProfileAvatar(account.getProfileKey(), streamDetails);
 304         streamDetails.getStream().close();
 305     }
 306
 307     public void removeProfileAvatar() throws IOException {
 308         accountManager.setProfileAvatar(account.getProfileKey(), null);
 309     }
 310
 311     public void unregister() throws IOException {
 312         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 313         // If this is the master device, other users can't send messages to this number anymore.
 314         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 315         accountManager.setGcmId(Optional.absent());
 316
 317         account.setRegistered(false);
 318         account.save();
 319     }
 320
 321     public List<DeviceInfo> getLinkedDevices() throws IOException {
 322         List<DeviceInfo> devices = accountManager.getDevices();
 323         account.setMultiDevice(devices.size() > 1);
 324         account.save();
 325         return devices;
 326     }
 327
 328     public void removeLinkedDevices(int deviceId) throws IOException {
 329         accountManager.removeDevice(deviceId);
 330         List<DeviceInfo> devices = accountManager.getDevices();
 331         account.setMultiDevice(devices.size() > 1);
 332         account.save();
 333     }
 334
 335     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 336         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 337
 338         addDevice(info.deviceIdentifier, info.deviceKey);
 339     }
 340
 341     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 342         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 343         String verificationCode = accountManager.getNewDeviceVerificationCode();
 344
 345         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 346         account.setMultiDevice(true);
 347         account.save();
 348     }
 349
 350     private List<PreKeyRecord> generatePreKeys() {
 351         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 352
 353         final int offset = account.getPreKeyIdOffset();
 354         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 355             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 356             ECKeyPair keyPair = Curve.generateKeyPair();
 357             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 358
 359             records.add(record);
 360         }
 361
 362         account.addPreKeys(records);
 363         account.save();
 364
 365         return records;
 366     }
 367
 368     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 369         try {
 370             ECKeyPair keyPair = Curve.generateKeyPair();
 371             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 372             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 373
 374             account.addSignedPreKey(record);
 375             account.save();
 376
 377             return record;
 378         } catch (InvalidKeyException e) {
 379             throw new AssertionError(e);
 380         }
 381     }
 382
 383     public void verifyAccount(String verificationCode, String pin) throws IOException {
 384         verificationCode = verificationCode.replace("-", "");
 385         account.setSignalingKey(KeyUtils.createSignalingKey());
 386         // TODO make unrestricted unidentified access configurable
 387         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities);
 388
 389         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 390         // TODO response.isStorageCapable()
 391         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 392         account.setRegistered(true);
 393         account.setUuid(uuid);
 394         account.setRegistrationLockPin(pin);
 395         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 396
 397         refreshPreKeys();
 398         account.save();
 399     }
 400
 401     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 402         if (pin.isPresent()) {
 403             account.setRegistrationLockPin(pin.get());
 404             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 405         } else {
 406             account.setRegistrationLockPin(null);
 407             accountManager.removeRegistrationLockV1();
 408         }
 409         account.save();
 410     }
 411
 412     void refreshPreKeys() throws IOException {
 413         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 414         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 415         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 416
 417         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 418     }
 419
 420     private SignalServiceMessageReceiver getMessageReceiver() {
 421         // TODO implement ZkGroup support
 422         final ClientZkProfileOperations clientZkProfileOperations = null;
 423         return new SignalServiceMessageReceiver(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), userAgent, null, timer, clientZkProfileOperations);
 424     }
 425
 426     private SignalServiceMessageSender getMessageSender() {
 427         // TODO implement ZkGroup support
 428         final ClientZkProfileOperations clientZkProfileOperations = null;
 429         final boolean attachmentsV3 = false;
 430         return new SignalServiceMessageSender(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 431                 account.getDeviceId(), account.getSignalProtocolStore(), userAgent, account.isMultiDevice(), attachmentsV3, Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent(), clientZkProfileOperations);
 432     }
 433
 434     private SignalServiceProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 435         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 436                 : messagePipe;
 437
 438         if (pipe != null) {
 439             try {
 440                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 441             } catch (IOException ignored) {
 442             }
 443         }
 444
 445         SignalServiceMessageReceiver receiver = getMessageReceiver();
 446         try {
 447             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 448         } catch (VerificationFailedException e) {
 449             throw new AssertionError(e);
 450         }
 451     }
 452
 453     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 454         File file = getGroupAvatarFile(groupId);
 455         if (!file.exists()) {
 456             return Optional.absent();
 457         }
 458
 459         return Optional.of(Utils.createAttachment(file));
 460     }
 461
 462     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 463         File file = getContactAvatarFile(number);
 464         if (!file.exists()) {
 465             return Optional.absent();
 466         }
 467
 468         return Optional.of(Utils.createAttachment(file));
 469     }
 470
 471     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 472         GroupInfo g = account.getGroupStore().getGroup(groupId);
 473         if (g == null) {
 474             throw new GroupNotFoundException(groupId);
 475         }
 476         if (!g.isMember(account.getSelfAddress())) {
 477             throw new NotAGroupMemberException(groupId, g.name);
 478         }
 479         return g;
 480     }
 481
 482     public List<GroupInfo> getGroups() {
 483         return account.getGroupStore().getGroups();
 484     }
 485
 486     @Override
 487     public long sendGroupMessage(String messageText, List<String> attachments,
 488                                  byte[] groupId)
 489             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 490         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 491         if (attachments != null) {
 492             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 493         }
 494         if (groupId != null) {
 495             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 496                     .withId(groupId)
 497                     .build();
 498             messageBuilder.asGroupMessage(group);
 499         }
 500
 501         final GroupInfo g = getGroupForSending(groupId);
 502
 503         messageBuilder.withExpiration(g.messageExpirationTime);
 504
 505         return sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 506     }
 507
 508     public void sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 509                                          long targetSentTimestamp, byte[] groupId)
 510             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 511         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 512         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 513                 .withReaction(reaction);
 514         if (groupId != null) {
 515             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 516                     .withId(groupId)
 517                     .build();
 518             messageBuilder.asGroupMessage(group);
 519         }
 520         final GroupInfo g = getGroupForSending(groupId);
 521         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 522     }
 523
 524     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 525         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 526                 .withId(groupId)
 527                 .build();
 528
 529         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 530                 .asGroupMessage(group);
 531
 532         final GroupInfo g = getGroupForSending(groupId);
 533         g.removeMember(account.getSelfAddress());
 534         account.getGroupStore().updateGroup(g);
 535
 536         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 537     }
 538
 539     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 540         GroupInfo g;
 541         if (groupId == null) {
 542             // Create new group
 543             g = new GroupInfo(KeyUtils.createGroupId());
 544             g.addMembers(Collections.singleton(account.getSelfAddress()));
 545         } else {
 546             g = getGroupForSending(groupId);
 547         }
 548
 549         if (name != null) {
 550             g.name = name;
 551         }
 552
 553         if (members != null) {
 554             final Set<String> newE164Members = new HashSet<>();
 555             for (SignalServiceAddress member : members) {
 556                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 557                     continue;
 558                 }
 559                 newE164Members.add(member.getNumber().get());
 560             }
 561
 562             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 563             if (contacts.size() != newE164Members.size()) {
 564                 // Some of the new members are not registered on Signal
 565                 for (ContactTokenDetails contact : contacts) {
 566                     newE164Members.remove(contact.getNumber());
 567                 }
 568                 System.err.println("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 569                 System.err.println("Aborting…");
 570                 System.exit(1);
 571             }
 572
 573             g.addMembers(members);
 574         }
 575
 576         if (avatarFile != null) {
 577             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 578             File aFile = getGroupAvatarFile(g.groupId);
 579             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 580         }
 581
 582         account.getGroupStore().updateGroup(g);
 583
 584         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 585
 586         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 587         return g.groupId;
 588     }
 589
 590     private void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 591         if (groupId == null) {
 592             return;
 593         }
 594         GroupInfo g = getGroupForSending(groupId);
 595
 596         if (!g.isMember(recipient)) {
 597             return;
 598         }
 599
 600         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 601
 602         // Send group message only to the recipient who requested it
 603         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 604     }
 605
 606     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 607         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 608                 .withId(g.groupId)
 609                 .withName(g.name)
 610                 .withMembers(new ArrayList<>(g.getMembers()));
 611
 612         File aFile = getGroupAvatarFile(g.groupId);
 613         if (aFile.exists()) {
 614             try {
 615                 group.withAvatar(Utils.createAttachment(aFile));
 616             } catch (IOException e) {
 617                 throw new AttachmentInvalidException(aFile.toString(), e);
 618             }
 619         }
 620
 621         return SignalServiceDataMessage.newBuilder()
 622                 .asGroupMessage(group.build())
 623                 .withExpiration(g.messageExpirationTime);
 624     }
 625
 626     private void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 627         if (groupId == null) {
 628             return;
 629         }
 630
 631         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 632                 .withId(groupId);
 633
 634         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 635                 .asGroupMessage(group.build());
 636
 637         // Send group info request message to the recipient who sent us a message with this groupId
 638         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 639     }
 640
 641     private void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 642         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 643                 Collections.singletonList(messageId),
 644                 System.currentTimeMillis());
 645
 646         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 647     }
 648
 649     @Override
 650     public long sendMessage(String message, List<String> attachments, String recipient)
 651             throws EncapsulatedExceptions, AttachmentInvalidException, IOException, InvalidNumberException {
 652         List<String> recipients = new ArrayList<>(1);
 653         recipients.add(recipient);
 654         return sendMessage(message, attachments, recipients);
 655     }
 656
 657     @Override
 658     public long sendMessage(String messageText, List<String> attachments,
 659                             List<String> recipients)
 660             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 661         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 662         if (attachments != null) {
 663             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 664
 665             // Upload attachments here, so we only upload once even for multiple recipients
 666             SignalServiceMessageSender messageSender = getMessageSender();
 667             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 668             for (SignalServiceAttachment attachment : attachmentStreams) {
 669                 if (attachment.isStream()) {
 670                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 671                 } else if (attachment.isPointer()) {
 672                     attachmentPointers.add(attachment.asPointer());
 673                 }
 674             }
 675
 676             messageBuilder.withAttachments(attachmentPointers);
 677         }
 678         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 679     }
 680
 681     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 682                                     long targetSentTimestamp, List<String> recipients)
 683             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 684         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 685         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 686                 .withReaction(reaction);
 687         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 688     }
 689
 690     @Override
 691     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 692         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 693                 .asEndSessionMessage();
 694
 695         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 696         try {
 697             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 698         } catch (Exception e) {
 699             for (SignalServiceAddress address : signalServiceAddresses) {
 700                 handleEndSession(address);
 701             }
 702             account.save();
 703             throw e;
 704         }
 705     }
 706
 707     @Override
 708     public String getContactName(String number) throws InvalidNumberException {
 709         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 710         if (contact == null) {
 711             return "";
 712         } else {
 713             return contact.name;
 714         }
 715     }
 716
 717     @Override
 718     public void setContactName(String number, String name) throws InvalidNumberException {
 719         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 720         ContactInfo contact = account.getContactStore().getContact(address);
 721         if (contact == null) {
 722             contact = new ContactInfo(address);
 723             System.err.println("Add contact " + contact.number + " named " + name);
 724         } else {
 725             System.err.println("Updating contact " + contact.number + " name " + contact.name + " -> " + name);
 726         }
 727         contact.name = name;
 728         account.getContactStore().updateContact(contact);
 729         account.save();
 730     }
 731
 732     @Override
 733     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 734         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 735     }
 736
 737     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 738         ContactInfo contact = account.getContactStore().getContact(address);
 739         if (contact == null) {
 740             contact = new ContactInfo(address);
 741             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + address.getNumber().orNull());
 742         } else {
 743             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + address.getNumber().orNull());
 744         }
 745         contact.blocked = blocked;
 746         account.getContactStore().updateContact(contact);
 747         account.save();
 748     }
 749
 750     @Override
 751     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 752         GroupInfo group = getGroup(groupId);
 753         if (group == null) {
 754             throw new GroupNotFoundException(groupId);
 755         } else {
 756             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 757             group.blocked = blocked;
 758             account.getGroupStore().updateGroup(group);
 759             account.save();
 760         }
 761     }
 762
 763     @Override
 764     public List<byte[]> getGroupIds() {
 765         List<GroupInfo> groups = getGroups();
 766         List<byte[]> ids = new ArrayList<>(groups.size());
 767         for (GroupInfo group : groups) {
 768             ids.add(group.groupId);
 769         }
 770         return ids;
 771     }
 772
 773     @Override
 774     public String getGroupName(byte[] groupId) {
 775         GroupInfo group = getGroup(groupId);
 776         if (group == null) {
 777             return "";
 778         } else {
 779             return group.name;
 780         }
 781     }
 782
 783     @Override
 784     public List<String> getGroupMembers(byte[] groupId) {
 785         GroupInfo group = getGroup(groupId);
 786         if (group == null) {
 787             return Collections.emptyList();
 788         } else {
 789             return new ArrayList<>(group.getMembersE164());
 790         }
 791     }
 792
 793     @Override
 794     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException {
 795         if (groupId.length == 0) {
 796             groupId = null;
 797         }
 798         if (name.isEmpty()) {
 799             name = null;
 800         }
 801         if (members.size() == 0) {
 802             members = null;
 803         }
 804         if (avatar.isEmpty()) {
 805             avatar = null;
 806         }
 807         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 808     }
 809
 810     /**
 811      * Change the expiration timer for a contact
 812      */
 813     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) {
 814         ContactInfo c = account.getContactStore().getContact(address);
 815         c.messageExpirationTime = messageExpirationTimer;
 816         account.getContactStore().updateContact(c);
 817     }
 818
 819     /**
 820      * Change the expiration timer for a group
 821      */
 822     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 823         GroupInfo g = account.getGroupStore().getGroup(groupId);
 824         g.messageExpirationTime = messageExpirationTimer;
 825         account.getGroupStore().updateGroup(g);
 826     }
 827
 828     /**
 829      * Upload the sticker pack from path.
 830      *
 831      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 832      * @return if successful, returns the URL to install the sticker pack in the signal app
 833      */
 834     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 835         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 836
 837         SignalServiceMessageSender messageSender = getMessageSender();
 838
 839         byte[] packKey = KeyUtils.createStickerUploadKey();
 840         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 841
 842         try {
 843             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 844                     .toString();
 845         } catch (URISyntaxException e) {
 846             throw new AssertionError(e);
 847         }
 848     }
 849
 850     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 851         ZipFile zip = null;
 852         String rootPath = null;
 853
 854         final File file = new File(path);
 855         if (file.getName().endsWith(".zip")) {
 856             zip = new ZipFile(file);
 857         } else if (file.getName().equals("manifest.json")) {
 858             rootPath = file.getParent();
 859         } else {
 860             throw new StickerPackInvalidException("Could not find manifest.json");
 861         }
 862
 863         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 864
 865         if (pack.stickers == null) {
 866             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 867         }
 868
 869         if (pack.stickers.isEmpty()) {
 870             throw new StickerPackInvalidException("Must include stickers.");
 871         }
 872
 873         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 874         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 875             if (sticker.file == null) {
 876                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 877             }
 878
 879             Pair<InputStream, Long> data;
 880             try {
 881                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 882             } catch (IOException ignored) {
 883                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 884             }
 885
 886             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 887             stickers.add(stickerInfo);
 888         }
 889
 890         StickerInfo cover = null;
 891         if (pack.cover != null) {
 892             if (pack.cover.file == null) {
 893                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 894             }
 895
 896             Pair<InputStream, Long> data;
 897             try {
 898                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 899             } catch (IOException ignored) {
 900                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 901             }
 902
 903             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 904         }
 905
 906         return new SignalServiceStickerManifestUpload(
 907                 pack.title,
 908                 pack.author,
 909                 cover,
 910                 stickers);
 911     }
 912
 913     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 914         InputStream inputStream;
 915         if (zip != null) {
 916             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 917         } else {
 918             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 919         }
 920         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 921     }
 922
 923     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 924         if (zip != null) {
 925             final ZipEntry entry = zip.getEntry(subfile);
 926             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 927         } else {
 928             final File file = new File(rootPath, subfile);
 929             return new Pair<>(new FileInputStream(file), file.length());
 930         }
 931     }
 932
 933     void requestSyncGroups() throws IOException {
 934         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 935         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 936         try {
 937             sendSyncMessage(message);
 938         } catch (UntrustedIdentityException e) {
 939             e.printStackTrace();
 940         }
 941     }
 942
 943     void requestSyncContacts() throws IOException {
 944         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 945         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 946         try {
 947             sendSyncMessage(message);
 948         } catch (UntrustedIdentityException e) {
 949             e.printStackTrace();
 950         }
 951     }
 952
 953     void requestSyncBlocked() throws IOException {
 954         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 955         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 956         try {
 957             sendSyncMessage(message);
 958         } catch (UntrustedIdentityException e) {
 959             e.printStackTrace();
 960         }
 961     }
 962
 963     void requestSyncConfiguration() throws IOException {
 964         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 965         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 966         try {
 967             sendSyncMessage(message);
 968         } catch (UntrustedIdentityException e) {
 969             e.printStackTrace();
 970         }
 971     }
 972
 973     private byte[] getSenderCertificate() {
 974         // TODO support UUID capable sender certificates
 975         // byte[] certificate = accountManager.getSenderCertificate();
 976         byte[] certificate;
 977         try {
 978             certificate = accountManager.getSenderCertificateLegacy();
 979         } catch (IOException e) {
 980             System.err.println("Failed to get sender certificate: " + e);
 981             return null;
 982         }
 983         // TODO cache for a day
 984         return certificate;
 985     }
 986
 987     private byte[] getSelfUnidentifiedAccessKey() {
 988         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 989     }
 990
 991     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
 992         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 993         try {
 994             return new SignalProfile(
 995                     encryptedProfile.getIdentityKey(),
 996                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 997                     encryptedProfile.getAvatar(),
 998                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 999                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
1000             );
1001         } catch (InvalidCiphertextException e) {
1002             return null;
1003         }
1004     }
1005
1006     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
1007         ContactInfo contact = account.getContactStore().getContact(recipient);
1008         if (contact == null || contact.profileKey == null) {
1009             return null;
1010         }
1011         ProfileKey theirProfileKey;
1012         try {
1013             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
1014         } catch (InvalidInputException | IOException e) {
1015             throw new AssertionError(e);
1016         }
1017         SignalProfile targetProfile;
1018         try {
1019             targetProfile = decryptProfile(getRecipientProfile(recipient, Optional.absent()), theirProfileKey);
1020         } catch (IOException e) {
1021             System.err.println("Failed to get recipient profile: " + e);
1022             return null;
1023         }
1024
1025         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
1026             return null;
1027         }
1028
1029         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
1030             return KeyUtils.createUnrestrictedUnidentifiedAccess();
1031         }
1032
1033         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
1034     }
1035
1036     private Optional<UnidentifiedAccessPair> getAccessForSync() {
1037         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1038         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1039
1040         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1041             return Optional.absent();
1042         }
1043
1044         try {
1045             return Optional.of(new UnidentifiedAccessPair(
1046                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1047                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1048             ));
1049         } catch (InvalidCertificateException e) {
1050             return Optional.absent();
1051         }
1052     }
1053
1054     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1055         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1056         for (SignalServiceAddress recipient : recipients) {
1057             result.add(getAccessFor(recipient));
1058         }
1059         return result;
1060     }
1061
1062     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1063         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1064         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1065         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1066
1067         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1068             return Optional.absent();
1069         }
1070
1071         try {
1072             return Optional.of(new UnidentifiedAccessPair(
1073                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1074                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1075             ));
1076         } catch (InvalidCertificateException e) {
1077             return Optional.absent();
1078         }
1079     }
1080
1081     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1082         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1083
1084         if (unidentifiedAccess.isPresent()) {
1085             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1086         }
1087
1088         return Optional.absent();
1089     }
1090
1091     private void sendSyncMessage(SignalServiceSyncMessage message)
1092             throws IOException, UntrustedIdentityException {
1093         SignalServiceMessageSender messageSender = getMessageSender();
1094         try {
1095             messageSender.sendMessage(message, getAccessForSync());
1096         } catch (UntrustedIdentityException e) {
1097             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1098             throw e;
1099         }
1100     }
1101
1102     /**
1103      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1104      */
1105     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1106             throws EncapsulatedExceptions, IOException {
1107         final long timestamp = System.currentTimeMillis();
1108         messageBuilder.withTimestamp(timestamp);
1109         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1110
1111         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1112         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1113         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1114
1115         for (SendMessageResult result : results) {
1116             if (result.isUnregisteredFailure()) {
1117                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1118             } else if (result.isNetworkFailure()) {
1119                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1120             } else if (result.getIdentityFailure() != null) {
1121                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1122             }
1123         }
1124         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1125             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1126         }
1127         return timestamp;
1128     }
1129
1130     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1131         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1132
1133         for (String number : numbers) {
1134             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1135         }
1136         return signalServiceAddresses;
1137     }
1138
1139     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1140             throws IOException {
1141         if (messagePipe == null) {
1142             messagePipe = getMessageReceiver().createMessagePipe();
1143         }
1144         if (unidentifiedMessagePipe == null) {
1145             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1146         }
1147         SignalServiceDataMessage message = null;
1148         try {
1149             SignalServiceMessageSender messageSender = getMessageSender();
1150
1151             message = messageBuilder.build();
1152             if (message.getGroupContext().isPresent()) {
1153                 try {
1154                     final boolean isRecipientUpdate = false;
1155                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1156                     for (SendMessageResult r : result) {
1157                         if (r.getIdentityFailure() != null) {
1158                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1159                         }
1160                     }
1161                     return result;
1162                 } catch (UntrustedIdentityException e) {
1163                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1164                     return Collections.emptyList();
1165                 }
1166             } else if (recipients.size() == 1 && recipients.contains(account.getSelfAddress())) {
1167                 SignalServiceAddress recipient = account.getSelfAddress();
1168                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1169                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1170                         message.getTimestamp(),
1171                         message,
1172                         message.getExpiresInSeconds(),
1173                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1174                         false);
1175                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1176
1177                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1178                 try {
1179                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
1180                 } catch (UntrustedIdentityException e) {
1181                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1182                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
1183                 }
1184                 return results;
1185             } else {
1186                 // Send to all individually, so sync messages are sent correctly
1187                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1188                 for (SignalServiceAddress address : recipients) {
1189                     ContactInfo contact = account.getContactStore().getContact(address);
1190                     if (contact != null) {
1191                         messageBuilder.withExpiration(contact.messageExpirationTime);
1192                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1193                     } else {
1194                         messageBuilder.withExpiration(0);
1195                         messageBuilder.withProfileKey(null);
1196                     }
1197                     message = messageBuilder.build();
1198                     try {
1199                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
1200                         results.add(result);
1201                     } catch (UntrustedIdentityException e) {
1202                         account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1203                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
1204                     }
1205                 }
1206                 return results;
1207             }
1208         } finally {
1209             if (message != null && message.isEndSession()) {
1210                 for (SignalServiceAddress recipient : recipients) {
1211                     handleEndSession(recipient);
1212                 }
1213             }
1214             account.save();
1215         }
1216     }
1217
1218     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1219         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1220         try {
1221             return cipher.decrypt(envelope);
1222         } catch (ProtocolUntrustedIdentityException e) {
1223             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1224                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1225                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1226                 throw identityException;
1227             }
1228             throw new AssertionError(e);
1229         }
1230     }
1231
1232     private void handleEndSession(SignalServiceAddress source) {
1233         account.getSignalProtocolStore().deleteAllSessions(source);
1234     }
1235
1236     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1237         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1238             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1239             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1240             switch (groupInfo.getType()) {
1241                 case UPDATE:
1242                     if (group == null) {
1243                         group = new GroupInfo(groupInfo.getGroupId());
1244                     }
1245
1246                     if (groupInfo.getAvatar().isPresent()) {
1247                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1248                         if (avatar.isPointer()) {
1249                             try {
1250                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1251                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1252                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1253                             }
1254                         }
1255                     }
1256
1257                     if (groupInfo.getName().isPresent()) {
1258                         group.name = groupInfo.getName().get();
1259                     }
1260
1261                     if (groupInfo.getMembers().isPresent()) {
1262                         group.addMembers(groupInfo.getMembers().get()
1263                                 .stream()
1264                                 .map(this::resolveSignalServiceAddress)
1265                                 .collect(Collectors.toSet()));
1266                     }
1267
1268                     account.getGroupStore().updateGroup(group);
1269                     break;
1270                 case DELIVER:
1271                     if (group == null) {
1272                         try {
1273                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1274                         } catch (IOException | EncapsulatedExceptions e) {
1275                             e.printStackTrace();
1276                         }
1277                     }
1278                     break;
1279                 case QUIT:
1280                     if (group != null) {
1281                         group.removeMember(source);
1282                         account.getGroupStore().updateGroup(group);
1283                     }
1284                     break;
1285                 case REQUEST_INFO:
1286                     if (group != null) {
1287                         try {
1288                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1289                         } catch (IOException | EncapsulatedExceptions e) {
1290                             e.printStackTrace();
1291                         } catch (NotAGroupMemberException e) {
1292                             // We have left this group, so don't send a group update message
1293                         }
1294                     }
1295                     break;
1296             }
1297         }
1298         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1299         if (message.isEndSession()) {
1300             handleEndSession(conversationPartnerAddress);
1301         }
1302         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1303             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1304                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1305                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1306                 if (group == null) {
1307                     group = new GroupInfo(groupInfo.getGroupId());
1308                 }
1309                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1310                     group.messageExpirationTime = message.getExpiresInSeconds();
1311                     account.getGroupStore().updateGroup(group);
1312                 }
1313             } else {
1314                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1315                 if (contact == null) {
1316                     contact = new ContactInfo(conversationPartnerAddress);
1317                 }
1318                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1319                     contact.messageExpirationTime = message.getExpiresInSeconds();
1320                     account.getContactStore().updateContact(contact);
1321                 }
1322             }
1323         }
1324         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1325             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1326                 if (attachment.isPointer()) {
1327                     try {
1328                         retrieveAttachment(attachment.asPointer());
1329                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1330                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1331                     }
1332                 }
1333             }
1334         }
1335         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1336             if (source.matches(account.getSelfAddress())) {
1337                 try {
1338                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1339                 } catch (InvalidInputException ignored) {
1340                 }
1341                 ContactInfo contact = account.getContactStore().getContact(source);
1342                 if (contact != null) {
1343                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1344                     account.getContactStore().updateContact(contact);
1345                 }
1346             } else {
1347                 ContactInfo contact = account.getContactStore().getContact(source);
1348                 if (contact == null) {
1349                     contact = new ContactInfo(source);
1350                 }
1351                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1352                 account.getContactStore().updateContact(contact);
1353             }
1354         }
1355         if (message.getPreviews().isPresent()) {
1356             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1357             for (SignalServiceDataMessage.Preview preview : previews) {
1358                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1359                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1360                     try {
1361                         retrieveAttachment(attachment);
1362                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1363                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1364                     }
1365                 }
1366             }
1367         }
1368     }
1369
1370     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1371         final File cachePath = new File(getMessageCachePath());
1372         if (!cachePath.exists()) {
1373             return;
1374         }
1375         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1376             if (!dir.isDirectory()) {
1377                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1378                 continue;
1379             }
1380
1381             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1382                 if (!fileEntry.isFile()) {
1383                     continue;
1384                 }
1385                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1386             }
1387             // Try to delete directory if empty
1388             dir.delete();
1389         }
1390     }
1391
1392     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1393         SignalServiceEnvelope envelope;
1394         try {
1395             envelope = Utils.loadEnvelope(fileEntry);
1396             if (envelope == null) {
1397                 return;
1398             }
1399         } catch (IOException e) {
1400             e.printStackTrace();
1401             return;
1402         }
1403         SignalServiceContent content = null;
1404         if (!envelope.isReceipt()) {
1405             try {
1406                 content = decryptMessage(envelope);
1407             } catch (Exception e) {
1408                 return;
1409             }
1410             handleMessage(envelope, content, ignoreAttachments);
1411         }
1412         account.save();
1413         handler.handleMessage(envelope, content, null);
1414         try {
1415             Files.delete(fileEntry.toPath());
1416         } catch (IOException e) {
1417             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1418         }
1419     }
1420
1421     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1422         retryFailedReceivedMessages(handler, ignoreAttachments);
1423         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1424
1425         if (messagePipe == null) {
1426             messagePipe = messageReceiver.createMessagePipe();
1427         }
1428
1429         while (true) {
1430             SignalServiceEnvelope envelope;
1431             SignalServiceContent content = null;
1432             Exception exception = null;
1433             final long now = new Date().getTime();
1434             try {
1435                 envelope = messagePipe.read(timeout, unit, envelope1 -> {
1436                     // store message on disk, before acknowledging receipt to the server
1437                     try {
1438                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1439                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1440                         Utils.storeEnvelope(envelope1, cacheFile);
1441                     } catch (IOException e) {
1442                         System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1443                     }
1444                 });
1445             } catch (TimeoutException e) {
1446                 if (returnOnTimeout)
1447                     return;
1448                 continue;
1449             } catch (InvalidVersionException e) {
1450                 System.err.println("Ignoring error: " + e.getMessage());
1451                 continue;
1452             }
1453             if (!envelope.isReceipt()) {
1454                 try {
1455                     content = decryptMessage(envelope);
1456                 } catch (Exception e) {
1457                     exception = e;
1458                 }
1459                 handleMessage(envelope, content, ignoreAttachments);
1460             }
1461             account.save();
1462             if (!isMessageBlocked(envelope, content)) {
1463                 handler.handleMessage(envelope, content, exception);
1464             }
1465             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1466                 File cacheFile = null;
1467                 try {
1468                     cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1469                     Files.delete(cacheFile.toPath());
1470                     // Try to delete directory if empty
1471                     new File(getMessageCachePath()).delete();
1472                 } catch (IOException e) {
1473                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1474                 }
1475             }
1476         }
1477     }
1478
1479     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1480         SignalServiceAddress source;
1481         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1482             source = envelope.getSourceAddress();
1483         } else if (content != null) {
1484             source = content.getSender();
1485         } else {
1486             return false;
1487         }
1488         ContactInfo sourceContact = account.getContactStore().getContact(source);
1489         if (sourceContact != null && sourceContact.blocked) {
1490             return true;
1491         }
1492
1493         if (content != null && content.getDataMessage().isPresent()) {
1494             SignalServiceDataMessage message = content.getDataMessage().get();
1495             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1496                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1497                 GroupInfo group = getGroup(groupInfo.getGroupId());
1498                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1499                     return true;
1500                 }
1501             }
1502         }
1503         return false;
1504     }
1505
1506     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1507         if (content != null) {
1508             SignalServiceAddress sender;
1509             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1510                 sender = envelope.getSourceAddress();
1511             } else {
1512                 sender = content.getSender();
1513             }
1514             if (content.getDataMessage().isPresent()) {
1515                 SignalServiceDataMessage message = content.getDataMessage().get();
1516
1517                 if (content.isNeedsReceipt()) {
1518                     try {
1519                         sendReceipt(sender, message.getTimestamp());
1520                     } catch (IOException | UntrustedIdentityException | IllegalArgumentException e) {
1521                         e.printStackTrace();
1522                     }
1523                 }
1524
1525                 handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments);
1526             }
1527             if (content.getSyncMessage().isPresent()) {
1528                 account.setMultiDevice(true);
1529                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1530                 if (syncMessage.getSent().isPresent()) {
1531                     SentTranscriptMessage message = syncMessage.getSent().get();
1532                     handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments);
1533                 }
1534                 if (syncMessage.getRequest().isPresent()) {
1535                     RequestMessage rm = syncMessage.getRequest().get();
1536                     if (rm.isContactsRequest()) {
1537                         try {
1538                             sendContacts();
1539                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1540                             e.printStackTrace();
1541                         }
1542                     }
1543                     if (rm.isGroupsRequest()) {
1544                         try {
1545                             sendGroups();
1546                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1547                             e.printStackTrace();
1548                         }
1549                     }
1550                     if (rm.isBlockedListRequest()) {
1551                         try {
1552                             sendBlockedList();
1553                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1554                             e.printStackTrace();
1555                         }
1556                     }
1557                     // TODO Handle rm.isConfigurationRequest();
1558                 }
1559                 if (syncMessage.getGroups().isPresent()) {
1560                     File tmpFile = null;
1561                     try {
1562                         tmpFile = IOUtils.createTempFile();
1563                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1564                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1565                             DeviceGroup g;
1566                             while ((g = s.read()) != null) {
1567                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1568                                 if (syncGroup == null) {
1569                                     syncGroup = new GroupInfo(g.getId());
1570                                 }
1571                                 if (g.getName().isPresent()) {
1572                                     syncGroup.name = g.getName().get();
1573                                 }
1574                                 syncGroup.addMembers(g.getMembers()
1575                                         .stream()
1576                                         .map(this::resolveSignalServiceAddress)
1577                                         .collect(Collectors.toSet()));
1578                                 if (!g.isActive()) {
1579                                     syncGroup.removeMember(account.getSelfAddress());
1580                                 } else {
1581                                     // Add ourself to the member set as it's marked as active
1582                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1583                                 }
1584                                 syncGroup.blocked = g.isBlocked();
1585                                 if (g.getColor().isPresent()) {
1586                                     syncGroup.color = g.getColor().get();
1587                                 }
1588
1589                                 if (g.getAvatar().isPresent()) {
1590                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1591                                 }
1592                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1593                                 syncGroup.archived = g.isArchived();
1594                                 account.getGroupStore().updateGroup(syncGroup);
1595                             }
1596                         }
1597                     } catch (Exception e) {
1598                         e.printStackTrace();
1599                     } finally {
1600                         if (tmpFile != null) {
1601                             try {
1602                                 Files.delete(tmpFile.toPath());
1603                             } catch (IOException e) {
1604                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1605                             }
1606                         }
1607                     }
1608                 }
1609                 if (syncMessage.getBlockedList().isPresent()) {
1610                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1611                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1612                         setContactBlocked(resolveSignalServiceAddress(address), true);
1613                     }
1614                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1615                         try {
1616                             setGroupBlocked(groupId, true);
1617                         } catch (GroupNotFoundException e) {
1618                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1619                         }
1620                     }
1621                 }
1622                 if (syncMessage.getContacts().isPresent()) {
1623                     File tmpFile = null;
1624                     try {
1625                         tmpFile = IOUtils.createTempFile();
1626                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1627                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1628                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1629                             if (contactsMessage.isComplete()) {
1630                                 account.getContactStore().clear();
1631                             }
1632                             DeviceContact c;
1633                             while ((c = s.read()) != null) {
1634                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1635                                     account.setProfileKey(c.getProfileKey().get());
1636                                 }
1637                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1638                                 ContactInfo contact = account.getContactStore().getContact(address);
1639                                 if (contact == null) {
1640                                     contact = new ContactInfo(address);
1641                                 }
1642                                 if (c.getName().isPresent()) {
1643                                     contact.name = c.getName().get();
1644                                 }
1645                                 if (c.getColor().isPresent()) {
1646                                     contact.color = c.getColor().get();
1647                                 }
1648                                 if (c.getProfileKey().isPresent()) {
1649                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1650                                 }
1651                                 if (c.getVerified().isPresent()) {
1652                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1653                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1654                                 }
1655                                 if (c.getExpirationTimer().isPresent()) {
1656                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1657                                 }
1658                                 contact.blocked = c.isBlocked();
1659                                 contact.inboxPosition = c.getInboxPosition().orNull();
1660                                 contact.archived = c.isArchived();
1661                                 account.getContactStore().updateContact(contact);
1662
1663                                 if (c.getAvatar().isPresent()) {
1664                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1665                                 }
1666                             }
1667                         }
1668                     } catch (Exception e) {
1669                         e.printStackTrace();
1670                     } finally {
1671                         if (tmpFile != null) {
1672                             try {
1673                                 Files.delete(tmpFile.toPath());
1674                             } catch (IOException e) {
1675                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1676                             }
1677                         }
1678                     }
1679                 }
1680                 if (syncMessage.getVerified().isPresent()) {
1681                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1682                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1683                 }
1684                 if (syncMessage.getConfiguration().isPresent()) {
1685                     // TODO
1686                 }
1687             }
1688         }
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     @Override
1773     public boolean isRemote() {
1774         return false;
1775     }
1776
1777     @Override
1778     public String getObjectPath() {
1779         return null;
1780     }
1781
1782     private void sendGroups() throws IOException, UntrustedIdentityException {
1783         File groupsFile = IOUtils.createTempFile();
1784
1785         try {
1786             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1787                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1788                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1789                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1790                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1791                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1792                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1793                 }
1794             }
1795
1796             if (groupsFile.exists() && groupsFile.length() > 0) {
1797                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1798                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1799                             .withStream(groupsFileStream)
1800                             .withContentType("application/octet-stream")
1801                             .withLength(groupsFile.length())
1802                             .build();
1803
1804                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1805                 }
1806             }
1807         } finally {
1808             try {
1809                 Files.delete(groupsFile.toPath());
1810             } catch (IOException e) {
1811                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1812             }
1813         }
1814     }
1815
1816     public void sendContacts() throws IOException, UntrustedIdentityException {
1817         File contactsFile = IOUtils.createTempFile();
1818
1819         try {
1820             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1821                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1822                 for (ContactInfo record : account.getContactStore().getContacts()) {
1823                     VerifiedMessage verifiedMessage = null;
1824                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1825                     if (currentIdentity != null) {
1826                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1827                     }
1828
1829                     ProfileKey profileKey = null;
1830                     try {
1831                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1832                     } catch (InvalidInputException ignored) {
1833                     }
1834                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1835                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1836                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1837                             Optional.of(record.messageExpirationTime),
1838                             Optional.fromNullable(record.inboxPosition), record.archived));
1839                 }
1840
1841                 if (account.getProfileKey() != null) {
1842                     // Send our own profile key as well
1843                     out.write(new DeviceContact(account.getSelfAddress(),
1844                             Optional.absent(), Optional.absent(),
1845                             Optional.absent(), Optional.absent(),
1846                             Optional.of(account.getProfileKey()),
1847                             false, Optional.absent(), Optional.absent(), false));
1848                 }
1849             }
1850
1851             if (contactsFile.exists() && contactsFile.length() > 0) {
1852                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1853                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1854                             .withStream(contactsFileStream)
1855                             .withContentType("application/octet-stream")
1856                             .withLength(contactsFile.length())
1857                             .build();
1858
1859                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1860                 }
1861             }
1862         } finally {
1863             try {
1864                 Files.delete(contactsFile.toPath());
1865             } catch (IOException e) {
1866                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1867             }
1868         }
1869     }
1870
1871     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1872         List<SignalServiceAddress> addresses = new ArrayList<>();
1873         for (ContactInfo record : account.getContactStore().getContacts()) {
1874             if (record.blocked) {
1875                 addresses.add(record.getAddress());
1876             }
1877         }
1878         List<byte[]> groupIds = new ArrayList<>();
1879         for (GroupInfo record : account.getGroupStore().getGroups()) {
1880             if (record.blocked) {
1881                 groupIds.add(record.groupId);
1882             }
1883         }
1884         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1885     }
1886
1887     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1888         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1889         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1890     }
1891
1892     public List<ContactInfo> getContacts() {
1893         return account.getContactStore().getContacts();
1894     }
1895
1896     public ContactInfo getContact(String number) {
1897         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1898     }
1899
1900     public GroupInfo getGroup(byte[] groupId) {
1901         return account.getGroupStore().getGroup(groupId);
1902     }
1903
1904     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1905         return account.getSignalProtocolStore().getIdentities();
1906     }
1907
1908     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1909         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1910     }
1911
1912     /**
1913      * Trust this the identity with this fingerprint
1914      *
1915      * @param name        username of the identity
1916      * @param fingerprint Fingerprint
1917      */
1918     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1919         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1920         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1921         if (ids == null) {
1922             return false;
1923         }
1924         for (JsonIdentityKeyStore.Identity id : ids) {
1925             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1926                 continue;
1927             }
1928
1929             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1930             try {
1931                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1932             } catch (IOException | UntrustedIdentityException e) {
1933                 e.printStackTrace();
1934             }
1935             account.save();
1936             return true;
1937         }
1938         return false;
1939     }
1940
1941     /**
1942      * Trust this the identity with this safety number
1943      *
1944      * @param name         username of the identity
1945      * @param safetyNumber Safety number
1946      */
1947     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1948         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1949         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1950         if (ids == null) {
1951             return false;
1952         }
1953         for (JsonIdentityKeyStore.Identity id : ids) {
1954             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1955                 continue;
1956             }
1957
1958             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1959             try {
1960                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1961             } catch (IOException | UntrustedIdentityException e) {
1962                 e.printStackTrace();
1963             }
1964             account.save();
1965             return true;
1966         }
1967         return false;
1968     }
1969
1970     /**
1971      * Trust all keys of this identity without verification
1972      *
1973      * @param name username of the identity
1974      */
1975     public boolean trustIdentityAllKeys(String name) {
1976         SignalServiceAddress address = resolveSignalServiceAddress(name);
1977         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1978         if (ids == null) {
1979             return false;
1980         }
1981         for (JsonIdentityKeyStore.Identity id : ids) {
1982             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1983                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1984                 try {
1985                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1986                 } catch (IOException | UntrustedIdentityException e) {
1987                     e.printStackTrace();
1988                 }
1989             }
1990         }
1991         account.save();
1992         return true;
1993     }
1994
1995     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
1996         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), theirAddress, theirIdentityKey);
1997     }
1998
1999     void saveAccount() {
2000         account.save();
2001     }
2002
2003     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2004         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
2005         return resolveSignalServiceAddress(canonicalizedNumber);
2006     }
2007
2008     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2009         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2010
2011         return resolveSignalServiceAddress(address);
2012     }
2013
2014     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2015         if (address.matches(account.getSelfAddress())) {
2016             return account.getSelfAddress();
2017         }
2018
2019         return account.getRecipientStore().resolveServiceAddress(address);
2020     }
2021
2022     @Override
2023     public void close() throws IOException {
2024         if (messagePipe != null) {
2025             messagePipe.shutdown();
2026             messagePipe = null;
2027         }
2028
2029         if (unidentifiedMessagePipe != null) {
2030             unidentifiedMessagePipe.shutdown();
2031             unidentifiedMessagePipe = null;
2032         }
2033
2034         account.close();
2035     }
2036
2037     public interface ReceiveMessageHandler {
2038
2039         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2040     }
2041 }