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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.Signal;
  22 import org.asamk.signal.AttachmentInvalidException;
  23 import org.asamk.signal.GroupNotFoundException;
  24 import org.asamk.signal.NotAGroupMemberException;
  25 import org.asamk.signal.StickerPackInvalidException;
  26 import org.asamk.signal.TrustLevel;
  27 import org.asamk.signal.UserAlreadyExists;
  28 import org.asamk.signal.storage.SignalAccount;
  29 import org.asamk.signal.storage.contacts.ContactInfo;
  30 import org.asamk.signal.storage.groups.GroupInfo;
  31 import org.asamk.signal.storage.groups.JsonGroupStore;
  32 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  33 import org.asamk.signal.util.IOUtils;
  34 import org.asamk.signal.util.Util;
  35 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  36 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  37 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  38 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  39 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  40 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  41 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  42 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  43 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  44 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  45 import org.signal.libsignal.metadata.SelfSendException;
  46 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  47 import org.signal.zkgroup.InvalidInputException;
  48 import org.signal.zkgroup.VerificationFailedException;
  49 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  50 import org.signal.zkgroup.profiles.ProfileKey;
  51 import org.whispersystems.libsignal.IdentityKey;
  52 import org.whispersystems.libsignal.IdentityKeyPair;
  53 import org.whispersystems.libsignal.InvalidKeyException;
  54 import org.whispersystems.libsignal.InvalidMessageException;
  55 import org.whispersystems.libsignal.InvalidVersionException;
  56 import org.whispersystems.libsignal.ecc.Curve;
  57 import org.whispersystems.libsignal.ecc.ECKeyPair;
  58 import org.whispersystems.libsignal.ecc.ECPublicKey;
  59 import org.whispersystems.libsignal.state.PreKeyRecord;
  60 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  61 import org.whispersystems.libsignal.util.KeyHelper;
  62 import org.whispersystems.libsignal.util.Medium;
  63 import org.whispersystems.libsignal.util.Pair;
  64 import org.whispersystems.libsignal.util.guava.Optional;
  65 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  66 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  67 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  68 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  69 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  70 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  71 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  72 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  73 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  74 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  75 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  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.SignalServiceReceiptMessage;
  85 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  86 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  87 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  88 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  89 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  90 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  91 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  92 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  93 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  94 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  95 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  96 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  97 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  98 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  99 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
 100 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 101 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
 102 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 103 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
 104 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 105 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
 106 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 107 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 108 import org.whispersystems.signalservice.api.util.SleepTimer;
 109 import org.whispersystems.signalservice.api.util.StreamDetails;
 110 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 111 import org.whispersystems.signalservice.api.util.UuidUtil;
 112 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 113 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 114 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 115 import org.whispersystems.signalservice.internal.util.Hex;
 116 import org.whispersystems.util.Base64;
 117
 118 import java.io.File;
 119 import java.io.FileInputStream;
 120 import java.io.FileNotFoundException;
 121 import java.io.FileOutputStream;
 122 import java.io.IOException;
 123 import java.io.InputStream;
 124 import java.io.OutputStream;
 125 import java.net.URI;
 126 import java.net.URISyntaxException;
 127 import java.net.URLEncoder;
 128 import java.nio.file.Files;
 129 import java.nio.file.Paths;
 130 import java.nio.file.StandardCopyOption;
 131 import java.util.ArrayDeque;
 132 import java.util.ArrayList;
 133 import java.util.Arrays;
 134 import java.util.Collection;
 135 import java.util.Collections;
 136 import java.util.Date;
 137 import java.util.Deque;
 138 import java.util.HashSet;
 139 import java.util.LinkedList;
 140 import java.util.List;
 141 import java.util.Locale;
 142 import java.util.Objects;
 143 import java.util.Set;
 144 import java.util.UUID;
 145 import java.util.concurrent.TimeUnit;
 146 import java.util.concurrent.TimeoutException;
 147 import java.util.stream.Collectors;
 148 import java.util.zip.ZipEntry;
 149 import java.util.zip.ZipFile;
 150
 151 public class Manager implements Signal {
 152
 153     private final String settingsPath;
 154     private final String dataPath;
 155     private final String attachmentsPath;
 156     private final String avatarsPath;
 157     private final SleepTimer timer = new UptimeSleepTimer();
 158
 159     private SignalAccount account;
 160     private String username;
 161     private SignalServiceAccountManager accountManager;
 162     private SignalServiceMessagePipe messagePipe = null;
 163     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 164
 165     public Manager(String username, String settingsPath) {
 166         this.username = username;
 167         this.settingsPath = settingsPath;
 168         this.dataPath = this.settingsPath + "/data";
 169         this.attachmentsPath = this.settingsPath + "/attachments";
 170         this.avatarsPath = this.settingsPath + "/avatars";
 171
 172     }
 173
 174     public String getUsername() {
 175         return username;
 176     }
 177
 178     public SignalServiceAddress getSelfAddress() {
 179         return account.getSelfAddress();
 180     }
 181
 182     private SignalServiceAccountManager getSignalServiceAccountManager() {
 183         return new SignalServiceAccountManager(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 184     }
 185
 186     private IdentityKey getIdentity() {
 187         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
 188     }
 189
 190     public int getDeviceId() {
 191         return account.getDeviceId();
 192     }
 193
 194     private String getMessageCachePath() {
 195         return this.dataPath + "/" + username + ".d/msg-cache";
 196     }
 197
 198     private String getMessageCachePath(String sender) {
 199         if (sender == null || sender.isEmpty()) {
 200             return getMessageCachePath();
 201         }
 202
 203         return getMessageCachePath() + "/" + sender.replace("/", "_");
 204     }
 205
 206     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 207         String cachePath = getMessageCachePath(sender);
 208         IOUtils.createPrivateDirectories(cachePath);
 209         return new File(cachePath + "/" + now + "_" + timestamp);
 210     }
 211
 212     public boolean userHasKeys() {
 213         return account != null && account.getSignalProtocolStore() != null;
 214     }
 215
 216     public void init() throws IOException {
 217         if (!SignalAccount.userExists(dataPath, username)) {
 218             return;
 219         }
 220         account = SignalAccount.load(dataPath, username);
 221         account.setResolver(this::resolveSignalServiceAddress);
 222
 223         migrateLegacyConfigs();
 224
 225         accountManager = getSignalServiceAccountManager();
 226         if (account.isRegistered()) {
 227             if (accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 228                 refreshPreKeys();
 229                 account.save();
 230             }
 231             if (account.getUuid() == null) {
 232                 account.setUuid(accountManager.getOwnUuid());
 233                 account.save();
 234             }
 235         }
 236     }
 237
 238     private void migrateLegacyConfigs() {
 239         // Copy group avatars that were previously stored in the attachments folder
 240         // to the new avatar folder
 241         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 242             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 243                 File avatarFile = getGroupAvatarFile(g.groupId);
 244                 File attachmentFile = getAttachmentFile(new SignalServiceAttachmentRemoteId(g.getAvatarId()));
 245                 if (!avatarFile.exists() && attachmentFile.exists()) {
 246                     try {
 247                         IOUtils.createPrivateDirectories(avatarsPath);
 248                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 249                     } catch (Exception e) {
 250                         // Ignore
 251                     }
 252                 }
 253             }
 254             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 255             account.save();
 256         }
 257         if (account.getProfileKey() == null) {
 258             // Old config file, creating new profile key
 259             account.setProfileKey(KeyUtils.createProfileKey());
 260             account.save();
 261         }
 262     }
 263
 264     private void createNewIdentity() throws IOException {
 265         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 266         int registrationId = KeyHelper.generateRegistrationId(false);
 267         if (username == null) {
 268             account = SignalAccount.createTemporaryAccount(identityKey, registrationId);
 269             account.setResolver(this::resolveSignalServiceAddress);
 270         } else {
 271             ProfileKey profileKey = KeyUtils.createProfileKey();
 272             account = SignalAccount.create(dataPath, username, identityKey, registrationId, profileKey);
 273             account.setResolver(this::resolveSignalServiceAddress);
 274             account.save();
 275         }
 276     }
 277
 278     public boolean isRegistered() {
 279         return account != null && account.isRegistered();
 280     }
 281
 282     public void register(boolean voiceVerification) throws IOException {
 283         if (account == null) {
 284             createNewIdentity();
 285         }
 286         account.setPassword(KeyUtils.createPassword());
 287         account.setUuid(null);
 288         accountManager = getSignalServiceAccountManager();
 289
 290         if (voiceVerification) {
 291             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 292         } else {
 293             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 294         }
 295
 296         account.setRegistered(false);
 297         account.save();
 298     }
 299
 300     public void updateAccountAttributes() throws IOException {
 301         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, BaseConfig.capabilities);
 302     }
 303
 304     public void setProfileName(String name) throws IOException {
 305         accountManager.setProfileName(account.getProfileKey(), name);
 306     }
 307
 308     public void setProfileAvatar(File avatar) throws IOException {
 309         final StreamDetails streamDetails = Utils.createStreamDetailsFromFile(avatar);
 310         accountManager.setProfileAvatar(account.getProfileKey(), streamDetails);
 311         streamDetails.getStream().close();
 312     }
 313
 314     public void removeProfileAvatar() throws IOException {
 315         accountManager.setProfileAvatar(account.getProfileKey(), null);
 316     }
 317
 318     public void unregister() throws IOException {
 319         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 320         // If this is the master device, other users can't send messages to this number anymore.
 321         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 322         accountManager.setGcmId(Optional.absent());
 323
 324         account.setRegistered(false);
 325         account.save();
 326     }
 327
 328     public String getDeviceLinkUri() throws TimeoutException, IOException {
 329         if (account == null) {
 330             createNewIdentity();
 331         }
 332         account.setPassword(KeyUtils.createPassword());
 333         accountManager = getSignalServiceAccountManager();
 334         String uuid = accountManager.getNewDeviceUuid();
 335
 336         return Utils.createDeviceLinkUri(new Utils.DeviceLinkInfo(uuid, getIdentity().getPublicKey()));
 337     }
 338
 339     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 340         account.setSignalingKey(KeyUtils.createSignalingKey());
 341         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 342
 343         username = ret.getNumber();
 344         // TODO do this check before actually registering
 345         if (SignalAccount.userExists(dataPath, username)) {
 346             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 347         }
 348
 349         // Create new account with the synced identity
 350         byte[] profileKeyBytes = ret.getProfileKey();
 351         ProfileKey profileKey;
 352         if (profileKeyBytes == null) {
 353             profileKey = KeyUtils.createProfileKey();
 354         } else {
 355             try {
 356                 profileKey = new ProfileKey(profileKeyBytes);
 357             } catch (InvalidInputException e) {
 358                 throw new IOException("Received invalid profileKey", e);
 359             }
 360         }
 361         account = SignalAccount.createLinkedAccount(dataPath, username, ret.getUuid(), account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 362         account.setResolver(this::resolveSignalServiceAddress);
 363
 364         refreshPreKeys();
 365
 366         requestSyncGroups();
 367         requestSyncContacts();
 368         requestSyncBlocked();
 369         requestSyncConfiguration();
 370
 371         account.save();
 372     }
 373
 374     public List<DeviceInfo> getLinkedDevices() throws IOException {
 375         List<DeviceInfo> devices = accountManager.getDevices();
 376         account.setMultiDevice(devices.size() > 1);
 377         account.save();
 378         return devices;
 379     }
 380
 381     public void removeLinkedDevices(int deviceId) throws IOException {
 382         accountManager.removeDevice(deviceId);
 383         List<DeviceInfo> devices = accountManager.getDevices();
 384         account.setMultiDevice(devices.size() > 1);
 385         account.save();
 386     }
 387
 388     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 389         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 390
 391         addDevice(info.deviceIdentifier, info.deviceKey);
 392     }
 393
 394     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 395         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 396         String verificationCode = accountManager.getNewDeviceVerificationCode();
 397
 398         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 399         account.setMultiDevice(true);
 400         account.save();
 401     }
 402
 403     private List<PreKeyRecord> generatePreKeys() {
 404         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 405
 406         final int offset = account.getPreKeyIdOffset();
 407         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 408             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 409             ECKeyPair keyPair = Curve.generateKeyPair();
 410             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 411
 412             records.add(record);
 413         }
 414
 415         account.addPreKeys(records);
 416         account.save();
 417
 418         return records;
 419     }
 420
 421     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 422         try {
 423             ECKeyPair keyPair = Curve.generateKeyPair();
 424             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 425             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 426
 427             account.addSignedPreKey(record);
 428             account.save();
 429
 430             return record;
 431         } catch (InvalidKeyException e) {
 432             throw new AssertionError(e);
 433         }
 434     }
 435
 436     public void verifyAccount(String verificationCode, String pin) throws IOException {
 437         verificationCode = verificationCode.replace("-", "");
 438         account.setSignalingKey(KeyUtils.createSignalingKey());
 439         // TODO make unrestricted unidentified access configurable
 440         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, BaseConfig.capabilities);
 441
 442         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 443         // TODO response.isStorageCapable()
 444         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 445         account.setRegistered(true);
 446         account.setUuid(uuid);
 447         account.setRegistrationLockPin(pin);
 448         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 449
 450         refreshPreKeys();
 451         account.save();
 452     }
 453
 454     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 455         if (pin.isPresent()) {
 456             account.setRegistrationLockPin(pin.get());
 457             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 458         } else {
 459             account.setRegistrationLockPin(null);
 460             accountManager.removeRegistrationLockV1();
 461         }
 462         account.save();
 463     }
 464
 465     private void refreshPreKeys() throws IOException {
 466         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 467         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 468         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 469
 470         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 471     }
 472
 473     private SignalServiceMessageReceiver getMessageReceiver() {
 474         // TODO implement ZkGroup support
 475         final ClientZkProfileOperations clientZkProfileOperations = null;
 476         return new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer, clientZkProfileOperations);
 477     }
 478
 479     private SignalServiceMessageSender getMessageSender() {
 480         // TODO implement ZkGroup support
 481         final ClientZkProfileOperations clientZkProfileOperations = null;
 482         final boolean attachmentsV3 = false;
 483         return new SignalServiceMessageSender(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 484                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), attachmentsV3, Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent(), clientZkProfileOperations);
 485     }
 486
 487     private SignalServiceProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 488         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 489                 : messagePipe;
 490
 491         if (pipe != null) {
 492             try {
 493                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 494             } catch (IOException ignored) {
 495             }
 496         }
 497
 498         SignalServiceMessageReceiver receiver = getMessageReceiver();
 499         try {
 500             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 501         } catch (VerificationFailedException e) {
 502             throw new AssertionError(e);
 503         }
 504     }
 505
 506     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 507         File file = getGroupAvatarFile(groupId);
 508         if (!file.exists()) {
 509             return Optional.absent();
 510         }
 511
 512         return Optional.of(Utils.createAttachment(file));
 513     }
 514
 515     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 516         File file = getContactAvatarFile(number);
 517         if (!file.exists()) {
 518             return Optional.absent();
 519         }
 520
 521         return Optional.of(Utils.createAttachment(file));
 522     }
 523
 524     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 525         GroupInfo g = account.getGroupStore().getGroup(groupId);
 526         if (g == null) {
 527             throw new GroupNotFoundException(groupId);
 528         }
 529         if (!g.isMember(account.getSelfAddress())) {
 530             throw new NotAGroupMemberException(groupId, g.name);
 531         }
 532         return g;
 533     }
 534
 535     public List<GroupInfo> getGroups() {
 536         return account.getGroupStore().getGroups();
 537     }
 538
 539     @Override
 540     public long sendGroupMessage(String messageText, List<String> attachments,
 541                                  byte[] groupId)
 542             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 543         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 544         if (attachments != null) {
 545             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 546         }
 547         if (groupId != null) {
 548             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 549                     .withId(groupId)
 550                     .build();
 551             messageBuilder.asGroupMessage(group);
 552         }
 553
 554         final GroupInfo g = getGroupForSending(groupId);
 555
 556         messageBuilder.withExpiration(g.messageExpirationTime);
 557
 558         return sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 559     }
 560
 561     public void sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 562                                          long targetSentTimestamp, byte[] groupId)
 563             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 564         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 565         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 566                 .withReaction(reaction);
 567         if (groupId != null) {
 568             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 569                     .withId(groupId)
 570                     .build();
 571             messageBuilder.asGroupMessage(group);
 572         }
 573         final GroupInfo g = getGroupForSending(groupId);
 574         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 575     }
 576
 577     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 578         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 579                 .withId(groupId)
 580                 .build();
 581
 582         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 583                 .asGroupMessage(group);
 584
 585         final GroupInfo g = getGroupForSending(groupId);
 586         g.removeMember(account.getSelfAddress());
 587         account.getGroupStore().updateGroup(g);
 588
 589         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 590     }
 591
 592     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 593         GroupInfo g;
 594         if (groupId == null) {
 595             // Create new group
 596             g = new GroupInfo(KeyUtils.createGroupId());
 597             g.addMembers(Collections.singleton(account.getSelfAddress()));
 598         } else {
 599             g = getGroupForSending(groupId);
 600         }
 601
 602         if (name != null) {
 603             g.name = name;
 604         }
 605
 606         if (members != null) {
 607             final Set<String> newE164Members = new HashSet<>();
 608             for (SignalServiceAddress member : members) {
 609                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 610                     continue;
 611                 }
 612                 newE164Members.add(member.getNumber().get());
 613             }
 614
 615             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 616             if (contacts.size() != newE164Members.size()) {
 617                 // Some of the new members are not registered on Signal
 618                 for (ContactTokenDetails contact : contacts) {
 619                     newE164Members.remove(contact.getNumber());
 620                 }
 621                 System.err.println("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 622                 System.err.println("Aborting…");
 623                 System.exit(1);
 624             }
 625
 626             g.addMembers(members);
 627         }
 628
 629         if (avatarFile != null) {
 630             IOUtils.createPrivateDirectories(avatarsPath);
 631             File aFile = getGroupAvatarFile(g.groupId);
 632             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 633         }
 634
 635         account.getGroupStore().updateGroup(g);
 636
 637         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 638
 639         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 640         return g.groupId;
 641     }
 642
 643     private void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 644         if (groupId == null) {
 645             return;
 646         }
 647         GroupInfo g = getGroupForSending(groupId);
 648
 649         if (!g.isMember(recipient)) {
 650             return;
 651         }
 652
 653         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 654
 655         // Send group message only to the recipient who requested it
 656         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 657     }
 658
 659     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 660         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 661                 .withId(g.groupId)
 662                 .withName(g.name)
 663                 .withMembers(new ArrayList<>(g.getMembers()));
 664
 665         File aFile = getGroupAvatarFile(g.groupId);
 666         if (aFile.exists()) {
 667             try {
 668                 group.withAvatar(Utils.createAttachment(aFile));
 669             } catch (IOException e) {
 670                 throw new AttachmentInvalidException(aFile.toString(), e);
 671             }
 672         }
 673
 674         return SignalServiceDataMessage.newBuilder()
 675                 .asGroupMessage(group.build())
 676                 .withExpiration(g.messageExpirationTime);
 677     }
 678
 679     private void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 680         if (groupId == null) {
 681             return;
 682         }
 683
 684         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 685                 .withId(groupId);
 686
 687         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 688                 .asGroupMessage(group.build());
 689
 690         // Send group info request message to the recipient who sent us a message with this groupId
 691         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 692     }
 693
 694     private void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 695         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 696                 Collections.singletonList(messageId),
 697                 System.currentTimeMillis());
 698
 699         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 700     }
 701
 702     @Override
 703     public long sendMessage(String message, List<String> attachments, String recipient)
 704             throws EncapsulatedExceptions, AttachmentInvalidException, IOException, InvalidNumberException {
 705         List<String> recipients = new ArrayList<>(1);
 706         recipients.add(recipient);
 707         return sendMessage(message, attachments, recipients);
 708     }
 709
 710     @Override
 711     public long sendMessage(String messageText, List<String> attachments,
 712                             List<String> recipients)
 713             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 714         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 715         if (attachments != null) {
 716             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 717
 718             // Upload attachments here, so we only upload once even for multiple recipients
 719             SignalServiceMessageSender messageSender = getMessageSender();
 720             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 721             for (SignalServiceAttachment attachment : attachmentStreams) {
 722                 if (attachment.isStream()) {
 723                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 724                 } else if (attachment.isPointer()) {
 725                     attachmentPointers.add(attachment.asPointer());
 726                 }
 727             }
 728
 729             messageBuilder.withAttachments(attachmentPointers);
 730         }
 731         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 732     }
 733
 734     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 735                                     long targetSentTimestamp, List<String> recipients)
 736             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 737         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 738         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 739                 .withReaction(reaction);
 740         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 741     }
 742
 743     @Override
 744     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 745         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 746                 .asEndSessionMessage();
 747
 748         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 749         try {
 750             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 751         } catch (Exception e) {
 752             for (SignalServiceAddress address : signalServiceAddresses) {
 753                 handleEndSession(address);
 754             }
 755             throw e;
 756         }
 757     }
 758
 759     @Override
 760     public String getContactName(String number) throws InvalidNumberException {
 761         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 762         if (contact == null) {
 763             return "";
 764         } else {
 765             return contact.name;
 766         }
 767     }
 768
 769     @Override
 770     public void setContactName(String number, String name) throws InvalidNumberException {
 771         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 772         ContactInfo contact = account.getContactStore().getContact(address);
 773         if (contact == null) {
 774             contact = new ContactInfo(address);
 775             System.err.println("Add contact " + contact.number + " named " + name);
 776         } else {
 777             System.err.println("Updating contact " + contact.number + " name " + contact.name + " -> " + name);
 778         }
 779         contact.name = name;
 780         account.getContactStore().updateContact(contact);
 781         account.save();
 782     }
 783
 784     @Override
 785     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 786         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 787     }
 788
 789     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 790         ContactInfo contact = account.getContactStore().getContact(address);
 791         if (contact == null) {
 792             contact = new ContactInfo(address);
 793             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + address.getNumber().orNull());
 794         } else {
 795             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + address.getNumber().orNull());
 796         }
 797         contact.blocked = blocked;
 798         account.getContactStore().updateContact(contact);
 799         account.save();
 800     }
 801
 802     @Override
 803     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 804         GroupInfo group = getGroup(groupId);
 805         if (group == null) {
 806             throw new GroupNotFoundException(groupId);
 807         } else {
 808             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 809             group.blocked = blocked;
 810             account.getGroupStore().updateGroup(group);
 811             account.save();
 812         }
 813     }
 814
 815     @Override
 816     public List<byte[]> getGroupIds() {
 817         List<GroupInfo> groups = getGroups();
 818         List<byte[]> ids = new ArrayList<>(groups.size());
 819         for (GroupInfo group : groups) {
 820             ids.add(group.groupId);
 821         }
 822         return ids;
 823     }
 824
 825     @Override
 826     public String getGroupName(byte[] groupId) {
 827         GroupInfo group = getGroup(groupId);
 828         if (group == null) {
 829             return "";
 830         } else {
 831             return group.name;
 832         }
 833     }
 834
 835     @Override
 836     public List<String> getGroupMembers(byte[] groupId) {
 837         GroupInfo group = getGroup(groupId);
 838         if (group == null) {
 839             return Collections.emptyList();
 840         } else {
 841             return new ArrayList<>(group.getMembersE164());
 842         }
 843     }
 844
 845     @Override
 846     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException {
 847         if (groupId.length == 0) {
 848             groupId = null;
 849         }
 850         if (name.isEmpty()) {
 851             name = null;
 852         }
 853         if (members.size() == 0) {
 854             members = null;
 855         }
 856         if (avatar.isEmpty()) {
 857             avatar = null;
 858         }
 859         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 860     }
 861
 862     /**
 863      * Change the expiration timer for a contact
 864      */
 865     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) {
 866         ContactInfo c = account.getContactStore().getContact(address);
 867         c.messageExpirationTime = messageExpirationTimer;
 868         account.getContactStore().updateContact(c);
 869     }
 870
 871     /**
 872      * Change the expiration timer for a group
 873      */
 874     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 875         GroupInfo g = account.getGroupStore().getGroup(groupId);
 876         g.messageExpirationTime = messageExpirationTimer;
 877         account.getGroupStore().updateGroup(g);
 878     }
 879
 880     /**
 881      * Upload the sticker pack from path.
 882      *
 883      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 884      * @return if successful, returns the URL to install the sticker pack in the signal app
 885      */
 886     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 887         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 888
 889         SignalServiceMessageSender messageSender = getMessageSender();
 890
 891         byte[] packKey = KeyUtils.createStickerUploadKey();
 892         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 893
 894         try {
 895             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 896                     .toString();
 897         } catch (URISyntaxException e) {
 898             throw new AssertionError(e);
 899         }
 900     }
 901
 902     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 903         ZipFile zip = null;
 904         String rootPath = null;
 905
 906         final File file = new File(path);
 907         if (file.getName().endsWith(".zip")) {
 908             zip = new ZipFile(file);
 909         } else if (file.getName().equals("manifest.json")) {
 910             rootPath = file.getParent();
 911         } else {
 912             throw new StickerPackInvalidException("Could not find manifest.json");
 913         }
 914
 915         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 916
 917         if (pack.stickers == null) {
 918             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 919         }
 920
 921         if (pack.stickers.isEmpty()) {
 922             throw new StickerPackInvalidException("Must include stickers.");
 923         }
 924
 925         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 926         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 927             if (sticker.file == null) {
 928                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 929             }
 930
 931             Pair<InputStream, Long> data;
 932             try {
 933                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 934             } catch (IOException ignored) {
 935                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 936             }
 937
 938             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 939             stickers.add(stickerInfo);
 940         }
 941
 942         StickerInfo cover = null;
 943         if (pack.cover != null) {
 944             if (pack.cover.file == null) {
 945                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 946             }
 947
 948             Pair<InputStream, Long> data;
 949             try {
 950                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 951             } catch (IOException ignored) {
 952                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 953             }
 954
 955             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 956         }
 957
 958         return new SignalServiceStickerManifestUpload(
 959                 pack.title,
 960                 pack.author,
 961                 cover,
 962                 stickers);
 963     }
 964
 965     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 966         InputStream inputStream;
 967         if (zip != null) {
 968             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 969         } else {
 970             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 971         }
 972         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 973     }
 974
 975     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 976         if (zip != null) {
 977             final ZipEntry entry = zip.getEntry(subfile);
 978             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 979         } else {
 980             final File file = new File(rootPath, subfile);
 981             return new Pair<>(new FileInputStream(file), file.length());
 982         }
 983     }
 984
 985     private void requestSyncGroups() throws IOException {
 986         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 987         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 988         try {
 989             sendSyncMessage(message);
 990         } catch (UntrustedIdentityException e) {
 991             e.printStackTrace();
 992         }
 993     }
 994
 995     private void requestSyncContacts() throws IOException {
 996         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 997         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 998         try {
 999             sendSyncMessage(message);
1000         } catch (UntrustedIdentityException e) {
1001             e.printStackTrace();
1002         }
1003     }
1004
1005     private void requestSyncBlocked() throws IOException {
1006         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
1007         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1008         try {
1009             sendSyncMessage(message);
1010         } catch (UntrustedIdentityException e) {
1011             e.printStackTrace();
1012         }
1013     }
1014
1015     private void requestSyncConfiguration() throws IOException {
1016         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
1017         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1018         try {
1019             sendSyncMessage(message);
1020         } catch (UntrustedIdentityException e) {
1021             e.printStackTrace();
1022         }
1023     }
1024
1025     private byte[] getSenderCertificate() {
1026         // TODO support UUID capable sender certificates
1027         // byte[] certificate = accountManager.getSenderCertificate();
1028         byte[] certificate;
1029         try {
1030             certificate = accountManager.getSenderCertificateLegacy();
1031         } catch (IOException e) {
1032             System.err.println("Failed to get sender certificate: " + e);
1033             return null;
1034         }
1035         // TODO cache for a day
1036         return certificate;
1037     }
1038
1039     private byte[] getSelfUnidentifiedAccessKey() {
1040         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
1041     }
1042
1043     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
1044         ProfileCipher profileCipher = new ProfileCipher(profileKey);
1045         try {
1046             return new SignalProfile(
1047                     encryptedProfile.getIdentityKey(),
1048                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
1049                     encryptedProfile.getAvatar(),
1050                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
1051                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
1052             );
1053         } catch (InvalidCiphertextException e) {
1054             return null;
1055         }
1056     }
1057
1058     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
1059         ContactInfo contact = account.getContactStore().getContact(recipient);
1060         if (contact == null || contact.profileKey == null) {
1061             return null;
1062         }
1063         ProfileKey theirProfileKey;
1064         try {
1065             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
1066         } catch (InvalidInputException | IOException e) {
1067             throw new AssertionError(e);
1068         }
1069         SignalProfile targetProfile;
1070         try {
1071             targetProfile = decryptProfile(getRecipientProfile(recipient, Optional.absent()), theirProfileKey);
1072         } catch (IOException e) {
1073             System.err.println("Failed to get recipient profile: " + e);
1074             return null;
1075         }
1076
1077         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
1078             return null;
1079         }
1080
1081         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
1082             return KeyUtils.createUnrestrictedUnidentifiedAccess();
1083         }
1084
1085         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
1086     }
1087
1088     private Optional<UnidentifiedAccessPair> getAccessForSync() {
1089         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1090         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1091
1092         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1093             return Optional.absent();
1094         }
1095
1096         try {
1097             return Optional.of(new UnidentifiedAccessPair(
1098                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1099                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1100             ));
1101         } catch (InvalidCertificateException e) {
1102             return Optional.absent();
1103         }
1104     }
1105
1106     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1107         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1108         for (SignalServiceAddress recipient : recipients) {
1109             result.add(getAccessFor(recipient));
1110         }
1111         return result;
1112     }
1113
1114     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1115         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1116         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1117         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1118
1119         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1120             return Optional.absent();
1121         }
1122
1123         try {
1124             return Optional.of(new UnidentifiedAccessPair(
1125                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1126                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1127             ));
1128         } catch (InvalidCertificateException e) {
1129             return Optional.absent();
1130         }
1131     }
1132
1133     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1134         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1135
1136         if (unidentifiedAccess.isPresent()) {
1137             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1138         }
1139
1140         return Optional.absent();
1141     }
1142
1143     private void sendSyncMessage(SignalServiceSyncMessage message)
1144             throws IOException, UntrustedIdentityException {
1145         SignalServiceMessageSender messageSender = getMessageSender();
1146         try {
1147             messageSender.sendMessage(message, getAccessForSync());
1148         } catch (UntrustedIdentityException e) {
1149             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1150             throw e;
1151         }
1152     }
1153
1154     /**
1155      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1156      */
1157     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1158             throws EncapsulatedExceptions, IOException {
1159         final long timestamp = System.currentTimeMillis();
1160         messageBuilder.withTimestamp(timestamp);
1161         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1162
1163         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1164         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1165         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1166
1167         for (SendMessageResult result : results) {
1168             if (result.isUnregisteredFailure()) {
1169                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1170             } else if (result.isNetworkFailure()) {
1171                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1172             } else if (result.getIdentityFailure() != null) {
1173                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1174             }
1175         }
1176         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1177             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1178         }
1179         return timestamp;
1180     }
1181
1182     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1183         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1184
1185         for (String number : numbers) {
1186             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1187         }
1188         return signalServiceAddresses;
1189     }
1190
1191     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1192             throws IOException {
1193         if (messagePipe == null) {
1194             messagePipe = getMessageReceiver().createMessagePipe();
1195         }
1196         if (unidentifiedMessagePipe == null) {
1197             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1198         }
1199         SignalServiceDataMessage message = null;
1200         try {
1201             SignalServiceMessageSender messageSender = getMessageSender();
1202
1203             message = messageBuilder.build();
1204             if (message.getGroupContext().isPresent()) {
1205                 try {
1206                     final boolean isRecipientUpdate = false;
1207                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1208                     for (SendMessageResult r : result) {
1209                         if (r.getIdentityFailure() != null) {
1210                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1211                         }
1212                     }
1213                     return result;
1214                 } catch (UntrustedIdentityException e) {
1215                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1216                     return Collections.emptyList();
1217                 }
1218             } else if (recipients.size() == 1 && recipients.contains(account.getSelfAddress())) {
1219                 SignalServiceAddress recipient = account.getSelfAddress();
1220                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1221                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1222                         message.getTimestamp(),
1223                         message,
1224                         message.getExpiresInSeconds(),
1225                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1226                         false);
1227                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1228
1229                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1230                 try {
1231                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
1232                 } catch (UntrustedIdentityException e) {
1233                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1234                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
1235                 }
1236                 return results;
1237             } else {
1238                 // Send to all individually, so sync messages are sent correctly
1239                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1240                 for (SignalServiceAddress address : recipients) {
1241                     ContactInfo contact = account.getContactStore().getContact(address);
1242                     if (contact != null) {
1243                         messageBuilder.withExpiration(contact.messageExpirationTime);
1244                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1245                     } else {
1246                         messageBuilder.withExpiration(0);
1247                         messageBuilder.withProfileKey(null);
1248                     }
1249                     message = messageBuilder.build();
1250                     try {
1251                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
1252                         results.add(result);
1253                     } catch (UntrustedIdentityException e) {
1254                         account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1255                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
1256                     }
1257                 }
1258                 return results;
1259             }
1260         } finally {
1261             if (message != null && message.isEndSession()) {
1262                 for (SignalServiceAddress recipient : recipients) {
1263                     handleEndSession(recipient);
1264                 }
1265             }
1266             account.save();
1267         }
1268     }
1269
1270     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1271         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1272         try {
1273             return cipher.decrypt(envelope);
1274         } catch (ProtocolUntrustedIdentityException e) {
1275             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1276                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1277                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1278                 throw identityException;
1279             }
1280             throw new AssertionError(e);
1281         }
1282     }
1283
1284     private void handleEndSession(SignalServiceAddress source) {
1285         account.getSignalProtocolStore().deleteAllSessions(source);
1286     }
1287
1288     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1289         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1290             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1291             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1292             switch (groupInfo.getType()) {
1293                 case UPDATE:
1294                     if (group == null) {
1295                         group = new GroupInfo(groupInfo.getGroupId());
1296                     }
1297
1298                     if (groupInfo.getAvatar().isPresent()) {
1299                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1300                         if (avatar.isPointer()) {
1301                             try {
1302                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1303                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1304                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1305                             }
1306                         }
1307                     }
1308
1309                     if (groupInfo.getName().isPresent()) {
1310                         group.name = groupInfo.getName().get();
1311                     }
1312
1313                     if (groupInfo.getMembers().isPresent()) {
1314                         group.addMembers(groupInfo.getMembers().get()
1315                                 .stream()
1316                                 .map(this::resolveSignalServiceAddress)
1317                                 .collect(Collectors.toSet()));
1318                     }
1319
1320                     account.getGroupStore().updateGroup(group);
1321                     break;
1322                 case DELIVER:
1323                     if (group == null) {
1324                         try {
1325                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1326                         } catch (IOException | EncapsulatedExceptions e) {
1327                             e.printStackTrace();
1328                         }
1329                     }
1330                     break;
1331                 case QUIT:
1332                     if (group != null) {
1333                         group.removeMember(source);
1334                         account.getGroupStore().updateGroup(group);
1335                     }
1336                     break;
1337                 case REQUEST_INFO:
1338                     if (group != null) {
1339                         try {
1340                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1341                         } catch (IOException | EncapsulatedExceptions e) {
1342                             e.printStackTrace();
1343                         } catch (NotAGroupMemberException e) {
1344                             // We have left this group, so don't send a group update message
1345                         }
1346                     }
1347                     break;
1348             }
1349         }
1350         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1351         if (message.isEndSession()) {
1352             handleEndSession(conversationPartnerAddress);
1353         }
1354         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1355             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1356                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1357                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1358                 if (group == null) {
1359                     group = new GroupInfo(groupInfo.getGroupId());
1360                 }
1361                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1362                     group.messageExpirationTime = message.getExpiresInSeconds();
1363                     account.getGroupStore().updateGroup(group);
1364                 }
1365             } else {
1366                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1367                 if (contact == null) {
1368                     contact = new ContactInfo(conversationPartnerAddress);
1369                 }
1370                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1371                     contact.messageExpirationTime = message.getExpiresInSeconds();
1372                     account.getContactStore().updateContact(contact);
1373                 }
1374             }
1375         }
1376         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1377             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1378                 if (attachment.isPointer()) {
1379                     try {
1380                         retrieveAttachment(attachment.asPointer());
1381                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1382                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1383                     }
1384                 }
1385             }
1386         }
1387         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1388             if (source.matches(account.getSelfAddress())) {
1389                 try {
1390                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1391                 } catch (InvalidInputException ignored) {
1392                 }
1393                 ContactInfo contact = account.getContactStore().getContact(source);
1394                 if (contact != null) {
1395                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1396                     account.getContactStore().updateContact(contact);
1397                 }
1398             } else {
1399                 ContactInfo contact = account.getContactStore().getContact(source);
1400                 if (contact == null) {
1401                     contact = new ContactInfo(source);
1402                 }
1403                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1404                 account.getContactStore().updateContact(contact);
1405             }
1406         }
1407         if (message.getPreviews().isPresent()) {
1408             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1409             for (SignalServiceDataMessage.Preview preview : previews) {
1410                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1411                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1412                     try {
1413                         retrieveAttachment(attachment);
1414                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1415                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1416                     }
1417                 }
1418             }
1419         }
1420     }
1421
1422     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1423         final File cachePath = new File(getMessageCachePath());
1424         if (!cachePath.exists()) {
1425             return;
1426         }
1427         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1428             if (!dir.isDirectory()) {
1429                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1430                 continue;
1431             }
1432
1433             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1434                 if (!fileEntry.isFile()) {
1435                     continue;
1436                 }
1437                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1438             }
1439             // Try to delete directory if empty
1440             dir.delete();
1441         }
1442     }
1443
1444     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1445         SignalServiceEnvelope envelope;
1446         try {
1447             envelope = Utils.loadEnvelope(fileEntry);
1448             if (envelope == null) {
1449                 return;
1450             }
1451         } catch (IOException e) {
1452             e.printStackTrace();
1453             return;
1454         }
1455         SignalServiceContent content = null;
1456         if (!envelope.isReceipt()) {
1457             try {
1458                 content = decryptMessage(envelope);
1459             } catch (Exception e) {
1460                 return;
1461             }
1462             handleMessage(envelope, content, ignoreAttachments);
1463         }
1464         account.save();
1465         handler.handleMessage(envelope, content, null);
1466         try {
1467             Files.delete(fileEntry.toPath());
1468         } catch (IOException e) {
1469             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1470         }
1471     }
1472
1473     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1474         retryFailedReceivedMessages(handler, ignoreAttachments);
1475         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1476
1477         try {
1478             if (messagePipe == null) {
1479                 messagePipe = messageReceiver.createMessagePipe();
1480             }
1481
1482             while (true) {
1483                 SignalServiceEnvelope envelope;
1484                 SignalServiceContent content = null;
1485                 Exception exception = null;
1486                 final long now = new Date().getTime();
1487                 try {
1488                     envelope = messagePipe.read(timeout, unit, envelope1 -> {
1489                         // store message on disk, before acknowledging receipt to the server
1490                         try {
1491                             String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1492                             File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1493                             Utils.storeEnvelope(envelope1, cacheFile);
1494                         } catch (IOException e) {
1495                             System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1496                         }
1497                     });
1498                 } catch (TimeoutException e) {
1499                     if (returnOnTimeout)
1500                         return;
1501                     continue;
1502                 } catch (InvalidVersionException e) {
1503                     System.err.println("Ignoring error: " + e.getMessage());
1504                     continue;
1505                 }
1506                 if (!envelope.isReceipt()) {
1507                     try {
1508                         content = decryptMessage(envelope);
1509                     } catch (Exception e) {
1510                         exception = e;
1511                     }
1512                     handleMessage(envelope, content, ignoreAttachments);
1513                 }
1514                 account.save();
1515                 if (!isMessageBlocked(envelope, content)) {
1516                     handler.handleMessage(envelope, content, exception);
1517                 }
1518                 if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1519                     File cacheFile = null;
1520                     try {
1521                         cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1522                         Files.delete(cacheFile.toPath());
1523                         // Try to delete directory if empty
1524                         new File(getMessageCachePath()).delete();
1525                     } catch (IOException e) {
1526                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1527                     }
1528                 }
1529             }
1530         } finally {
1531             if (messagePipe != null) {
1532                 messagePipe.shutdown();
1533                 messagePipe = null;
1534             }
1535         }
1536     }
1537
1538     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1539         SignalServiceAddress source;
1540         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1541             source = envelope.getSourceAddress();
1542         } else if (content != null) {
1543             source = content.getSender();
1544         } else {
1545             return false;
1546         }
1547         ContactInfo sourceContact = account.getContactStore().getContact(source);
1548         if (sourceContact != null && sourceContact.blocked) {
1549             return true;
1550         }
1551
1552         if (content != null && content.getDataMessage().isPresent()) {
1553             SignalServiceDataMessage message = content.getDataMessage().get();
1554             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1555                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1556                 GroupInfo group = getGroup(groupInfo.getGroupId());
1557                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1558                     return true;
1559                 }
1560             }
1561         }
1562         return false;
1563     }
1564
1565     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1566         if (content != null) {
1567             SignalServiceAddress sender;
1568             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1569                 sender = envelope.getSourceAddress();
1570             } else {
1571                 sender = content.getSender();
1572             }
1573             if (content.getDataMessage().isPresent()) {
1574                 SignalServiceDataMessage message = content.getDataMessage().get();
1575
1576                 if (content.isNeedsReceipt()) {
1577                     try {
1578                         sendReceipt(sender, message.getTimestamp());
1579                     } catch (IOException | UntrustedIdentityException | IllegalArgumentException e) {
1580                         e.printStackTrace();
1581                     }
1582                 }
1583
1584                 handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments);
1585             }
1586             if (content.getSyncMessage().isPresent()) {
1587                 account.setMultiDevice(true);
1588                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1589                 if (syncMessage.getSent().isPresent()) {
1590                     SentTranscriptMessage message = syncMessage.getSent().get();
1591                     handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments);
1592                 }
1593                 if (syncMessage.getRequest().isPresent()) {
1594                     RequestMessage rm = syncMessage.getRequest().get();
1595                     if (rm.isContactsRequest()) {
1596                         try {
1597                             sendContacts();
1598                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1599                             e.printStackTrace();
1600                         }
1601                     }
1602                     if (rm.isGroupsRequest()) {
1603                         try {
1604                             sendGroups();
1605                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1606                             e.printStackTrace();
1607                         }
1608                     }
1609                     if (rm.isBlockedListRequest()) {
1610                         try {
1611                             sendBlockedList();
1612                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1613                             e.printStackTrace();
1614                         }
1615                     }
1616                     // TODO Handle rm.isConfigurationRequest();
1617                 }
1618                 if (syncMessage.getGroups().isPresent()) {
1619                     File tmpFile = null;
1620                     try {
1621                         tmpFile = IOUtils.createTempFile();
1622                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1623                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1624                             DeviceGroup g;
1625                             while ((g = s.read()) != null) {
1626                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1627                                 if (syncGroup == null) {
1628                                     syncGroup = new GroupInfo(g.getId());
1629                                 }
1630                                 if (g.getName().isPresent()) {
1631                                     syncGroup.name = g.getName().get();
1632                                 }
1633                                 syncGroup.addMembers(g.getMembers()
1634                                         .stream()
1635                                         .map(this::resolveSignalServiceAddress)
1636                                         .collect(Collectors.toSet()));
1637                                 if (!g.isActive()) {
1638                                     syncGroup.removeMember(account.getSelfAddress());
1639                                 } else {
1640                                     // Add ourself to the member set as it's marked as active
1641                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1642                                 }
1643                                 syncGroup.blocked = g.isBlocked();
1644                                 if (g.getColor().isPresent()) {
1645                                     syncGroup.color = g.getColor().get();
1646                                 }
1647
1648                                 if (g.getAvatar().isPresent()) {
1649                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1650                                 }
1651                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1652                                 syncGroup.archived = g.isArchived();
1653                                 account.getGroupStore().updateGroup(syncGroup);
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 groups temp file “" + tmpFile + "”: " + e.getMessage());
1664                             }
1665                         }
1666                     }
1667                 }
1668                 if (syncMessage.getBlockedList().isPresent()) {
1669                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1670                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1671                         setContactBlocked(resolveSignalServiceAddress(address), true);
1672                     }
1673                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1674                         try {
1675                             setGroupBlocked(groupId, true);
1676                         } catch (GroupNotFoundException e) {
1677                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1678                         }
1679                     }
1680                 }
1681                 if (syncMessage.getContacts().isPresent()) {
1682                     File tmpFile = null;
1683                     try {
1684                         tmpFile = IOUtils.createTempFile();
1685                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1686                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1687                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1688                             if (contactsMessage.isComplete()) {
1689                                 account.getContactStore().clear();
1690                             }
1691                             DeviceContact c;
1692                             while ((c = s.read()) != null) {
1693                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1694                                     account.setProfileKey(c.getProfileKey().get());
1695                                 }
1696                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1697                                 ContactInfo contact = account.getContactStore().getContact(address);
1698                                 if (contact == null) {
1699                                     contact = new ContactInfo(address);
1700                                 }
1701                                 if (c.getName().isPresent()) {
1702                                     contact.name = c.getName().get();
1703                                 }
1704                                 if (c.getColor().isPresent()) {
1705                                     contact.color = c.getColor().get();
1706                                 }
1707                                 if (c.getProfileKey().isPresent()) {
1708                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1709                                 }
1710                                 if (c.getVerified().isPresent()) {
1711                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1712                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1713                                 }
1714                                 if (c.getExpirationTimer().isPresent()) {
1715                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1716                                 }
1717                                 contact.blocked = c.isBlocked();
1718                                 contact.inboxPosition = c.getInboxPosition().orNull();
1719                                 contact.archived = c.isArchived();
1720                                 account.getContactStore().updateContact(contact);
1721
1722                                 if (c.getAvatar().isPresent()) {
1723                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1724                                 }
1725                             }
1726                         }
1727                     } catch (Exception e) {
1728                         e.printStackTrace();
1729                     } finally {
1730                         if (tmpFile != null) {
1731                             try {
1732                                 Files.delete(tmpFile.toPath());
1733                             } catch (IOException e) {
1734                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1735                             }
1736                         }
1737                     }
1738                 }
1739                 if (syncMessage.getVerified().isPresent()) {
1740                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1741                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1742                 }
1743                 if (syncMessage.getConfiguration().isPresent()) {
1744                     // TODO
1745                 }
1746             }
1747         }
1748     }
1749
1750     private File getContactAvatarFile(String number) {
1751         return new File(avatarsPath, "contact-" + number);
1752     }
1753
1754     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException, MissingConfigurationException {
1755         IOUtils.createPrivateDirectories(avatarsPath);
1756         if (attachment.isPointer()) {
1757             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1758             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1759         } else {
1760             SignalServiceAttachmentStream stream = attachment.asStream();
1761             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1762         }
1763     }
1764
1765     private File getGroupAvatarFile(byte[] groupId) {
1766         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1767     }
1768
1769     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException, MissingConfigurationException {
1770         IOUtils.createPrivateDirectories(avatarsPath);
1771         if (attachment.isPointer()) {
1772             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1773             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1774         } else {
1775             SignalServiceAttachmentStream stream = attachment.asStream();
1776             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1777         }
1778     }
1779
1780     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1781         return new File(attachmentsPath, attachmentId.toString());
1782     }
1783
1784     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
1785         IOUtils.createPrivateDirectories(attachmentsPath);
1786         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
1787     }
1788
1789     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException, MissingConfigurationException {
1790         if (storePreview && pointer.getPreview().isPresent()) {
1791             File previewFile = new File(outputFile + ".preview");
1792             try (OutputStream output = new FileOutputStream(previewFile)) {
1793                 byte[] preview = pointer.getPreview().get();
1794                 output.write(preview, 0, preview.length);
1795             } catch (FileNotFoundException e) {
1796                 e.printStackTrace();
1797                 return null;
1798             }
1799         }
1800
1801         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1802
1803         File tmpFile = IOUtils.createTempFile();
1804         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1805             try (OutputStream output = new FileOutputStream(outputFile)) {
1806                 byte[] buffer = new byte[4096];
1807                 int read;
1808
1809                 while ((read = input.read(buffer)) != -1) {
1810                     output.write(buffer, 0, read);
1811                 }
1812             } catch (FileNotFoundException e) {
1813                 e.printStackTrace();
1814                 return null;
1815             }
1816         } finally {
1817             try {
1818                 Files.delete(tmpFile.toPath());
1819             } catch (IOException e) {
1820                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1821             }
1822         }
1823         return outputFile;
1824     }
1825
1826     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException, MissingConfigurationException {
1827         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1828         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1829     }
1830
1831     @Override
1832     public boolean isRemote() {
1833         return false;
1834     }
1835
1836     @Override
1837     public String getObjectPath() {
1838         return null;
1839     }
1840
1841     private void sendGroups() throws IOException, UntrustedIdentityException {
1842         File groupsFile = IOUtils.createTempFile();
1843
1844         try {
1845             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1846                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1847                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1848                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1849                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1850                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1851                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1852                 }
1853             }
1854
1855             if (groupsFile.exists() && groupsFile.length() > 0) {
1856                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1857                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1858                             .withStream(groupsFileStream)
1859                             .withContentType("application/octet-stream")
1860                             .withLength(groupsFile.length())
1861                             .build();
1862
1863                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1864                 }
1865             }
1866         } finally {
1867             try {
1868                 Files.delete(groupsFile.toPath());
1869             } catch (IOException e) {
1870                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1871             }
1872         }
1873     }
1874
1875     public void sendContacts() throws IOException, UntrustedIdentityException {
1876         File contactsFile = IOUtils.createTempFile();
1877
1878         try {
1879             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1880                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1881                 for (ContactInfo record : account.getContactStore().getContacts()) {
1882                     VerifiedMessage verifiedMessage = null;
1883                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1884                     if (currentIdentity != null) {
1885                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1886                     }
1887
1888                     ProfileKey profileKey = null;
1889                     try {
1890                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1891                     } catch (InvalidInputException ignored) {
1892                     }
1893                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1894                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1895                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1896                             Optional.of(record.messageExpirationTime),
1897                             Optional.fromNullable(record.inboxPosition), record.archived));
1898                 }
1899
1900                 if (account.getProfileKey() != null) {
1901                     // Send our own profile key as well
1902                     out.write(new DeviceContact(account.getSelfAddress(),
1903                             Optional.absent(), Optional.absent(),
1904                             Optional.absent(), Optional.absent(),
1905                             Optional.of(account.getProfileKey()),
1906                             false, Optional.absent(), Optional.absent(), false));
1907                 }
1908             }
1909
1910             if (contactsFile.exists() && contactsFile.length() > 0) {
1911                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1912                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1913                             .withStream(contactsFileStream)
1914                             .withContentType("application/octet-stream")
1915                             .withLength(contactsFile.length())
1916                             .build();
1917
1918                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1919                 }
1920             }
1921         } finally {
1922             try {
1923                 Files.delete(contactsFile.toPath());
1924             } catch (IOException e) {
1925                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1926             }
1927         }
1928     }
1929
1930     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1931         List<SignalServiceAddress> addresses = new ArrayList<>();
1932         for (ContactInfo record : account.getContactStore().getContacts()) {
1933             if (record.blocked) {
1934                 addresses.add(record.getAddress());
1935             }
1936         }
1937         List<byte[]> groupIds = new ArrayList<>();
1938         for (GroupInfo record : account.getGroupStore().getGroups()) {
1939             if (record.blocked) {
1940                 groupIds.add(record.groupId);
1941             }
1942         }
1943         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1944     }
1945
1946     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1947         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1948         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1949     }
1950
1951     public List<ContactInfo> getContacts() {
1952         return account.getContactStore().getContacts();
1953     }
1954
1955     public ContactInfo getContact(String number) {
1956         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1957     }
1958
1959     public GroupInfo getGroup(byte[] groupId) {
1960         return account.getGroupStore().getGroup(groupId);
1961     }
1962
1963     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1964         return account.getSignalProtocolStore().getIdentities();
1965     }
1966
1967     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1968         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1969     }
1970
1971     /**
1972      * Trust this the identity with this fingerprint
1973      *
1974      * @param name        username of the identity
1975      * @param fingerprint Fingerprint
1976      */
1977     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1978         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1979         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1980         if (ids == null) {
1981             return false;
1982         }
1983         for (JsonIdentityKeyStore.Identity id : ids) {
1984             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1985                 continue;
1986             }
1987
1988             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1989             try {
1990                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1991             } catch (IOException | UntrustedIdentityException e) {
1992                 e.printStackTrace();
1993             }
1994             account.save();
1995             return true;
1996         }
1997         return false;
1998     }
1999
2000     /**
2001      * Trust this the identity with this safety number
2002      *
2003      * @param name         username of the identity
2004      * @param safetyNumber Safety number
2005      */
2006     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2007         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2008         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2009         if (ids == null) {
2010             return false;
2011         }
2012         for (JsonIdentityKeyStore.Identity id : ids) {
2013             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2014                 continue;
2015             }
2016
2017             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2018             try {
2019                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2020             } catch (IOException | UntrustedIdentityException e) {
2021                 e.printStackTrace();
2022             }
2023             account.save();
2024             return true;
2025         }
2026         return false;
2027     }
2028
2029     /**
2030      * Trust all keys of this identity without verification
2031      *
2032      * @param name username of the identity
2033      */
2034     public boolean trustIdentityAllKeys(String name) {
2035         SignalServiceAddress address = resolveSignalServiceAddress(name);
2036         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2037         if (ids == null) {
2038             return false;
2039         }
2040         for (JsonIdentityKeyStore.Identity id : ids) {
2041             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2042                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2043                 try {
2044                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2045                 } catch (IOException | UntrustedIdentityException e) {
2046                     e.printStackTrace();
2047                 }
2048             }
2049         }
2050         account.save();
2051         return true;
2052     }
2053
2054     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
2055         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentity(), theirAddress, theirIdentityKey);
2056     }
2057
2058     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2059         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
2060         return resolveSignalServiceAddress(canonicalizedNumber);
2061     }
2062
2063     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2064         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2065
2066         return resolveSignalServiceAddress(address);
2067     }
2068
2069     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2070         if (address.matches(account.getSelfAddress())) {
2071             return account.getSelfAddress();
2072         }
2073
2074         return account.getRecipientStore().resolveServiceAddress(address);
2075     }
2076
2077     public interface ReceiveMessageHandler {
2078
2079         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2080     }
2081 }