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

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