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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.signal.storage.SignalAccount;
  22 import org.asamk.signal.storage.contacts.ContactInfo;
  23 import org.asamk.signal.storage.groups.GroupInfo;
  24 import org.asamk.signal.storage.groups.JsonGroupStore;
  25 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  26 import org.asamk.signal.util.IOUtils;
  27 import org.asamk.signal.util.Util;
  28 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  29 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  30 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  31 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  32 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  33 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  34 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  35 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  36 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  37 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  38 import org.signal.libsignal.metadata.SelfSendException;
  39 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  40 import org.signal.zkgroup.InvalidInputException;
  41 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  42 import org.signal.zkgroup.profiles.ProfileKey;
  43 import org.whispersystems.libsignal.IdentityKey;
  44 import org.whispersystems.libsignal.IdentityKeyPair;
  45 import org.whispersystems.libsignal.InvalidKeyException;
  46 import org.whispersystems.libsignal.InvalidMessageException;
  47 import org.whispersystems.libsignal.InvalidVersionException;
  48 import org.whispersystems.libsignal.ecc.Curve;
  49 import org.whispersystems.libsignal.ecc.ECKeyPair;
  50 import org.whispersystems.libsignal.ecc.ECPublicKey;
  51 import org.whispersystems.libsignal.state.PreKeyRecord;
  52 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  53 import org.whispersystems.libsignal.util.KeyHelper;
  54 import org.whispersystems.libsignal.util.Medium;
  55 import org.whispersystems.libsignal.util.Pair;
  56 import org.whispersystems.libsignal.util.guava.Optional;
  57 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  58 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  59 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  60 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  61 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  62 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  63 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  64 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  65 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  66 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  67 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  68 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  69 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  70 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  71 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  72 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  73 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  74 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  79 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  80 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  81 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  82 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  83 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  84 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  85 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  86 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  87 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  88 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  89 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  90 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  91 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  92 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
  93 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  94 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  95 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  96 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
  97 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  98 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  99 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 100 import org.whispersystems.signalservice.api.util.SleepTimer;
 101 import org.whispersystems.signalservice.api.util.StreamDetails;
 102 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 103 import org.whispersystems.signalservice.api.util.UuidUtil;
 104 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 105 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 106 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 107 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 108 import org.whispersystems.signalservice.internal.util.Hex;
 109 import org.whispersystems.util.Base64;
 110
 111 import java.io.Closeable;
 112 import java.io.File;
 113 import java.io.FileInputStream;
 114 import java.io.FileNotFoundException;
 115 import java.io.FileOutputStream;
 116 import java.io.IOException;
 117 import java.io.InputStream;
 118 import java.io.OutputStream;
 119 import java.net.URI;
 120 import java.net.URISyntaxException;
 121 import java.net.URLEncoder;
 122 import java.nio.file.Files;
 123 import java.nio.file.Paths;
 124 import java.nio.file.StandardCopyOption;
 125 import java.util.ArrayList;
 126 import java.util.Arrays;
 127 import java.util.Collection;
 128 import java.util.Collections;
 129 import java.util.Date;
 130 import java.util.HashSet;
 131 import java.util.LinkedList;
 132 import java.util.List;
 133 import java.util.Locale;
 134 import java.util.Objects;
 135 import java.util.Set;
 136 import java.util.UUID;
 137 import java.util.concurrent.ExecutionException;
 138 import java.util.concurrent.ExecutorService;
 139 import java.util.concurrent.TimeUnit;
 140 import java.util.concurrent.TimeoutException;
 141 import java.util.stream.Collectors;
 142 import java.util.zip.ZipEntry;
 143 import java.util.zip.ZipFile;
 144
 145 public class Manager implements Closeable {
 146
 147     private final SleepTimer timer = new UptimeSleepTimer();
 148     private final SignalServiceConfiguration serviceConfiguration;
 149     private final String userAgent;
 150
 151     private final SignalAccount account;
 152     private final PathConfig pathConfig;
 153     private SignalServiceAccountManager accountManager;
 154     private SignalServiceMessagePipe messagePipe = null;
 155     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 156
 157     public Manager(SignalAccount account, PathConfig pathConfig, SignalServiceConfiguration serviceConfiguration, String userAgent) {
 158         this.account = account;
 159         this.pathConfig = pathConfig;
 160         this.serviceConfiguration = serviceConfiguration;
 161         this.userAgent = userAgent;
 162         this.accountManager = createSignalServiceAccountManager();
 163
 164         this.account.setResolver(this::resolveSignalServiceAddress);
 165     }
 166
 167     public String getUsername() {
 168         return account.getUsername();
 169     }
 170
 171     public SignalServiceAddress getSelfAddress() {
 172         return account.getSelfAddress();
 173     }
 174
 175     private SignalServiceAccountManager createSignalServiceAccountManager() {
 176         return new SignalServiceAccountManager(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), userAgent, timer);
 177     }
 178
 179     private IdentityKeyPair getIdentityKeyPair() {
 180         return account.getSignalProtocolStore().getIdentityKeyPair();
 181     }
 182
 183     public int getDeviceId() {
 184         return account.getDeviceId();
 185     }
 186
 187     private String getMessageCachePath() {
 188         return pathConfig.getDataPath() + "/" + account.getUsername() + ".d/msg-cache";
 189     }
 190
 191     private String getMessageCachePath(String sender) {
 192         if (sender == null || sender.isEmpty()) {
 193             return getMessageCachePath();
 194         }
 195
 196         return getMessageCachePath() + "/" + sender.replace("/", "_");
 197     }
 198
 199     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 200         String cachePath = getMessageCachePath(sender);
 201         IOUtils.createPrivateDirectories(cachePath);
 202         return new File(cachePath + "/" + now + "_" + timestamp);
 203     }
 204
 205     public static Manager init(String username, String settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent) throws IOException {
 206         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 207
 208         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 209             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 210             int registrationId = KeyHelper.generateRegistrationId(false);
 211
 212             ProfileKey profileKey = KeyUtils.createProfileKey();
 213             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(), username, identityKey, registrationId, profileKey);
 214             account.save();
 215
 216             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 217         }
 218
 219         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 220
 221         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 222
 223         m.migrateLegacyConfigs();
 224
 225         return m;
 226     }
 227
 228     private void migrateLegacyConfigs() {
 229         // Copy group avatars that were previously stored in the attachments folder
 230         // to the new avatar folder
 231         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 232             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 233                 File avatarFile = getGroupAvatarFile(g.groupId);
 234                 File attachmentFile = getAttachmentFile(new SignalServiceAttachmentRemoteId(g.getAvatarId()));
 235                 if (!avatarFile.exists() && attachmentFile.exists()) {
 236                     try {
 237                         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 238                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 239                     } catch (Exception e) {
 240                         // Ignore
 241                     }
 242                 }
 243             }
 244             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 245             account.save();
 246         }
 247         if (account.getProfileKey() == null) {
 248             // Old config file, creating new profile key
 249             account.setProfileKey(KeyUtils.createProfileKey());
 250             account.save();
 251         }
 252     }
 253
 254     public void checkAccountState() throws IOException {
 255         if (account.isRegistered()) {
 256             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 257                 refreshPreKeys();
 258                 account.save();
 259             }
 260             if (account.getUuid() == null) {
 261                 account.setUuid(accountManager.getOwnUuid());
 262                 account.save();
 263             }
 264         }
 265     }
 266
 267     public boolean isRegistered() {
 268         return account.isRegistered();
 269     }
 270
 271     public void register(boolean voiceVerification) throws IOException {
 272         account.setPassword(KeyUtils.createPassword());
 273
 274         // Resetting UUID, because registering doesn't work otherwise
 275         account.setUuid(null);
 276         accountManager = createSignalServiceAccountManager();
 277
 278         if (voiceVerification) {
 279             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 280         } else {
 281             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 282         }
 283
 284         account.setRegistered(false);
 285         account.save();
 286     }
 287
 288     public void updateAccountAttributes() throws IOException {
 289         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities);
 290     }
 291
 292     public void setProfile(String name, File avatar) throws IOException {
 293         try (final StreamDetails streamDetails = avatar == null ? null : Utils.createStreamDetailsFromFile(avatar)) {
 294             accountManager.setVersionedProfile(account.getUuid(), account.getProfileKey(), name, streamDetails);
 295         }
 296     }
 297
 298     public void unregister() throws IOException {
 299         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 300         // If this is the master device, other users can't send messages to this number anymore.
 301         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 302         accountManager.setGcmId(Optional.absent());
 303
 304         account.setRegistered(false);
 305         account.save();
 306     }
 307
 308     public List<DeviceInfo> getLinkedDevices() throws IOException {
 309         List<DeviceInfo> devices = accountManager.getDevices();
 310         account.setMultiDevice(devices.size() > 1);
 311         account.save();
 312         return devices;
 313     }
 314
 315     public void removeLinkedDevices(int deviceId) throws IOException {
 316         accountManager.removeDevice(deviceId);
 317         List<DeviceInfo> devices = accountManager.getDevices();
 318         account.setMultiDevice(devices.size() > 1);
 319         account.save();
 320     }
 321
 322     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 323         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 324
 325         addDevice(info.deviceIdentifier, info.deviceKey);
 326     }
 327
 328     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 329         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 330         String verificationCode = accountManager.getNewDeviceVerificationCode();
 331
 332         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 333         account.setMultiDevice(true);
 334         account.save();
 335     }
 336
 337     private List<PreKeyRecord> generatePreKeys() {
 338         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 339
 340         final int offset = account.getPreKeyIdOffset();
 341         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 342             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 343             ECKeyPair keyPair = Curve.generateKeyPair();
 344             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 345
 346             records.add(record);
 347         }
 348
 349         account.addPreKeys(records);
 350         account.save();
 351
 352         return records;
 353     }
 354
 355     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 356         try {
 357             ECKeyPair keyPair = Curve.generateKeyPair();
 358             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 359             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 360
 361             account.addSignedPreKey(record);
 362             account.save();
 363
 364             return record;
 365         } catch (InvalidKeyException e) {
 366             throw new AssertionError(e);
 367         }
 368     }
 369
 370     public void verifyAccount(String verificationCode, String pin) throws IOException {
 371         verificationCode = verificationCode.replace("-", "");
 372         account.setSignalingKey(KeyUtils.createSignalingKey());
 373         // TODO make unrestricted unidentified access configurable
 374         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities);
 375
 376         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 377         // TODO response.isStorageCapable()
 378         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 379         account.setRegistered(true);
 380         account.setUuid(uuid);
 381         account.setRegistrationLockPin(pin);
 382         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 383
 384         refreshPreKeys();
 385         account.save();
 386     }
 387
 388     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 389         if (pin.isPresent()) {
 390             account.setRegistrationLockPin(pin.get());
 391             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 392         } else {
 393             account.setRegistrationLockPin(null);
 394             accountManager.removeRegistrationLockV1();
 395         }
 396         account.save();
 397     }
 398
 399     void refreshPreKeys() throws IOException {
 400         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 401         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 402         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 403
 404         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 405     }
 406
 407     private SignalServiceMessageReceiver getMessageReceiver() {
 408         // TODO implement ZkGroup support
 409         final ClientZkProfileOperations clientZkProfileOperations = null;
 410         return new SignalServiceMessageReceiver(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), userAgent, null, timer, clientZkProfileOperations);
 411     }
 412
 413     private SignalServiceMessageSender getMessageSender() {
 414         // TODO implement ZkGroup support
 415         final ClientZkProfileOperations clientZkProfileOperations = null;
 416         final boolean attachmentsV3 = false;
 417         final ExecutorService executor = null;
 418         return new SignalServiceMessageSender(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 419                 account.getDeviceId(), account.getSignalProtocolStore(), userAgent, account.isMultiDevice(), attachmentsV3, Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent(), clientZkProfileOperations, executor);
 420     }
 421
 422     private SignalServiceProfile getEncryptedRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 423         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 424                 : messagePipe;
 425
 426         if (pipe != null) {
 427             try {
 428                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS).getProfile();
 429             } catch (IOException | InterruptedException | ExecutionException | TimeoutException ignored) {
 430             }
 431         }
 432
 433         SignalServiceMessageReceiver receiver = getMessageReceiver();
 434         try {
 435             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).get(10, TimeUnit.SECONDS).getProfile();
 436         } catch (InterruptedException | ExecutionException | TimeoutException e) {
 437             throw new IOException("Failed to retrieve profile", e);
 438         }
 439     }
 440
 441     private SignalProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess, ProfileKey profileKey) throws IOException {
 442         return decryptProfile(getEncryptedRecipientProfile(address, unidentifiedAccess), profileKey);
 443     }
 444
 445     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 446         File file = getGroupAvatarFile(groupId);
 447         if (!file.exists()) {
 448             return Optional.absent();
 449         }
 450
 451         return Optional.of(Utils.createAttachment(file));
 452     }
 453
 454     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 455         File file = getContactAvatarFile(number);
 456         if (!file.exists()) {
 457             return Optional.absent();
 458         }
 459
 460         return Optional.of(Utils.createAttachment(file));
 461     }
 462
 463     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 464         GroupInfo g = account.getGroupStore().getGroup(groupId);
 465         if (g == null) {
 466             throw new GroupNotFoundException(groupId);
 467         }
 468         if (!g.isMember(account.getSelfAddress())) {
 469             throw new NotAGroupMemberException(groupId, g.name);
 470         }
 471         return g;
 472     }
 473
 474     public List<GroupInfo> getGroups() {
 475         return account.getGroupStore().getGroups();
 476     }
 477
 478     public long sendGroupMessage(String messageText, List<String> attachments,
 479                                  byte[] groupId)
 480             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 481         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 482         if (attachments != null) {
 483             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 484         }
 485         if (groupId != null) {
 486             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 487                     .withId(groupId)
 488                     .build();
 489             messageBuilder.asGroupMessage(group);
 490         }
 491
 492         final GroupInfo g = getGroupForSending(groupId);
 493
 494         messageBuilder.withExpiration(g.messageExpirationTime);
 495
 496         return sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 497     }
 498
 499     public void sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 500                                          long targetSentTimestamp, byte[] groupId)
 501             throws IOException, EncapsulatedExceptions, InvalidNumberException, NotAGroupMemberException, GroupNotFoundException {
 502         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 503         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 504                 .withReaction(reaction);
 505         if (groupId != null) {
 506             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 507                     .withId(groupId)
 508                     .build();
 509             messageBuilder.asGroupMessage(group);
 510         }
 511         final GroupInfo g = getGroupForSending(groupId);
 512         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 513     }
 514
 515     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions, NotAGroupMemberException {
 516         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 517                 .withId(groupId)
 518                 .build();
 519
 520         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 521                 .asGroupMessage(group);
 522
 523         final GroupInfo g = getGroupForSending(groupId);
 524         g.removeMember(account.getSelfAddress());
 525         account.getGroupStore().updateGroup(g);
 526
 527         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 528     }
 529
 530     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, NotAGroupMemberException {
 531         GroupInfo g;
 532         if (groupId == null) {
 533             // Create new group
 534             g = new GroupInfo(KeyUtils.createGroupId());
 535             g.addMembers(Collections.singleton(account.getSelfAddress()));
 536         } else {
 537             g = getGroupForSending(groupId);
 538         }
 539
 540         if (name != null) {
 541             g.name = name;
 542         }
 543
 544         if (members != null) {
 545             final Set<String> newE164Members = new HashSet<>();
 546             for (SignalServiceAddress member : members) {
 547                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 548                     continue;
 549                 }
 550                 newE164Members.add(member.getNumber().get());
 551             }
 552
 553             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 554             if (contacts.size() != newE164Members.size()) {
 555                 // Some of the new members are not registered on Signal
 556                 for (ContactTokenDetails contact : contacts) {
 557                     newE164Members.remove(contact.getNumber());
 558                 }
 559                 System.err.println("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 560                 System.err.println("Aborting…");
 561                 System.exit(1);
 562             }
 563
 564             g.addMembers(members);
 565         }
 566
 567         if (avatarFile != null) {
 568             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 569             File aFile = getGroupAvatarFile(g.groupId);
 570             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 571         }
 572
 573         account.getGroupStore().updateGroup(g);
 574
 575         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 576
 577         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 578         return g.groupId;
 579     }
 580
 581     void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 582         if (groupId == null) {
 583             return;
 584         }
 585         GroupInfo g = getGroupForSending(groupId);
 586
 587         if (!g.isMember(recipient)) {
 588             return;
 589         }
 590
 591         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 592
 593         // Send group message only to the recipient who requested it
 594         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 595     }
 596
 597     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) throws AttachmentInvalidException {
 598         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 599                 .withId(g.groupId)
 600                 .withName(g.name)
 601                 .withMembers(new ArrayList<>(g.getMembers()));
 602
 603         File aFile = getGroupAvatarFile(g.groupId);
 604         if (aFile.exists()) {
 605             try {
 606                 group.withAvatar(Utils.createAttachment(aFile));
 607             } catch (IOException e) {
 608                 throw new AttachmentInvalidException(aFile.toString(), e);
 609             }
 610         }
 611
 612         return SignalServiceDataMessage.newBuilder()
 613                 .asGroupMessage(group.build())
 614                 .withExpiration(g.messageExpirationTime);
 615     }
 616
 617     void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 618         if (groupId == null) {
 619             return;
 620         }
 621
 622         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 623                 .withId(groupId);
 624
 625         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 626                 .asGroupMessage(group.build());
 627
 628         // Send group info request message to the recipient who sent us a message with this groupId
 629         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 630     }
 631
 632     void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 633         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 634                 Collections.singletonList(messageId),
 635                 System.currentTimeMillis());
 636
 637         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 638     }
 639
 640     public long sendMessage(String messageText, List<String> attachments,
 641                             List<String> recipients)
 642             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 643         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 644         if (attachments != null) {
 645             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 646
 647             // Upload attachments here, so we only upload once even for multiple recipients
 648             SignalServiceMessageSender messageSender = getMessageSender();
 649             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 650             for (SignalServiceAttachment attachment : attachmentStreams) {
 651                 if (attachment.isStream()) {
 652                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 653                 } else if (attachment.isPointer()) {
 654                     attachmentPointers.add(attachment.asPointer());
 655                 }
 656             }
 657
 658             messageBuilder.withAttachments(attachmentPointers);
 659         }
 660         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 661     }
 662
 663     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 664                                     long targetSentTimestamp, List<String> recipients)
 665             throws IOException, EncapsulatedExceptions, InvalidNumberException {
 666         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 667         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 668                 .withReaction(reaction);
 669         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 670     }
 671
 672     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 673         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 674                 .asEndSessionMessage();
 675
 676         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 677         try {
 678             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 679         } catch (Exception e) {
 680             for (SignalServiceAddress address : signalServiceAddresses) {
 681                 handleEndSession(address);
 682             }
 683             account.save();
 684             throw e;
 685         }
 686     }
 687
 688     public String getContactName(String number) throws InvalidNumberException {
 689         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 690         if (contact == null) {
 691             return "";
 692         } else {
 693             return contact.name;
 694         }
 695     }
 696
 697     public void setContactName(String number, String name) throws InvalidNumberException {
 698         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 699         ContactInfo contact = account.getContactStore().getContact(address);
 700         if (contact == null) {
 701             contact = new ContactInfo(address);
 702         }
 703         contact.name = name;
 704         account.getContactStore().updateContact(contact);
 705         account.save();
 706     }
 707
 708     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 709         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 710     }
 711
 712     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 713         ContactInfo contact = account.getContactStore().getContact(address);
 714         if (contact == null) {
 715             contact = new ContactInfo(address);
 716         }
 717         contact.blocked = blocked;
 718         account.getContactStore().updateContact(contact);
 719         account.save();
 720     }
 721
 722     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 723         GroupInfo group = getGroup(groupId);
 724         if (group == null) {
 725             throw new GroupNotFoundException(groupId);
 726         }
 727
 728         group.blocked = blocked;
 729         account.getGroupStore().updateGroup(group);
 730         account.save();
 731     }
 732
 733     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 734         if (groupId.length == 0) {
 735             groupId = null;
 736         }
 737         if (name.isEmpty()) {
 738             name = null;
 739         }
 740         if (members.isEmpty()) {
 741             members = null;
 742         }
 743         if (avatar.isEmpty()) {
 744             avatar = null;
 745         }
 746         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 747     }
 748
 749     /**
 750      * Change the expiration timer for a contact
 751      */
 752     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
 753         ContactInfo contact = account.getContactStore().getContact(address);
 754         contact.messageExpirationTime = messageExpirationTimer;
 755         account.getContactStore().updateContact(contact);
 756         sendExpirationTimerUpdate(address);
 757         account.save();
 758     }
 759
 760     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
 761         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 762                 .asExpirationUpdate();
 763         sendMessage(messageBuilder, Collections.singleton(address));
 764     }
 765
 766     /**
 767      * Change the expiration timer for a contact
 768      */
 769     public void setExpirationTimer(String number, int messageExpirationTimer) throws IOException, InvalidNumberException {
 770         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 771         setExpirationTimer(address, messageExpirationTimer);
 772     }
 773
 774     /**
 775      * Change the expiration timer for a group
 776      */
 777     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 778         GroupInfo g = account.getGroupStore().getGroup(groupId);
 779         g.messageExpirationTime = messageExpirationTimer;
 780         account.getGroupStore().updateGroup(g);
 781     }
 782
 783     /**
 784      * Upload the sticker pack from path.
 785      *
 786      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 787      * @return if successful, returns the URL to install the sticker pack in the signal app
 788      */
 789     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 790         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 791
 792         SignalServiceMessageSender messageSender = getMessageSender();
 793
 794         byte[] packKey = KeyUtils.createStickerUploadKey();
 795         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 796
 797         try {
 798             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 799                     .toString();
 800         } catch (URISyntaxException e) {
 801             throw new AssertionError(e);
 802         }
 803     }
 804
 805     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 806         ZipFile zip = null;
 807         String rootPath = null;
 808
 809         final File file = new File(path);
 810         if (file.getName().endsWith(".zip")) {
 811             zip = new ZipFile(file);
 812         } else if (file.getName().equals("manifest.json")) {
 813             rootPath = file.getParent();
 814         } else {
 815             throw new StickerPackInvalidException("Could not find manifest.json");
 816         }
 817
 818         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 819
 820         if (pack.stickers == null) {
 821             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 822         }
 823
 824         if (pack.stickers.isEmpty()) {
 825             throw new StickerPackInvalidException("Must include stickers.");
 826         }
 827
 828         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 829         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 830             if (sticker.file == null) {
 831                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 832             }
 833
 834             Pair<InputStream, Long> data;
 835             try {
 836                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 837             } catch (IOException ignored) {
 838                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 839             }
 840
 841             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 842             stickers.add(stickerInfo);
 843         }
 844
 845         StickerInfo cover = null;
 846         if (pack.cover != null) {
 847             if (pack.cover.file == null) {
 848                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 849             }
 850
 851             Pair<InputStream, Long> data;
 852             try {
 853                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 854             } catch (IOException ignored) {
 855                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 856             }
 857
 858             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 859         }
 860
 861         return new SignalServiceStickerManifestUpload(
 862                 pack.title,
 863                 pack.author,
 864                 cover,
 865                 stickers);
 866     }
 867
 868     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 869         InputStream inputStream;
 870         if (zip != null) {
 871             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 872         } else {
 873             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 874         }
 875         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 876     }
 877
 878     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 879         if (zip != null) {
 880             final ZipEntry entry = zip.getEntry(subfile);
 881             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 882         } else {
 883             final File file = new File(rootPath, subfile);
 884             return new Pair<>(new FileInputStream(file), file.length());
 885         }
 886     }
 887
 888     void requestSyncGroups() throws IOException {
 889         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 890         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 891         try {
 892             sendSyncMessage(message);
 893         } catch (UntrustedIdentityException e) {
 894             e.printStackTrace();
 895         }
 896     }
 897
 898     void requestSyncContacts() throws IOException {
 899         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 900         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 901         try {
 902             sendSyncMessage(message);
 903         } catch (UntrustedIdentityException e) {
 904             e.printStackTrace();
 905         }
 906     }
 907
 908     void requestSyncBlocked() throws IOException {
 909         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 910         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 911         try {
 912             sendSyncMessage(message);
 913         } catch (UntrustedIdentityException e) {
 914             e.printStackTrace();
 915         }
 916     }
 917
 918     void requestSyncConfiguration() throws IOException {
 919         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 920         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 921         try {
 922             sendSyncMessage(message);
 923         } catch (UntrustedIdentityException e) {
 924             e.printStackTrace();
 925         }
 926     }
 927
 928     private byte[] getSenderCertificate() {
 929         // TODO support UUID capable sender certificates
 930         // byte[] certificate = accountManager.getSenderCertificate();
 931         byte[] certificate;
 932         try {
 933             certificate = accountManager.getSenderCertificateLegacy();
 934         } catch (IOException e) {
 935             System.err.println("Failed to get sender certificate: " + e);
 936             return null;
 937         }
 938         // TODO cache for a day
 939         return certificate;
 940     }
 941
 942     private byte[] getSelfUnidentifiedAccessKey() {
 943         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 944     }
 945
 946     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
 947         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 948         try {
 949             return new SignalProfile(
 950                     encryptedProfile.getIdentityKey(),
 951                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 952                     encryptedProfile.getAvatar(),
 953                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 954                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
 955             );
 956         } catch (InvalidCiphertextException e) {
 957             return null;
 958         }
 959     }
 960
 961     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 962         ContactInfo contact = account.getContactStore().getContact(recipient);
 963         if (contact == null || contact.profileKey == null) {
 964             return null;
 965         }
 966         ProfileKey theirProfileKey;
 967         try {
 968             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
 969         } catch (InvalidInputException | IOException e) {
 970             throw new AssertionError(e);
 971         }
 972         SignalProfile targetProfile;
 973         try {
 974             targetProfile = getRecipientProfile(recipient, Optional.absent(), theirProfileKey);
 975         } catch (IOException e) {
 976             System.err.println("Failed to get recipient profile: " + e);
 977             return null;
 978         }
 979
 980         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
 981             return null;
 982         }
 983
 984         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
 985             return KeyUtils.createUnrestrictedUnidentifiedAccess();
 986         }
 987
 988         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
 989     }
 990
 991     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 992         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
 993         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
 994
 995         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
 996             return Optional.absent();
 997         }
 998
 999         try {
1000             return Optional.of(new UnidentifiedAccessPair(
1001                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1002                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1003             ));
1004         } catch (InvalidCertificateException e) {
1005             return Optional.absent();
1006         }
1007     }
1008
1009     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1010         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1011         for (SignalServiceAddress recipient : recipients) {
1012             result.add(getAccessFor(recipient));
1013         }
1014         return result;
1015     }
1016
1017     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1018         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1019         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1020         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1021
1022         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1023             return Optional.absent();
1024         }
1025
1026         try {
1027             return Optional.of(new UnidentifiedAccessPair(
1028                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1029                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1030             ));
1031         } catch (InvalidCertificateException e) {
1032             return Optional.absent();
1033         }
1034     }
1035
1036     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1037         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1038
1039         if (unidentifiedAccess.isPresent()) {
1040             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1041         }
1042
1043         return Optional.absent();
1044     }
1045
1046     private void sendSyncMessage(SignalServiceSyncMessage message)
1047             throws IOException, UntrustedIdentityException {
1048         SignalServiceMessageSender messageSender = getMessageSender();
1049         try {
1050             messageSender.sendMessage(message, getAccessForSync());
1051         } catch (UntrustedIdentityException e) {
1052             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1053             throw e;
1054         }
1055     }
1056
1057     /**
1058      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1059      */
1060     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1061             throws EncapsulatedExceptions, IOException {
1062         final long timestamp = System.currentTimeMillis();
1063         messageBuilder.withTimestamp(timestamp);
1064         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1065
1066         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1067         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1068         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1069
1070         for (SendMessageResult result : results) {
1071             if (result.isUnregisteredFailure()) {
1072                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1073             } else if (result.isNetworkFailure()) {
1074                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1075             } else if (result.getIdentityFailure() != null) {
1076                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1077             }
1078         }
1079         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1080             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1081         }
1082         return timestamp;
1083     }
1084
1085     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1086         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1087
1088         for (String number : numbers) {
1089             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1090         }
1091         return signalServiceAddresses;
1092     }
1093
1094     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1095             throws IOException {
1096         if (messagePipe == null) {
1097             messagePipe = getMessageReceiver().createMessagePipe();
1098         }
1099         if (unidentifiedMessagePipe == null) {
1100             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1101         }
1102         SignalServiceDataMessage message = null;
1103         try {
1104             message = messageBuilder.build();
1105             if (message.getGroupContext().isPresent()) {
1106                 try {
1107                     SignalServiceMessageSender messageSender = getMessageSender();
1108                     final boolean isRecipientUpdate = false;
1109                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1110                     for (SendMessageResult r : result) {
1111                         if (r.getIdentityFailure() != null) {
1112                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1113                         }
1114                     }
1115                     return result;
1116                 } catch (UntrustedIdentityException e) {
1117                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1118                     return Collections.emptyList();
1119                 }
1120             } else {
1121                 // Send to all individually, so sync messages are sent correctly
1122                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1123                 for (SignalServiceAddress address : recipients) {
1124                     ContactInfo contact = account.getContactStore().getContact(address);
1125                     if (contact != null) {
1126                         messageBuilder.withExpiration(contact.messageExpirationTime);
1127                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1128                     } else {
1129                         messageBuilder.withExpiration(0);
1130                         messageBuilder.withProfileKey(null);
1131                     }
1132                     message = messageBuilder.build();
1133                     if (address.matches(account.getSelfAddress())) {
1134                         results.add(sendSelfMessage(message));
1135                     } else {
1136                         results.add(sendMessage(address, message));
1137                     }
1138                 }
1139                 return results;
1140             }
1141         } finally {
1142             if (message != null && message.isEndSession()) {
1143                 for (SignalServiceAddress recipient : recipients) {
1144                     handleEndSession(recipient);
1145                 }
1146             }
1147             account.save();
1148         }
1149     }
1150
1151     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1152         SignalServiceMessageSender messageSender = getMessageSender();
1153
1154         SignalServiceAddress recipient = account.getSelfAddress();
1155
1156         final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1157         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1158                 message.getTimestamp(),
1159                 message,
1160                 message.getExpiresInSeconds(),
1161                 Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1162                 false);
1163         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1164
1165         try {
1166             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1167             return SendMessageResult.success(recipient, unidentifiedAccess.isPresent(), false);
1168         } catch (UntrustedIdentityException e) {
1169             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1170             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1171         }
1172     }
1173
1174     private SendMessageResult sendMessage(SignalServiceAddress address, SignalServiceDataMessage message) throws IOException {
1175         SignalServiceMessageSender messageSender = getMessageSender();
1176
1177         try {
1178             return messageSender.sendMessage(address, getAccessFor(address), message);
1179         } catch (UntrustedIdentityException e) {
1180             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1181             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1182         }
1183     }
1184
1185     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1186         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1187         try {
1188             return cipher.decrypt(envelope);
1189         } catch (ProtocolUntrustedIdentityException e) {
1190             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1191                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1192                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1193                 throw identityException;
1194             }
1195             throw new AssertionError(e);
1196         }
1197     }
1198
1199     private void handleEndSession(SignalServiceAddress source) {
1200         account.getSignalProtocolStore().deleteAllSessions(source);
1201     }
1202
1203     private List<HandleAction> handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1204         List<HandleAction> actions = new ArrayList<>();
1205         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1206             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1207             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1208             switch (groupInfo.getType()) {
1209                 case UPDATE:
1210                     if (group == null) {
1211                         group = new GroupInfo(groupInfo.getGroupId());
1212                     }
1213
1214                     if (groupInfo.getAvatar().isPresent()) {
1215                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1216                         if (avatar.isPointer()) {
1217                             try {
1218                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1219                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1220                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1221                             }
1222                         }
1223                     }
1224
1225                     if (groupInfo.getName().isPresent()) {
1226                         group.name = groupInfo.getName().get();
1227                     }
1228
1229                     if (groupInfo.getMembers().isPresent()) {
1230                         group.addMembers(groupInfo.getMembers().get()
1231                                 .stream()
1232                                 .map(this::resolveSignalServiceAddress)
1233                                 .collect(Collectors.toSet()));
1234                     }
1235
1236                     account.getGroupStore().updateGroup(group);
1237                     break;
1238                 case DELIVER:
1239                     if (group == null && !isSync) {
1240                         actions.add(new SendGroupInfoRequestAction(source, groupInfo.getGroupId()));
1241                     }
1242                     break;
1243                 case QUIT:
1244                     if (group != null) {
1245                         group.removeMember(source);
1246                         account.getGroupStore().updateGroup(group);
1247                     }
1248                     break;
1249                 case REQUEST_INFO:
1250                     if (group != null && !isSync) {
1251                         actions.add(new SendGroupUpdateAction(source, group.groupId));
1252                     }
1253                     break;
1254             }
1255         }
1256         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1257         if (message.isEndSession()) {
1258             handleEndSession(conversationPartnerAddress);
1259         }
1260         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1261             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1262                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1263                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1264                 if (group == null) {
1265                     group = new GroupInfo(groupInfo.getGroupId());
1266                 }
1267                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1268                     group.messageExpirationTime = message.getExpiresInSeconds();
1269                     account.getGroupStore().updateGroup(group);
1270                 }
1271             } else {
1272                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1273                 if (contact == null) {
1274                     contact = new ContactInfo(conversationPartnerAddress);
1275                 }
1276                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1277                     contact.messageExpirationTime = message.getExpiresInSeconds();
1278                     account.getContactStore().updateContact(contact);
1279                 }
1280             }
1281         }
1282         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1283             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1284                 if (attachment.isPointer()) {
1285                     try {
1286                         retrieveAttachment(attachment.asPointer());
1287                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1288                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1289                     }
1290                 }
1291             }
1292         }
1293         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1294             if (source.matches(account.getSelfAddress())) {
1295                 try {
1296                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1297                 } catch (InvalidInputException ignored) {
1298                 }
1299                 ContactInfo contact = account.getContactStore().getContact(source);
1300                 if (contact != null) {
1301                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1302                     account.getContactStore().updateContact(contact);
1303                 }
1304             } else {
1305                 ContactInfo contact = account.getContactStore().getContact(source);
1306                 if (contact == null) {
1307                     contact = new ContactInfo(source);
1308                 }
1309                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1310                 account.getContactStore().updateContact(contact);
1311             }
1312         }
1313         if (message.getPreviews().isPresent()) {
1314             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1315             for (SignalServiceDataMessage.Preview preview : previews) {
1316                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1317                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1318                     try {
1319                         retrieveAttachment(attachment);
1320                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1321                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1322                     }
1323                 }
1324             }
1325         }
1326         return actions;
1327     }
1328
1329     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1330         final File cachePath = new File(getMessageCachePath());
1331         if (!cachePath.exists()) {
1332             return;
1333         }
1334         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1335             if (!dir.isDirectory()) {
1336                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1337                 continue;
1338             }
1339
1340             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1341                 if (!fileEntry.isFile()) {
1342                     continue;
1343                 }
1344                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1345             }
1346             // Try to delete directory if empty
1347             dir.delete();
1348         }
1349     }
1350
1351     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1352         SignalServiceEnvelope envelope;
1353         try {
1354             envelope = Utils.loadEnvelope(fileEntry);
1355             if (envelope == null) {
1356                 return;
1357             }
1358         } catch (IOException e) {
1359             e.printStackTrace();
1360             return;
1361         }
1362         SignalServiceContent content = null;
1363         if (!envelope.isReceipt()) {
1364             try {
1365                 content = decryptMessage(envelope);
1366             } catch (Exception e) {
1367                 return;
1368             }
1369             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1370             for (HandleAction action : actions) {
1371                 try {
1372                     action.execute(this);
1373                 } catch (Throwable e) {
1374                     e.printStackTrace();
1375                 }
1376             }
1377         }
1378         account.save();
1379         handler.handleMessage(envelope, content, null);
1380         try {
1381             Files.delete(fileEntry.toPath());
1382         } catch (IOException e) {
1383             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1384         }
1385     }
1386
1387     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1388         retryFailedReceivedMessages(handler, ignoreAttachments);
1389         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1390
1391         Set<HandleAction> queuedActions = null;
1392
1393         if (messagePipe == null) {
1394             messagePipe = messageReceiver.createMessagePipe();
1395         }
1396
1397         boolean hasCaughtUpWithOldMessages = false;
1398
1399         while (true) {
1400             SignalServiceEnvelope envelope;
1401             SignalServiceContent content = null;
1402             Exception exception = null;
1403             final long now = new Date().getTime();
1404             try {
1405                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1406                     // store message on disk, before acknowledging receipt to the server
1407                     try {
1408                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1409                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1410                         Utils.storeEnvelope(envelope1, cacheFile);
1411                     } catch (IOException e) {
1412                         System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1413                     }
1414                 });
1415                 if (result.isPresent()) {
1416                     envelope = result.get();
1417                 } else {
1418                     // Received indicator that server queue is empty
1419                     hasCaughtUpWithOldMessages = true;
1420
1421                     if (queuedActions != null) {
1422                         for (HandleAction action : queuedActions) {
1423                             try {
1424                                 action.execute(this);
1425                             } catch (Throwable e) {
1426                                 e.printStackTrace();
1427                             }
1428                         }
1429                         queuedActions.clear();
1430                         queuedActions = null;
1431                     }
1432
1433                     // Continue to wait another timeout for new messages
1434                     continue;
1435                 }
1436             } catch (TimeoutException e) {
1437                 if (returnOnTimeout)
1438                     return;
1439                 continue;
1440             } catch (InvalidVersionException e) {
1441                 System.err.println("Ignoring error: " + e.getMessage());
1442                 continue;
1443             }
1444             if (envelope.hasSource()) {
1445                 // Store uuid if we don't have it already
1446                 SignalServiceAddress source = envelope.getSourceAddress();
1447                 resolveSignalServiceAddress(source);
1448             }
1449             if (!envelope.isReceipt()) {
1450                 try {
1451                     content = decryptMessage(envelope);
1452                 } catch (Exception e) {
1453                     exception = e;
1454                 }
1455                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1456                 if (hasCaughtUpWithOldMessages) {
1457                     for (HandleAction action : actions) {
1458                         try {
1459                             action.execute(this);
1460                         } catch (Throwable e) {
1461                             e.printStackTrace();
1462                         }
1463                     }
1464                 } else {
1465                     if (queuedActions == null) {
1466                         queuedActions = new HashSet<>();
1467                     }
1468                     queuedActions.addAll(actions);
1469                 }
1470             }
1471             account.save();
1472             if (!isMessageBlocked(envelope, content)) {
1473                 handler.handleMessage(envelope, content, exception);
1474             }
1475             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1476                 File cacheFile = null;
1477                 try {
1478                     cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1479                     Files.delete(cacheFile.toPath());
1480                     // Try to delete directory if empty
1481                     new File(getMessageCachePath()).delete();
1482                 } catch (IOException e) {
1483                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1484                 }
1485             }
1486         }
1487     }
1488
1489     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1490         SignalServiceAddress source;
1491         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1492             source = envelope.getSourceAddress();
1493         } else if (content != null) {
1494             source = content.getSender();
1495         } else {
1496             return false;
1497         }
1498         ContactInfo sourceContact = account.getContactStore().getContact(source);
1499         if (sourceContact != null && sourceContact.blocked) {
1500             return true;
1501         }
1502
1503         if (content != null && content.getDataMessage().isPresent()) {
1504             SignalServiceDataMessage message = content.getDataMessage().get();
1505             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1506                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1507                 GroupInfo group = getGroup(groupInfo.getGroupId());
1508                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1509                     return true;
1510                 }
1511             }
1512         }
1513         return false;
1514     }
1515
1516     private List<HandleAction> handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1517         List<HandleAction> actions = new ArrayList<>();
1518         if (content != null) {
1519             SignalServiceAddress sender;
1520             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1521                 sender = envelope.getSourceAddress();
1522             } else {
1523                 sender = content.getSender();
1524             }
1525             // Store uuid if we don't have it already
1526             resolveSignalServiceAddress(sender);
1527
1528             if (content.getDataMessage().isPresent()) {
1529                 SignalServiceDataMessage message = content.getDataMessage().get();
1530
1531                 if (content.isNeedsReceipt()) {
1532                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1533                 }
1534
1535                 actions.addAll(handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments));
1536             }
1537             if (content.getSyncMessage().isPresent()) {
1538                 account.setMultiDevice(true);
1539                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1540                 if (syncMessage.getSent().isPresent()) {
1541                     SentTranscriptMessage message = syncMessage.getSent().get();
1542                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments));
1543                 }
1544                 if (syncMessage.getRequest().isPresent()) {
1545                     RequestMessage rm = syncMessage.getRequest().get();
1546                     if (rm.isContactsRequest()) {
1547                         actions.add(SendSyncContactsAction.create());
1548                     }
1549                     if (rm.isGroupsRequest()) {
1550                         actions.add(SendSyncGroupsAction.create());
1551                     }
1552                     if (rm.isBlockedListRequest()) {
1553                         actions.add(SendSyncBlockedListAction.create());
1554                     }
1555                     // TODO Handle rm.isConfigurationRequest();
1556                 }
1557                 if (syncMessage.getGroups().isPresent()) {
1558                     File tmpFile = null;
1559                     try {
1560                         tmpFile = IOUtils.createTempFile();
1561                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1562                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1563                             DeviceGroup g;
1564                             while ((g = s.read()) != null) {
1565                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1566                                 if (syncGroup == null) {
1567                                     syncGroup = new GroupInfo(g.getId());
1568                                 }
1569                                 if (g.getName().isPresent()) {
1570                                     syncGroup.name = g.getName().get();
1571                                 }
1572                                 syncGroup.addMembers(g.getMembers()
1573                                         .stream()
1574                                         .map(this::resolveSignalServiceAddress)
1575                                         .collect(Collectors.toSet()));
1576                                 if (!g.isActive()) {
1577                                     syncGroup.removeMember(account.getSelfAddress());
1578                                 } else {
1579                                     // Add ourself to the member set as it's marked as active
1580                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1581                                 }
1582                                 syncGroup.blocked = g.isBlocked();
1583                                 if (g.getColor().isPresent()) {
1584                                     syncGroup.color = g.getColor().get();
1585                                 }
1586
1587                                 if (g.getAvatar().isPresent()) {
1588                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1589                                 }
1590                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1591                                 syncGroup.archived = g.isArchived();
1592                                 account.getGroupStore().updateGroup(syncGroup);
1593                             }
1594                         }
1595                     } catch (Exception e) {
1596                         e.printStackTrace();
1597                     } finally {
1598                         if (tmpFile != null) {
1599                             try {
1600                                 Files.delete(tmpFile.toPath());
1601                             } catch (IOException e) {
1602                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1603                             }
1604                         }
1605                     }
1606                 }
1607                 if (syncMessage.getBlockedList().isPresent()) {
1608                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1609                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1610                         setContactBlocked(resolveSignalServiceAddress(address), true);
1611                     }
1612                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1613                         try {
1614                             setGroupBlocked(groupId, true);
1615                         } catch (GroupNotFoundException e) {
1616                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1617                         }
1618                     }
1619                 }
1620                 if (syncMessage.getContacts().isPresent()) {
1621                     File tmpFile = null;
1622                     try {
1623                         tmpFile = IOUtils.createTempFile();
1624                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1625                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1626                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1627                             if (contactsMessage.isComplete()) {
1628                                 account.getContactStore().clear();
1629                             }
1630                             DeviceContact c;
1631                             while ((c = s.read()) != null) {
1632                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1633                                     account.setProfileKey(c.getProfileKey().get());
1634                                 }
1635                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1636                                 ContactInfo contact = account.getContactStore().getContact(address);
1637                                 if (contact == null) {
1638                                     contact = new ContactInfo(address);
1639                                 }
1640                                 if (c.getName().isPresent()) {
1641                                     contact.name = c.getName().get();
1642                                 }
1643                                 if (c.getColor().isPresent()) {
1644                                     contact.color = c.getColor().get();
1645                                 }
1646                                 if (c.getProfileKey().isPresent()) {
1647                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1648                                 }
1649                                 if (c.getVerified().isPresent()) {
1650                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1651                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1652                                 }
1653                                 if (c.getExpirationTimer().isPresent()) {
1654                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1655                                 }
1656                                 contact.blocked = c.isBlocked();
1657                                 contact.inboxPosition = c.getInboxPosition().orNull();
1658                                 contact.archived = c.isArchived();
1659                                 account.getContactStore().updateContact(contact);
1660
1661                                 if (c.getAvatar().isPresent()) {
1662                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1663                                 }
1664                             }
1665                         }
1666                     } catch (Exception e) {
1667                         e.printStackTrace();
1668                     } finally {
1669                         if (tmpFile != null) {
1670                             try {
1671                                 Files.delete(tmpFile.toPath());
1672                             } catch (IOException e) {
1673                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1674                             }
1675                         }
1676                     }
1677                 }
1678                 if (syncMessage.getVerified().isPresent()) {
1679                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1680                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1681                 }
1682                 if (syncMessage.getConfiguration().isPresent()) {
1683                     // TODO
1684                 }
1685             }
1686         }
1687         return actions;
1688     }
1689
1690     private File getContactAvatarFile(String number) {
1691         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
1692     }
1693
1694     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException, MissingConfigurationException {
1695         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1696         if (attachment.isPointer()) {
1697             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1698             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1699         } else {
1700             SignalServiceAttachmentStream stream = attachment.asStream();
1701             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1702         }
1703     }
1704
1705     private File getGroupAvatarFile(byte[] groupId) {
1706         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1707     }
1708
1709     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException, MissingConfigurationException {
1710         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1711         if (attachment.isPointer()) {
1712             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1713             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1714         } else {
1715             SignalServiceAttachmentStream stream = attachment.asStream();
1716             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1717         }
1718     }
1719
1720     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1721         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
1722     }
1723
1724     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
1725         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
1726         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
1727     }
1728
1729     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException, MissingConfigurationException {
1730         if (storePreview && pointer.getPreview().isPresent()) {
1731             File previewFile = new File(outputFile + ".preview");
1732             try (OutputStream output = new FileOutputStream(previewFile)) {
1733                 byte[] preview = pointer.getPreview().get();
1734                 output.write(preview, 0, preview.length);
1735             } catch (FileNotFoundException e) {
1736                 e.printStackTrace();
1737                 return null;
1738             }
1739         }
1740
1741         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1742
1743         File tmpFile = IOUtils.createTempFile();
1744         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE)) {
1745             try (OutputStream output = new FileOutputStream(outputFile)) {
1746                 byte[] buffer = new byte[4096];
1747                 int read;
1748
1749                 while ((read = input.read(buffer)) != -1) {
1750                     output.write(buffer, 0, read);
1751                 }
1752             } catch (FileNotFoundException e) {
1753                 e.printStackTrace();
1754                 return null;
1755             }
1756         } finally {
1757             try {
1758                 Files.delete(tmpFile.toPath());
1759             } catch (IOException e) {
1760                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1761             }
1762         }
1763         return outputFile;
1764     }
1765
1766     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException, MissingConfigurationException {
1767         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1768         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
1769     }
1770
1771     void sendGroups() throws IOException, UntrustedIdentityException {
1772         File groupsFile = IOUtils.createTempFile();
1773
1774         try {
1775             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1776                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1777                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1778                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1779                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1780                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1781                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1782                 }
1783             }
1784
1785             if (groupsFile.exists() && groupsFile.length() > 0) {
1786                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1787                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1788                             .withStream(groupsFileStream)
1789                             .withContentType("application/octet-stream")
1790                             .withLength(groupsFile.length())
1791                             .build();
1792
1793                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1794                 }
1795             }
1796         } finally {
1797             try {
1798                 Files.delete(groupsFile.toPath());
1799             } catch (IOException e) {
1800                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1801             }
1802         }
1803     }
1804
1805     public void sendContacts() throws IOException, UntrustedIdentityException {
1806         File contactsFile = IOUtils.createTempFile();
1807
1808         try {
1809             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1810                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1811                 for (ContactInfo record : account.getContactStore().getContacts()) {
1812                     VerifiedMessage verifiedMessage = null;
1813                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1814                     if (currentIdentity != null) {
1815                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1816                     }
1817
1818                     ProfileKey profileKey = null;
1819                     try {
1820                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1821                     } catch (InvalidInputException ignored) {
1822                     }
1823                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1824                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1825                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1826                             Optional.of(record.messageExpirationTime),
1827                             Optional.fromNullable(record.inboxPosition), record.archived));
1828                 }
1829
1830                 if (account.getProfileKey() != null) {
1831                     // Send our own profile key as well
1832                     out.write(new DeviceContact(account.getSelfAddress(),
1833                             Optional.absent(), Optional.absent(),
1834                             Optional.absent(), Optional.absent(),
1835                             Optional.of(account.getProfileKey()),
1836                             false, Optional.absent(), Optional.absent(), false));
1837                 }
1838             }
1839
1840             if (contactsFile.exists() && contactsFile.length() > 0) {
1841                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1842                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1843                             .withStream(contactsFileStream)
1844                             .withContentType("application/octet-stream")
1845                             .withLength(contactsFile.length())
1846                             .build();
1847
1848                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1849                 }
1850             }
1851         } finally {
1852             try {
1853                 Files.delete(contactsFile.toPath());
1854             } catch (IOException e) {
1855                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1856             }
1857         }
1858     }
1859
1860     void sendBlockedList() throws IOException, UntrustedIdentityException {
1861         List<SignalServiceAddress> addresses = new ArrayList<>();
1862         for (ContactInfo record : account.getContactStore().getContacts()) {
1863             if (record.blocked) {
1864                 addresses.add(record.getAddress());
1865             }
1866         }
1867         List<byte[]> groupIds = new ArrayList<>();
1868         for (GroupInfo record : account.getGroupStore().getGroups()) {
1869             if (record.blocked) {
1870                 groupIds.add(record.groupId);
1871             }
1872         }
1873         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1874     }
1875
1876     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1877         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1878         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1879     }
1880
1881     public List<ContactInfo> getContacts() {
1882         return account.getContactStore().getContacts();
1883     }
1884
1885     public ContactInfo getContact(String number) {
1886         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1887     }
1888
1889     public GroupInfo getGroup(byte[] groupId) {
1890         return account.getGroupStore().getGroup(groupId);
1891     }
1892
1893     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1894         return account.getSignalProtocolStore().getIdentities();
1895     }
1896
1897     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1898         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1899     }
1900
1901     /**
1902      * Trust this the identity with this fingerprint
1903      *
1904      * @param name        username of the identity
1905      * @param fingerprint Fingerprint
1906      */
1907     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1908         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1909         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1910         if (ids == null) {
1911             return false;
1912         }
1913         for (JsonIdentityKeyStore.Identity id : ids) {
1914             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1915                 continue;
1916             }
1917
1918             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1919             try {
1920                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1921             } catch (IOException | UntrustedIdentityException e) {
1922                 e.printStackTrace();
1923             }
1924             account.save();
1925             return true;
1926         }
1927         return false;
1928     }
1929
1930     /**
1931      * Trust this the identity with this safety number
1932      *
1933      * @param name         username of the identity
1934      * @param safetyNumber Safety number
1935      */
1936     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1937         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1938         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1939         if (ids == null) {
1940             return false;
1941         }
1942         for (JsonIdentityKeyStore.Identity id : ids) {
1943             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1944                 continue;
1945             }
1946
1947             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1948             try {
1949                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1950             } catch (IOException | UntrustedIdentityException e) {
1951                 e.printStackTrace();
1952             }
1953             account.save();
1954             return true;
1955         }
1956         return false;
1957     }
1958
1959     /**
1960      * Trust all keys of this identity without verification
1961      *
1962      * @param name username of the identity
1963      */
1964     public boolean trustIdentityAllKeys(String name) {
1965         SignalServiceAddress address = resolveSignalServiceAddress(name);
1966         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1967         if (ids == null) {
1968             return false;
1969         }
1970         for (JsonIdentityKeyStore.Identity id : ids) {
1971             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1972                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1973                 try {
1974                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1975                 } catch (IOException | UntrustedIdentityException e) {
1976                     e.printStackTrace();
1977                 }
1978             }
1979         }
1980         account.save();
1981         return true;
1982     }
1983
1984     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
1985         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), theirAddress, theirIdentityKey);
1986     }
1987
1988     void saveAccount() {
1989         account.save();
1990     }
1991
1992     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
1993         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
1994         return resolveSignalServiceAddress(canonicalizedNumber);
1995     }
1996
1997     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
1998         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
1999
2000         return resolveSignalServiceAddress(address);
2001     }
2002
2003     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2004         if (address.matches(account.getSelfAddress())) {
2005             return account.getSelfAddress();
2006         }
2007
2008         return account.getRecipientStore().resolveServiceAddress(address);
2009     }
2010
2011     @Override
2012     public void close() throws IOException {
2013         if (messagePipe != null) {
2014             messagePipe.shutdown();
2015             messagePipe = null;
2016         }
2017
2018         if (unidentifiedMessagePipe != null) {
2019             unidentifiedMessagePipe.shutdown();
2020             unidentifiedMessagePipe = null;
2021         }
2022
2023         account.close();
2024     }
2025
2026     public interface ReceiveMessageHandler {
2027
2028         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2029     }
2030 }