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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.signal.storage.SignalAccount;
  22 import org.asamk.signal.storage.contacts.ContactInfo;
  23 import org.asamk.signal.storage.groups.GroupInfo;
  24 import org.asamk.signal.storage.groups.JsonGroupStore;
  25 import org.asamk.signal.storage.profiles.SignalProfile;
  26 import org.asamk.signal.storage.profiles.SignalProfileEntry;
  27 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  28 import org.asamk.signal.util.IOUtils;
  29 import org.asamk.signal.util.Util;
  30 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  31 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  32 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  33 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  34 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  35 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  36 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  37 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  38 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  39 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  40 import org.signal.libsignal.metadata.SelfSendException;
  41 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  42 import org.signal.zkgroup.InvalidInputException;
  43 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  44 import org.signal.zkgroup.profiles.ProfileKey;
  45 import org.whispersystems.libsignal.IdentityKey;
  46 import org.whispersystems.libsignal.IdentityKeyPair;
  47 import org.whispersystems.libsignal.InvalidKeyException;
  48 import org.whispersystems.libsignal.InvalidMessageException;
  49 import org.whispersystems.libsignal.InvalidVersionException;
  50 import org.whispersystems.libsignal.ecc.Curve;
  51 import org.whispersystems.libsignal.ecc.ECKeyPair;
  52 import org.whispersystems.libsignal.ecc.ECPublicKey;
  53 import org.whispersystems.libsignal.state.PreKeyRecord;
  54 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  55 import org.whispersystems.libsignal.util.KeyHelper;
  56 import org.whispersystems.libsignal.util.Medium;
  57 import org.whispersystems.libsignal.util.Pair;
  58 import org.whispersystems.libsignal.util.guava.Optional;
  59 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  60 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  61 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  62 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  63 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  64 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  65 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  66 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  67 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  68 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  69 import org.whispersystems.signalservice.api.groupsv2.ClientZkOperations;
  70 import org.whispersystems.signalservice.api.groupsv2.GroupsV2Operations;
  71 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  72 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  73 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  74 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  79 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  80 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  81 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  82 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  83 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  84 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  85 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  86 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  87 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  88 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  89 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  90 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  91 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  92 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  93 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  94 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  95 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  96 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
  97 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  98 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  99 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 100 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 101 import org.whispersystems.signalservice.api.util.SleepTimer;
 102 import org.whispersystems.signalservice.api.util.StreamDetails;
 103 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 104 import org.whispersystems.signalservice.api.util.UuidUtil;
 105 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 106 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 107 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 108 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 109 import org.whispersystems.signalservice.internal.util.DynamicCredentialsProvider;
 110 import org.whispersystems.signalservice.internal.util.Hex;
 111 import org.whispersystems.util.Base64;
 112
 113 import java.io.Closeable;
 114 import java.io.File;
 115 import java.io.FileInputStream;
 116 import java.io.FileNotFoundException;
 117 import java.io.FileOutputStream;
 118 import java.io.IOException;
 119 import java.io.InputStream;
 120 import java.io.OutputStream;
 121 import java.net.URI;
 122 import java.net.URISyntaxException;
 123 import java.net.URLEncoder;
 124 import java.nio.charset.StandardCharsets;
 125 import java.nio.file.Files;
 126 import java.nio.file.Paths;
 127 import java.nio.file.StandardCopyOption;
 128 import java.util.ArrayList;
 129 import java.util.Arrays;
 130 import java.util.Collection;
 131 import java.util.Collections;
 132 import java.util.Date;
 133 import java.util.HashSet;
 134 import java.util.List;
 135 import java.util.Locale;
 136 import java.util.Objects;
 137 import java.util.Set;
 138 import java.util.UUID;
 139 import java.util.concurrent.ExecutionException;
 140 import java.util.concurrent.ExecutorService;
 141 import java.util.concurrent.TimeUnit;
 142 import java.util.concurrent.TimeoutException;
 143 import java.util.stream.Collectors;
 144 import java.util.zip.ZipEntry;
 145 import java.util.zip.ZipFile;
 146
 147 import static org.asamk.signal.manager.ServiceConfig.capabilities;
 148
 149 public class Manager implements Closeable {
 150
 151     private final SleepTimer timer = new UptimeSleepTimer();
 152     private final SignalServiceConfiguration serviceConfiguration;
 153     private final String userAgent;
 154
 155     private final SignalAccount account;
 156     private final PathConfig pathConfig;
 157     private SignalServiceAccountManager accountManager;
 158     private SignalServiceMessagePipe messagePipe = null;
 159     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 160     private final boolean discoverableByPhoneNumber = true;
 161
 162     public Manager(SignalAccount account, PathConfig pathConfig, SignalServiceConfiguration serviceConfiguration, String userAgent) {
 163         this.account = account;
 164         this.pathConfig = pathConfig;
 165         this.serviceConfiguration = serviceConfiguration;
 166         this.userAgent = userAgent;
 167         this.accountManager = createSignalServiceAccountManager();
 168
 169         this.account.setResolver(this::resolveSignalServiceAddress);
 170     }
 171
 172     public String getUsername() {
 173         return account.getUsername();
 174     }
 175
 176     public SignalServiceAddress getSelfAddress() {
 177         return account.getSelfAddress();
 178     }
 179
 180     private SignalServiceAccountManager createSignalServiceAccountManager() {
 181         GroupsV2Operations groupsV2Operations;
 182         try {
 183             groupsV2Operations = new GroupsV2Operations(ClientZkOperations.create(serviceConfiguration));
 184         } catch (Throwable ignored) {
 185             groupsV2Operations = null;
 186         }
 187         return new SignalServiceAccountManager(serviceConfiguration,
 188                 new DynamicCredentialsProvider(account.getUuid(), account.getUsername(), account.getPassword(), null, account.getDeviceId()),
 189                 userAgent,
 190                 groupsV2Operations,
 191                 timer);
 192     }
 193
 194     private IdentityKeyPair getIdentityKeyPair() {
 195         return account.getSignalProtocolStore().getIdentityKeyPair();
 196     }
 197
 198     public int getDeviceId() {
 199         return account.getDeviceId();
 200     }
 201
 202     private String getMessageCachePath() {
 203         return pathConfig.getDataPath() + "/" + account.getUsername() + ".d/msg-cache";
 204     }
 205
 206     private String getMessageCachePath(String sender) {
 207         if (sender == null || sender.isEmpty()) {
 208             return getMessageCachePath();
 209         }
 210
 211         return getMessageCachePath() + "/" + sender.replace("/", "_");
 212     }
 213
 214     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 215         String cachePath = getMessageCachePath(sender);
 216         IOUtils.createPrivateDirectories(cachePath);
 217         return new File(cachePath + "/" + now + "_" + timestamp);
 218     }
 219
 220     public static Manager init(String username, String settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent) throws IOException {
 221         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 222
 223         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 224             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 225             int registrationId = KeyHelper.generateRegistrationId(false);
 226
 227             ProfileKey profileKey = KeyUtils.createProfileKey();
 228             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(), username, identityKey, registrationId, profileKey);
 229             account.save();
 230
 231             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 232         }
 233
 234         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 235
 236         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 237
 238         m.migrateLegacyConfigs();
 239
 240         return m;
 241     }
 242
 243     private void migrateLegacyConfigs() {
 244         // Copy group avatars that were previously stored in the attachments folder
 245         // to the new avatar folder
 246         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 247             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 248                 File avatarFile = getGroupAvatarFile(g.groupId);
 249                 File attachmentFile = getAttachmentFile(new SignalServiceAttachmentRemoteId(g.getAvatarId()));
 250                 if (!avatarFile.exists() && attachmentFile.exists()) {
 251                     try {
 252                         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 253                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 254                     } catch (Exception e) {
 255                         // Ignore
 256                     }
 257                 }
 258             }
 259             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 260             account.save();
 261         }
 262         if (account.getProfileKey() == null) {
 263             // Old config file, creating new profile key
 264             account.setProfileKey(KeyUtils.createProfileKey());
 265             account.save();
 266         }
 267         // Store profile keys only in profile store
 268         for (ContactInfo contact : account.getContactStore().getContacts()) {
 269             String profileKeyString = contact.profileKey;
 270             if (profileKeyString == null) {
 271                 continue;
 272             }
 273             final ProfileKey profileKey;
 274             try {
 275                 profileKey = new ProfileKey(Base64.decode(profileKeyString));
 276             } catch (InvalidInputException | IOException e) {
 277                 continue;
 278             }
 279             contact.profileKey = null;
 280             account.getProfileStore().storeProfileKey(contact.getAddress(), profileKey);
 281         }
 282     }
 283
 284     public void checkAccountState() throws IOException {
 285         if (account.isRegistered()) {
 286             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 287                 refreshPreKeys();
 288                 account.save();
 289             }
 290             if (account.getUuid() == null) {
 291                 account.setUuid(accountManager.getOwnUuid());
 292                 account.save();
 293             }
 294         }
 295     }
 296
 297     public boolean isRegistered() {
 298         return account.isRegistered();
 299     }
 300
 301     public void register(boolean voiceVerification) throws IOException {
 302         account.setPassword(KeyUtils.createPassword());
 303
 304         // Resetting UUID, because registering doesn't work otherwise
 305         account.setUuid(null);
 306         accountManager = createSignalServiceAccountManager();
 307
 308         if (voiceVerification) {
 309             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 310         } else {
 311             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 312         }
 313
 314         account.setRegistered(false);
 315         account.save();
 316     }
 317
 318     public void updateAccountAttributes() throws IOException {
 319         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, capabilities, discoverableByPhoneNumber);
 320     }
 321
 322     public void setProfile(String name, File avatar) throws IOException {
 323         try (final StreamDetails streamDetails = avatar == null ? null : Utils.createStreamDetailsFromFile(avatar)) {
 324             accountManager.setVersionedProfile(account.getUuid(), account.getProfileKey(), name, streamDetails);
 325         }
 326     }
 327
 328     public void unregister() throws IOException {
 329         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 330         // If this is the master device, other users can't send messages to this number anymore.
 331         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 332         accountManager.setGcmId(Optional.absent());
 333
 334         account.setRegistered(false);
 335         account.save();
 336     }
 337
 338     public List<DeviceInfo> getLinkedDevices() throws IOException {
 339         List<DeviceInfo> devices = accountManager.getDevices();
 340         account.setMultiDevice(devices.size() > 1);
 341         account.save();
 342         return devices;
 343     }
 344
 345     public void removeLinkedDevices(int deviceId) throws IOException {
 346         accountManager.removeDevice(deviceId);
 347         List<DeviceInfo> devices = accountManager.getDevices();
 348         account.setMultiDevice(devices.size() > 1);
 349         account.save();
 350     }
 351
 352     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 353         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 354
 355         addDevice(info.deviceIdentifier, info.deviceKey);
 356     }
 357
 358     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 359         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 360         String verificationCode = accountManager.getNewDeviceVerificationCode();
 361
 362         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 363         account.setMultiDevice(true);
 364         account.save();
 365     }
 366
 367     private List<PreKeyRecord> generatePreKeys() {
 368         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 369
 370         final int offset = account.getPreKeyIdOffset();
 371         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 372             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 373             ECKeyPair keyPair = Curve.generateKeyPair();
 374             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 375
 376             records.add(record);
 377         }
 378
 379         account.addPreKeys(records);
 380         account.save();
 381
 382         return records;
 383     }
 384
 385     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 386         try {
 387             ECKeyPair keyPair = Curve.generateKeyPair();
 388             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 389             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 390
 391             account.addSignedPreKey(record);
 392             account.save();
 393
 394             return record;
 395         } catch (InvalidKeyException e) {
 396             throw new AssertionError(e);
 397         }
 398     }
 399
 400     public void verifyAccount(String verificationCode, String pin) throws IOException {
 401         verificationCode = verificationCode.replace("-", "");
 402         account.setSignalingKey(KeyUtils.createSignalingKey());
 403         // TODO make unrestricted unidentified access configurable
 404         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, capabilities, discoverableByPhoneNumber);
 405
 406         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 407         // TODO response.isStorageCapable()
 408         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 409         account.setRegistered(true);
 410         account.setUuid(uuid);
 411         account.setRegistrationLockPin(pin);
 412         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 413
 414         refreshPreKeys();
 415         account.save();
 416     }
 417
 418     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 419         if (pin.isPresent()) {
 420             account.setRegistrationLockPin(pin.get());
 421             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 422         } else {
 423             account.setRegistrationLockPin(null);
 424             accountManager.removeRegistrationLockV1();
 425         }
 426         account.save();
 427     }
 428
 429     void refreshPreKeys() throws IOException {
 430         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 431         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 432         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 433
 434         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 435     }
 436
 437     private SignalServiceMessageReceiver getMessageReceiver() {
 438         // TODO implement ZkGroup support
 439         final ClientZkProfileOperations clientZkProfileOperations = null;
 440         return new SignalServiceMessageReceiver(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), userAgent, null, timer, clientZkProfileOperations);
 441     }
 442
 443     private SignalServiceMessageSender getMessageSender() {
 444         // TODO implement ZkGroup support
 445         final ClientZkProfileOperations clientZkProfileOperations = null;
 446         final ExecutorService executor = null;
 447         return new SignalServiceMessageSender(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 448                 account.getDeviceId(), account.getSignalProtocolStore(), userAgent, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent(), clientZkProfileOperations, executor, ServiceConfig.MAX_ENVELOPE_SIZE);
 449     }
 450
 451     private SignalServiceProfile getEncryptedRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 452         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 453                 : messagePipe;
 454
 455         if (pipe != null) {
 456             try {
 457                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS).getProfile();
 458             } catch (IOException | InterruptedException | ExecutionException | TimeoutException ignored) {
 459             }
 460         }
 461
 462         SignalServiceMessageReceiver receiver = getMessageReceiver();
 463         try {
 464             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS).getProfile();
 465         } catch (InterruptedException | ExecutionException | TimeoutException e) {
 466             throw new IOException("Failed to retrieve profile", e);
 467         }
 468     }
 469
 470     private SignalProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess, ProfileKey profileKey) throws IOException {
 471         SignalProfileEntry profileEntry = account.getProfileStore().getProfile(address);
 472         long now = new Date().getTime();
 473         // Profiles are cache for 24h before retrieving them again
 474         if (profileEntry == null || profileEntry.getProfile() == null || now - profileEntry.getLastUpdateTimestamp() > 24 * 60 * 60 * 1000) {
 475             SignalProfile profile = retrieveRecipientProfile(address, unidentifiedAccess, profileKey);
 476             account.getProfileStore().updateProfile(address, profileKey, now, profile);
 477             return profile;
 478         }
 479         return profileEntry.getProfile();
 480     }
 481
 482     private SignalProfile retrieveRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess, ProfileKey profileKey) throws IOException {
 483         final SignalServiceProfile encryptedProfile = getEncryptedRecipientProfile(address, unidentifiedAccess);
 484
 485         File avatarFile = null;
 486         try {
 487             avatarFile = encryptedProfile.getAvatar() == null ? null : retrieveProfileAvatar(address, encryptedProfile.getAvatar(), profileKey);
 488         } catch (Throwable e) {
 489             System.err.println("Failed to retrieve profile avatar, ignoring: " + e.getMessage());
 490         }
 491
 492         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 493         try {
 494             return new SignalProfile(
 495                     encryptedProfile.getIdentityKey(),
 496                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 497                     avatarFile,
 498                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 499                     encryptedProfile.isUnrestrictedUnidentifiedAccess(),
 500                     encryptedProfile.getCapabilities());
 501         } catch (InvalidCiphertextException e) {
 502             return null;
 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     public Pair<Long, List<SendMessageResult>> sendGroupMessage(
 540             String messageText,
 541             List<String> attachments,
 542             byte[] groupId
 543     )
 544             throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 545         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 546         if (attachments != null) {
 547             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 548         }
 549         if (groupId != null) {
 550             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 551                     .withId(groupId)
 552                     .build();
 553             messageBuilder.asGroupMessage(group);
 554         }
 555
 556         final GroupInfo g = getGroupForSending(groupId);
 557
 558         messageBuilder.withExpiration(g.messageExpirationTime);
 559
 560         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 561     }
 562
 563     public Pair<Long, List<SendMessageResult>> sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 564                                                                         long targetSentTimestamp, byte[] groupId)
 565             throws IOException, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 566         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 567         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 568                 .withReaction(reaction);
 569         if (groupId != null) {
 570             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 571                     .withId(groupId)
 572                     .build();
 573             messageBuilder.asGroupMessage(group);
 574         }
 575         final GroupInfo g = getGroupForSending(groupId);
 576         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 577     }
 578
 579     public Pair<Long, List<SendMessageResult>> sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, NotAGroupMemberException {
 580         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 581                 .withId(groupId)
 582                 .build();
 583
 584         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 585                 .asGroupMessage(group);
 586
 587         final GroupInfo g = getGroupForSending(groupId);
 588         g.removeMember(account.getSelfAddress());
 589         account.getGroupStore().updateGroup(g);
 590
 591         return sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 592     }
 593
 594     private Pair<byte[], List<SendMessageResult>> sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 595         GroupInfo g;
 596         if (groupId == null) {
 597             // Create new group
 598             g = new GroupInfo(KeyUtils.createGroupId());
 599             g.addMembers(Collections.singleton(account.getSelfAddress()));
 600         } else {
 601             g = getGroupForSending(groupId);
 602         }
 603
 604         if (name != null) {
 605             g.name = name;
 606         }
 607
 608         if (members != null) {
 609             final Set<String> newE164Members = new HashSet<>();
 610             for (SignalServiceAddress member : members) {
 611                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 612                     continue;
 613                 }
 614                 newE164Members.add(member.getNumber().get());
 615             }
 616
 617             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 618             if (contacts.size() != newE164Members.size()) {
 619                 // Some of the new members are not registered on Signal
 620                 for (ContactTokenDetails contact : contacts) {
 621                     newE164Members.remove(contact.getNumber());
 622                 }
 623                 throw new IOException("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 624             }
 625
 626             g.addMembers(members);
 627         }
 628
 629         if (avatarFile != null) {
 630             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 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         final Pair<Long, List<SendMessageResult>> result = sendMessage(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 640         return new Pair<>(g.groupId, result.second());
 641     }
 642
 643     Pair<Long, List<SendMessageResult>> sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 644         GroupInfo g = getGroupForSending(groupId);
 645
 646         if (!g.isMember(recipient)) {
 647             throw new NotAGroupMemberException(groupId, g.name);
 648         }
 649
 650         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 651
 652         // Send group message only to the recipient who requested it
 653         return sendMessage(messageBuilder, Collections.singleton(recipient));
 654     }
 655
 656     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) throws AttachmentInvalidException {
 657         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 658                 .withId(g.groupId)
 659                 .withName(g.name)
 660                 .withMembers(new ArrayList<>(g.getMembers()));
 661
 662         File aFile = getGroupAvatarFile(g.groupId);
 663         if (aFile.exists()) {
 664             try {
 665                 group.withAvatar(Utils.createAttachment(aFile));
 666             } catch (IOException e) {
 667                 throw new AttachmentInvalidException(aFile.toString(), e);
 668             }
 669         }
 670
 671         return SignalServiceDataMessage.newBuilder()
 672                 .asGroupMessage(group.build())
 673                 .withExpiration(g.messageExpirationTime);
 674     }
 675
 676     Pair<Long, List<SendMessageResult>> sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException {
 677         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 678                 .withId(groupId);
 679
 680         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 681                 .asGroupMessage(group.build());
 682
 683         // Send group info request message to the recipient who sent us a message with this groupId
 684         return sendMessage(messageBuilder, Collections.singleton(recipient));
 685     }
 686
 687     void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 688         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 689                 Collections.singletonList(messageId),
 690                 System.currentTimeMillis());
 691
 692         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 693     }
 694
 695     public Pair<Long, List<SendMessageResult>> sendMessage(String messageText, List<String> attachments,
 696                                                            List<String> recipients)
 697             throws IOException, AttachmentInvalidException, InvalidNumberException {
 698         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 699         if (attachments != null) {
 700             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 701
 702             // Upload attachments here, so we only upload once even for multiple recipients
 703             SignalServiceMessageSender messageSender = getMessageSender();
 704             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 705             for (SignalServiceAttachment attachment : attachmentStreams) {
 706                 if (attachment.isStream()) {
 707                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 708                 } else if (attachment.isPointer()) {
 709                     attachmentPointers.add(attachment.asPointer());
 710                 }
 711             }
 712
 713             messageBuilder.withAttachments(attachmentPointers);
 714         }
 715         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
 716     }
 717
 718     public Pair<Long, List<SendMessageResult>> sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 719                                                                    long targetSentTimestamp, List<String> recipients)
 720             throws IOException, InvalidNumberException {
 721         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 722         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 723                 .withReaction(reaction);
 724         return sendMessage(messageBuilder, getSignalServiceAddresses(recipients));
 725     }
 726
 727     public Pair<Long, List<SendMessageResult>> sendEndSessionMessage(List<String> recipients) throws IOException, InvalidNumberException {
 728         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 729                 .asEndSessionMessage();
 730
 731         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 732         try {
 733             return sendMessage(messageBuilder, signalServiceAddresses);
 734         } catch (Exception e) {
 735             for (SignalServiceAddress address : signalServiceAddresses) {
 736                 handleEndSession(address);
 737             }
 738             account.save();
 739             throw e;
 740         }
 741     }
 742
 743     public String getContactName(String number) throws InvalidNumberException {
 744         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 745         if (contact == null) {
 746             return "";
 747         } else {
 748             return contact.name;
 749         }
 750     }
 751
 752     public void setContactName(String number, String name) throws InvalidNumberException {
 753         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 754         ContactInfo contact = account.getContactStore().getContact(address);
 755         if (contact == null) {
 756             contact = new ContactInfo(address);
 757         }
 758         contact.name = name;
 759         account.getContactStore().updateContact(contact);
 760         account.save();
 761     }
 762
 763     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 764         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 765     }
 766
 767     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 768         ContactInfo contact = account.getContactStore().getContact(address);
 769         if (contact == null) {
 770             contact = new ContactInfo(address);
 771         }
 772         contact.blocked = blocked;
 773         account.getContactStore().updateContact(contact);
 774         account.save();
 775     }
 776
 777     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 778         GroupInfo group = getGroup(groupId);
 779         if (group == null) {
 780             throw new GroupNotFoundException(groupId);
 781         }
 782
 783         group.blocked = blocked;
 784         account.getGroupStore().updateGroup(group);
 785         account.save();
 786     }
 787
 788     public Pair<byte[], List<SendMessageResult>> updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 789         if (groupId.length == 0) {
 790             groupId = null;
 791         }
 792         if (name.isEmpty()) {
 793             name = null;
 794         }
 795         if (members.isEmpty()) {
 796             members = null;
 797         }
 798         if (avatar.isEmpty()) {
 799             avatar = null;
 800         }
 801         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 802     }
 803
 804     /**
 805      * Change the expiration timer for a contact
 806      */
 807     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
 808         ContactInfo contact = account.getContactStore().getContact(address);
 809         contact.messageExpirationTime = messageExpirationTimer;
 810         account.getContactStore().updateContact(contact);
 811         sendExpirationTimerUpdate(address);
 812         account.save();
 813     }
 814
 815     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
 816         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 817                 .asExpirationUpdate();
 818         sendMessage(messageBuilder, Collections.singleton(address));
 819     }
 820
 821     /**
 822      * Change the expiration timer for a contact
 823      */
 824     public void setExpirationTimer(String number, int messageExpirationTimer) throws IOException, InvalidNumberException {
 825         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 826         setExpirationTimer(address, messageExpirationTimer);
 827     }
 828
 829     /**
 830      * Change the expiration timer for a group
 831      */
 832     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 833         GroupInfo g = account.getGroupStore().getGroup(groupId);
 834         g.messageExpirationTime = messageExpirationTimer;
 835         account.getGroupStore().updateGroup(g);
 836     }
 837
 838     /**
 839      * Upload the sticker pack from path.
 840      *
 841      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 842      * @return if successful, returns the URL to install the sticker pack in the signal app
 843      */
 844     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 845         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 846
 847         SignalServiceMessageSender messageSender = getMessageSender();
 848
 849         byte[] packKey = KeyUtils.createStickerUploadKey();
 850         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 851
 852         try {
 853             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, StandardCharsets.UTF_8) + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), StandardCharsets.UTF_8))
 854                     .toString();
 855         } catch (URISyntaxException e) {
 856             throw new AssertionError(e);
 857         }
 858     }
 859
 860     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 861         ZipFile zip = null;
 862         String rootPath = null;
 863
 864         final File file = new File(path);
 865         if (file.getName().endsWith(".zip")) {
 866             zip = new ZipFile(file);
 867         } else if (file.getName().equals("manifest.json")) {
 868             rootPath = file.getParent();
 869         } else {
 870             throw new StickerPackInvalidException("Could not find manifest.json");
 871         }
 872
 873         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 874
 875         if (pack.stickers == null) {
 876             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 877         }
 878
 879         if (pack.stickers.isEmpty()) {
 880             throw new StickerPackInvalidException("Must include stickers.");
 881         }
 882
 883         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 884         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 885             if (sticker.file == null) {
 886                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 887             }
 888
 889             Pair<InputStream, Long> data;
 890             try {
 891                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 892             } catch (IOException ignored) {
 893                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 894             }
 895
 896             String contentType = Utils.getFileMimeType(new File(sticker.file), null);
 897             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""), contentType);
 898             stickers.add(stickerInfo);
 899         }
 900
 901         StickerInfo cover = null;
 902         if (pack.cover != null) {
 903             if (pack.cover.file == null) {
 904                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 905             }
 906
 907             Pair<InputStream, Long> data;
 908             try {
 909                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 910             } catch (IOException ignored) {
 911                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 912             }
 913
 914             String contentType = Utils.getFileMimeType(new File(pack.cover.file), null);
 915             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""), contentType);
 916         }
 917
 918         return new SignalServiceStickerManifestUpload(
 919                 pack.title,
 920                 pack.author,
 921                 cover,
 922                 stickers);
 923     }
 924
 925     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 926         InputStream inputStream;
 927         if (zip != null) {
 928             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 929         } else {
 930             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 931         }
 932         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 933     }
 934
 935     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 936         if (zip != null) {
 937             final ZipEntry entry = zip.getEntry(subfile);
 938             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 939         } else {
 940             final File file = new File(rootPath, subfile);
 941             return new Pair<>(new FileInputStream(file), file.length());
 942         }
 943     }
 944
 945     void requestSyncGroups() throws IOException {
 946         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 947         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 948         try {
 949             sendSyncMessage(message);
 950         } catch (UntrustedIdentityException e) {
 951             e.printStackTrace();
 952         }
 953     }
 954
 955     void requestSyncContacts() throws IOException {
 956         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 957         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 958         try {
 959             sendSyncMessage(message);
 960         } catch (UntrustedIdentityException e) {
 961             e.printStackTrace();
 962         }
 963     }
 964
 965     void requestSyncBlocked() throws IOException {
 966         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 967         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 968         try {
 969             sendSyncMessage(message);
 970         } catch (UntrustedIdentityException e) {
 971             e.printStackTrace();
 972         }
 973     }
 974
 975     void requestSyncConfiguration() throws IOException {
 976         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 977         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 978         try {
 979             sendSyncMessage(message);
 980         } catch (UntrustedIdentityException e) {
 981             e.printStackTrace();
 982         }
 983     }
 984
 985     private byte[] getSenderCertificate() {
 986         // TODO support UUID capable sender certificates
 987         // byte[] certificate = accountManager.getSenderCertificateForPhoneNumberPrivacy();
 988         byte[] certificate;
 989         try {
 990             certificate = accountManager.getSenderCertificate();
 991         } catch (IOException e) {
 992             System.err.println("Failed to get sender certificate: " + e);
 993             return null;
 994         }
 995         // TODO cache for a day
 996         return certificate;
 997     }
 998
 999     private byte[] getSelfUnidentifiedAccessKey() {
1000         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
1001     }
1002
1003     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
1004         ProfileKey theirProfileKey = account.getProfileStore().getProfileKey(recipient);
1005         if (theirProfileKey == null) {
1006             return null;
1007         }
1008         SignalProfile targetProfile;
1009         try {
1010             targetProfile = getRecipientProfile(recipient, Optional.absent(), theirProfileKey);
1011         } catch (IOException e) {
1012             System.err.println("Failed to get recipient profile: " + e);
1013             return null;
1014         }
1015
1016         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
1017             return null;
1018         }
1019
1020         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
1021             return KeyUtils.createUnrestrictedUnidentifiedAccess();
1022         }
1023
1024         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
1025     }
1026
1027     private Optional<UnidentifiedAccessPair> getAccessForSync() {
1028         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1029         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1030
1031         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1032             return Optional.absent();
1033         }
1034
1035         try {
1036             return Optional.of(new UnidentifiedAccessPair(
1037                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1038                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1039             ));
1040         } catch (InvalidCertificateException e) {
1041             return Optional.absent();
1042         }
1043     }
1044
1045     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1046         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1047         for (SignalServiceAddress recipient : recipients) {
1048             result.add(getAccessFor(recipient));
1049         }
1050         return result;
1051     }
1052
1053     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1054         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1055         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1056         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1057
1058         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1059             return Optional.absent();
1060         }
1061
1062         try {
1063             return Optional.of(new UnidentifiedAccessPair(
1064                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1065                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1066             ));
1067         } catch (InvalidCertificateException e) {
1068             return Optional.absent();
1069         }
1070     }
1071
1072     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1073         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1074
1075         if (unidentifiedAccess.isPresent()) {
1076             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1077         }
1078
1079         return Optional.absent();
1080     }
1081
1082     private void sendSyncMessage(SignalServiceSyncMessage message)
1083             throws IOException, UntrustedIdentityException {
1084         SignalServiceMessageSender messageSender = getMessageSender();
1085         try {
1086             messageSender.sendMessage(message, getAccessForSync());
1087         } catch (UntrustedIdentityException e) {
1088             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1089             throw e;
1090         }
1091     }
1092
1093     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1094         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1095
1096         for (String number : numbers) {
1097             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1098         }
1099         return signalServiceAddresses;
1100     }
1101
1102     private Pair<Long, List<SendMessageResult>> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1103             throws IOException {
1104         final long timestamp = System.currentTimeMillis();
1105         messageBuilder.withTimestamp(timestamp);
1106         if (messagePipe == null) {
1107             messagePipe = getMessageReceiver().createMessagePipe();
1108         }
1109         if (unidentifiedMessagePipe == null) {
1110             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1111         }
1112         SignalServiceDataMessage message = null;
1113         try {
1114             message = messageBuilder.build();
1115             if (message.getGroupContext().isPresent()) {
1116                 try {
1117                     SignalServiceMessageSender messageSender = getMessageSender();
1118                     final boolean isRecipientUpdate = false;
1119                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1120                     for (SendMessageResult r : result) {
1121                         if (r.getIdentityFailure() != null) {
1122                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1123                         }
1124                     }
1125                     return new Pair<>(timestamp, result);
1126                 } catch (UntrustedIdentityException e) {
1127                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1128                     return new Pair<>(timestamp, Collections.emptyList());
1129                 }
1130             } else {
1131                 // Send to all individually, so sync messages are sent correctly
1132                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1133                 for (SignalServiceAddress address : recipients) {
1134                     ContactInfo contact = account.getContactStore().getContact(address);
1135                     if (contact != null) {
1136                         messageBuilder.withExpiration(contact.messageExpirationTime);
1137                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1138                     } else {
1139                         messageBuilder.withExpiration(0);
1140                         messageBuilder.withProfileKey(null);
1141                     }
1142                     message = messageBuilder.build();
1143                     if (address.matches(account.getSelfAddress())) {
1144                         results.add(sendSelfMessage(message));
1145                     } else {
1146                         results.add(sendMessage(address, message));
1147                     }
1148                 }
1149                 return new Pair<>(timestamp, results);
1150             }
1151         } finally {
1152             if (message != null && message.isEndSession()) {
1153                 for (SignalServiceAddress recipient : recipients) {
1154                     handleEndSession(recipient);
1155                 }
1156             }
1157             account.save();
1158         }
1159     }
1160
1161     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1162         SignalServiceMessageSender messageSender = getMessageSender();
1163
1164         SignalServiceAddress recipient = account.getSelfAddress();
1165
1166         final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1167         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1168                 message.getTimestamp(),
1169                 message,
1170                 message.getExpiresInSeconds(),
1171                 Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1172                 false);
1173         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1174
1175         try {
1176             long startTime = System.currentTimeMillis();
1177             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1178             return SendMessageResult.success(recipient, unidentifiedAccess.isPresent(), false, System.currentTimeMillis() - startTime);
1179         } catch (UntrustedIdentityException e) {
1180             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1181             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1182         }
1183     }
1184
1185     private SendMessageResult sendMessage(SignalServiceAddress address, SignalServiceDataMessage message) throws IOException {
1186         SignalServiceMessageSender messageSender = getMessageSender();
1187
1188         try {
1189             return messageSender.sendMessage(address, getAccessFor(address), message);
1190         } catch (UntrustedIdentityException e) {
1191             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1192             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1193         }
1194     }
1195
1196     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1197         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1198         try {
1199             return cipher.decrypt(envelope);
1200         } catch (ProtocolUntrustedIdentityException e) {
1201             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1202                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1203                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1204                 throw identityException;
1205             }
1206             throw new AssertionError(e);
1207         }
1208     }
1209
1210     private void handleEndSession(SignalServiceAddress source) {
1211         account.getSignalProtocolStore().deleteAllSessions(source);
1212     }
1213
1214     private List<HandleAction> handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1215         List<HandleAction> actions = new ArrayList<>();
1216         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1217             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1218             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1219             switch (groupInfo.getType()) {
1220                 case UPDATE:
1221                     if (group == null) {
1222                         group = new GroupInfo(groupInfo.getGroupId());
1223                     }
1224
1225                     if (groupInfo.getAvatar().isPresent()) {
1226                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1227                         if (avatar.isPointer()) {
1228                             try {
1229                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1230                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1231                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1232                             }
1233                         }
1234                     }
1235
1236                     if (groupInfo.getName().isPresent()) {
1237                         group.name = groupInfo.getName().get();
1238                     }
1239
1240                     if (groupInfo.getMembers().isPresent()) {
1241                         group.addMembers(groupInfo.getMembers().get()
1242                                 .stream()
1243                                 .map(this::resolveSignalServiceAddress)
1244                                 .collect(Collectors.toSet()));
1245                     }
1246
1247                     account.getGroupStore().updateGroup(group);
1248                     break;
1249                 case DELIVER:
1250                     if (group == null && !isSync) {
1251                         actions.add(new SendGroupInfoRequestAction(source, groupInfo.getGroupId()));
1252                     }
1253                     break;
1254                 case QUIT:
1255                     if (group != null) {
1256                         group.removeMember(source);
1257                         account.getGroupStore().updateGroup(group);
1258                     }
1259                     break;
1260                 case REQUEST_INFO:
1261                     if (group != null && !isSync) {
1262                         actions.add(new SendGroupUpdateAction(source, group.groupId));
1263                     }
1264                     break;
1265             }
1266         }
1267         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1268         if (message.isEndSession()) {
1269             handleEndSession(conversationPartnerAddress);
1270         }
1271         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1272             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1273                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1274                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1275                 if (group == null) {
1276                     group = new GroupInfo(groupInfo.getGroupId());
1277                 }
1278                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1279                     group.messageExpirationTime = message.getExpiresInSeconds();
1280                     account.getGroupStore().updateGroup(group);
1281                 }
1282             } else {
1283                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1284                 if (contact == null) {
1285                     contact = new ContactInfo(conversationPartnerAddress);
1286                 }
1287                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1288                     contact.messageExpirationTime = message.getExpiresInSeconds();
1289                     account.getContactStore().updateContact(contact);
1290                 }
1291             }
1292         }
1293         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1294             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1295                 if (attachment.isPointer()) {
1296                     try {
1297                         retrieveAttachment(attachment.asPointer());
1298                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1299                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1300                     }
1301                 }
1302             }
1303         }
1304         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1305             final ProfileKey profileKey;
1306             try {
1307                 profileKey = new ProfileKey(message.getProfileKey().get());
1308             } catch (InvalidInputException e) {
1309                 throw new AssertionError(e);
1310             }
1311             if (source.matches(account.getSelfAddress())) {
1312                 this.account.setProfileKey(profileKey);
1313             }
1314             this.account.getProfileStore().storeProfileKey(source, profileKey);
1315         }
1316         if (message.getPreviews().isPresent()) {
1317             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1318             for (SignalServiceDataMessage.Preview preview : previews) {
1319                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1320                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1321                     try {
1322                         retrieveAttachment(attachment);
1323                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1324                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1325                     }
1326                 }
1327             }
1328         }
1329         return actions;
1330     }
1331
1332     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1333         final File cachePath = new File(getMessageCachePath());
1334         if (!cachePath.exists()) {
1335             return;
1336         }
1337         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1338             if (!dir.isDirectory()) {
1339                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1340                 continue;
1341             }
1342
1343             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1344                 if (!fileEntry.isFile()) {
1345                     continue;
1346                 }
1347                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1348             }
1349             // Try to delete directory if empty
1350             dir.delete();
1351         }
1352     }
1353
1354     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1355         SignalServiceEnvelope envelope;
1356         try {
1357             envelope = Utils.loadEnvelope(fileEntry);
1358             if (envelope == null) {
1359                 return;
1360             }
1361         } catch (IOException e) {
1362             e.printStackTrace();
1363             return;
1364         }
1365         SignalServiceContent content = null;
1366         if (!envelope.isReceipt()) {
1367             try {
1368                 content = decryptMessage(envelope);
1369             } catch (org.whispersystems.libsignal.UntrustedIdentityException e) {
1370                 return;
1371             } catch (Exception er) {
1372                 // All other errors are not recoverable, so delete the cached message
1373                 try {
1374                     Files.delete(fileEntry.toPath());
1375                 } catch (IOException e) {
1376                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1377                 }
1378                 return;
1379             }
1380             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1381             for (HandleAction action : actions) {
1382                 try {
1383                     action.execute(this);
1384                 } catch (Throwable e) {
1385                     e.printStackTrace();
1386                 }
1387             }
1388         }
1389         account.save();
1390         handler.handleMessage(envelope, content, null);
1391         try {
1392             Files.delete(fileEntry.toPath());
1393         } catch (IOException e) {
1394             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1395         }
1396     }
1397
1398     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1399         retryFailedReceivedMessages(handler, ignoreAttachments);
1400         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1401
1402         Set<HandleAction> queuedActions = null;
1403
1404         if (messagePipe == null) {
1405             messagePipe = messageReceiver.createMessagePipe();
1406         }
1407
1408         boolean hasCaughtUpWithOldMessages = false;
1409
1410         while (true) {
1411             SignalServiceEnvelope envelope;
1412             SignalServiceContent content = null;
1413             Exception exception = null;
1414             final long now = new Date().getTime();
1415             try {
1416                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1417                     // store message on disk, before acknowledging receipt to the server
1418                     try {
1419                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1420                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1421                         Utils.storeEnvelope(envelope1, cacheFile);
1422                     } catch (IOException e) {
1423                         System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1424                     }
1425                 });
1426                 if (result.isPresent()) {
1427                     envelope = result.get();
1428                 } else {
1429                     // Received indicator that server queue is empty
1430                     hasCaughtUpWithOldMessages = true;
1431
1432                     if (queuedActions != null) {
1433                         for (HandleAction action : queuedActions) {
1434                             try {
1435                                 action.execute(this);
1436                             } catch (Throwable e) {
1437                                 e.printStackTrace();
1438                             }
1439                         }
1440                         account.save();
1441                         queuedActions.clear();
1442                         queuedActions = null;
1443                     }
1444
1445                     // Continue to wait another timeout for new messages
1446                     continue;
1447                 }
1448             } catch (TimeoutException e) {
1449                 if (returnOnTimeout)
1450                     return;
1451                 continue;
1452             } catch (InvalidVersionException e) {
1453                 System.err.println("Ignoring error: " + e.getMessage());
1454                 continue;
1455             }
1456
1457             if (envelope.hasSource()) {
1458                 // Store uuid if we don't have it already
1459                 SignalServiceAddress source = envelope.getSourceAddress();
1460                 resolveSignalServiceAddress(source);
1461             }
1462             if (!envelope.isReceipt()) {
1463                 try {
1464                     content = decryptMessage(envelope);
1465                 } catch (Exception e) {
1466                     exception = e;
1467                 }
1468                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1469                 if (hasCaughtUpWithOldMessages) {
1470                     for (HandleAction action : actions) {
1471                         try {
1472                             action.execute(this);
1473                         } catch (Throwable e) {
1474                             e.printStackTrace();
1475                         }
1476                     }
1477                 } else {
1478                     if (queuedActions == null) {
1479                         queuedActions = new HashSet<>();
1480                     }
1481                     queuedActions.addAll(actions);
1482                 }
1483             }
1484             account.save();
1485             if (!isMessageBlocked(envelope, content)) {
1486                 handler.handleMessage(envelope, content, exception);
1487             }
1488             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1489                 File cacheFile = null;
1490                 try {
1491                     String source = envelope.getSourceE164().isPresent() ? envelope.getSourceE164().get() : "";
1492                     cacheFile = getMessageCacheFile(source, now, envelope.getTimestamp());
1493                     Files.delete(cacheFile.toPath());
1494                     // Try to delete directory if empty
1495                     new File(getMessageCachePath()).delete();
1496                 } catch (IOException e) {
1497                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1498                 }
1499             }
1500         }
1501     }
1502
1503     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1504         SignalServiceAddress source;
1505         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1506             source = envelope.getSourceAddress();
1507         } else if (content != null) {
1508             source = content.getSender();
1509         } else {
1510             return false;
1511         }
1512         ContactInfo sourceContact = account.getContactStore().getContact(source);
1513         if (sourceContact != null && sourceContact.blocked) {
1514             return true;
1515         }
1516
1517         if (content != null && content.getDataMessage().isPresent()) {
1518             SignalServiceDataMessage message = content.getDataMessage().get();
1519             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1520                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1521                 GroupInfo group = getGroup(groupInfo.getGroupId());
1522                 return groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked;
1523             }
1524         }
1525         return false;
1526     }
1527
1528     private List<HandleAction> handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1529         List<HandleAction> actions = new ArrayList<>();
1530         if (content != null) {
1531             SignalServiceAddress sender;
1532             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1533                 sender = envelope.getSourceAddress();
1534             } else {
1535                 sender = content.getSender();
1536             }
1537             // Store uuid if we don't have it already
1538             resolveSignalServiceAddress(sender);
1539
1540             if (content.getDataMessage().isPresent()) {
1541                 SignalServiceDataMessage message = content.getDataMessage().get();
1542
1543                 if (content.isNeedsReceipt()) {
1544                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1545                 }
1546
1547                 actions.addAll(handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments));
1548             }
1549             if (content.getSyncMessage().isPresent()) {
1550                 account.setMultiDevice(true);
1551                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1552                 if (syncMessage.getSent().isPresent()) {
1553                     SentTranscriptMessage message = syncMessage.getSent().get();
1554                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments));
1555                 }
1556                 if (syncMessage.getRequest().isPresent()) {
1557                     RequestMessage rm = syncMessage.getRequest().get();
1558                     if (rm.isContactsRequest()) {
1559                         actions.add(SendSyncContactsAction.create());
1560                     }
1561                     if (rm.isGroupsRequest()) {
1562                         actions.add(SendSyncGroupsAction.create());
1563                     }
1564                     if (rm.isBlockedListRequest()) {
1565                         actions.add(SendSyncBlockedListAction.create());
1566                     }
1567                     // TODO Handle rm.isConfigurationRequest();
1568                 }
1569                 if (syncMessage.getGroups().isPresent()) {
1570                     File tmpFile = null;
1571                     try {
1572                         tmpFile = IOUtils.createTempFile();
1573                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1574                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1575                             DeviceGroup g;
1576                             while ((g = s.read()) != null) {
1577                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1578                                 if (syncGroup == null) {
1579                                     syncGroup = new GroupInfo(g.getId());
1580                                 }
1581                                 if (g.getName().isPresent()) {
1582                                     syncGroup.name = g.getName().get();
1583                                 }
1584                                 syncGroup.addMembers(g.getMembers()
1585                                         .stream()
1586                                         .map(this::resolveSignalServiceAddress)
1587                                         .collect(Collectors.toSet()));
1588                                 if (!g.isActive()) {
1589                                     syncGroup.removeMember(account.getSelfAddress());
1590                                 } else {
1591                                     // Add ourself to the member set as it's marked as active
1592                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1593                                 }
1594                                 syncGroup.blocked = g.isBlocked();
1595                                 if (g.getColor().isPresent()) {
1596                                     syncGroup.color = g.getColor().get();
1597                                 }
1598
1599                                 if (g.getAvatar().isPresent()) {
1600                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1601                                 }
1602                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1603                                 syncGroup.archived = g.isArchived();
1604                                 account.getGroupStore().updateGroup(syncGroup);
1605                             }
1606                         }
1607                     } catch (Exception e) {
1608                         e.printStackTrace();
1609                     } finally {
1610                         if (tmpFile != null) {
1611                             try {
1612                                 Files.delete(tmpFile.toPath());
1613                             } catch (IOException e) {
1614                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1615                             }
1616                         }
1617                     }
1618                 }
1619                 if (syncMessage.getBlockedList().isPresent()) {
1620                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1621                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1622                         setContactBlocked(resolveSignalServiceAddress(address), true);
1623                     }
1624                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1625                         try {
1626                             setGroupBlocked(groupId, true);
1627                         } catch (GroupNotFoundException e) {
1628                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1629                         }
1630                     }
1631                 }
1632                 if (syncMessage.getContacts().isPresent()) {
1633                     File tmpFile = null;
1634                     try {
1635                         tmpFile = IOUtils.createTempFile();
1636                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1637                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1638                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1639                             if (contactsMessage.isComplete()) {
1640                                 account.getContactStore().clear();
1641                             }
1642                             DeviceContact c;
1643                             while ((c = s.read()) != null) {
1644                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1645                                     account.setProfileKey(c.getProfileKey().get());
1646                                 }
1647                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1648                                 ContactInfo contact = account.getContactStore().getContact(address);
1649                                 if (contact == null) {
1650                                     contact = new ContactInfo(address);
1651                                 }
1652                                 if (c.getName().isPresent()) {
1653                                     contact.name = c.getName().get();
1654                                 }
1655                                 if (c.getColor().isPresent()) {
1656                                     contact.color = c.getColor().get();
1657                                 }
1658                                 if (c.getProfileKey().isPresent()) {
1659                                     account.getProfileStore().storeProfileKey(address, c.getProfileKey().get());
1660                                 }
1661                                 if (c.getVerified().isPresent()) {
1662                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1663                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1664                                 }
1665                                 if (c.getExpirationTimer().isPresent()) {
1666                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1667                                 }
1668                                 contact.blocked = c.isBlocked();
1669                                 contact.inboxPosition = c.getInboxPosition().orNull();
1670                                 contact.archived = c.isArchived();
1671                                 account.getContactStore().updateContact(contact);
1672
1673                                 if (c.getAvatar().isPresent()) {
1674                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1675                                 }
1676                             }
1677                         }
1678                     } catch (Exception e) {
1679                         e.printStackTrace();
1680                     } finally {
1681                         if (tmpFile != null) {
1682                             try {
1683                                 Files.delete(tmpFile.toPath());
1684                             } catch (IOException e) {
1685                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1686                             }
1687                         }
1688                     }
1689                 }
1690                 if (syncMessage.getVerified().isPresent()) {
1691                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1692                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1693                 }
1694                 if (syncMessage.getConfiguration().isPresent()) {
1695                     // TODO
1696                 }
1697             }
1698         }
1699         return actions;
1700     }
1701
1702     private File getContactAvatarFile(String number) {
1703         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
1704     }
1705
1706     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException, MissingConfigurationException {
1707         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1708         if (attachment.isPointer()) {
1709             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1710             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1711         } else {
1712             SignalServiceAttachmentStream stream = attachment.asStream();
1713             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1714         }
1715     }
1716
1717     private File getGroupAvatarFile(byte[] groupId) {
1718         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1719     }
1720
1721     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException, MissingConfigurationException {
1722         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1723         if (attachment.isPointer()) {
1724             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1725             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1726         } else {
1727             SignalServiceAttachmentStream stream = attachment.asStream();
1728             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1729         }
1730     }
1731
1732     private File getProfileAvatarFile(SignalServiceAddress address) {
1733         return new File(pathConfig.getAvatarsPath(), "profile-" + address.getLegacyIdentifier());
1734     }
1735
1736     private File retrieveProfileAvatar(SignalServiceAddress address, String avatarPath, ProfileKey profileKey) throws IOException {
1737         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1738         SignalServiceMessageReceiver receiver = getMessageReceiver();
1739         File outputFile = getProfileAvatarFile(address);
1740
1741         File tmpFile = IOUtils.createTempFile();
1742         try (InputStream input = receiver.retrieveProfileAvatar(avatarPath, tmpFile, profileKey, ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE)) {
1743             // Use larger buffer size to prevent AssertionError: Need: 12272 but only have: 8192 ...
1744             IOUtils.copyStreamToFile(input, outputFile, (int) ServiceConfig.AVATAR_DOWNLOAD_FAILSAFE_MAX_SIZE);
1745         } finally {
1746             try {
1747                 Files.delete(tmpFile.toPath());
1748             } catch (IOException e) {
1749                 System.err.println("Failed to delete received avatar temp file “" + tmpFile + "”: " + e.getMessage());
1750             }
1751         }
1752         return outputFile;
1753     }
1754
1755     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1756         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
1757     }
1758
1759     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
1760         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
1761         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
1762     }
1763
1764     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException, MissingConfigurationException {
1765         if (storePreview && pointer.getPreview().isPresent()) {
1766             File previewFile = new File(outputFile + ".preview");
1767             try (OutputStream output = new FileOutputStream(previewFile)) {
1768                 byte[] preview = pointer.getPreview().get();
1769                 output.write(preview, 0, preview.length);
1770             } catch (FileNotFoundException e) {
1771                 e.printStackTrace();
1772                 return null;
1773             }
1774         }
1775
1776         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1777
1778         File tmpFile = IOUtils.createTempFile();
1779         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE)) {
1780             IOUtils.copyStreamToFile(input, outputFile);
1781         } finally {
1782             try {
1783                 Files.delete(tmpFile.toPath());
1784             } catch (IOException e) {
1785                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1786             }
1787         }
1788         return outputFile;
1789     }
1790
1791     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException, MissingConfigurationException {
1792         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1793         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
1794     }
1795
1796     void sendGroups() throws IOException, UntrustedIdentityException {
1797         File groupsFile = IOUtils.createTempFile();
1798
1799         try {
1800             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1801                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1802                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1803                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1804                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1805                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1806                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1807                 }
1808             }
1809
1810             if (groupsFile.exists() && groupsFile.length() > 0) {
1811                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1812                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1813                             .withStream(groupsFileStream)
1814                             .withContentType("application/octet-stream")
1815                             .withLength(groupsFile.length())
1816                             .build();
1817
1818                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1819                 }
1820             }
1821         } finally {
1822             try {
1823                 Files.delete(groupsFile.toPath());
1824             } catch (IOException e) {
1825                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1826             }
1827         }
1828     }
1829
1830     public void sendContacts() throws IOException, UntrustedIdentityException {
1831         File contactsFile = IOUtils.createTempFile();
1832
1833         try {
1834             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1835                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1836                 for (ContactInfo record : account.getContactStore().getContacts()) {
1837                     VerifiedMessage verifiedMessage = null;
1838                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1839                     if (currentIdentity != null) {
1840                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1841                     }
1842
1843                     ProfileKey profileKey = account.getProfileStore().getProfileKey(record.getAddress());
1844                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1845                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1846                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1847                             Optional.of(record.messageExpirationTime),
1848                             Optional.fromNullable(record.inboxPosition), record.archived));
1849                 }
1850
1851                 if (account.getProfileKey() != null) {
1852                     // Send our own profile key as well
1853                     out.write(new DeviceContact(account.getSelfAddress(),
1854                             Optional.absent(), Optional.absent(),
1855                             Optional.absent(), Optional.absent(),
1856                             Optional.of(account.getProfileKey()),
1857                             false, Optional.absent(), Optional.absent(), false));
1858                 }
1859             }
1860
1861             if (contactsFile.exists() && contactsFile.length() > 0) {
1862                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1863                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1864                             .withStream(contactsFileStream)
1865                             .withContentType("application/octet-stream")
1866                             .withLength(contactsFile.length())
1867                             .build();
1868
1869                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1870                 }
1871             }
1872         } finally {
1873             try {
1874                 Files.delete(contactsFile.toPath());
1875             } catch (IOException e) {
1876                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1877             }
1878         }
1879     }
1880
1881     void sendBlockedList() throws IOException, UntrustedIdentityException {
1882         List<SignalServiceAddress> addresses = new ArrayList<>();
1883         for (ContactInfo record : account.getContactStore().getContacts()) {
1884             if (record.blocked) {
1885                 addresses.add(record.getAddress());
1886             }
1887         }
1888         List<byte[]> groupIds = new ArrayList<>();
1889         for (GroupInfo record : account.getGroupStore().getGroups()) {
1890             if (record.blocked) {
1891                 groupIds.add(record.groupId);
1892             }
1893         }
1894         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1895     }
1896
1897     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1898         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1899         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1900     }
1901
1902     public List<ContactInfo> getContacts() {
1903         return account.getContactStore().getContacts();
1904     }
1905
1906     public ContactInfo getContact(String number) {
1907         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1908     }
1909
1910     public GroupInfo getGroup(byte[] groupId) {
1911         return account.getGroupStore().getGroup(groupId);
1912     }
1913
1914     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1915         return account.getSignalProtocolStore().getIdentities();
1916     }
1917
1918     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1919         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1920     }
1921
1922     /**
1923      * Trust this the identity with this fingerprint
1924      *
1925      * @param name        username of the identity
1926      * @param fingerprint Fingerprint
1927      */
1928     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1929         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1930         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1931         if (ids == null) {
1932             return false;
1933         }
1934         for (JsonIdentityKeyStore.Identity id : ids) {
1935             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1936                 continue;
1937             }
1938
1939             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1940             try {
1941                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1942             } catch (IOException | UntrustedIdentityException e) {
1943                 e.printStackTrace();
1944             }
1945             account.save();
1946             return true;
1947         }
1948         return false;
1949     }
1950
1951     /**
1952      * Trust this the identity with this safety number
1953      *
1954      * @param name         username of the identity
1955      * @param safetyNumber Safety number
1956      */
1957     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1958         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1959         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1960         if (ids == null) {
1961             return false;
1962         }
1963         for (JsonIdentityKeyStore.Identity id : ids) {
1964             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1965                 continue;
1966             }
1967
1968             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1969             try {
1970                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1971             } catch (IOException | UntrustedIdentityException e) {
1972                 e.printStackTrace();
1973             }
1974             account.save();
1975             return true;
1976         }
1977         return false;
1978     }
1979
1980     /**
1981      * Trust all keys of this identity without verification
1982      *
1983      * @param name username of the identity
1984      */
1985     public boolean trustIdentityAllKeys(String name) {
1986         SignalServiceAddress address = resolveSignalServiceAddress(name);
1987         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1988         if (ids == null) {
1989             return false;
1990         }
1991         for (JsonIdentityKeyStore.Identity id : ids) {
1992             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1993                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1994                 try {
1995                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1996                 } catch (IOException | UntrustedIdentityException e) {
1997                     e.printStackTrace();
1998                 }
1999             }
2000         }
2001         account.save();
2002         return true;
2003     }
2004
2005     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
2006         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), theirAddress, theirIdentityKey);
2007     }
2008
2009     void saveAccount() {
2010         account.save();
2011     }
2012
2013     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2014         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
2015         return resolveSignalServiceAddress(canonicalizedNumber);
2016     }
2017
2018     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2019         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2020
2021         return resolveSignalServiceAddress(address);
2022     }
2023
2024     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2025         if (address.matches(account.getSelfAddress())) {
2026             return account.getSelfAddress();
2027         }
2028
2029         return account.getRecipientStore().resolveServiceAddress(address);
2030     }
2031
2032     @Override
2033     public void close() throws IOException {
2034         if (messagePipe != null) {
2035             messagePipe.shutdown();
2036             messagePipe = null;
2037         }
2038
2039         if (unidentifiedMessagePipe != null) {
2040             unidentifiedMessagePipe.shutdown();
2041             unidentifiedMessagePipe = null;
2042         }
2043
2044         account.close();
2045     }
2046
2047     public interface ReceiveMessageHandler {
2048
2049         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2050     }
2051 }