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         ContactInfo contact = account.getContactStore().getContact(address);
 763         contact.messageExpirationTime = messageExpirationTimer;
 764         account.getContactStore().updateContact(contact);
 765         sendExpirationTimerUpdate(address);
 766         account.save();
 767     }
 768
 769     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
 770         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 771                 .asExpirationUpdate();
 772         sendMessage(messageBuilder, Collections.singleton(address));
 773     }
 774
 775     /**
 776      * Change the expiration timer for a contact
 777      */
 778     public void setExpirationTimer(String number, int messageExpirationTimer) throws IOException, InvalidNumberException {
 779         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 780         setExpirationTimer(address, messageExpirationTimer);
 781     }
 782
 783     /**
 784      * Change the expiration timer for a group
 785      */
 786     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 787         GroupInfo g = account.getGroupStore().getGroup(groupId);
 788         g.messageExpirationTime = messageExpirationTimer;
 789         account.getGroupStore().updateGroup(g);
 790     }
 791
 792     /**
 793      * Upload the sticker pack from path.
 794      *
 795      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 796      * @return if successful, returns the URL to install the sticker pack in the signal app
 797      */
 798     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 799         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 800
 801         SignalServiceMessageSender messageSender = getMessageSender();
 802
 803         byte[] packKey = KeyUtils.createStickerUploadKey();
 804         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 805
 806         try {
 807             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 808                     .toString();
 809         } catch (URISyntaxException e) {
 810             throw new AssertionError(e);
 811         }
 812     }
 813
 814     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 815         ZipFile zip = null;
 816         String rootPath = null;
 817
 818         final File file = new File(path);
 819         if (file.getName().endsWith(".zip")) {
 820             zip = new ZipFile(file);
 821         } else if (file.getName().equals("manifest.json")) {
 822             rootPath = file.getParent();
 823         } else {
 824             throw new StickerPackInvalidException("Could not find manifest.json");
 825         }
 826
 827         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 828
 829         if (pack.stickers == null) {
 830             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 831         }
 832
 833         if (pack.stickers.isEmpty()) {
 834             throw new StickerPackInvalidException("Must include stickers.");
 835         }
 836
 837         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 838         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 839             if (sticker.file == null) {
 840                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 841             }
 842
 843             Pair<InputStream, Long> data;
 844             try {
 845                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 846             } catch (IOException ignored) {
 847                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 848             }
 849
 850             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 851             stickers.add(stickerInfo);
 852         }
 853
 854         StickerInfo cover = null;
 855         if (pack.cover != null) {
 856             if (pack.cover.file == null) {
 857                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 858             }
 859
 860             Pair<InputStream, Long> data;
 861             try {
 862                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 863             } catch (IOException ignored) {
 864                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 865             }
 866
 867             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 868         }
 869
 870         return new SignalServiceStickerManifestUpload(
 871                 pack.title,
 872                 pack.author,
 873                 cover,
 874                 stickers);
 875     }
 876
 877     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 878         InputStream inputStream;
 879         if (zip != null) {
 880             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 881         } else {
 882             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 883         }
 884         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 885     }
 886
 887     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 888         if (zip != null) {
 889             final ZipEntry entry = zip.getEntry(subfile);
 890             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 891         } else {
 892             final File file = new File(rootPath, subfile);
 893             return new Pair<>(new FileInputStream(file), file.length());
 894         }
 895     }
 896
 897     void requestSyncGroups() throws IOException {
 898         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 899         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 900         try {
 901             sendSyncMessage(message);
 902         } catch (UntrustedIdentityException e) {
 903             e.printStackTrace();
 904         }
 905     }
 906
 907     void requestSyncContacts() throws IOException {
 908         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 909         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 910         try {
 911             sendSyncMessage(message);
 912         } catch (UntrustedIdentityException e) {
 913             e.printStackTrace();
 914         }
 915     }
 916
 917     void requestSyncBlocked() throws IOException {
 918         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 919         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 920         try {
 921             sendSyncMessage(message);
 922         } catch (UntrustedIdentityException e) {
 923             e.printStackTrace();
 924         }
 925     }
 926
 927     void requestSyncConfiguration() throws IOException {
 928         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 929         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 930         try {
 931             sendSyncMessage(message);
 932         } catch (UntrustedIdentityException e) {
 933             e.printStackTrace();
 934         }
 935     }
 936
 937     private byte[] getSenderCertificate() {
 938         // TODO support UUID capable sender certificates
 939         // byte[] certificate = accountManager.getSenderCertificate();
 940         byte[] certificate;
 941         try {
 942             certificate = accountManager.getSenderCertificateLegacy();
 943         } catch (IOException e) {
 944             System.err.println("Failed to get sender certificate: " + e);
 945             return null;
 946         }
 947         // TODO cache for a day
 948         return certificate;
 949     }
 950
 951     private byte[] getSelfUnidentifiedAccessKey() {
 952         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 953     }
 954
 955     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
 956         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 957         try {
 958             return new SignalProfile(
 959                     encryptedProfile.getIdentityKey(),
 960                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 961                     encryptedProfile.getAvatar(),
 962                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 963                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
 964             );
 965         } catch (InvalidCiphertextException e) {
 966             return null;
 967         }
 968     }
 969
 970     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 971         ContactInfo contact = account.getContactStore().getContact(recipient);
 972         if (contact == null || contact.profileKey == null) {
 973             return null;
 974         }
 975         ProfileKey theirProfileKey;
 976         try {
 977             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
 978         } catch (InvalidInputException | IOException e) {
 979             throw new AssertionError(e);
 980         }
 981         SignalProfile targetProfile;
 982         try {
 983             targetProfile = decryptProfile(getRecipientProfile(recipient, Optional.absent()), theirProfileKey);
 984         } catch (IOException e) {
 985             System.err.println("Failed to get recipient profile: " + e);
 986             return null;
 987         }
 988
 989         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
 990             return null;
 991         }
 992
 993         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
 994             return KeyUtils.createUnrestrictedUnidentifiedAccess();
 995         }
 996
 997         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
 998     }
 999
1000     private Optional<UnidentifiedAccessPair> getAccessForSync() {
1001         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1002         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1003
1004         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1005             return Optional.absent();
1006         }
1007
1008         try {
1009             return Optional.of(new UnidentifiedAccessPair(
1010                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1011                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1012             ));
1013         } catch (InvalidCertificateException e) {
1014             return Optional.absent();
1015         }
1016     }
1017
1018     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1019         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1020         for (SignalServiceAddress recipient : recipients) {
1021             result.add(getAccessFor(recipient));
1022         }
1023         return result;
1024     }
1025
1026     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1027         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1028         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1029         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1030
1031         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1032             return Optional.absent();
1033         }
1034
1035         try {
1036             return Optional.of(new UnidentifiedAccessPair(
1037                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1038                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1039             ));
1040         } catch (InvalidCertificateException e) {
1041             return Optional.absent();
1042         }
1043     }
1044
1045     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1046         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1047
1048         if (unidentifiedAccess.isPresent()) {
1049             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1050         }
1051
1052         return Optional.absent();
1053     }
1054
1055     private void sendSyncMessage(SignalServiceSyncMessage message)
1056             throws IOException, UntrustedIdentityException {
1057         SignalServiceMessageSender messageSender = getMessageSender();
1058         try {
1059             messageSender.sendMessage(message, getAccessForSync());
1060         } catch (UntrustedIdentityException e) {
1061             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1062             throw e;
1063         }
1064     }
1065
1066     /**
1067      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1068      */
1069     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1070             throws EncapsulatedExceptions, IOException {
1071         final long timestamp = System.currentTimeMillis();
1072         messageBuilder.withTimestamp(timestamp);
1073         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1074
1075         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1076         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1077         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1078
1079         for (SendMessageResult result : results) {
1080             if (result.isUnregisteredFailure()) {
1081                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1082             } else if (result.isNetworkFailure()) {
1083                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1084             } else if (result.getIdentityFailure() != null) {
1085                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1086             }
1087         }
1088         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1089             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1090         }
1091         return timestamp;
1092     }
1093
1094     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1095         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1096
1097         for (String number : numbers) {
1098             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1099         }
1100         return signalServiceAddresses;
1101     }
1102
1103     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1104             throws IOException {
1105         if (messagePipe == null) {
1106             messagePipe = getMessageReceiver().createMessagePipe();
1107         }
1108         if (unidentifiedMessagePipe == null) {
1109             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1110         }
1111         SignalServiceDataMessage message = null;
1112         try {
1113             message = messageBuilder.build();
1114             if (message.getGroupContext().isPresent()) {
1115                 try {
1116                     SignalServiceMessageSender messageSender = getMessageSender();
1117                     final boolean isRecipientUpdate = false;
1118                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1119                     for (SendMessageResult r : result) {
1120                         if (r.getIdentityFailure() != null) {
1121                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1122                         }
1123                     }
1124                     return result;
1125                 } catch (UntrustedIdentityException e) {
1126                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1127                     return Collections.emptyList();
1128                 }
1129             } else {
1130                 // Send to all individually, so sync messages are sent correctly
1131                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1132                 for (SignalServiceAddress address : recipients) {
1133                     ContactInfo contact = account.getContactStore().getContact(address);
1134                     if (contact != null) {
1135                         messageBuilder.withExpiration(contact.messageExpirationTime);
1136                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1137                     } else {
1138                         messageBuilder.withExpiration(0);
1139                         messageBuilder.withProfileKey(null);
1140                     }
1141                     message = messageBuilder.build();
1142                     if (address.matches(account.getSelfAddress())) {
1143                         results.add(sendSelfMessage(message));
1144                     } else {
1145                         results.add(sendMessage(address, message));
1146                     }
1147                 }
1148                 return results;
1149             }
1150         } finally {
1151             if (message != null && message.isEndSession()) {
1152                 for (SignalServiceAddress recipient : recipients) {
1153                     handleEndSession(recipient);
1154                 }
1155             }
1156             account.save();
1157         }
1158     }
1159
1160     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1161         SignalServiceMessageSender messageSender = getMessageSender();
1162
1163         SignalServiceAddress recipient = account.getSelfAddress();
1164
1165         final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1166         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1167                 message.getTimestamp(),
1168                 message,
1169                 message.getExpiresInSeconds(),
1170                 Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1171                 false);
1172         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1173
1174         try {
1175             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1176             return SendMessageResult.success(recipient, unidentifiedAccess.isPresent(), false);
1177         } catch (UntrustedIdentityException e) {
1178             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1179             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1180         }
1181     }
1182
1183     private SendMessageResult sendMessage(SignalServiceAddress address, SignalServiceDataMessage message) throws IOException {
1184         SignalServiceMessageSender messageSender = getMessageSender();
1185
1186         try {
1187             return messageSender.sendMessage(address, getAccessFor(address), message);
1188         } catch (UntrustedIdentityException e) {
1189             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1190             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1191         }
1192     }
1193
1194     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1195         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1196         try {
1197             return cipher.decrypt(envelope);
1198         } catch (ProtocolUntrustedIdentityException e) {
1199             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1200                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1201                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1202                 throw identityException;
1203             }
1204             throw new AssertionError(e);
1205         }
1206     }
1207
1208     private void handleEndSession(SignalServiceAddress source) {
1209         account.getSignalProtocolStore().deleteAllSessions(source);
1210     }
1211
1212     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1213         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1214             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1215             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1216             switch (groupInfo.getType()) {
1217                 case UPDATE:
1218                     if (group == null) {
1219                         group = new GroupInfo(groupInfo.getGroupId());
1220                     }
1221
1222                     if (groupInfo.getAvatar().isPresent()) {
1223                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1224                         if (avatar.isPointer()) {
1225                             try {
1226                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1227                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1228                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1229                             }
1230                         }
1231                     }
1232
1233                     if (groupInfo.getName().isPresent()) {
1234                         group.name = groupInfo.getName().get();
1235                     }
1236
1237                     if (groupInfo.getMembers().isPresent()) {
1238                         group.addMembers(groupInfo.getMembers().get()
1239                                 .stream()
1240                                 .map(this::resolveSignalServiceAddress)
1241                                 .collect(Collectors.toSet()));
1242                     }
1243
1244                     account.getGroupStore().updateGroup(group);
1245                     break;
1246                 case DELIVER:
1247                     if (group == null) {
1248                         try {
1249                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1250                         } catch (IOException | EncapsulatedExceptions e) {
1251                             e.printStackTrace();
1252                         }
1253                     }
1254                     break;
1255                 case QUIT:
1256                     if (group != null) {
1257                         group.removeMember(source);
1258                         account.getGroupStore().updateGroup(group);
1259                     }
1260                     break;
1261                 case REQUEST_INFO:
1262                     if (group != null) {
1263                         try {
1264                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1265                         } catch (IOException | EncapsulatedExceptions | AttachmentInvalidException e) {
1266                             e.printStackTrace();
1267                         } catch (GroupNotFoundException | NotAGroupMemberException e) {
1268                             // We have left this group, so don't send a group update message
1269                         }
1270                     }
1271                     break;
1272             }
1273         }
1274         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1275         if (message.isEndSession()) {
1276             handleEndSession(conversationPartnerAddress);
1277         }
1278         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1279             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1280                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1281                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1282                 if (group == null) {
1283                     group = new GroupInfo(groupInfo.getGroupId());
1284                 }
1285                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1286                     group.messageExpirationTime = message.getExpiresInSeconds();
1287                     account.getGroupStore().updateGroup(group);
1288                 }
1289             } else {
1290                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1291                 if (contact == null) {
1292                     contact = new ContactInfo(conversationPartnerAddress);
1293                 }
1294                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1295                     contact.messageExpirationTime = message.getExpiresInSeconds();
1296                     account.getContactStore().updateContact(contact);
1297                 }
1298             }
1299         }
1300         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1301             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1302                 if (attachment.isPointer()) {
1303                     try {
1304                         retrieveAttachment(attachment.asPointer());
1305                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1306                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1307                     }
1308                 }
1309             }
1310         }
1311         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1312             if (source.matches(account.getSelfAddress())) {
1313                 try {
1314                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1315                 } catch (InvalidInputException ignored) {
1316                 }
1317                 ContactInfo contact = account.getContactStore().getContact(source);
1318                 if (contact != null) {
1319                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1320                     account.getContactStore().updateContact(contact);
1321                 }
1322             } else {
1323                 ContactInfo contact = account.getContactStore().getContact(source);
1324                 if (contact == null) {
1325                     contact = new ContactInfo(source);
1326                 }
1327                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1328                 account.getContactStore().updateContact(contact);
1329             }
1330         }
1331         if (message.getPreviews().isPresent()) {
1332             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1333             for (SignalServiceDataMessage.Preview preview : previews) {
1334                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1335                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1336                     try {
1337                         retrieveAttachment(attachment);
1338                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1339                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1340                     }
1341                 }
1342             }
1343         }
1344     }
1345
1346     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1347         final File cachePath = new File(getMessageCachePath());
1348         if (!cachePath.exists()) {
1349             return;
1350         }
1351         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1352             if (!dir.isDirectory()) {
1353                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1354                 continue;
1355             }
1356
1357             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1358                 if (!fileEntry.isFile()) {
1359                     continue;
1360                 }
1361                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1362             }
1363             // Try to delete directory if empty
1364             dir.delete();
1365         }
1366     }
1367
1368     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1369         SignalServiceEnvelope envelope;
1370         try {
1371             envelope = Utils.loadEnvelope(fileEntry);
1372             if (envelope == null) {
1373                 return;
1374             }
1375         } catch (IOException e) {
1376             e.printStackTrace();
1377             return;
1378         }
1379         SignalServiceContent content = null;
1380         if (!envelope.isReceipt()) {
1381             try {
1382                 content = decryptMessage(envelope);
1383             } catch (Exception e) {
1384                 return;
1385             }
1386             handleMessage(envelope, content, ignoreAttachments);
1387         }
1388         account.save();
1389         handler.handleMessage(envelope, content, null);
1390         try {
1391             Files.delete(fileEntry.toPath());
1392         } catch (IOException e) {
1393             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1394         }
1395     }
1396
1397     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1398         retryFailedReceivedMessages(handler, ignoreAttachments);
1399         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1400
1401         if (messagePipe == null) {
1402             messagePipe = messageReceiver.createMessagePipe();
1403         }
1404
1405         while (true) {
1406             SignalServiceEnvelope envelope;
1407             SignalServiceContent content = null;
1408             Exception exception = null;
1409             final long now = new Date().getTime();
1410             try {
1411                 envelope = messagePipe.read(timeout, unit, envelope1 -> {
1412                     // store message on disk, before acknowledging receipt to the server
1413                     try {
1414                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1415                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1416                         Utils.storeEnvelope(envelope1, cacheFile);
1417                     } catch (IOException e) {
1418                         System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1419                     }
1420                 });
1421             } catch (TimeoutException e) {
1422                 if (returnOnTimeout)
1423                     return;
1424                 continue;
1425             } catch (InvalidVersionException e) {
1426                 System.err.println("Ignoring error: " + e.getMessage());
1427                 continue;
1428             }
1429             if (envelope.hasSource()) {
1430                 // Store uuid if we don't have it already
1431                 SignalServiceAddress source = envelope.getSourceAddress();
1432                 resolveSignalServiceAddress(source);
1433             }
1434             if (!envelope.isReceipt()) {
1435                 try {
1436                     content = decryptMessage(envelope);
1437                 } catch (Exception e) {
1438                     exception = e;
1439                 }
1440                 handleMessage(envelope, content, ignoreAttachments);
1441             }
1442             account.save();
1443             if (!isMessageBlocked(envelope, content)) {
1444                 handler.handleMessage(envelope, content, exception);
1445             }
1446             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1447                 File cacheFile = null;
1448                 try {
1449                     cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1450                     Files.delete(cacheFile.toPath());
1451                     // Try to delete directory if empty
1452                     new File(getMessageCachePath()).delete();
1453                 } catch (IOException e) {
1454                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1455                 }
1456             }
1457         }
1458     }
1459
1460     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1461         SignalServiceAddress source;
1462         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1463             source = envelope.getSourceAddress();
1464         } else if (content != null) {
1465             source = content.getSender();
1466         } else {
1467             return false;
1468         }
1469         ContactInfo sourceContact = account.getContactStore().getContact(source);
1470         if (sourceContact != null && sourceContact.blocked) {
1471             return true;
1472         }
1473
1474         if (content != null && content.getDataMessage().isPresent()) {
1475             SignalServiceDataMessage message = content.getDataMessage().get();
1476             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1477                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1478                 GroupInfo group = getGroup(groupInfo.getGroupId());
1479                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1480                     return true;
1481                 }
1482             }
1483         }
1484         return false;
1485     }
1486
1487     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1488         if (content != null) {
1489             SignalServiceAddress sender;
1490             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1491                 sender = envelope.getSourceAddress();
1492             } else {
1493                 sender = content.getSender();
1494             }
1495             // Store uuid if we don't have it already
1496             resolveSignalServiceAddress(sender);
1497
1498             if (content.getDataMessage().isPresent()) {
1499                 SignalServiceDataMessage message = content.getDataMessage().get();
1500
1501                 if (content.isNeedsReceipt()) {
1502                     try {
1503                         sendReceipt(sender, message.getTimestamp());
1504                     } catch (IOException | UntrustedIdentityException | IllegalArgumentException e) {
1505                         e.printStackTrace();
1506                     }
1507                 }
1508
1509                 handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments);
1510             }
1511             if (content.getSyncMessage().isPresent()) {
1512                 account.setMultiDevice(true);
1513                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1514                 if (syncMessage.getSent().isPresent()) {
1515                     SentTranscriptMessage message = syncMessage.getSent().get();
1516                     handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments);
1517                 }
1518                 if (syncMessage.getRequest().isPresent()) {
1519                     RequestMessage rm = syncMessage.getRequest().get();
1520                     if (rm.isContactsRequest()) {
1521                         try {
1522                             sendContacts();
1523                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1524                             e.printStackTrace();
1525                         }
1526                     }
1527                     if (rm.isGroupsRequest()) {
1528                         try {
1529                             sendGroups();
1530                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1531                             e.printStackTrace();
1532                         }
1533                     }
1534                     if (rm.isBlockedListRequest()) {
1535                         try {
1536                             sendBlockedList();
1537                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1538                             e.printStackTrace();
1539                         }
1540                     }
1541                     // TODO Handle rm.isConfigurationRequest();
1542                 }
1543                 if (syncMessage.getGroups().isPresent()) {
1544                     File tmpFile = null;
1545                     try {
1546                         tmpFile = IOUtils.createTempFile();
1547                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1548                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1549                             DeviceGroup g;
1550                             while ((g = s.read()) != null) {
1551                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1552                                 if (syncGroup == null) {
1553                                     syncGroup = new GroupInfo(g.getId());
1554                                 }
1555                                 if (g.getName().isPresent()) {
1556                                     syncGroup.name = g.getName().get();
1557                                 }
1558                                 syncGroup.addMembers(g.getMembers()
1559                                         .stream()
1560                                         .map(this::resolveSignalServiceAddress)
1561                                         .collect(Collectors.toSet()));
1562                                 if (!g.isActive()) {
1563                                     syncGroup.removeMember(account.getSelfAddress());
1564                                 } else {
1565                                     // Add ourself to the member set as it's marked as active
1566                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1567                                 }
1568                                 syncGroup.blocked = g.isBlocked();
1569                                 if (g.getColor().isPresent()) {
1570                                     syncGroup.color = g.getColor().get();
1571                                 }
1572
1573                                 if (g.getAvatar().isPresent()) {
1574                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1575                                 }
1576                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1577                                 syncGroup.archived = g.isArchived();
1578                                 account.getGroupStore().updateGroup(syncGroup);
1579                             }
1580                         }
1581                     } catch (Exception e) {
1582                         e.printStackTrace();
1583                     } finally {
1584                         if (tmpFile != null) {
1585                             try {
1586                                 Files.delete(tmpFile.toPath());
1587                             } catch (IOException e) {
1588                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1589                             }
1590                         }
1591                     }
1592                 }
1593                 if (syncMessage.getBlockedList().isPresent()) {
1594                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1595                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1596                         setContactBlocked(resolveSignalServiceAddress(address), true);
1597                     }
1598                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1599                         try {
1600                             setGroupBlocked(groupId, true);
1601                         } catch (GroupNotFoundException e) {
1602                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1603                         }
1604                     }
1605                 }
1606                 if (syncMessage.getContacts().isPresent()) {
1607                     File tmpFile = null;
1608                     try {
1609                         tmpFile = IOUtils.createTempFile();
1610                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1611                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1612                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1613                             if (contactsMessage.isComplete()) {
1614                                 account.getContactStore().clear();
1615                             }
1616                             DeviceContact c;
1617                             while ((c = s.read()) != null) {
1618                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1619                                     account.setProfileKey(c.getProfileKey().get());
1620                                 }
1621                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1622                                 ContactInfo contact = account.getContactStore().getContact(address);
1623                                 if (contact == null) {
1624                                     contact = new ContactInfo(address);
1625                                 }
1626                                 if (c.getName().isPresent()) {
1627                                     contact.name = c.getName().get();
1628                                 }
1629                                 if (c.getColor().isPresent()) {
1630                                     contact.color = c.getColor().get();
1631                                 }
1632                                 if (c.getProfileKey().isPresent()) {
1633                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1634                                 }
1635                                 if (c.getVerified().isPresent()) {
1636                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1637                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1638                                 }
1639                                 if (c.getExpirationTimer().isPresent()) {
1640                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1641                                 }
1642                                 contact.blocked = c.isBlocked();
1643                                 contact.inboxPosition = c.getInboxPosition().orNull();
1644                                 contact.archived = c.isArchived();
1645                                 account.getContactStore().updateContact(contact);
1646
1647                                 if (c.getAvatar().isPresent()) {
1648                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1649                                 }
1650                             }
1651                         }
1652                     } catch (Exception e) {
1653                         e.printStackTrace();
1654                     } finally {
1655                         if (tmpFile != null) {
1656                             try {
1657                                 Files.delete(tmpFile.toPath());
1658                             } catch (IOException e) {
1659                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1660                             }
1661                         }
1662                     }
1663                 }
1664                 if (syncMessage.getVerified().isPresent()) {
1665                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1666                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1667                 }
1668                 if (syncMessage.getConfiguration().isPresent()) {
1669                     // TODO
1670                 }
1671             }
1672         }
1673     }
1674
1675     private File getContactAvatarFile(String number) {
1676         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
1677     }
1678
1679     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException, MissingConfigurationException {
1680         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1681         if (attachment.isPointer()) {
1682             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1683             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1684         } else {
1685             SignalServiceAttachmentStream stream = attachment.asStream();
1686             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1687         }
1688     }
1689
1690     private File getGroupAvatarFile(byte[] groupId) {
1691         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1692     }
1693
1694     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException, MissingConfigurationException {
1695         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1696         if (attachment.isPointer()) {
1697             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1698             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1699         } else {
1700             SignalServiceAttachmentStream stream = attachment.asStream();
1701             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1702         }
1703     }
1704
1705     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1706         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
1707     }
1708
1709     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
1710         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
1711         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
1712     }
1713
1714     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException, MissingConfigurationException {
1715         if (storePreview && pointer.getPreview().isPresent()) {
1716             File previewFile = new File(outputFile + ".preview");
1717             try (OutputStream output = new FileOutputStream(previewFile)) {
1718                 byte[] preview = pointer.getPreview().get();
1719                 output.write(preview, 0, preview.length);
1720             } catch (FileNotFoundException e) {
1721                 e.printStackTrace();
1722                 return null;
1723             }
1724         }
1725
1726         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1727
1728         File tmpFile = IOUtils.createTempFile();
1729         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE)) {
1730             try (OutputStream output = new FileOutputStream(outputFile)) {
1731                 byte[] buffer = new byte[4096];
1732                 int read;
1733
1734                 while ((read = input.read(buffer)) != -1) {
1735                     output.write(buffer, 0, read);
1736                 }
1737             } catch (FileNotFoundException e) {
1738                 e.printStackTrace();
1739                 return null;
1740             }
1741         } finally {
1742             try {
1743                 Files.delete(tmpFile.toPath());
1744             } catch (IOException e) {
1745                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1746             }
1747         }
1748         return outputFile;
1749     }
1750
1751     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException, MissingConfigurationException {
1752         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1753         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
1754     }
1755
1756     private void sendGroups() throws IOException, UntrustedIdentityException {
1757         File groupsFile = IOUtils.createTempFile();
1758
1759         try {
1760             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1761                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1762                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1763                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1764                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1765                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1766                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1767                 }
1768             }
1769
1770             if (groupsFile.exists() && groupsFile.length() > 0) {
1771                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1772                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1773                             .withStream(groupsFileStream)
1774                             .withContentType("application/octet-stream")
1775                             .withLength(groupsFile.length())
1776                             .build();
1777
1778                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1779                 }
1780             }
1781         } finally {
1782             try {
1783                 Files.delete(groupsFile.toPath());
1784             } catch (IOException e) {
1785                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1786             }
1787         }
1788     }
1789
1790     public void sendContacts() throws IOException, UntrustedIdentityException {
1791         File contactsFile = IOUtils.createTempFile();
1792
1793         try {
1794             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1795                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1796                 for (ContactInfo record : account.getContactStore().getContacts()) {
1797                     VerifiedMessage verifiedMessage = null;
1798                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1799                     if (currentIdentity != null) {
1800                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1801                     }
1802
1803                     ProfileKey profileKey = null;
1804                     try {
1805                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1806                     } catch (InvalidInputException ignored) {
1807                     }
1808                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1809                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1810                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1811                             Optional.of(record.messageExpirationTime),
1812                             Optional.fromNullable(record.inboxPosition), record.archived));
1813                 }
1814
1815                 if (account.getProfileKey() != null) {
1816                     // Send our own profile key as well
1817                     out.write(new DeviceContact(account.getSelfAddress(),
1818                             Optional.absent(), Optional.absent(),
1819                             Optional.absent(), Optional.absent(),
1820                             Optional.of(account.getProfileKey()),
1821                             false, Optional.absent(), Optional.absent(), false));
1822                 }
1823             }
1824
1825             if (contactsFile.exists() && contactsFile.length() > 0) {
1826                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1827                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1828                             .withStream(contactsFileStream)
1829                             .withContentType("application/octet-stream")
1830                             .withLength(contactsFile.length())
1831                             .build();
1832
1833                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1834                 }
1835             }
1836         } finally {
1837             try {
1838                 Files.delete(contactsFile.toPath());
1839             } catch (IOException e) {
1840                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1841             }
1842         }
1843     }
1844
1845     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1846         List<SignalServiceAddress> addresses = new ArrayList<>();
1847         for (ContactInfo record : account.getContactStore().getContacts()) {
1848             if (record.blocked) {
1849                 addresses.add(record.getAddress());
1850             }
1851         }
1852         List<byte[]> groupIds = new ArrayList<>();
1853         for (GroupInfo record : account.getGroupStore().getGroups()) {
1854             if (record.blocked) {
1855                 groupIds.add(record.groupId);
1856             }
1857         }
1858         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1859     }
1860
1861     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1862         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1863         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1864     }
1865
1866     public List<ContactInfo> getContacts() {
1867         return account.getContactStore().getContacts();
1868     }
1869
1870     public ContactInfo getContact(String number) {
1871         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1872     }
1873
1874     public GroupInfo getGroup(byte[] groupId) {
1875         return account.getGroupStore().getGroup(groupId);
1876     }
1877
1878     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1879         return account.getSignalProtocolStore().getIdentities();
1880     }
1881
1882     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1883         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1884     }
1885
1886     /**
1887      * Trust this the identity with this fingerprint
1888      *
1889      * @param name        username of the identity
1890      * @param fingerprint Fingerprint
1891      */
1892     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1893         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1894         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1895         if (ids == null) {
1896             return false;
1897         }
1898         for (JsonIdentityKeyStore.Identity id : ids) {
1899             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1900                 continue;
1901             }
1902
1903             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1904             try {
1905                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1906             } catch (IOException | UntrustedIdentityException e) {
1907                 e.printStackTrace();
1908             }
1909             account.save();
1910             return true;
1911         }
1912         return false;
1913     }
1914
1915     /**
1916      * Trust this the identity with this safety number
1917      *
1918      * @param name         username of the identity
1919      * @param safetyNumber Safety number
1920      */
1921     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1922         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1923         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1924         if (ids == null) {
1925             return false;
1926         }
1927         for (JsonIdentityKeyStore.Identity id : ids) {
1928             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1929                 continue;
1930             }
1931
1932             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1933             try {
1934                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1935             } catch (IOException | UntrustedIdentityException e) {
1936                 e.printStackTrace();
1937             }
1938             account.save();
1939             return true;
1940         }
1941         return false;
1942     }
1943
1944     /**
1945      * Trust all keys of this identity without verification
1946      *
1947      * @param name username of the identity
1948      */
1949     public boolean trustIdentityAllKeys(String name) {
1950         SignalServiceAddress address = resolveSignalServiceAddress(name);
1951         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1952         if (ids == null) {
1953             return false;
1954         }
1955         for (JsonIdentityKeyStore.Identity id : ids) {
1956             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1957                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1958                 try {
1959                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1960                 } catch (IOException | UntrustedIdentityException e) {
1961                     e.printStackTrace();
1962                 }
1963             }
1964         }
1965         account.save();
1966         return true;
1967     }
1968
1969     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
1970         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), theirAddress, theirIdentityKey);
1971     }
1972
1973     void saveAccount() {
1974         account.save();
1975     }
1976
1977     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
1978         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
1979         return resolveSignalServiceAddress(canonicalizedNumber);
1980     }
1981
1982     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
1983         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
1984
1985         return resolveSignalServiceAddress(address);
1986     }
1987
1988     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
1989         if (address.matches(account.getSelfAddress())) {
1990             return account.getSelfAddress();
1991         }
1992
1993         return account.getRecipientStore().resolveServiceAddress(address);
1994     }
1995
1996     @Override
1997     public void close() throws IOException {
1998         if (messagePipe != null) {
1999             messagePipe.shutdown();
2000             messagePipe = null;
2001         }
2002
2003         if (unidentifiedMessagePipe != null) {
2004             unidentifiedMessagePipe.shutdown();
2005             unidentifiedMessagePipe = null;
2006         }
2007
2008         account.close();
2009     }
2010
2011     public interface ReceiveMessageHandler {
2012
2013         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2014     }
2015 }