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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.Signal;
  22 import org.asamk.signal.AttachmentInvalidException;
  23 import org.asamk.signal.GroupNotFoundException;
  24 import org.asamk.signal.JsonStickerPack;
  25 import org.asamk.signal.NotAGroupMemberException;
  26 import org.asamk.signal.StickerPackInvalidException;
  27 import org.asamk.signal.TrustLevel;
  28 import org.asamk.signal.UserAlreadyExists;
  29 import org.asamk.signal.storage.SignalAccount;
  30 import org.asamk.signal.storage.contacts.ContactInfo;
  31 import org.asamk.signal.storage.groups.GroupInfo;
  32 import org.asamk.signal.storage.groups.JsonGroupStore;
  33 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  34 import org.asamk.signal.storage.threads.ThreadInfo;
  35 import org.asamk.signal.util.IOUtils;
  36 import org.asamk.signal.util.Util;
  37 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  38 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  39 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  40 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  41 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  42 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  43 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  44 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  45 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  46 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  47 import org.signal.libsignal.metadata.SelfSendException;
  48 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  49 import org.signal.zkgroup.InvalidInputException;
  50 import org.signal.zkgroup.VerificationFailedException;
  51 import org.signal.zkgroup.profiles.ProfileKey;
  52 import org.whispersystems.libsignal.IdentityKey;
  53 import org.whispersystems.libsignal.IdentityKeyPair;
  54 import org.whispersystems.libsignal.InvalidKeyException;
  55 import org.whispersystems.libsignal.InvalidMessageException;
  56 import org.whispersystems.libsignal.InvalidVersionException;
  57 import org.whispersystems.libsignal.ecc.Curve;
  58 import org.whispersystems.libsignal.ecc.ECKeyPair;
  59 import org.whispersystems.libsignal.ecc.ECPublicKey;
  60 import org.whispersystems.libsignal.state.PreKeyRecord;
  61 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  62 import org.whispersystems.libsignal.util.KeyHelper;
  63 import org.whispersystems.libsignal.util.Medium;
  64 import org.whispersystems.libsignal.util.Pair;
  65 import org.whispersystems.libsignal.util.guava.Optional;
  66 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  67 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  68 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  69 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  70 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  71 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  72 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  73 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  74 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  75 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  76 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  79 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  80 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  81 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  82 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  83 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  84 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  85 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  86 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  87 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  88 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  89 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  90 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  91 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  92 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  93 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  94 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  95 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  96 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  97 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  98 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  99 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 100 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
 101 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 102 import org.whispersystems.signalservice.api.push.exceptions.AuthorizationFailedException;
 103 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
 104 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
 105 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 106 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 107 import org.whispersystems.signalservice.api.util.SleepTimer;
 108 import org.whispersystems.signalservice.api.util.StreamDetails;
 109 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 110 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 111 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 112 import org.whispersystems.signalservice.internal.util.Hex;
 113 import org.whispersystems.util.Base64;
 114
 115 import java.io.File;
 116 import java.io.FileInputStream;
 117 import java.io.FileNotFoundException;
 118 import java.io.FileOutputStream;
 119 import java.io.IOException;
 120 import java.io.InputStream;
 121 import java.io.OutputStream;
 122 import java.net.URI;
 123 import java.net.URISyntaxException;
 124 import java.net.URLEncoder;
 125 import java.nio.file.Files;
 126 import java.nio.file.Paths;
 127 import java.nio.file.StandardCopyOption;
 128 import java.util.ArrayList;
 129 import java.util.Arrays;
 130 import java.util.Collection;
 131 import java.util.Collections;
 132 import java.util.Date;
 133 import java.util.HashSet;
 134 import java.util.LinkedList;
 135 import java.util.List;
 136 import java.util.Locale;
 137 import java.util.Map;
 138 import java.util.Objects;
 139 import java.util.Set;
 140 import java.util.concurrent.TimeUnit;
 141 import java.util.concurrent.TimeoutException;
 142 import java.util.zip.ZipEntry;
 143 import java.util.zip.ZipFile;
 144
 145 public class Manager implements Signal {
 146
 147     private static final SignalServiceProfile.Capabilities capabilities = new SignalServiceProfile.Capabilities(false, false);
 148
 149     private final String settingsPath;
 150     private final String dataPath;
 151     private final String attachmentsPath;
 152     private final String avatarsPath;
 153     private final SleepTimer timer = new UptimeSleepTimer();
 154
 155     private SignalAccount account;
 156     private String username;
 157     private SignalServiceAccountManager accountManager;
 158     private SignalServiceMessagePipe messagePipe = null;
 159     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 160
 161     public Manager(String username, String settingsPath) {
 162         this.username = username;
 163         this.settingsPath = settingsPath;
 164         this.dataPath = this.settingsPath + "/data";
 165         this.attachmentsPath = this.settingsPath + "/attachments";
 166         this.avatarsPath = this.settingsPath + "/avatars";
 167
 168     }
 169
 170     public String getUsername() {
 171         return username;
 172     }
 173
 174     public SignalServiceAddress getSelfAddress() {
 175         return account.getSelfAddress();
 176     }
 177
 178     private SignalServiceAccountManager getSignalServiceAccountManager() {
 179         return new SignalServiceAccountManager(BaseConfig.serviceConfiguration, null, account.getUsername(), account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 180     }
 181
 182     private IdentityKey getIdentity() {
 183         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
 184     }
 185
 186     public int getDeviceId() {
 187         return account.getDeviceId();
 188     }
 189
 190     private String getMessageCachePath() {
 191         return this.dataPath + "/" + username + ".d/msg-cache";
 192     }
 193
 194     private String getMessageCachePath(String sender) {
 195         return getMessageCachePath() + "/" + sender.replace("/", "_");
 196     }
 197
 198     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 199         String cachePath = getMessageCachePath(sender);
 200         IOUtils.createPrivateDirectories(cachePath);
 201         return new File(cachePath + "/" + now + "_" + timestamp);
 202     }
 203
 204     public boolean userHasKeys() {
 205         return account != null && account.getSignalProtocolStore() != null;
 206     }
 207
 208     public void init() throws IOException {
 209         if (!SignalAccount.userExists(dataPath, username)) {
 210             return;
 211         }
 212         account = SignalAccount.load(dataPath, username);
 213
 214         migrateLegacyConfigs();
 215
 216         accountManager = getSignalServiceAccountManager();
 217         try {
 218             if (account.isRegistered() && accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 219                 refreshPreKeys();
 220                 account.save();
 221             }
 222         } catch (AuthorizationFailedException e) {
 223             System.err.println("Authorization failed, was the number registered elsewhere?");
 224             throw e;
 225         }
 226     }
 227
 228     private void migrateLegacyConfigs() {
 229         // Copy group avatars that were previously stored in the attachments folder
 230         // to the new avatar folder
 231         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 232             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 233                 File avatarFile = getGroupAvatarFile(g.groupId);
 234                 File attachmentFile = getAttachmentFile(g.getAvatarId());
 235                 if (!avatarFile.exists() && attachmentFile.exists()) {
 236                     try {
 237                         IOUtils.createPrivateDirectories(avatarsPath);
 238                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 239                     } catch (Exception e) {
 240                         // Ignore
 241                     }
 242                 }
 243             }
 244             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 245             account.save();
 246         }
 247         if (account.getProfileKey() == null) {
 248             // Old config file, creating new profile key
 249             account.setProfileKey(KeyUtils.createProfileKey());
 250             account.save();
 251         }
 252     }
 253
 254     private void createNewIdentity() throws IOException {
 255         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 256         int registrationId = KeyHelper.generateRegistrationId(false);
 257         if (username == null) {
 258             account = SignalAccount.createTemporaryAccount(identityKey, registrationId);
 259         } else {
 260             ProfileKey profileKey = KeyUtils.createProfileKey();
 261             account = SignalAccount.create(dataPath, username, identityKey, registrationId, profileKey);
 262             account.save();
 263         }
 264     }
 265
 266     public boolean isRegistered() {
 267         return account != null && account.isRegistered();
 268     }
 269
 270     public void register(boolean voiceVerification) throws IOException {
 271         if (account == null) {
 272             createNewIdentity();
 273         }
 274         account.setPassword(KeyUtils.createPassword());
 275         accountManager = getSignalServiceAccountManager();
 276
 277         if (voiceVerification) {
 278             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 279         } else {
 280             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 281         }
 282
 283         account.setRegistered(false);
 284         account.save();
 285     }
 286
 287     public void updateAccountAttributes() throws IOException {
 288         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, capabilities);
 289     }
 290
 291     public void setProfileName(String name) throws IOException {
 292         accountManager.setProfileName(account.getProfileKey(), name);
 293     }
 294
 295     public void setProfileAvatar(File avatar) throws IOException {
 296         final StreamDetails streamDetails = Utils.createStreamDetailsFromFile(avatar);
 297         accountManager.setProfileAvatar(account.getProfileKey(), streamDetails);
 298         streamDetails.getStream().close();
 299     }
 300
 301     public void removeProfileAvatar() throws IOException {
 302         accountManager.setProfileAvatar(account.getProfileKey(), null);
 303     }
 304
 305     public void unregister() throws IOException {
 306         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 307         // If this is the master device, other users can't send messages to this number anymore.
 308         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 309         accountManager.setGcmId(Optional.absent());
 310
 311         account.setRegistered(false);
 312         account.save();
 313     }
 314
 315     public String getDeviceLinkUri() throws TimeoutException, IOException {
 316         if (account == null) {
 317             createNewIdentity();
 318         }
 319         account.setPassword(KeyUtils.createPassword());
 320         accountManager = getSignalServiceAccountManager();
 321         String uuid = accountManager.getNewDeviceUuid();
 322
 323         return Utils.createDeviceLinkUri(new Utils.DeviceLinkInfo(uuid, getIdentity().getPublicKey()));
 324     }
 325
 326     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 327         account.setSignalingKey(KeyUtils.createSignalingKey());
 328         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 329
 330         username = ret.getNumber();
 331         // TODO do this check before actually registering
 332         if (SignalAccount.userExists(dataPath, username)) {
 333             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 334         }
 335
 336         // Create new account with the synced identity
 337         byte[] profileKeyBytes = ret.getProfileKey();
 338         ProfileKey profileKey;
 339         if (profileKeyBytes == null) {
 340             profileKey = KeyUtils.createProfileKey();
 341         } else {
 342             try {
 343                 profileKey = new ProfileKey(profileKeyBytes);
 344             } catch (InvalidInputException e) {
 345                 throw new IOException("Received invalid profileKey", e);
 346             }
 347         }
 348         account = SignalAccount.createLinkedAccount(dataPath, username, account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 349
 350         refreshPreKeys();
 351
 352         requestSyncGroups();
 353         requestSyncContacts();
 354         requestSyncBlocked();
 355         requestSyncConfiguration();
 356
 357         account.save();
 358     }
 359
 360     public List<DeviceInfo> getLinkedDevices() throws IOException {
 361         List<DeviceInfo> devices = accountManager.getDevices();
 362         account.setMultiDevice(devices.size() > 1);
 363         account.save();
 364         return devices;
 365     }
 366
 367     public void removeLinkedDevices(int deviceId) throws IOException {
 368         accountManager.removeDevice(deviceId);
 369         List<DeviceInfo> devices = accountManager.getDevices();
 370         account.setMultiDevice(devices.size() > 1);
 371         account.save();
 372     }
 373
 374     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 375         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 376
 377         addDevice(info.deviceIdentifier, info.deviceKey);
 378     }
 379
 380     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 381         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 382         String verificationCode = accountManager.getNewDeviceVerificationCode();
 383
 384         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 385         account.setMultiDevice(true);
 386         account.save();
 387     }
 388
 389     private List<PreKeyRecord> generatePreKeys() {
 390         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 391
 392         final int offset = account.getPreKeyIdOffset();
 393         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 394             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 395             ECKeyPair keyPair = Curve.generateKeyPair();
 396             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 397
 398             records.add(record);
 399         }
 400
 401         account.addPreKeys(records);
 402         account.save();
 403
 404         return records;
 405     }
 406
 407     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 408         try {
 409             ECKeyPair keyPair = Curve.generateKeyPair();
 410             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 411             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 412
 413             account.addSignedPreKey(record);
 414             account.save();
 415
 416             return record;
 417         } catch (InvalidKeyException e) {
 418             throw new AssertionError(e);
 419         }
 420     }
 421
 422     public void verifyAccount(String verificationCode, String pin) throws IOException {
 423         verificationCode = verificationCode.replace("-", "");
 424         account.setSignalingKey(KeyUtils.createSignalingKey());
 425         // TODO make unrestricted unidentified access configurable
 426         accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, capabilities);
 427
 428         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 429         account.setRegistered(true);
 430         account.setRegistrationLockPin(pin);
 431
 432         refreshPreKeys();
 433         account.save();
 434     }
 435
 436     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 437         if (pin.isPresent()) {
 438             account.setRegistrationLockPin(pin.get());
 439             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 440         } else {
 441             account.setRegistrationLockPin(null);
 442             accountManager.removeV1Pin();
 443         }
 444         account.save();
 445     }
 446
 447     private void refreshPreKeys() throws IOException {
 448         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 449         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 450         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 451
 452         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 453     }
 454
 455     private SignalServiceMessageReceiver getMessageReceiver() {
 456         return new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
 457     }
 458
 459     private SignalServiceMessageSender getMessageSender() {
 460         return new SignalServiceMessageSender(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 461                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent());
 462     }
 463
 464     private SignalServiceProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 465         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 466                 : messagePipe;
 467
 468         if (pipe != null) {
 469             try {
 470                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 471             } catch (IOException ignored) {
 472             }
 473         }
 474
 475         SignalServiceMessageReceiver receiver = getMessageReceiver();
 476         try {
 477             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 478         } catch (VerificationFailedException e) {
 479             throw new AssertionError(e);
 480         }
 481     }
 482
 483     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 484         File file = getGroupAvatarFile(groupId);
 485         if (!file.exists()) {
 486             return Optional.absent();
 487         }
 488
 489         return Optional.of(Utils.createAttachment(file));
 490     }
 491
 492     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 493         File file = getContactAvatarFile(number);
 494         if (!file.exists()) {
 495             return Optional.absent();
 496         }
 497
 498         return Optional.of(Utils.createAttachment(file));
 499     }
 500
 501     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 502         GroupInfo g = account.getGroupStore().getGroup(groupId);
 503         if (g == null) {
 504             throw new GroupNotFoundException(groupId);
 505         }
 506         if (!g.isMember(account.getSelfAddress())) {
 507             throw new NotAGroupMemberException(groupId, g.name);
 508         }
 509         return g;
 510     }
 511
 512     public List<GroupInfo> getGroups() {
 513         return account.getGroupStore().getGroups();
 514     }
 515
 516     @Override
 517     public void sendGroupMessage(String messageText, List<String> attachments,
 518                                  byte[] groupId)
 519             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 520         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 521         if (attachments != null) {
 522             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 523         }
 524         if (groupId != null) {
 525             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 526                     .withId(groupId)
 527                     .build();
 528             messageBuilder.asGroupMessage(group);
 529         }
 530         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 531         if (thread != null) {
 532             messageBuilder.withExpiration(thread.messageExpirationTime);
 533         }
 534
 535         final GroupInfo g = getGroupForSending(groupId);
 536
 537         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 538     }
 539
 540     public void sendGroupMessageReaction(String emoji, boolean remove, SignalServiceAddress targetAuthor,
 541                                          long targetSentTimestamp, byte[] groupId)
 542             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 543         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, targetAuthor, targetSentTimestamp);
 544         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 545                 .withReaction(reaction)
 546                 .withProfileKey(account.getProfileKey().serialize());
 547         if (groupId != null) {
 548             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 549                     .withId(groupId)
 550                     .build();
 551             messageBuilder.asGroupMessage(group);
 552         }
 553         final GroupInfo g = getGroupForSending(groupId);
 554         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 555     }
 556
 557     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 558         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 559                 .withId(groupId)
 560                 .build();
 561
 562         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 563                 .asGroupMessage(group);
 564
 565         final GroupInfo g = getGroupForSending(groupId);
 566         g.removeMember(account.getSelfAddress());
 567         account.getGroupStore().updateGroup(g);
 568
 569         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 570     }
 571
 572     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 573         GroupInfo g;
 574         if (groupId == null) {
 575             // Create new group
 576             g = new GroupInfo(KeyUtils.createGroupId());
 577             g.addMembers(Collections.singleton(account.getSelfAddress()));
 578         } else {
 579             g = getGroupForSending(groupId);
 580         }
 581
 582         if (name != null) {
 583             g.name = name;
 584         }
 585
 586         if (members != null) {
 587             final Set<String> newE164Members = new HashSet<>();
 588             for (SignalServiceAddress member : members) {
 589                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 590                     continue;
 591                 }
 592                 newE164Members.add(member.getNumber().get());
 593             }
 594
 595             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 596             if (contacts.size() != newE164Members.size()) {
 597                 // Some of the new members are not registered on Signal
 598                 for (ContactTokenDetails contact : contacts) {
 599                     newE164Members.remove(contact.getNumber());
 600                 }
 601                 System.err.println("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 602                 System.err.println("Aborting…");
 603                 System.exit(1);
 604             }
 605
 606             g.addMembers(members);
 607         }
 608
 609         if (avatarFile != null) {
 610             IOUtils.createPrivateDirectories(avatarsPath);
 611             File aFile = getGroupAvatarFile(g.groupId);
 612             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 613         }
 614
 615         account.getGroupStore().updateGroup(g);
 616
 617         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 618
 619         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 620         return g.groupId;
 621     }
 622
 623     private void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 624         if (groupId == null) {
 625             return;
 626         }
 627         GroupInfo g = getGroupForSending(groupId);
 628
 629         if (!g.isMember(recipient)) {
 630             return;
 631         }
 632
 633         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 634
 635         // Send group message only to the recipient who requested it
 636         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 637     }
 638
 639     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 640         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 641                 .withId(g.groupId)
 642                 .withName(g.name)
 643                 .withMembers(new ArrayList<>(g.getMembers()));
 644
 645         File aFile = getGroupAvatarFile(g.groupId);
 646         if (aFile.exists()) {
 647             try {
 648                 group.withAvatar(Utils.createAttachment(aFile));
 649             } catch (IOException e) {
 650                 throw new AttachmentInvalidException(aFile.toString(), e);
 651             }
 652         }
 653
 654         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 655                 .asGroupMessage(group.build());
 656
 657         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(g.groupId));
 658         if (thread != null) {
 659             messageBuilder.withExpiration(thread.messageExpirationTime);
 660         }
 661
 662         return messageBuilder;
 663     }
 664
 665     private void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 666         if (groupId == null) {
 667             return;
 668         }
 669
 670         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 671                 .withId(groupId);
 672
 673         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 674                 .asGroupMessage(group.build());
 675
 676         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 677         if (thread != null) {
 678             messageBuilder.withExpiration(thread.messageExpirationTime);
 679         }
 680
 681         // Send group info request message to the recipient who sent us a message with this groupId
 682         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 683     }
 684
 685     @Override
 686     public void sendMessage(String message, List<String> attachments, String recipient)
 687             throws EncapsulatedExceptions, AttachmentInvalidException, IOException, InvalidNumberException {
 688         List<String> recipients = new ArrayList<>(1);
 689         recipients.add(recipient);
 690         sendMessage(message, attachments, recipients);
 691     }
 692
 693     @Override
 694     public void sendMessage(String messageText, List<String> attachments,
 695                             List<String> recipients)
 696             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 697         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 698         if (attachments != null) {
 699             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 700
 701             // Upload attachments here, so we only upload once even for multiple recipients
 702             SignalServiceMessageSender messageSender = getMessageSender();
 703             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 704             for (SignalServiceAttachment attachment : attachmentStreams) {
 705                 if (attachment.isStream()) {
 706                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 707                 } else if (attachment.isPointer()) {
 708                     attachmentPointers.add(attachment.asPointer());
 709                 }
 710             }
 711
 712             messageBuilder.withAttachments(attachmentPointers);
 713         }
 714         messageBuilder.withProfileKey(account.getProfileKey().serialize());
 715         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 716     }
 717
 718     public void sendMessageReaction(String emoji, boolean remove, SignalServiceAddress targetAuthor,
 719                                     long targetSentTimestamp, List<String> recipients)
 720             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 721         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, targetAuthor, targetSentTimestamp);
 722         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 723                 .withReaction(reaction)
 724                 .withProfileKey(account.getProfileKey().serialize());
 725         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 726     }
 727
 728     @Override
 729     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 730         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 731                 .asEndSessionMessage();
 732
 733         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 734     }
 735
 736     @Override
 737     public String getContactName(String number) throws InvalidNumberException {
 738         String canonicalizedNumber = Utils.canonicalizeNumber(number, account.getUsername());
 739         ContactInfo contact = account.getContactStore().getContact(new SignalServiceAddress(null, canonicalizedNumber));
 740         if (contact == null) {
 741             return "";
 742         } else {
 743             return contact.name;
 744         }
 745     }
 746
 747     @Override
 748     public void setContactName(String number, String name) throws InvalidNumberException {
 749         String canonicalizedNumber = Utils.canonicalizeNumber(number, account.getUsername());
 750         final SignalServiceAddress address = new SignalServiceAddress(null, canonicalizedNumber);
 751         ContactInfo contact = account.getContactStore().getContact(address);
 752         if (contact == null) {
 753             contact = new ContactInfo(address);
 754             System.err.println("Add contact " + canonicalizedNumber + " named " + name);
 755         } else {
 756             System.err.println("Updating contact " + canonicalizedNumber + " name " + contact.name + " -> " + name);
 757         }
 758         contact.name = name;
 759         account.getContactStore().updateContact(contact);
 760         account.save();
 761     }
 762
 763     @Override
 764     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 765         number = Utils.canonicalizeNumber(number, account.getUsername());
 766         final SignalServiceAddress address = new SignalServiceAddress(null, number);
 767         ContactInfo contact = account.getContactStore().getContact(address);
 768         if (contact == null) {
 769             contact = new ContactInfo(address);
 770             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + number);
 771         } else {
 772             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + number);
 773         }
 774         contact.blocked = blocked;
 775         account.getContactStore().updateContact(contact);
 776         account.save();
 777     }
 778
 779     @Override
 780     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 781         GroupInfo group = getGroup(groupId);
 782         if (group == null) {
 783             throw new GroupNotFoundException(groupId);
 784         } else {
 785             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 786             group.blocked = blocked;
 787             account.getGroupStore().updateGroup(group);
 788             account.save();
 789         }
 790     }
 791
 792     @Override
 793     public List<byte[]> getGroupIds() {
 794         List<GroupInfo> groups = getGroups();
 795         List<byte[]> ids = new ArrayList<>(groups.size());
 796         for (GroupInfo group : groups) {
 797             ids.add(group.groupId);
 798         }
 799         return ids;
 800     }
 801
 802     @Override
 803     public String getGroupName(byte[] groupId) {
 804         GroupInfo group = getGroup(groupId);
 805         if (group == null) {
 806             return "";
 807         } else {
 808             return group.name;
 809         }
 810     }
 811
 812     @Override
 813     public List<String> getGroupMembers(byte[] groupId) {
 814         GroupInfo group = getGroup(groupId);
 815         if (group == null) {
 816             return Collections.emptyList();
 817         } else {
 818             return new ArrayList<>(group.getMembersE164());
 819         }
 820     }
 821
 822     @Override
 823     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException {
 824         if (groupId.length == 0) {
 825             groupId = null;
 826         }
 827         if (name.isEmpty()) {
 828             name = null;
 829         }
 830         if (members.size() == 0) {
 831             members = null;
 832         }
 833         if (avatar.isEmpty()) {
 834             avatar = null;
 835         }
 836         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 837     }
 838
 839     /**
 840      * Change the expiration timer for a thread (number of groupId)
 841      */
 842     public void setExpirationTimer(String numberOrGroupId, int messageExpirationTimer) {
 843         ThreadInfo thread = account.getThreadStore().getThread(numberOrGroupId);
 844         thread.messageExpirationTime = messageExpirationTimer;
 845         account.getThreadStore().updateThread(thread);
 846     }
 847
 848     /**
 849      * Upload the sticker pack from path.
 850      *
 851      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 852      * @return if successful, returns the URL to install the sticker pack in the signal app
 853      */
 854     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 855         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 856
 857         SignalServiceMessageSender messageSender = getMessageSender();
 858
 859         byte[] packKey = KeyUtils.createStickerUploadKey();
 860         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 861
 862         try {
 863             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 864                     .toString();
 865         } catch (URISyntaxException e) {
 866             throw new AssertionError(e);
 867         }
 868     }
 869
 870     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 871         ZipFile zip = null;
 872         String rootPath = null;
 873
 874         final File file = new File(path);
 875         if (file.getName().endsWith(".zip")) {
 876             zip = new ZipFile(file);
 877         } else if (file.getName().equals("manifest.json")) {
 878             rootPath = file.getParent();
 879         } else {
 880             throw new StickerPackInvalidException("Could not find manifest.json");
 881         }
 882
 883         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 884
 885         if (pack.stickers == null) {
 886             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 887         }
 888
 889         if (pack.stickers.isEmpty()) {
 890             throw new StickerPackInvalidException("Must include stickers.");
 891         }
 892
 893         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 894         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 895             if (sticker.file == null) {
 896                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 897             }
 898
 899             Pair<InputStream, Long> data;
 900             try {
 901                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 902             } catch (IOException ignored) {
 903                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 904             }
 905
 906             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 907             stickers.add(stickerInfo);
 908         }
 909
 910         StickerInfo cover = null;
 911         if (pack.cover != null) {
 912             if (pack.cover.file == null) {
 913                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 914             }
 915
 916             Pair<InputStream, Long> data;
 917             try {
 918                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 919             } catch (IOException ignored) {
 920                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 921             }
 922
 923             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 924         }
 925
 926         return new SignalServiceStickerManifestUpload(
 927                 pack.title,
 928                 pack.author,
 929                 cover,
 930                 stickers);
 931     }
 932
 933     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 934         InputStream inputStream;
 935         if (zip != null) {
 936             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 937         } else {
 938             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 939         }
 940         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 941     }
 942
 943     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 944         if (zip != null) {
 945             final ZipEntry entry = zip.getEntry(subfile);
 946             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 947         } else {
 948             final File file = new File(rootPath, subfile);
 949             return new Pair<>(new FileInputStream(file), file.length());
 950         }
 951     }
 952
 953     private void requestSyncGroups() throws IOException {
 954         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 955         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 956         try {
 957             sendSyncMessage(message);
 958         } catch (UntrustedIdentityException e) {
 959             e.printStackTrace();
 960         }
 961     }
 962
 963     private void requestSyncContacts() throws IOException {
 964         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 965         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 966         try {
 967             sendSyncMessage(message);
 968         } catch (UntrustedIdentityException e) {
 969             e.printStackTrace();
 970         }
 971     }
 972
 973     private void requestSyncBlocked() throws IOException {
 974         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 975         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 976         try {
 977             sendSyncMessage(message);
 978         } catch (UntrustedIdentityException e) {
 979             e.printStackTrace();
 980         }
 981     }
 982
 983     private void requestSyncConfiguration() throws IOException {
 984         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 985         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 986         try {
 987             sendSyncMessage(message);
 988         } catch (UntrustedIdentityException e) {
 989             e.printStackTrace();
 990         }
 991     }
 992
 993     private byte[] getSenderCertificate() throws IOException {
 994         byte[] certificate = accountManager.getSenderCertificate();
 995         // TODO cache for a day
 996         return certificate;
 997     }
 998
 999     private byte[] getSelfUnidentifiedAccessKey() {
1000         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
1001     }
1002
1003     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
1004         ProfileCipher profileCipher = new ProfileCipher(profileKey);
1005         try {
1006             return new SignalProfile(
1007                     encryptedProfile.getIdentityKey(),
1008                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
1009                     encryptedProfile.getAvatar(),
1010                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
1011                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
1012             );
1013         } catch (InvalidCiphertextException e) {
1014             return null;
1015         }
1016     }
1017
1018     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) throws IOException {
1019         ContactInfo contact = account.getContactStore().getContact(recipient);
1020         if (contact == null || contact.profileKey == null) {
1021             return null;
1022         }
1023         ProfileKey theirProfileKey;
1024         try {
1025             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
1026         } catch (InvalidInputException e) {
1027             throw new AssertionError(e);
1028         }
1029         SignalProfile targetProfile = decryptProfile(getRecipientProfile(recipient, Optional.absent()), theirProfileKey);
1030
1031         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
1032             return null;
1033         }
1034
1035         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
1036             return KeyUtils.createUnrestrictedUnidentifiedAccess();
1037         }
1038
1039         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
1040     }
1041
1042     private Optional<UnidentifiedAccessPair> getAccessForSync() throws IOException {
1043         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1044         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1045
1046         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1047             return Optional.absent();
1048         }
1049
1050         try {
1051             return Optional.of(new UnidentifiedAccessPair(
1052                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1053                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1054             ));
1055         } catch (InvalidCertificateException e) {
1056             return Optional.absent();
1057         }
1058     }
1059
1060     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) throws IOException {
1061         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1062         for (SignalServiceAddress recipient : recipients) {
1063             result.add(getAccessFor(recipient));
1064         }
1065         return result;
1066     }
1067
1068     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) throws IOException {
1069         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1070         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1071         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1072
1073         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1074             return Optional.absent();
1075         }
1076
1077         try {
1078             return Optional.of(new UnidentifiedAccessPair(
1079                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1080                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1081             ));
1082         } catch (InvalidCertificateException e) {
1083             return Optional.absent();
1084         }
1085     }
1086
1087     private void sendSyncMessage(SignalServiceSyncMessage message)
1088             throws IOException, UntrustedIdentityException {
1089         SignalServiceMessageSender messageSender = getMessageSender();
1090         try {
1091             messageSender.sendMessage(message, getAccessForSync());
1092         } catch (UntrustedIdentityException e) {
1093             account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1094             throw e;
1095         }
1096     }
1097
1098     /**
1099      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1100      */
1101     private void sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1102             throws EncapsulatedExceptions, IOException {
1103         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1104
1105         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1106         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1107         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1108
1109         for (SendMessageResult result : results) {
1110             if (result.isUnregisteredFailure()) {
1111                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getNumber().get(), null));
1112             } else if (result.isNetworkFailure()) {
1113                 networkExceptions.add(new NetworkFailureException(result.getAddress().getNumber().get(), null));
1114             } else if (result.getIdentityFailure() != null) {
1115                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getNumber().get(), result.getIdentityFailure().getIdentityKey()));
1116             }
1117         }
1118         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1119             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1120         }
1121     }
1122
1123     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1124         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1125         final String username = account.getUsername();
1126
1127         for (String number : numbers) {
1128             String canonicalizedNumber = Utils.canonicalizeNumber(number, username);
1129             if (canonicalizedNumber.equals(username)) {
1130                 signalServiceAddresses.add(account.getSelfAddress());
1131             } else {
1132                 // TODO get corresponding uuid
1133                 signalServiceAddresses.add(new SignalServiceAddress(null, canonicalizedNumber));
1134             }
1135         }
1136         return signalServiceAddresses;
1137     }
1138
1139     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1140             throws IOException {
1141         if (messagePipe == null) {
1142             messagePipe = getMessageReceiver().createMessagePipe();
1143         }
1144         if (unidentifiedMessagePipe == null) {
1145             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1146         }
1147         SignalServiceDataMessage message = null;
1148         try {
1149             SignalServiceMessageSender messageSender = getMessageSender();
1150
1151             message = messageBuilder.build();
1152             if (message.getGroupInfo().isPresent()) {
1153                 try {
1154                     final boolean isRecipientUpdate = false;
1155                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1156                     for (SendMessageResult r : result) {
1157                         if (r.getIdentityFailure() != null) {
1158                             account.getSignalProtocolStore().saveIdentity(r.getAddress().getNumber().get(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1159                         }
1160                     }
1161                     return result;
1162                 } catch (UntrustedIdentityException e) {
1163                     account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1164                     return Collections.emptyList();
1165                 }
1166             } else if (recipients.size() == 1 && recipients.contains(account.getSelfAddress())) {
1167                 SignalServiceAddress recipient = account.getSelfAddress();
1168                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1169                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1170                         message.getTimestamp(),
1171                         message,
1172                         message.getExpiresInSeconds(),
1173                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1174                         false);
1175                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1176
1177                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1178                 try {
1179                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
1180                 } catch (UntrustedIdentityException e) {
1181                     account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1182                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
1183                 }
1184                 return results;
1185             } else {
1186                 // Send to all individually, so sync messages are sent correctly
1187                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1188                 for (SignalServiceAddress address : recipients) {
1189                     ThreadInfo thread = account.getThreadStore().getThread(address.getNumber().get());
1190                     if (thread != null) {
1191                         messageBuilder.withExpiration(thread.messageExpirationTime);
1192                     } else {
1193                         messageBuilder.withExpiration(0);
1194                     }
1195                     message = messageBuilder.build();
1196                     try {
1197                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
1198                         results.add(result);
1199                     } catch (UntrustedIdentityException e) {
1200                         account.getSignalProtocolStore().saveIdentity(e.getIdentifier(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1201                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
1202                     }
1203                 }
1204                 return results;
1205             }
1206         } finally {
1207             if (message != null && message.isEndSession()) {
1208                 for (SignalServiceAddress recipient : recipients) {
1209                     handleEndSession(recipient.getNumber().get());
1210                 }
1211             }
1212             account.save();
1213         }
1214     }
1215
1216     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, ProtocolUntrustedIdentityException, SelfSendException, UnsupportedDataMessageException {
1217         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1218         try {
1219             return cipher.decrypt(envelope);
1220         } catch (ProtocolUntrustedIdentityException e) {
1221             // TODO We don't get the new untrusted identity from ProtocolUntrustedIdentityException anymore ... we need to get it from somewhere else
1222 //            account.getSignalProtocolStore().saveIdentity(e.getSender(), e.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1223             throw e;
1224         }
1225     }
1226
1227     private void handleEndSession(String source) {
1228         account.getSignalProtocolStore().deleteAllSessions(source);
1229     }
1230
1231     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1232         String threadId;
1233         if (message.getGroupInfo().isPresent()) {
1234             SignalServiceGroup groupInfo = message.getGroupInfo().get();
1235             threadId = Base64.encodeBytes(groupInfo.getGroupId());
1236             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1237             switch (groupInfo.getType()) {
1238                 case UPDATE:
1239                     if (group == null) {
1240                         group = new GroupInfo(groupInfo.getGroupId());
1241                     }
1242
1243                     if (groupInfo.getAvatar().isPresent()) {
1244                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1245                         if (avatar.isPointer()) {
1246                             try {
1247                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1248                             } catch (IOException | InvalidMessageException e) {
1249                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
1250                             }
1251                         }
1252                     }
1253
1254                     if (groupInfo.getName().isPresent()) {
1255                         group.name = groupInfo.getName().get();
1256                     }
1257
1258                     if (groupInfo.getMembers().isPresent()) {
1259                         group.addMembers(groupInfo.getMembers().get());
1260                     }
1261
1262                     account.getGroupStore().updateGroup(group);
1263                     break;
1264                 case DELIVER:
1265                     if (group == null) {
1266                         try {
1267                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1268                         } catch (IOException | EncapsulatedExceptions e) {
1269                             e.printStackTrace();
1270                         }
1271                     }
1272                     break;
1273                 case QUIT:
1274                     if (group == null) {
1275                         try {
1276                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1277                         } catch (IOException | EncapsulatedExceptions e) {
1278                             e.printStackTrace();
1279                         }
1280                     } else {
1281                         group.removeMember(source);
1282                         account.getGroupStore().updateGroup(group);
1283                     }
1284                     break;
1285                 case REQUEST_INFO:
1286                     if (group != null) {
1287                         try {
1288                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1289                         } catch (IOException | EncapsulatedExceptions e) {
1290                             e.printStackTrace();
1291                         } catch (NotAGroupMemberException e) {
1292                             // We have left this group, so don't send a group update message
1293                         }
1294                     }
1295                     break;
1296             }
1297         } else {
1298             if (isSync) {
1299                 threadId = destination.getNumber().get();
1300             } else {
1301                 threadId = source.getNumber().get();
1302             }
1303         }
1304         if (message.isEndSession()) {
1305             handleEndSession(isSync ? destination.getNumber().get() : source.getNumber().get());
1306         }
1307         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1308             ThreadInfo thread = account.getThreadStore().getThread(threadId);
1309             if (thread == null) {
1310                 thread = new ThreadInfo();
1311                 thread.id = threadId;
1312             }
1313             if (thread.messageExpirationTime != message.getExpiresInSeconds()) {
1314                 thread.messageExpirationTime = message.getExpiresInSeconds();
1315                 account.getThreadStore().updateThread(thread);
1316             }
1317         }
1318         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1319             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1320                 if (attachment.isPointer()) {
1321                     try {
1322                         retrieveAttachment(attachment.asPointer());
1323                     } catch (IOException | InvalidMessageException e) {
1324                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
1325                     }
1326                 }
1327             }
1328         }
1329         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1330             if (source.equals(account.getSelfAddress())) {
1331                 try {
1332                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1333                 } catch (InvalidInputException ignored) {
1334                 }
1335             }
1336             ContactInfo contact = account.getContactStore().getContact(source);
1337             if (contact == null) {
1338                 contact = new ContactInfo(source);
1339             }
1340             contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1341             account.getContactStore().updateContact(contact);
1342         }
1343         if (message.getPreviews().isPresent()) {
1344             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1345             for (SignalServiceDataMessage.Preview preview : previews) {
1346                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1347                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1348                     try {
1349                         retrieveAttachment(attachment);
1350                     } catch (IOException | InvalidMessageException e) {
1351                         System.err.println("Failed to retrieve attachment (" + attachment.getId() + "): " + e.getMessage());
1352                     }
1353                 }
1354             }
1355         }
1356     }
1357
1358     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1359         final File cachePath = new File(getMessageCachePath());
1360         if (!cachePath.exists()) {
1361             return;
1362         }
1363         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1364             if (!dir.isDirectory()) {
1365                 continue;
1366             }
1367
1368             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1369                 if (!fileEntry.isFile()) {
1370                     continue;
1371                 }
1372                 SignalServiceEnvelope envelope;
1373                 try {
1374                     envelope = Utils.loadEnvelope(fileEntry);
1375                     if (envelope == null) {
1376                         continue;
1377                     }
1378                 } catch (IOException e) {
1379                     e.printStackTrace();
1380                     continue;
1381                 }
1382                 SignalServiceContent content = null;
1383                 if (!envelope.isReceipt()) {
1384                     try {
1385                         content = decryptMessage(envelope);
1386                     } catch (Exception e) {
1387                         continue;
1388                     }
1389                     handleMessage(envelope, content, ignoreAttachments);
1390                 }
1391                 account.save();
1392                 handler.handleMessage(envelope, content, null);
1393                 try {
1394                     Files.delete(fileEntry.toPath());
1395                 } catch (IOException e) {
1396                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1397                 }
1398             }
1399             // Try to delete directory if empty
1400             dir.delete();
1401         }
1402     }
1403
1404     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1405         retryFailedReceivedMessages(handler, ignoreAttachments);
1406         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1407
1408         try {
1409             if (messagePipe == null) {
1410                 messagePipe = messageReceiver.createMessagePipe();
1411             }
1412
1413             while (true) {
1414                 SignalServiceEnvelope envelope;
1415                 SignalServiceContent content = null;
1416                 Exception exception = null;
1417                 final long now = new Date().getTime();
1418                 try {
1419                     envelope = messagePipe.read(timeout, unit, envelope1 -> {
1420                         // store message on disk, before acknowledging receipt to the server
1421                         try {
1422                             File cacheFile = getMessageCacheFile(envelope1.getSourceE164().get(), now, envelope1.getTimestamp());
1423                             Utils.storeEnvelope(envelope1, cacheFile);
1424                         } catch (IOException e) {
1425                             System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1426                         }
1427                     });
1428                 } catch (TimeoutException e) {
1429                     if (returnOnTimeout)
1430                         return;
1431                     continue;
1432                 } catch (InvalidVersionException e) {
1433                     System.err.println("Ignoring error: " + e.getMessage());
1434                     continue;
1435                 }
1436                 if (!envelope.isReceipt()) {
1437                     try {
1438                         content = decryptMessage(envelope);
1439                     } catch (Exception e) {
1440                         exception = e;
1441                     }
1442                     handleMessage(envelope, content, ignoreAttachments);
1443                 }
1444                 account.save();
1445                 if (!isMessageBlocked(envelope, content)) {
1446                     handler.handleMessage(envelope, content, exception);
1447                 }
1448                 if (!(exception instanceof ProtocolUntrustedIdentityException)) {
1449                     File cacheFile = null;
1450                     try {
1451                         cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1452                         Files.delete(cacheFile.toPath());
1453                         // Try to delete directory if empty
1454                         new File(getMessageCachePath()).delete();
1455                     } catch (IOException e) {
1456                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1457                     }
1458                 }
1459             }
1460         } finally {
1461             if (messagePipe != null) {
1462                 messagePipe.shutdown();
1463                 messagePipe = null;
1464             }
1465         }
1466     }
1467
1468     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1469         SignalServiceAddress source;
1470         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1471             source = envelope.getSourceAddress();
1472         } else if (content != null) {
1473             source = content.getSender();
1474         } else {
1475             return false;
1476         }
1477         ContactInfo sourceContact = getContact(source.getNumber().get());
1478         if (sourceContact != null && sourceContact.blocked) {
1479             return true;
1480         }
1481
1482         if (content != null && content.getDataMessage().isPresent()) {
1483             SignalServiceDataMessage message = content.getDataMessage().get();
1484             if (message.getGroupInfo().isPresent()) {
1485                 SignalServiceGroup groupInfo = message.getGroupInfo().get();
1486                 GroupInfo group = getGroup(groupInfo.getGroupId());
1487                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1488                     return true;
1489                 }
1490             }
1491         }
1492         return false;
1493     }
1494
1495     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1496         if (content != null) {
1497             SignalServiceAddress sender;
1498             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1499                 sender = envelope.getSourceAddress();
1500             } else {
1501                 sender = content.getSender();
1502             }
1503             if (content.getDataMessage().isPresent()) {
1504                 SignalServiceDataMessage message = content.getDataMessage().get();
1505                 handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments);
1506             }
1507             if (content.getSyncMessage().isPresent()) {
1508                 account.setMultiDevice(true);
1509                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1510                 if (syncMessage.getSent().isPresent()) {
1511                     SentTranscriptMessage message = syncMessage.getSent().get();
1512                     handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments);
1513                 }
1514                 if (syncMessage.getRequest().isPresent()) {
1515                     RequestMessage rm = syncMessage.getRequest().get();
1516                     if (rm.isContactsRequest()) {
1517                         try {
1518                             sendContacts();
1519                         } catch (UntrustedIdentityException | IOException e) {
1520                             e.printStackTrace();
1521                         }
1522                     }
1523                     if (rm.isGroupsRequest()) {
1524                         try {
1525                             sendGroups();
1526                         } catch (UntrustedIdentityException | IOException e) {
1527                             e.printStackTrace();
1528                         }
1529                     }
1530                     if (rm.isBlockedListRequest()) {
1531                         try {
1532                             sendBlockedList();
1533                         } catch (UntrustedIdentityException | IOException e) {
1534                             e.printStackTrace();
1535                         }
1536                     }
1537                     // TODO Handle rm.isConfigurationRequest();
1538                 }
1539                 if (syncMessage.getGroups().isPresent()) {
1540                     File tmpFile = null;
1541                     try {
1542                         tmpFile = IOUtils.createTempFile();
1543                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1544                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1545                             DeviceGroup g;
1546                             while ((g = s.read()) != null) {
1547                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1548                                 if (syncGroup == null) {
1549                                     syncGroup = new GroupInfo(g.getId());
1550                                 }
1551                                 if (g.getName().isPresent()) {
1552                                     syncGroup.name = g.getName().get();
1553                                 }
1554                                 syncGroup.addMembers(g.getMembers());
1555                                 if (!g.isActive()) {
1556                                     syncGroup.removeMember(account.getSelfAddress());
1557                                 } else {
1558                                     // Add ourself to the member set as it's marked as active
1559                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1560                                 }
1561                                 syncGroup.blocked = g.isBlocked();
1562                                 if (g.getColor().isPresent()) {
1563                                     syncGroup.color = g.getColor().get();
1564                                 }
1565
1566                                 if (g.getAvatar().isPresent()) {
1567                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1568                                 }
1569                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1570                                 syncGroup.archived = g.isArchived();
1571                                 account.getGroupStore().updateGroup(syncGroup);
1572                             }
1573                         }
1574                     } catch (Exception e) {
1575                         e.printStackTrace();
1576                     } finally {
1577                         if (tmpFile != null) {
1578                             try {
1579                                 Files.delete(tmpFile.toPath());
1580                             } catch (IOException e) {
1581                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1582                             }
1583                         }
1584                     }
1585                 }
1586                 if (syncMessage.getBlockedList().isPresent()) {
1587                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1588                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1589                         if (address.getNumber().isPresent()) {
1590                             try {
1591                                 setContactBlocked(address.getNumber().get(), true);
1592                             } catch (InvalidNumberException e) {
1593                                 e.printStackTrace();
1594                             }
1595                         }
1596                     }
1597                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1598                         try {
1599                             setGroupBlocked(groupId, true);
1600                         } catch (GroupNotFoundException e) {
1601                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1602                         }
1603                     }
1604                 }
1605                 if (syncMessage.getContacts().isPresent()) {
1606                     File tmpFile = null;
1607                     try {
1608                         tmpFile = IOUtils.createTempFile();
1609                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1610                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1611                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1612                             if (contactsMessage.isComplete()) {
1613                                 account.getContactStore().clear();
1614                             }
1615                             DeviceContact c;
1616                             while ((c = s.read()) != null) {
1617                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1618                                     account.setProfileKey(c.getProfileKey().get());
1619                                 }
1620                                 ContactInfo contact = account.getContactStore().getContact(c.getAddress());
1621                                 if (contact == null) {
1622                                     contact = new ContactInfo(c.getAddress());
1623                                 }
1624                                 if (c.getName().isPresent()) {
1625                                     contact.name = c.getName().get();
1626                                 }
1627                                 if (c.getColor().isPresent()) {
1628                                     contact.color = c.getColor().get();
1629                                 }
1630                                 if (c.getProfileKey().isPresent()) {
1631                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1632                                 }
1633                                 if (c.getVerified().isPresent()) {
1634                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1635                                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination().getNumber().get(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1636                                 }
1637                                 if (c.getExpirationTimer().isPresent()) {
1638                                     ThreadInfo thread = account.getThreadStore().getThread(c.getAddress().getNumber().get());
1639                                     if (thread == null) {
1640                                         thread = new ThreadInfo();
1641                                         thread.id = c.getAddress().getNumber().get();
1642                                     }
1643                                     thread.messageExpirationTime = c.getExpirationTimer().get();
1644                                     account.getThreadStore().updateThread(thread);
1645                                 }
1646                                 contact.blocked = c.isBlocked();
1647                                 contact.inboxPosition = c.getInboxPosition().orNull();
1648                                 contact.archived = c.isArchived();
1649                                 account.getContactStore().updateContact(contact);
1650
1651                                 if (c.getAvatar().isPresent()) {
1652                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1653                                 }
1654                             }
1655                         }
1656                     } catch (Exception e) {
1657                         e.printStackTrace();
1658                     } finally {
1659                         if (tmpFile != null) {
1660                             try {
1661                                 Files.delete(tmpFile.toPath());
1662                             } catch (IOException e) {
1663                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1664                             }
1665                         }
1666                     }
1667                 }
1668                 if (syncMessage.getVerified().isPresent()) {
1669                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1670                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination().getNumber().get(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1671                 }
1672                 if (syncMessage.getConfiguration().isPresent()) {
1673                     // TODO
1674                 }
1675             }
1676         }
1677     }
1678
1679     private File getContactAvatarFile(String number) {
1680         return new File(avatarsPath, "contact-" + number);
1681     }
1682
1683     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1684         IOUtils.createPrivateDirectories(avatarsPath);
1685         if (attachment.isPointer()) {
1686             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1687             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1688         } else {
1689             SignalServiceAttachmentStream stream = attachment.asStream();
1690             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1691         }
1692     }
1693
1694     private File getGroupAvatarFile(byte[] groupId) {
1695         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1696     }
1697
1698     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1699         IOUtils.createPrivateDirectories(avatarsPath);
1700         if (attachment.isPointer()) {
1701             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1702             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1703         } else {
1704             SignalServiceAttachmentStream stream = attachment.asStream();
1705             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1706         }
1707     }
1708
1709     public File getAttachmentFile(long attachmentId) {
1710         return new File(attachmentsPath, attachmentId + "");
1711     }
1712
1713     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1714         IOUtils.createPrivateDirectories(attachmentsPath);
1715         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1716     }
1717
1718     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1719         if (storePreview && pointer.getPreview().isPresent()) {
1720             File previewFile = new File(outputFile + ".preview");
1721             try (OutputStream output = new FileOutputStream(previewFile)) {
1722                 byte[] preview = pointer.getPreview().get();
1723                 output.write(preview, 0, preview.length);
1724             } catch (FileNotFoundException e) {
1725                 e.printStackTrace();
1726                 return null;
1727             }
1728         }
1729
1730         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1731
1732         File tmpFile = IOUtils.createTempFile();
1733         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1734             try (OutputStream output = new FileOutputStream(outputFile)) {
1735                 byte[] buffer = new byte[4096];
1736                 int read;
1737
1738                 while ((read = input.read(buffer)) != -1) {
1739                     output.write(buffer, 0, read);
1740                 }
1741             } catch (FileNotFoundException e) {
1742                 e.printStackTrace();
1743                 return null;
1744             }
1745         } finally {
1746             try {
1747                 Files.delete(tmpFile.toPath());
1748             } catch (IOException e) {
1749                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1750             }
1751         }
1752         return outputFile;
1753     }
1754
1755     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1756         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1757         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1758     }
1759
1760     @Override
1761     public boolean isRemote() {
1762         return false;
1763     }
1764
1765     private void sendGroups() throws IOException, UntrustedIdentityException {
1766         File groupsFile = IOUtils.createTempFile();
1767
1768         try {
1769             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1770                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1771                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1772                     ThreadInfo info = account.getThreadStore().getThread(Base64.encodeBytes(record.groupId));
1773                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1774                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1775                             record.isMember(account.getSelfAddress()), Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1776                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1777                 }
1778             }
1779
1780             if (groupsFile.exists() && groupsFile.length() > 0) {
1781                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1782                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1783                             .withStream(groupsFileStream)
1784                             .withContentType("application/octet-stream")
1785                             .withLength(groupsFile.length())
1786                             .build();
1787
1788                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1789                 }
1790             }
1791         } finally {
1792             try {
1793                 Files.delete(groupsFile.toPath());
1794             } catch (IOException e) {
1795                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1796             }
1797         }
1798     }
1799
1800     public void sendContacts() throws IOException, UntrustedIdentityException {
1801         File contactsFile = IOUtils.createTempFile();
1802
1803         try {
1804             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1805                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1806                 for (ContactInfo record : account.getContactStore().getContacts()) {
1807                     VerifiedMessage verifiedMessage = null;
1808                     ThreadInfo info = account.getThreadStore().getThread(record.number);
1809                     if (getIdentities().containsKey(record.number)) {
1810                         JsonIdentityKeyStore.Identity currentIdentity = null;
1811                         for (JsonIdentityKeyStore.Identity id : getIdentities().get(record.number)) {
1812                             if (currentIdentity == null || id.getDateAdded().after(currentIdentity.getDateAdded())) {
1813                                 currentIdentity = id;
1814                             }
1815                         }
1816                         if (currentIdentity != null) {
1817                             verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1818                         }
1819                     }
1820
1821                     ProfileKey profileKey = null;
1822                     try {
1823                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1824                     } catch (InvalidInputException ignored) {
1825                     }
1826                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1827                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1828                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1829                             Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1830                             Optional.fromNullable(record.inboxPosition), record.archived));
1831                 }
1832
1833                 if (account.getProfileKey() != null) {
1834                     // Send our own profile key as well
1835                     out.write(new DeviceContact(account.getSelfAddress(),
1836                             Optional.absent(), Optional.absent(),
1837                             Optional.absent(), Optional.absent(),
1838                             Optional.of(account.getProfileKey()),
1839                             false, Optional.absent(), Optional.absent(), false));
1840                 }
1841             }
1842
1843             if (contactsFile.exists() && contactsFile.length() > 0) {
1844                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1845                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1846                             .withStream(contactsFileStream)
1847                             .withContentType("application/octet-stream")
1848                             .withLength(contactsFile.length())
1849                             .build();
1850
1851                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1852                 }
1853             }
1854         } finally {
1855             try {
1856                 Files.delete(contactsFile.toPath());
1857             } catch (IOException e) {
1858                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1859             }
1860         }
1861     }
1862
1863     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1864         List<SignalServiceAddress> addresses = new ArrayList<>();
1865         for (ContactInfo record : account.getContactStore().getContacts()) {
1866             if (record.blocked) {
1867                 addresses.add(record.getAddress());
1868             }
1869         }
1870         List<byte[]> groupIds = new ArrayList<>();
1871         for (GroupInfo record : account.getGroupStore().getGroups()) {
1872             if (record.blocked) {
1873                 groupIds.add(record.groupId);
1874             }
1875         }
1876         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1877     }
1878
1879     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1880         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1881         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1882     }
1883
1884     public List<ContactInfo> getContacts() {
1885         return account.getContactStore().getContacts();
1886     }
1887
1888     public ContactInfo getContact(String number) {
1889         return account.getContactStore().getContact(new SignalServiceAddress(null, number));
1890     }
1891
1892     public GroupInfo getGroup(byte[] groupId) {
1893         return account.getGroupStore().getGroup(groupId);
1894     }
1895
1896     public Map<String, List<JsonIdentityKeyStore.Identity>> getIdentities() {
1897         return account.getSignalProtocolStore().getIdentities();
1898     }
1899
1900     public Pair<String, List<JsonIdentityKeyStore.Identity>> getIdentities(String number) throws InvalidNumberException {
1901         String canonicalizedNumber = Utils.canonicalizeNumber(number, account.getUsername());
1902         return new Pair<>(canonicalizedNumber, account.getSignalProtocolStore().getIdentities(canonicalizedNumber));
1903     }
1904
1905     /**
1906      * Trust this the identity with this fingerprint
1907      *
1908      * @param name        username of the identity
1909      * @param fingerprint Fingerprint
1910      */
1911     public boolean trustIdentityVerified(String name, byte[] fingerprint) {
1912         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1913         if (ids == null) {
1914             return false;
1915         }
1916         for (JsonIdentityKeyStore.Identity id : ids) {
1917             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1918                 continue;
1919             }
1920
1921             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1922             try {
1923                 sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1924             } catch (IOException | UntrustedIdentityException e) {
1925                 e.printStackTrace();
1926             }
1927             account.save();
1928             return true;
1929         }
1930         return false;
1931     }
1932
1933     /**
1934      * Trust this the identity with this safety number
1935      *
1936      * @param name         username of the identity
1937      * @param safetyNumber Safety number
1938      */
1939     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) {
1940         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1941         if (ids == null) {
1942             return false;
1943         }
1944         for (JsonIdentityKeyStore.Identity id : ids) {
1945             if (!safetyNumber.equals(computeSafetyNumber(name, id.getIdentityKey()))) {
1946                 continue;
1947             }
1948
1949             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1950             try {
1951                 sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1952             } catch (IOException | UntrustedIdentityException e) {
1953                 e.printStackTrace();
1954             }
1955             account.save();
1956             return true;
1957         }
1958         return false;
1959     }
1960
1961     /**
1962      * Trust all keys of this identity without verification
1963      *
1964      * @param name username of the identity
1965      */
1966     public boolean trustIdentityAllKeys(String name) {
1967         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1968         if (ids == null) {
1969             return false;
1970         }
1971         for (JsonIdentityKeyStore.Identity id : ids) {
1972             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1973                 account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1974                 try {
1975                     sendVerifiedMessage(new SignalServiceAddress(null, name), id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1976                 } catch (IOException | UntrustedIdentityException e) {
1977                     e.printStackTrace();
1978                 }
1979             }
1980         }
1981         account.save();
1982         return true;
1983     }
1984
1985     public String computeSafetyNumber(String theirUsername, IdentityKey theirIdentityKey) {
1986         return Utils.computeSafetyNumber(account.getUsername(), getIdentity(), theirUsername, theirIdentityKey);
1987     }
1988
1989     public interface ReceiveMessageHandler {
1990
1991         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
1992     }
1993 }