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 org.asamk.Signal;
  20 import org.asamk.signal.AttachmentInvalidException;
  21 import org.asamk.signal.GroupNotFoundException;
  22 import org.asamk.signal.NotAGroupMemberException;
  23 import org.asamk.signal.TrustLevel;
  24 import org.asamk.signal.UserAlreadyExists;
  25 import org.asamk.signal.storage.SignalAccount;
  26 import org.asamk.signal.storage.contacts.ContactInfo;
  27 import org.asamk.signal.storage.groups.GroupInfo;
  28 import org.asamk.signal.storage.groups.JsonGroupStore;
  29 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  30 import org.asamk.signal.storage.threads.ThreadInfo;
  31 import org.asamk.signal.util.IOUtils;
  32 import org.asamk.signal.util.Util;
  33 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  34 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  35 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  36 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  37 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  38 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  39 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  40 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  41 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  42 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  43 import org.signal.libsignal.metadata.SelfSendException;
  44 import org.signal.zkgroup.InvalidInputException;
  45 import org.signal.zkgroup.profiles.ProfileKey;
  46 import org.whispersystems.libsignal.IdentityKey;
  47 import org.whispersystems.libsignal.IdentityKeyPair;
  48 import org.whispersystems.libsignal.InvalidKeyException;
  49 import org.whispersystems.libsignal.InvalidMessageException;
  50 import org.whispersystems.libsignal.InvalidVersionException;
  51 import org.whispersystems.libsignal.ecc.Curve;
  52 import org.whispersystems.libsignal.ecc.ECKeyPair;
  53 import org.whispersystems.libsignal.ecc.ECPublicKey;
  54 import org.whispersystems.libsignal.state.PreKeyRecord;
  55 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  56 import org.whispersystems.libsignal.util.KeyHelper;
  57 import org.whispersystems.libsignal.util.Medium;
  58 import org.whispersystems.libsignal.util.Pair;
  59 import org.whispersystems.libsignal.util.guava.Optional;
  60 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  61 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  62 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  63 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  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.SignalServiceAttachmentStream;
  72 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  73 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  74 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  76 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  77 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  78 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  79 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  80 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  81 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  82 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  83 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  84 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  85 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  86 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  87 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  88 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  89 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
  90 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  91 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  92 import org.whispersystems.signalservice.api.push.exceptions.AuthorizationFailedException;
  93 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  94 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  95 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  96 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  97 import org.whispersystems.signalservice.api.util.SleepTimer;
  98 import org.whispersystems.signalservice.api.util.StreamDetails;
  99 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 100 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 101 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 102 import org.whispersystems.util.Base64;
 103
 104 import java.io.File;
 105 import java.io.FileInputStream;
 106 import java.io.FileNotFoundException;
 107 import java.io.FileOutputStream;
 108 import java.io.IOException;
 109 import java.io.InputStream;
 110 import java.io.OutputStream;
 111 import java.net.URI;
 112 import java.nio.file.Files;
 113 import java.nio.file.Paths;
 114 import java.nio.file.StandardCopyOption;
 115 import java.util.ArrayList;
 116 import java.util.Arrays;
 117 import java.util.Collection;
 118 import java.util.Collections;
 119 import java.util.Date;
 120 import java.util.HashSet;
 121 import java.util.LinkedList;
 122 import java.util.List;
 123 import java.util.Locale;
 124 import java.util.Map;
 125 import java.util.Objects;
 126 import java.util.Set;
 127 import java.util.concurrent.TimeUnit;
 128 import java.util.concurrent.TimeoutException;
 129
 130 public class Manager implements Signal {
 131
 132     private static final SignalServiceProfile.Capabilities capabilities = new SignalServiceProfile.Capabilities(false, false);
 133
 134     private final String settingsPath;
 135     private final String dataPath;
 136     private final String attachmentsPath;
 137     private final String avatarsPath;
 138     private final SleepTimer timer = new UptimeSleepTimer();
 139
 140     private SignalAccount account;
 141     private String username;
 142     private SignalServiceAccountManager accountManager;
 143     private SignalServiceMessagePipe messagePipe = null;
 144     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 145
 146     public Manager(String username, String settingsPath) {
 147         this.username = username;
 148         this.settingsPath = settingsPath;
 149         this.dataPath = this.settingsPath + "/data";
 150         this.attachmentsPath = this.settingsPath + "/attachments";
 151         this.avatarsPath = this.settingsPath + "/avatars";
 152
 153     }
 154
 155     public String getUsername() {
 156         return username;
 157     }
 158
 159     private SignalServiceAddress getSelfAddress() {
 160         return new SignalServiceAddress(null, username);
 161     }
 162
 163     private SignalServiceAccountManager getSignalServiceAccountManager() {
 164         return new SignalServiceAccountManager(BaseConfig.serviceConfiguration, null, account.getUsername(), account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 165     }
 166
 167     private IdentityKey getIdentity() {
 168         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
 169     }
 170
 171     public int getDeviceId() {
 172         return account.getDeviceId();
 173     }
 174
 175     private String getMessageCachePath() {
 176         return this.dataPath + "/" + username + ".d/msg-cache";
 177     }
 178
 179     private String getMessageCachePath(String sender) {
 180         return getMessageCachePath() + "/" + sender.replace("/", "_");
 181     }
 182
 183     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 184         String cachePath = getMessageCachePath(sender);
 185         IOUtils.createPrivateDirectories(cachePath);
 186         return new File(cachePath + "/" + now + "_" + timestamp);
 187     }
 188
 189     public boolean userHasKeys() {
 190         return account != null && account.getSignalProtocolStore() != null;
 191     }
 192
 193     public void init() throws IOException {
 194         if (!SignalAccount.userExists(dataPath, username)) {
 195             return;
 196         }
 197         account = SignalAccount.load(dataPath, username);
 198
 199         migrateLegacyConfigs();
 200
 201         accountManager = getSignalServiceAccountManager();
 202         try {
 203             if (account.isRegistered() && accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 204                 refreshPreKeys();
 205                 account.save();
 206             }
 207         } catch (AuthorizationFailedException e) {
 208             System.err.println("Authorization failed, was the number registered elsewhere?");
 209             throw e;
 210         }
 211     }
 212
 213     private void migrateLegacyConfigs() {
 214         // Copy group avatars that were previously stored in the attachments folder
 215         // to the new avatar folder
 216         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 217             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 218                 File avatarFile = getGroupAvatarFile(g.groupId);
 219                 File attachmentFile = getAttachmentFile(g.getAvatarId());
 220                 if (!avatarFile.exists() && attachmentFile.exists()) {
 221                     try {
 222                         IOUtils.createPrivateDirectories(avatarsPath);
 223                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 224                     } catch (Exception e) {
 225                         // Ignore
 226                     }
 227                 }
 228             }
 229             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 230             account.save();
 231         }
 232         if (account.getProfileKey() == null) {
 233             // Old config file, creating new profile key
 234             account.setProfileKey(KeyUtils.createProfileKey());
 235             account.save();
 236         }
 237     }
 238
 239     private void createNewIdentity() throws IOException {
 240         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 241         int registrationId = KeyHelper.generateRegistrationId(false);
 242         if (username == null) {
 243             account = SignalAccount.createTemporaryAccount(identityKey, registrationId);
 244         } else {
 245             ProfileKey profileKey = KeyUtils.createProfileKey();
 246             account = SignalAccount.create(dataPath, username, identityKey, registrationId, profileKey);
 247             account.save();
 248         }
 249     }
 250
 251     public boolean isRegistered() {
 252         return account != null && account.isRegistered();
 253     }
 254
 255     public void register(boolean voiceVerification) throws IOException {
 256         if (account == null) {
 257             createNewIdentity();
 258         }
 259         account.setPassword(KeyUtils.createPassword());
 260         accountManager = getSignalServiceAccountManager();
 261
 262         if (voiceVerification) {
 263             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.<String>absent(), Optional.<String>absent());
 264         } else {
 265             accountManager.requestSmsVerificationCode(false, Optional.<String>absent(), Optional.<String>absent());
 266         }
 267
 268         account.setRegistered(false);
 269         account.save();
 270     }
 271
 272     public void updateAccountAttributes() throws IOException {
 273         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, capabilities);
 274     }
 275
 276     public void setProfileName(String name) throws IOException {
 277         accountManager.setProfileName(account.getProfileKey(), name);
 278     }
 279
 280     public void setProfileAvatar(File avatar) throws IOException {
 281         final StreamDetails streamDetails = Utils.createStreamDetailsFromFile(avatar);
 282         accountManager.setProfileAvatar(account.getProfileKey(), streamDetails);
 283         streamDetails.getStream().close();
 284     }
 285
 286     public void removeProfileAvatar() throws IOException {
 287         accountManager.setProfileAvatar(account.getProfileKey(), null);
 288     }
 289
 290     public void unregister() throws IOException {
 291         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 292         // If this is the master device, other users can't send messages to this number anymore.
 293         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 294         accountManager.setGcmId(Optional.<String>absent());
 295
 296         account.setRegistered(false);
 297         account.save();
 298     }
 299
 300     public String getDeviceLinkUri() throws TimeoutException, IOException {
 301         if (account == null) {
 302             createNewIdentity();
 303         }
 304         account.setPassword(KeyUtils.createPassword());
 305         accountManager = getSignalServiceAccountManager();
 306         String uuid = accountManager.getNewDeviceUuid();
 307
 308         return Utils.createDeviceLinkUri(new Utils.DeviceLinkInfo(uuid, getIdentity().getPublicKey()));
 309     }
 310
 311     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 312         account.setSignalingKey(KeyUtils.createSignalingKey());
 313         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 314
 315         username = ret.getNumber();
 316         // TODO do this check before actually registering
 317         if (SignalAccount.userExists(dataPath, username)) {
 318             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 319         }
 320
 321         // Create new account with the synced identity
 322         byte[] profileKeyBytes = ret.getProfileKey();
 323         ProfileKey profileKey;
 324         if (profileKeyBytes == null) {
 325             profileKey = KeyUtils.createProfileKey();
 326         } else {
 327             try {
 328                 profileKey = new ProfileKey(profileKeyBytes);
 329             } catch (InvalidInputException e) {
 330                 throw new IOException("Received invalid profileKey", e);
 331             }
 332         }
 333         account = SignalAccount.createLinkedAccount(dataPath, username, account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 334
 335         refreshPreKeys();
 336
 337         requestSyncGroups();
 338         requestSyncContacts();
 339         requestSyncBlocked();
 340         requestSyncConfiguration();
 341
 342         account.save();
 343     }
 344
 345     public List<DeviceInfo> getLinkedDevices() throws IOException {
 346         List<DeviceInfo> devices = accountManager.getDevices();
 347         account.setMultiDevice(devices.size() > 1);
 348         account.save();
 349         return devices;
 350     }
 351
 352     public void removeLinkedDevices(int deviceId) throws IOException {
 353         accountManager.removeDevice(deviceId);
 354         List<DeviceInfo> devices = accountManager.getDevices();
 355         account.setMultiDevice(devices.size() > 1);
 356         account.save();
 357     }
 358
 359     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 360         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 361
 362         addDevice(info.deviceIdentifier, info.deviceKey);
 363     }
 364
 365     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 366         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 367         String verificationCode = accountManager.getNewDeviceVerificationCode();
 368
 369         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 370         account.setMultiDevice(true);
 371         account.save();
 372     }
 373
 374     private List<PreKeyRecord> generatePreKeys() {
 375         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 376
 377         final int offset = account.getPreKeyIdOffset();
 378         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 379             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 380             ECKeyPair keyPair = Curve.generateKeyPair();
 381             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 382
 383             records.add(record);
 384         }
 385
 386         account.addPreKeys(records);
 387         account.save();
 388
 389         return records;
 390     }
 391
 392     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 393         try {
 394             ECKeyPair keyPair = Curve.generateKeyPair();
 395             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 396             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 397
 398             account.addSignedPreKey(record);
 399             account.save();
 400
 401             return record;
 402         } catch (InvalidKeyException e) {
 403             throw new AssertionError(e);
 404         }
 405     }
 406
 407     public void verifyAccount(String verificationCode, String pin) throws IOException {
 408         verificationCode = verificationCode.replace("-", "");
 409         account.setSignalingKey(KeyUtils.createSignalingKey());
 410         // TODO make unrestricted unidentified access configurable
 411         accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, capabilities);
 412
 413         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 414         account.setRegistered(true);
 415         account.setRegistrationLockPin(pin);
 416
 417         refreshPreKeys();
 418         account.save();
 419     }
 420
 421     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 422         if (pin.isPresent()) {
 423             account.setRegistrationLockPin(pin.get());
 424             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 425         } else {
 426             account.setRegistrationLockPin(null);
 427             accountManager.removeV1Pin();
 428         }
 429         account.save();
 430     }
 431
 432     private void refreshPreKeys() throws IOException {
 433         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 434         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 435         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 436
 437         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 438     }
 439
 440     private SignalServiceMessageReceiver getMessageReceiver() {
 441         return new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, null, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
 442     }
 443
 444     private SignalServiceMessageSender getMessageSender() {
 445         return new SignalServiceMessageSender(BaseConfig.serviceConfiguration, null, username, account.getPassword(),
 446                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 447     }
 448
 449     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 450         File file = getGroupAvatarFile(groupId);
 451         if (!file.exists()) {
 452             return Optional.absent();
 453         }
 454
 455         return Optional.of(Utils.createAttachment(file));
 456     }
 457
 458     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 459         File file = getContactAvatarFile(number);
 460         if (!file.exists()) {
 461             return Optional.absent();
 462         }
 463
 464         return Optional.of(Utils.createAttachment(file));
 465     }
 466
 467     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 468         GroupInfo g = account.getGroupStore().getGroup(groupId);
 469         if (g == null) {
 470             throw new GroupNotFoundException(groupId);
 471         }
 472         for (String member : g.members) {
 473             if (member.equals(this.username)) {
 474                 return g;
 475             }
 476         }
 477         throw new NotAGroupMemberException(groupId, g.name);
 478     }
 479
 480     public List<GroupInfo> getGroups() {
 481         return account.getGroupStore().getGroups();
 482     }
 483
 484     @Override
 485     public void sendGroupMessage(String messageText, List<String> attachments,
 486                                  byte[] groupId)
 487             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 488         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 489         if (attachments != null) {
 490             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 491         }
 492         if (groupId != null) {
 493             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 494                     .withId(groupId)
 495                     .build();
 496             messageBuilder.asGroupMessage(group);
 497         }
 498         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 499         if (thread != null) {
 500             messageBuilder.withExpiration(thread.messageExpirationTime);
 501         }
 502
 503         final GroupInfo g = getGroupForSending(groupId);
 504
 505         // Don't send group message to ourself
 506         final List<String> membersSend = new ArrayList<>(g.members);
 507         membersSend.remove(this.username);
 508         sendMessageLegacy(messageBuilder, membersSend);
 509     }
 510
 511     public void sendGroupMessageReaction(String emoji, boolean remove, SignalServiceAddress targetAuthor,
 512                                          long targetSentTimestamp, byte[] groupId)
 513             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 514         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, targetAuthor, targetSentTimestamp);
 515         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 516                 .withReaction(reaction)
 517                 .withProfileKey(account.getProfileKey().serialize());
 518         if (groupId != null) {
 519             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 520                     .withId(groupId)
 521                     .build();
 522             messageBuilder.asGroupMessage(group);
 523         }
 524         final GroupInfo g = getGroupForSending(groupId);
 525         // Don't send group message to ourself
 526         final List<String> membersSend = new ArrayList<>(g.members);
 527         membersSend.remove(this.username);
 528         sendMessageLegacy(messageBuilder, membersSend);
 529     }
 530
 531     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 532         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 533                 .withId(groupId)
 534                 .build();
 535
 536         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 537                 .asGroupMessage(group);
 538
 539         final GroupInfo g = getGroupForSending(groupId);
 540         g.members.remove(this.username);
 541         account.getGroupStore().updateGroup(g);
 542
 543         sendMessageLegacy(messageBuilder, g.members);
 544     }
 545
 546     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 547         GroupInfo g;
 548         if (groupId == null) {
 549             // Create new group
 550             g = new GroupInfo(KeyUtils.createGroupId());
 551             g.members.add(username);
 552         } else {
 553             g = getGroupForSending(groupId);
 554         }
 555
 556         if (name != null) {
 557             g.name = name;
 558         }
 559
 560         if (members != null) {
 561             Set<String> newMembers = new HashSet<>();
 562             for (String member : members) {
 563                 try {
 564                     member = Utils.canonicalizeNumber(member, username);
 565                 } catch (InvalidNumberException e) {
 566                     System.err.println("Failed to add member \"" + member + "\" to group: " + e.getMessage());
 567                     System.err.println("Aborting…");
 568                     System.exit(1);
 569                 }
 570                 if (g.members.contains(member)) {
 571                     continue;
 572                 }
 573                 newMembers.add(member);
 574                 g.members.add(member);
 575             }
 576             final List<ContactTokenDetails> contacts = accountManager.getContacts(newMembers);
 577             if (contacts.size() != newMembers.size()) {
 578                 // Some of the new members are not registered on Signal
 579                 for (ContactTokenDetails contact : contacts) {
 580                     newMembers.remove(contact.getNumber());
 581                 }
 582                 System.err.println("Failed to add members " + Util.join(", ", newMembers) + " to group: Not registered on Signal");
 583                 System.err.println("Aborting…");
 584                 System.exit(1);
 585             }
 586         }
 587
 588         if (avatarFile != null) {
 589             IOUtils.createPrivateDirectories(avatarsPath);
 590             File aFile = getGroupAvatarFile(g.groupId);
 591             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 592         }
 593
 594         account.getGroupStore().updateGroup(g);
 595
 596         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 597
 598         // Don't send group message to ourself
 599         final List<String> membersSend = new ArrayList<>(g.members);
 600         membersSend.remove(this.username);
 601         sendMessageLegacy(messageBuilder, membersSend);
 602         return g.groupId;
 603     }
 604
 605     private void sendUpdateGroupMessage(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 606         if (groupId == null) {
 607             return;
 608         }
 609         GroupInfo g = getGroupForSending(groupId);
 610
 611         if (!g.members.contains(recipient)) {
 612             return;
 613         }
 614
 615         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 616
 617         // Send group message only to the recipient who requested it
 618         final List<String> membersSend = new ArrayList<>();
 619         membersSend.add(recipient);
 620         sendMessageLegacy(messageBuilder, membersSend);
 621     }
 622
 623     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 624         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 625                 .withId(g.groupId)
 626                 .withName(g.name)
 627                 .withMembers(new ArrayList<>(g.getMembers()));
 628
 629         File aFile = getGroupAvatarFile(g.groupId);
 630         if (aFile.exists()) {
 631             try {
 632                 group.withAvatar(Utils.createAttachment(aFile));
 633             } catch (IOException e) {
 634                 throw new AttachmentInvalidException(aFile.toString(), e);
 635             }
 636         }
 637
 638         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 639                 .asGroupMessage(group.build());
 640
 641         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(g.groupId));
 642         if (thread != null) {
 643             messageBuilder.withExpiration(thread.messageExpirationTime);
 644         }
 645
 646         return messageBuilder;
 647     }
 648
 649     private void sendGroupInfoRequest(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 650         if (groupId == null) {
 651             return;
 652         }
 653
 654         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 655                 .withId(groupId);
 656
 657         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 658                 .asGroupMessage(group.build());
 659
 660         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 661         if (thread != null) {
 662             messageBuilder.withExpiration(thread.messageExpirationTime);
 663         }
 664
 665         // Send group info request message to the recipient who sent us a message with this groupId
 666         final List<String> membersSend = new ArrayList<>();
 667         membersSend.add(recipient);
 668         sendMessageLegacy(messageBuilder, membersSend);
 669     }
 670
 671     @Override
 672     public void sendMessage(String message, List<String> attachments, String recipient)
 673             throws EncapsulatedExceptions, AttachmentInvalidException, IOException {
 674         List<String> recipients = new ArrayList<>(1);
 675         recipients.add(recipient);
 676         sendMessage(message, attachments, recipients);
 677     }
 678
 679     @Override
 680     public void sendMessage(String messageText, List<String> attachments,
 681                             List<String> recipients)
 682             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 683         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 684         if (attachments != null) {
 685             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 686
 687             // Upload attachments here, so we only upload once even for multiple recipients
 688             SignalServiceMessageSender messageSender = getMessageSender();
 689             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 690             for (SignalServiceAttachment attachment : attachmentStreams) {
 691                 if (attachment.isStream()) {
 692                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 693                 } else if (attachment.isPointer()) {
 694                     attachmentPointers.add(attachment.asPointer());
 695                 }
 696             }
 697
 698             messageBuilder.withAttachments(attachmentPointers);
 699         }
 700         messageBuilder.withProfileKey(account.getProfileKey().serialize());
 701         sendMessageLegacy(messageBuilder, recipients);
 702     }
 703
 704     public void sendMessageReaction(String emoji, boolean remove, SignalServiceAddress targetAuthor,
 705                                     long targetSentTimestamp, List<String> recipients)
 706             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 707         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, targetAuthor, targetSentTimestamp);
 708         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 709                 .withReaction(reaction)
 710                 .withProfileKey(account.getProfileKey().serialize());
 711         sendMessageLegacy(messageBuilder, recipients);
 712     }
 713
 714     @Override
 715     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions {
 716         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 717                 .asEndSessionMessage();
 718
 719         sendMessageLegacy(messageBuilder, recipients);
 720     }
 721
 722     @Override
 723     public String getContactName(String number) throws InvalidNumberException {
 724         String canonicalizedNumber = Utils.canonicalizeNumber(number, username);
 725         ContactInfo contact = account.getContactStore().getContact(canonicalizedNumber);
 726         if (contact == null) {
 727             return "";
 728         } else {
 729             return contact.name;
 730         }
 731     }
 732
 733     @Override
 734     public void setContactName(String number, String name) throws InvalidNumberException {
 735         String canonicalizedNumber = Utils.canonicalizeNumber(number, username);
 736         ContactInfo contact = account.getContactStore().getContact(canonicalizedNumber);
 737         if (contact == null) {
 738             contact = new ContactInfo();
 739             contact.number = canonicalizedNumber;
 740             System.err.println("Add contact " + canonicalizedNumber + " named " + name);
 741         } else {
 742             System.err.println("Updating contact " + canonicalizedNumber + " name " + contact.name + " -> " + name);
 743         }
 744         contact.name = name;
 745         account.getContactStore().updateContact(contact);
 746         account.save();
 747     }
 748
 749     @Override
 750     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 751         number = Utils.canonicalizeNumber(number, username);
 752         ContactInfo contact = account.getContactStore().getContact(number);
 753         if (contact == null) {
 754             contact = new ContactInfo();
 755             contact.number = number;
 756             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + number);
 757         } else {
 758             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + number);
 759         }
 760         contact.blocked = blocked;
 761         account.getContactStore().updateContact(contact);
 762         account.save();
 763     }
 764
 765     @Override
 766     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 767         GroupInfo group = getGroup(groupId);
 768         if (group == null) {
 769             throw new GroupNotFoundException(groupId);
 770         } else {
 771             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 772             group.blocked = blocked;
 773             account.getGroupStore().updateGroup(group);
 774             account.save();
 775         }
 776     }
 777
 778     @Override
 779     public List<byte[]> getGroupIds() {
 780         List<GroupInfo> groups = getGroups();
 781         List<byte[]> ids = new ArrayList<>(groups.size());
 782         for (GroupInfo group : groups) {
 783             ids.add(group.groupId);
 784         }
 785         return ids;
 786     }
 787
 788     @Override
 789     public String getGroupName(byte[] groupId) {
 790         GroupInfo group = getGroup(groupId);
 791         if (group == null) {
 792             return "";
 793         } else {
 794             return group.name;
 795         }
 796     }
 797
 798     @Override
 799     public List<String> getGroupMembers(byte[] groupId) {
 800         GroupInfo group = getGroup(groupId);
 801         if (group == null) {
 802             return new ArrayList<>();
 803         } else {
 804             return new ArrayList<>(group.members);
 805         }
 806     }
 807
 808     @Override
 809     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 810         if (groupId.length == 0) {
 811             groupId = null;
 812         }
 813         if (name.isEmpty()) {
 814             name = null;
 815         }
 816         if (members.size() == 0) {
 817             members = null;
 818         }
 819         if (avatar.isEmpty()) {
 820             avatar = null;
 821         }
 822         return sendUpdateGroupMessage(groupId, name, members, avatar);
 823     }
 824
 825     /**
 826      * Change the expiration timer for a thread (number of groupId)
 827      *
 828      * @param numberOrGroupId
 829      * @param messageExpirationTimer
 830      */
 831     public void setExpirationTimer(String numberOrGroupId, int messageExpirationTimer) {
 832         ThreadInfo thread = account.getThreadStore().getThread(numberOrGroupId);
 833         thread.messageExpirationTime = messageExpirationTimer;
 834         account.getThreadStore().updateThread(thread);
 835     }
 836
 837     private void requestSyncGroups() throws IOException {
 838         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 839         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 840         try {
 841             sendSyncMessage(message);
 842         } catch (UntrustedIdentityException e) {
 843             e.printStackTrace();
 844         }
 845     }
 846
 847     private void requestSyncContacts() throws IOException {
 848         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 849         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 850         try {
 851             sendSyncMessage(message);
 852         } catch (UntrustedIdentityException e) {
 853             e.printStackTrace();
 854         }
 855     }
 856
 857     private void requestSyncBlocked() throws IOException {
 858         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 859         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 860         try {
 861             sendSyncMessage(message);
 862         } catch (UntrustedIdentityException e) {
 863             e.printStackTrace();
 864         }
 865     }
 866
 867     private void requestSyncConfiguration() throws IOException {
 868         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 869         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 870         try {
 871             sendSyncMessage(message);
 872         } catch (UntrustedIdentityException e) {
 873             e.printStackTrace();
 874         }
 875     }
 876
 877     private byte[] getSelfUnidentifiedAccessKey() {
 878         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 879     }
 880
 881     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 882         // TODO implement
 883         return null;
 884     }
 885
 886     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 887         // TODO implement
 888         return Optional.absent();
 889     }
 890
 891     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
 892         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
 893         for (SignalServiceAddress recipient : recipients) {
 894             result.add(Optional.<UnidentifiedAccessPair>absent());
 895         }
 896         return result;
 897     }
 898
 899     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
 900         // TODO implement
 901         return Optional.absent();
 902     }
 903
 904     private void sendSyncMessage(SignalServiceSyncMessage message)
 905             throws IOException, UntrustedIdentityException {
 906         SignalServiceMessageSender messageSender = getMessageSender();
 907         try {
 908             messageSender.sendMessage(message, getAccessForSync());
 909         } catch (UntrustedIdentityException e) {
 910             account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 911             throw e;
 912         }
 913     }
 914
 915     /**
 916      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
 917      */
 918     private void sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 919             throws EncapsulatedExceptions, IOException {
 920         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
 921
 922         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
 923         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
 924         List<NetworkFailureException> networkExceptions = new LinkedList<>();
 925
 926         for (SendMessageResult result : results) {
 927             if (result.isUnregisteredFailure()) {
 928                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getNumber().get(), null));
 929             } else if (result.isNetworkFailure()) {
 930                 networkExceptions.add(new NetworkFailureException(result.getAddress().getNumber().get(), null));
 931             } else if (result.getIdentityFailure() != null) {
 932                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getNumber().get(), result.getIdentityFailure().getIdentityKey()));
 933             }
 934         }
 935         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
 936             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
 937         }
 938     }
 939
 940     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 941             throws IOException {
 942         Set<SignalServiceAddress> recipientsTS = Utils.getSignalServiceAddresses(recipients, username);
 943         if (recipientsTS == null) {
 944             account.save();
 945             return Collections.emptyList();
 946         }
 947
 948         SignalServiceDataMessage message = null;
 949         try {
 950             SignalServiceMessageSender messageSender = getMessageSender();
 951
 952             message = messageBuilder.build();
 953             if (message.getGroupInfo().isPresent()) {
 954                 try {
 955                     final boolean isRecipientUpdate = false;
 956                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipientsTS), getAccessFor(recipientsTS), isRecipientUpdate, message);
 957                     for (SendMessageResult r : result) {
 958                         if (r.getIdentityFailure() != null) {
 959                             account.getSignalProtocolStore().saveIdentity(r.getAddress().getNumber().get(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
 960                         }
 961                     }
 962                     return result;
 963                 } catch (UntrustedIdentityException e) {
 964                     account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 965                     return Collections.emptyList();
 966                 }
 967             } else if (recipientsTS.size() == 1 && recipientsTS.contains(getSelfAddress())) {
 968                 SignalServiceAddress recipient = getSelfAddress();
 969                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
 970                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
 971                         message.getTimestamp(),
 972                         message,
 973                         message.getExpiresInSeconds(),
 974                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
 975                         false);
 976                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
 977
 978                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 979                 try {
 980                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
 981                 } catch (UntrustedIdentityException e) {
 982                     account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 983                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
 984                 }
 985                 return results;
 986             } else {
 987                 // Send to all individually, so sync messages are sent correctly
 988                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 989                 for (SignalServiceAddress address : recipientsTS) {
 990                     ThreadInfo thread = account.getThreadStore().getThread(address.getNumber().get());
 991                     if (thread != null) {
 992                         messageBuilder.withExpiration(thread.messageExpirationTime);
 993                     } else {
 994                         messageBuilder.withExpiration(0);
 995                     }
 996                     message = messageBuilder.build();
 997                     try {
 998                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
 999                         results.add(result);
1000                     } catch (UntrustedIdentityException e) {
1001                         account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1002                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
1003                     }
1004                 }
1005                 return results;
1006             }
1007         } finally {
1008             if (message != null && message.isEndSession()) {
1009                 for (SignalServiceAddress recipient : recipientsTS) {
1010                     handleEndSession(recipient.getNumber().get());
1011                 }
1012             }
1013             account.save();
1014         }
1015     }
1016
1017     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, ProtocolUntrustedIdentityException, SelfSendException, UnsupportedDataMessageException {
1018         SignalServiceCipher cipher = new SignalServiceCipher(getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1019         try {
1020             return cipher.decrypt(envelope);
1021         } catch (ProtocolUntrustedIdentityException e) {
1022             // TODO We don't get the new untrusted identity from ProtocolUntrustedIdentityException anymore ... we need to get it from somewhere else
1023 //            account.getSignalProtocolStore().saveIdentity(e.getSender(), e.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1024             throw e;
1025         }
1026     }
1027
1028     private void handleEndSession(String source) {
1029         account.getSignalProtocolStore().deleteAllSessions(source);
1030     }
1031
1032     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, String source, SignalServiceAddress destination, boolean ignoreAttachments) {
1033         String threadId;
1034         if (message.getGroupInfo().isPresent()) {
1035             SignalServiceGroup groupInfo = message.getGroupInfo().get();
1036             threadId = Base64.encodeBytes(groupInfo.getGroupId());
1037             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1038             switch (groupInfo.getType()) {
1039                 case UPDATE:
1040                     if (group == null) {
1041                         group = new GroupInfo(groupInfo.getGroupId());
1042                     }
1043
1044                     if (groupInfo.getAvatar().isPresent()) {
1045                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1046                         if (avatar.isPointer()) {
1047                             try {
1048                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1049                             } catch (IOException | InvalidMessageException e) {
1050                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
1051                             }
1052                         }
1053                     }
1054
1055                     if (groupInfo.getName().isPresent()) {
1056                         group.name = groupInfo.getName().get();
1057                     }
1058
1059                     if (groupInfo.getMembers().isPresent()) {
1060                         group.addMembers(groupInfo.getMembers().get());
1061                     }
1062
1063                     account.getGroupStore().updateGroup(group);
1064                     break;
1065                 case DELIVER:
1066                     if (group == null) {
1067                         try {
1068                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1069                         } catch (IOException | EncapsulatedExceptions e) {
1070                             e.printStackTrace();
1071                         }
1072                     }
1073                     break;
1074                 case QUIT:
1075                     if (group == null) {
1076                         try {
1077                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1078                         } catch (IOException | EncapsulatedExceptions e) {
1079                             e.printStackTrace();
1080                         }
1081                     } else {
1082                         group.members.remove(source);
1083                         account.getGroupStore().updateGroup(group);
1084                     }
1085                     break;
1086                 case REQUEST_INFO:
1087                     if (group != null) {
1088                         try {
1089                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1090                         } catch (IOException | EncapsulatedExceptions e) {
1091                             e.printStackTrace();
1092                         } catch (NotAGroupMemberException e) {
1093                             // We have left this group, so don't send a group update message
1094                         }
1095                     }
1096                     break;
1097             }
1098         } else {
1099             if (isSync) {
1100                 threadId = destination.getNumber().get();
1101             } else {
1102                 threadId = source;
1103             }
1104         }
1105         if (message.isEndSession()) {
1106             handleEndSession(isSync ? destination.getNumber().get() : source);
1107         }
1108         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1109             ThreadInfo thread = account.getThreadStore().getThread(threadId);
1110             if (thread == null) {
1111                 thread = new ThreadInfo();
1112                 thread.id = threadId;
1113             }
1114             if (thread.messageExpirationTime != message.getExpiresInSeconds()) {
1115                 thread.messageExpirationTime = message.getExpiresInSeconds();
1116                 account.getThreadStore().updateThread(thread);
1117             }
1118         }
1119         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1120             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1121                 if (attachment.isPointer()) {
1122                     try {
1123                         retrieveAttachment(attachment.asPointer());
1124                     } catch (IOException | InvalidMessageException e) {
1125                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
1126                     }
1127                 }
1128             }
1129         }
1130         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1131             if (source.equals(username)) {
1132                 try {
1133                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1134                 } catch (InvalidInputException ignored) {
1135                 }
1136             }
1137             ContactInfo contact = account.getContactStore().getContact(source);
1138             if (contact == null) {
1139                 contact = new ContactInfo();
1140                 contact.number = source;
1141             }
1142             contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1143         }
1144         if (message.getPreviews().isPresent()) {
1145             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1146             for (SignalServiceDataMessage.Preview preview : previews) {
1147                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1148                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1149                     try {
1150                         retrieveAttachment(attachment);
1151                     } catch (IOException | InvalidMessageException e) {
1152                         System.err.println("Failed to retrieve attachment (" + attachment.getId() + "): " + e.getMessage());
1153                     }
1154                 }
1155             }
1156         }
1157     }
1158
1159     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1160         final File cachePath = new File(getMessageCachePath());
1161         if (!cachePath.exists()) {
1162             return;
1163         }
1164         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1165             if (!dir.isDirectory()) {
1166                 continue;
1167             }
1168
1169             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1170                 if (!fileEntry.isFile()) {
1171                     continue;
1172                 }
1173                 SignalServiceEnvelope envelope;
1174                 try {
1175                     envelope = Utils.loadEnvelope(fileEntry);
1176                     if (envelope == null) {
1177                         continue;
1178                     }
1179                 } catch (IOException e) {
1180                     e.printStackTrace();
1181                     continue;
1182                 }
1183                 SignalServiceContent content = null;
1184                 if (!envelope.isReceipt()) {
1185                     try {
1186                         content = decryptMessage(envelope);
1187                     } catch (Exception e) {
1188                         continue;
1189                     }
1190                     handleMessage(envelope, content, ignoreAttachments);
1191                 }
1192                 account.save();
1193                 handler.handleMessage(envelope, content, null);
1194                 try {
1195                     Files.delete(fileEntry.toPath());
1196                 } catch (IOException e) {
1197                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1198                 }
1199             }
1200             // Try to delete directory if empty
1201             dir.delete();
1202         }
1203     }
1204
1205     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1206         retryFailedReceivedMessages(handler, ignoreAttachments);
1207         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1208
1209         try {
1210             if (messagePipe == null) {
1211                 messagePipe = messageReceiver.createMessagePipe();
1212             }
1213
1214             while (true) {
1215                 SignalServiceEnvelope envelope;
1216                 SignalServiceContent content = null;
1217                 Exception exception = null;
1218                 final long now = new Date().getTime();
1219                 try {
1220                     envelope = messagePipe.read(timeout, unit, new SignalServiceMessagePipe.MessagePipeCallback() {
1221                         @Override
1222                         public void onMessage(SignalServiceEnvelope envelope) {
1223                             // store message on disk, before acknowledging receipt to the server
1224                             try {
1225                                 File cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1226                                 Utils.storeEnvelope(envelope, cacheFile);
1227                             } catch (IOException e) {
1228                                 System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1229                             }
1230                         }
1231                     });
1232                 } catch (TimeoutException e) {
1233                     if (returnOnTimeout)
1234                         return;
1235                     continue;
1236                 } catch (InvalidVersionException e) {
1237                     System.err.println("Ignoring error: " + e.getMessage());
1238                     continue;
1239                 }
1240                 if (!envelope.isReceipt()) {
1241                     try {
1242                         content = decryptMessage(envelope);
1243                     } catch (Exception e) {
1244                         exception = e;
1245                     }
1246                     handleMessage(envelope, content, ignoreAttachments);
1247                 }
1248                 account.save();
1249                 if (!isMessageBlocked(envelope, content)) {
1250                     handler.handleMessage(envelope, content, exception);
1251                 }
1252                 if (!(exception instanceof ProtocolUntrustedIdentityException)) {
1253                     File cacheFile = null;
1254                     try {
1255                         cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1256                         Files.delete(cacheFile.toPath());
1257                         // Try to delete directory if empty
1258                         new File(getMessageCachePath()).delete();
1259                     } catch (IOException e) {
1260                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1261                     }
1262                 }
1263             }
1264         } finally {
1265             if (messagePipe != null) {
1266                 messagePipe.shutdown();
1267                 messagePipe = null;
1268             }
1269         }
1270     }
1271
1272     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1273         SignalServiceAddress source;
1274         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1275             source = envelope.getSourceAddress();
1276         } else if (content != null) {
1277             source = content.getSender();
1278         } else {
1279             return false;
1280         }
1281         ContactInfo sourceContact = getContact(source.getNumber().get());
1282         if (sourceContact != null && sourceContact.blocked) {
1283             return true;
1284         }
1285
1286         if (content != null && content.getDataMessage().isPresent()) {
1287             SignalServiceDataMessage message = content.getDataMessage().get();
1288             if (message.getGroupInfo().isPresent()) {
1289                 SignalServiceGroup groupInfo = message.getGroupInfo().get();
1290                 GroupInfo group = getGroup(groupInfo.getGroupId());
1291                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1292                     return true;
1293                 }
1294             }
1295         }
1296         return false;
1297     }
1298
1299     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1300         if (content != null) {
1301             SignalServiceAddress sender;
1302             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1303                 sender = envelope.getSourceAddress();
1304             } else {
1305                 sender = content.getSender();
1306             }
1307             if (content.getDataMessage().isPresent()) {
1308                 SignalServiceDataMessage message = content.getDataMessage().get();
1309                 handleSignalServiceDataMessage(message, false, sender.getNumber().get(), getSelfAddress(), ignoreAttachments);
1310             }
1311             if (content.getSyncMessage().isPresent()) {
1312                 account.setMultiDevice(true);
1313                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1314                 if (syncMessage.getSent().isPresent()) {
1315                     SentTranscriptMessage message = syncMessage.getSent().get();
1316                     handleSignalServiceDataMessage(message.getMessage(), true, sender.getNumber().get(), message.getDestination().orNull(), ignoreAttachments);
1317                 }
1318                 if (syncMessage.getRequest().isPresent()) {
1319                     RequestMessage rm = syncMessage.getRequest().get();
1320                     if (rm.isContactsRequest()) {
1321                         try {
1322                             sendContacts();
1323                         } catch (UntrustedIdentityException | IOException e) {
1324                             e.printStackTrace();
1325                         }
1326                     }
1327                     if (rm.isGroupsRequest()) {
1328                         try {
1329                             sendGroups();
1330                         } catch (UntrustedIdentityException | IOException e) {
1331                             e.printStackTrace();
1332                         }
1333                     }
1334                     if (rm.isBlockedListRequest()) {
1335                         try {
1336                             sendBlockedList();
1337                         } catch (UntrustedIdentityException | IOException e) {
1338                             e.printStackTrace();
1339                         }
1340                     }
1341                     // TODO Handle rm.isConfigurationRequest();
1342                 }
1343                 if (syncMessage.getGroups().isPresent()) {
1344                     File tmpFile = null;
1345                     try {
1346                         tmpFile = IOUtils.createTempFile();
1347                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1348                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1349                             DeviceGroup g;
1350                             while ((g = s.read()) != null) {
1351                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1352                                 if (syncGroup == null) {
1353                                     syncGroup = new GroupInfo(g.getId());
1354                                 }
1355                                 if (g.getName().isPresent()) {
1356                                     syncGroup.name = g.getName().get();
1357                                 }
1358                                 syncGroup.addMembers(g.getMembers());
1359                                 syncGroup.active = g.isActive();
1360                                 syncGroup.blocked = g.isBlocked();
1361                                 if (g.getColor().isPresent()) {
1362                                     syncGroup.color = g.getColor().get();
1363                                 }
1364
1365                                 if (g.getAvatar().isPresent()) {
1366                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1367                                 }
1368                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1369                                 syncGroup.archived = g.isArchived();
1370                                 account.getGroupStore().updateGroup(syncGroup);
1371                             }
1372                         }
1373                     } catch (Exception e) {
1374                         e.printStackTrace();
1375                     } finally {
1376                         if (tmpFile != null) {
1377                             try {
1378                                 Files.delete(tmpFile.toPath());
1379                             } catch (IOException e) {
1380                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1381                             }
1382                         }
1383                     }
1384                 }
1385                 if (syncMessage.getBlockedList().isPresent()) {
1386                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1387                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1388                         if (address.getNumber().isPresent()) {
1389                             try {
1390                                 setContactBlocked(address.getNumber().get(), true);
1391                             } catch (InvalidNumberException e) {
1392                                 e.printStackTrace();
1393                             }
1394                         }
1395                     }
1396                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1397                         try {
1398                             setGroupBlocked(groupId, true);
1399                         } catch (GroupNotFoundException e) {
1400                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1401                         }
1402                     }
1403                 }
1404                 if (syncMessage.getContacts().isPresent()) {
1405                     File tmpFile = null;
1406                     try {
1407                         tmpFile = IOUtils.createTempFile();
1408                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1409                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1410                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1411                             if (contactsMessage.isComplete()) {
1412                                 account.getContactStore().clear();
1413                             }
1414                             DeviceContact c;
1415                             while ((c = s.read()) != null) {
1416                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1417                                     account.setProfileKey(c.getProfileKey().get());
1418                                 }
1419                                 ContactInfo contact = account.getContactStore().getContact(c.getAddress().getNumber().get());
1420                                 if (contact == null) {
1421                                     contact = new ContactInfo();
1422                                     contact.number = c.getAddress().getNumber().get();
1423                                 }
1424                                 if (c.getName().isPresent()) {
1425                                     contact.name = c.getName().get();
1426                                 }
1427                                 if (c.getColor().isPresent()) {
1428                                     contact.color = c.getColor().get();
1429                                 }
1430                                 if (c.getProfileKey().isPresent()) {
1431                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1432                                 }
1433                                 if (c.getVerified().isPresent()) {
1434                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1435                                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination().getNumber().get(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1436                                 }
1437                                 if (c.getExpirationTimer().isPresent()) {
1438                                     ThreadInfo thread = account.getThreadStore().getThread(c.getAddress().getNumber().get());
1439                                     if (thread == null) {
1440                                         thread = new ThreadInfo();
1441                                         thread.id = c.getAddress().getNumber().get();
1442                                     }
1443                                     thread.messageExpirationTime = c.getExpirationTimer().get();
1444                                     account.getThreadStore().updateThread(thread);
1445                                 }
1446                                 contact.blocked = c.isBlocked();
1447                                 contact.inboxPosition = c.getInboxPosition().orNull();
1448                                 contact.archived = c.isArchived();
1449                                 account.getContactStore().updateContact(contact);
1450
1451                                 if (c.getAvatar().isPresent()) {
1452                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1453                                 }
1454                             }
1455                         }
1456                     } catch (Exception e) {
1457                         e.printStackTrace();
1458                     } finally {
1459                         if (tmpFile != null) {
1460                             try {
1461                                 Files.delete(tmpFile.toPath());
1462                             } catch (IOException e) {
1463                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1464                             }
1465                         }
1466                     }
1467                 }
1468                 if (syncMessage.getVerified().isPresent()) {
1469                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1470                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination().getNumber().get(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1471                 }
1472                 if (syncMessage.getConfiguration().isPresent()) {
1473                     // TODO
1474                 }
1475             }
1476         }
1477     }
1478
1479     private File getContactAvatarFile(String number) {
1480         return new File(avatarsPath, "contact-" + number);
1481     }
1482
1483     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1484         IOUtils.createPrivateDirectories(avatarsPath);
1485         if (attachment.isPointer()) {
1486             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1487             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1488         } else {
1489             SignalServiceAttachmentStream stream = attachment.asStream();
1490             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1491         }
1492     }
1493
1494     private File getGroupAvatarFile(byte[] groupId) {
1495         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1496     }
1497
1498     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1499         IOUtils.createPrivateDirectories(avatarsPath);
1500         if (attachment.isPointer()) {
1501             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1502             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1503         } else {
1504             SignalServiceAttachmentStream stream = attachment.asStream();
1505             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1506         }
1507     }
1508
1509     public File getAttachmentFile(long attachmentId) {
1510         return new File(attachmentsPath, attachmentId + "");
1511     }
1512
1513     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1514         IOUtils.createPrivateDirectories(attachmentsPath);
1515         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1516     }
1517
1518     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1519         if (storePreview && pointer.getPreview().isPresent()) {
1520             File previewFile = new File(outputFile + ".preview");
1521             try (OutputStream output = new FileOutputStream(previewFile)) {
1522                 byte[] preview = pointer.getPreview().get();
1523                 output.write(preview, 0, preview.length);
1524             } catch (FileNotFoundException e) {
1525                 e.printStackTrace();
1526                 return null;
1527             }
1528         }
1529
1530         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1531
1532         File tmpFile = IOUtils.createTempFile();
1533         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1534             try (OutputStream output = new FileOutputStream(outputFile)) {
1535                 byte[] buffer = new byte[4096];
1536                 int read;
1537
1538                 while ((read = input.read(buffer)) != -1) {
1539                     output.write(buffer, 0, read);
1540                 }
1541             } catch (FileNotFoundException e) {
1542                 e.printStackTrace();
1543                 return null;
1544             }
1545         } finally {
1546             try {
1547                 Files.delete(tmpFile.toPath());
1548             } catch (IOException e) {
1549                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1550             }
1551         }
1552         return outputFile;
1553     }
1554
1555     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1556         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1557         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1558     }
1559
1560     @Override
1561     public boolean isRemote() {
1562         return false;
1563     }
1564
1565     private void sendGroups() throws IOException, UntrustedIdentityException {
1566         File groupsFile = IOUtils.createTempFile();
1567
1568         try {
1569             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1570                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1571                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1572                     ThreadInfo info = account.getThreadStore().getThread(Base64.encodeBytes(record.groupId));
1573                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1574                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1575                             record.active, Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1576                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1577                 }
1578             }
1579
1580             if (groupsFile.exists() && groupsFile.length() > 0) {
1581                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1582                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1583                             .withStream(groupsFileStream)
1584                             .withContentType("application/octet-stream")
1585                             .withLength(groupsFile.length())
1586                             .build();
1587
1588                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1589                 }
1590             }
1591         } finally {
1592             try {
1593                 Files.delete(groupsFile.toPath());
1594             } catch (IOException e) {
1595                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1596             }
1597         }
1598     }
1599
1600     public void sendContacts() throws IOException, UntrustedIdentityException {
1601         File contactsFile = IOUtils.createTempFile();
1602
1603         try {
1604             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1605                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1606                 for (ContactInfo record : account.getContactStore().getContacts()) {
1607                     VerifiedMessage verifiedMessage = null;
1608                     ThreadInfo info = account.getThreadStore().getThread(record.number);
1609                     if (getIdentities().containsKey(record.number)) {
1610                         JsonIdentityKeyStore.Identity currentIdentity = null;
1611                         for (JsonIdentityKeyStore.Identity id : getIdentities().get(record.number)) {
1612                             if (currentIdentity == null || id.getDateAdded().after(currentIdentity.getDateAdded())) {
1613                                 currentIdentity = id;
1614                             }
1615                         }
1616                         if (currentIdentity != null) {
1617                             verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1618                         }
1619                     }
1620
1621                     ProfileKey profileKey = null;
1622                     try {
1623                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1624                     } catch (InvalidInputException ignored) {
1625                     }
1626                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1627                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1628                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1629                             Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1630                             Optional.fromNullable(record.inboxPosition), record.archived));
1631                 }
1632
1633                 if (account.getProfileKey() != null) {
1634                     // Send our own profile key as well
1635                     out.write(new DeviceContact(account.getSelfAddress(),
1636                             Optional.<String>absent(), Optional.<SignalServiceAttachmentStream>absent(),
1637                             Optional.<String>absent(), Optional.<VerifiedMessage>absent(),
1638                             Optional.of(account.getProfileKey()),
1639                             false, Optional.<Integer>absent(), Optional.<Integer>absent(), false));
1640                 }
1641             }
1642
1643             if (contactsFile.exists() && contactsFile.length() > 0) {
1644                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1645                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1646                             .withStream(contactsFileStream)
1647                             .withContentType("application/octet-stream")
1648                             .withLength(contactsFile.length())
1649                             .build();
1650
1651                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1652                 }
1653             }
1654         } finally {
1655             try {
1656                 Files.delete(contactsFile.toPath());
1657             } catch (IOException e) {
1658                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1659             }
1660         }
1661     }
1662
1663     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1664         List<SignalServiceAddress> addresses = new ArrayList<>();
1665         for (ContactInfo record : account.getContactStore().getContacts()) {
1666             if (record.blocked) {
1667                 addresses.add(record.getAddress());
1668             }
1669         }
1670         List<byte[]> groupIds = new ArrayList<>();
1671         for (GroupInfo record : account.getGroupStore().getGroups()) {
1672             if (record.blocked) {
1673                 groupIds.add(record.groupId);
1674             }
1675         }
1676         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1677     }
1678
1679     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1680         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1681         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1682     }
1683
1684     public List<ContactInfo> getContacts() {
1685         return account.getContactStore().getContacts();
1686     }
1687
1688     public ContactInfo getContact(String number) {
1689         return account.getContactStore().getContact(number);
1690     }
1691
1692     public GroupInfo getGroup(byte[] groupId) {
1693         return account.getGroupStore().getGroup(groupId);
1694     }
1695
1696     public Map<String, List<JsonIdentityKeyStore.Identity>> getIdentities() {
1697         return account.getSignalProtocolStore().getIdentities();
1698     }
1699
1700     public Pair<String, List<JsonIdentityKeyStore.Identity>> getIdentities(String number) throws InvalidNumberException {
1701         String canonicalizedNumber = Utils.canonicalizeNumber(number, username);
1702         return new Pair<>(canonicalizedNumber, account.getSignalProtocolStore().getIdentities(canonicalizedNumber));
1703     }
1704
1705     /**
1706      * Trust this the identity with this fingerprint
1707      *
1708      * @param name        username of the identity
1709      * @param fingerprint Fingerprint
1710      */
1711     public boolean trustIdentityVerified(String name, byte[] fingerprint) {
1712         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1713         if (ids == null) {
1714             return false;
1715         }
1716         for (JsonIdentityKeyStore.Identity id : ids) {
1717             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1718                 continue;
1719             }
1720
1721             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1722             try {
1723                 sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1724             } catch (IOException | UntrustedIdentityException e) {
1725                 e.printStackTrace();
1726             }
1727             account.save();
1728             return true;
1729         }
1730         return false;
1731     }
1732
1733     /**
1734      * Trust this the identity with this safety number
1735      *
1736      * @param name         username of the identity
1737      * @param safetyNumber Safety number
1738      */
1739     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) {
1740         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1741         if (ids == null) {
1742             return false;
1743         }
1744         for (JsonIdentityKeyStore.Identity id : ids) {
1745             if (!safetyNumber.equals(computeSafetyNumber(name, id.getIdentityKey()))) {
1746                 continue;
1747             }
1748
1749             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1750             try {
1751                 sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1752             } catch (IOException | UntrustedIdentityException e) {
1753                 e.printStackTrace();
1754             }
1755             account.save();
1756             return true;
1757         }
1758         return false;
1759     }
1760
1761     /**
1762      * Trust all keys of this identity without verification
1763      *
1764      * @param name username of the identity
1765      */
1766     public boolean trustIdentityAllKeys(String name) {
1767         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1768         if (ids == null) {
1769             return false;
1770         }
1771         for (JsonIdentityKeyStore.Identity id : ids) {
1772             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1773                 account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1774                 try {
1775                     sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1776                 } catch (IOException | UntrustedIdentityException e) {
1777                     e.printStackTrace();
1778                 }
1779             }
1780         }
1781         account.save();
1782         return true;
1783     }
1784
1785     public String computeSafetyNumber(String theirUsername, IdentityKey theirIdentityKey) {
1786         return Utils.computeSafetyNumber(username, getIdentity(), theirUsername, theirIdentityKey);
1787     }
1788
1789     public interface ReceiveMessageHandler {
1790
1791         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
1792     }
1793 }