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                 throw new IOException("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 560             }
 561
 562             g.addMembers(members);
 563         }
 564
 565         if (avatarFile != null) {
 566             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 567             File aFile = getGroupAvatarFile(g.groupId);
 568             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 569         }
 570
 571         account.getGroupStore().updateGroup(g);
 572
 573         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 574
 575         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 576         return g.groupId;
 577     }
 578
 579     void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions, NotAGroupMemberException, GroupNotFoundException, AttachmentInvalidException {
 580         if (groupId == null) {
 581             return;
 582         }
 583         GroupInfo g = getGroupForSending(groupId);
 584
 585         if (!g.isMember(recipient)) {
 586             return;
 587         }
 588
 589         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 590
 591         // Send group message only to the recipient who requested it
 592         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 593     }
 594
 595     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) throws AttachmentInvalidException {
 596         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 597                 .withId(g.groupId)
 598                 .withName(g.name)
 599                 .withMembers(new ArrayList<>(g.getMembers()));
 600
 601         File aFile = getGroupAvatarFile(g.groupId);
 602         if (aFile.exists()) {
 603             try {
 604                 group.withAvatar(Utils.createAttachment(aFile));
 605             } catch (IOException e) {
 606                 throw new AttachmentInvalidException(aFile.toString(), e);
 607             }
 608         }
 609
 610         return SignalServiceDataMessage.newBuilder()
 611                 .asGroupMessage(group.build())
 612                 .withExpiration(g.messageExpirationTime);
 613     }
 614
 615     void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 616         if (groupId == null) {
 617             return;
 618         }
 619
 620         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 621                 .withId(groupId);
 622
 623         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 624                 .asGroupMessage(group.build());
 625
 626         // Send group info request message to the recipient who sent us a message with this groupId
 627         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 628     }
 629
 630     void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 631         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 632                 Collections.singletonList(messageId),
 633                 System.currentTimeMillis());
 634
 635         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 636     }
 637
 638     public long sendMessage(String messageText, List<String> attachments,
 639                             List<String> recipients)
 640             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 641         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 642         if (attachments != null) {
 643             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 644
 645             // Upload attachments here, so we only upload once even for multiple recipients
 646             SignalServiceMessageSender messageSender = getMessageSender();
 647             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 648             for (SignalServiceAttachment attachment : attachmentStreams) {
 649                 if (attachment.isStream()) {
 650                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 651                 } else if (attachment.isPointer()) {
 652                     attachmentPointers.add(attachment.asPointer());
 653                 }
 654             }
 655
 656             messageBuilder.withAttachments(attachmentPointers);
 657         }
 658         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 659     }
 660
 661     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 662                                     long targetSentTimestamp, List<String> recipients)
 663             throws IOException, EncapsulatedExceptions, InvalidNumberException {
 664         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 665         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 666                 .withReaction(reaction);
 667         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 668     }
 669
 670     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 671         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 672                 .asEndSessionMessage();
 673
 674         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 675         try {
 676             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 677         } catch (Exception e) {
 678             for (SignalServiceAddress address : signalServiceAddresses) {
 679                 handleEndSession(address);
 680             }
 681             account.save();
 682             throw e;
 683         }
 684     }
 685
 686     public String getContactName(String number) throws InvalidNumberException {
 687         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 688         if (contact == null) {
 689             return "";
 690         } else {
 691             return contact.name;
 692         }
 693     }
 694
 695     public void setContactName(String number, String name) throws InvalidNumberException {
 696         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 697         ContactInfo contact = account.getContactStore().getContact(address);
 698         if (contact == null) {
 699             contact = new ContactInfo(address);
 700         }
 701         contact.name = name;
 702         account.getContactStore().updateContact(contact);
 703         account.save();
 704     }
 705
 706     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 707         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 708     }
 709
 710     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 711         ContactInfo contact = account.getContactStore().getContact(address);
 712         if (contact == null) {
 713             contact = new ContactInfo(address);
 714         }
 715         contact.blocked = blocked;
 716         account.getContactStore().updateContact(contact);
 717         account.save();
 718     }
 719
 720     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 721         GroupInfo group = getGroup(groupId);
 722         if (group == null) {
 723             throw new GroupNotFoundException(groupId);
 724         }
 725
 726         group.blocked = blocked;
 727         account.getGroupStore().updateGroup(group);
 728         account.save();
 729     }
 730
 731     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException, NotAGroupMemberException {
 732         if (groupId.length == 0) {
 733             groupId = null;
 734         }
 735         if (name.isEmpty()) {
 736             name = null;
 737         }
 738         if (members.isEmpty()) {
 739             members = null;
 740         }
 741         if (avatar.isEmpty()) {
 742             avatar = null;
 743         }
 744         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 745     }
 746
 747     /**
 748      * Change the expiration timer for a contact
 749      */
 750     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) throws IOException {
 751         ContactInfo contact = account.getContactStore().getContact(address);
 752         contact.messageExpirationTime = messageExpirationTimer;
 753         account.getContactStore().updateContact(contact);
 754         sendExpirationTimerUpdate(address);
 755         account.save();
 756     }
 757
 758     private void sendExpirationTimerUpdate(SignalServiceAddress address) throws IOException {
 759         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 760                 .asExpirationUpdate();
 761         sendMessage(messageBuilder, Collections.singleton(address));
 762     }
 763
 764     /**
 765      * Change the expiration timer for a contact
 766      */
 767     public void setExpirationTimer(String number, int messageExpirationTimer) throws IOException, InvalidNumberException {
 768         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 769         setExpirationTimer(address, messageExpirationTimer);
 770     }
 771
 772     /**
 773      * Change the expiration timer for a group
 774      */
 775     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 776         GroupInfo g = account.getGroupStore().getGroup(groupId);
 777         g.messageExpirationTime = messageExpirationTimer;
 778         account.getGroupStore().updateGroup(g);
 779     }
 780
 781     /**
 782      * Upload the sticker pack from path.
 783      *
 784      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 785      * @return if successful, returns the URL to install the sticker pack in the signal app
 786      */
 787     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 788         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 789
 790         SignalServiceMessageSender messageSender = getMessageSender();
 791
 792         byte[] packKey = KeyUtils.createStickerUploadKey();
 793         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 794
 795         try {
 796             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 797                     .toString();
 798         } catch (URISyntaxException e) {
 799             throw new AssertionError(e);
 800         }
 801     }
 802
 803     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 804         ZipFile zip = null;
 805         String rootPath = null;
 806
 807         final File file = new File(path);
 808         if (file.getName().endsWith(".zip")) {
 809             zip = new ZipFile(file);
 810         } else if (file.getName().equals("manifest.json")) {
 811             rootPath = file.getParent();
 812         } else {
 813             throw new StickerPackInvalidException("Could not find manifest.json");
 814         }
 815
 816         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 817
 818         if (pack.stickers == null) {
 819             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 820         }
 821
 822         if (pack.stickers.isEmpty()) {
 823             throw new StickerPackInvalidException("Must include stickers.");
 824         }
 825
 826         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 827         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 828             if (sticker.file == null) {
 829                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 830             }
 831
 832             Pair<InputStream, Long> data;
 833             try {
 834                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 835             } catch (IOException ignored) {
 836                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 837             }
 838
 839             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 840             stickers.add(stickerInfo);
 841         }
 842
 843         StickerInfo cover = null;
 844         if (pack.cover != null) {
 845             if (pack.cover.file == null) {
 846                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 847             }
 848
 849             Pair<InputStream, Long> data;
 850             try {
 851                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 852             } catch (IOException ignored) {
 853                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 854             }
 855
 856             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 857         }
 858
 859         return new SignalServiceStickerManifestUpload(
 860                 pack.title,
 861                 pack.author,
 862                 cover,
 863                 stickers);
 864     }
 865
 866     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 867         InputStream inputStream;
 868         if (zip != null) {
 869             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 870         } else {
 871             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 872         }
 873         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 874     }
 875
 876     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 877         if (zip != null) {
 878             final ZipEntry entry = zip.getEntry(subfile);
 879             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 880         } else {
 881             final File file = new File(rootPath, subfile);
 882             return new Pair<>(new FileInputStream(file), file.length());
 883         }
 884     }
 885
 886     void requestSyncGroups() throws IOException {
 887         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 888         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 889         try {
 890             sendSyncMessage(message);
 891         } catch (UntrustedIdentityException e) {
 892             e.printStackTrace();
 893         }
 894     }
 895
 896     void requestSyncContacts() throws IOException {
 897         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 898         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 899         try {
 900             sendSyncMessage(message);
 901         } catch (UntrustedIdentityException e) {
 902             e.printStackTrace();
 903         }
 904     }
 905
 906     void requestSyncBlocked() throws IOException {
 907         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 908         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 909         try {
 910             sendSyncMessage(message);
 911         } catch (UntrustedIdentityException e) {
 912             e.printStackTrace();
 913         }
 914     }
 915
 916     void requestSyncConfiguration() throws IOException {
 917         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 918         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 919         try {
 920             sendSyncMessage(message);
 921         } catch (UntrustedIdentityException e) {
 922             e.printStackTrace();
 923         }
 924     }
 925
 926     private byte[] getSenderCertificate() {
 927         // TODO support UUID capable sender certificates
 928         // byte[] certificate = accountManager.getSenderCertificate();
 929         byte[] certificate;
 930         try {
 931             certificate = accountManager.getSenderCertificateLegacy();
 932         } catch (IOException e) {
 933             System.err.println("Failed to get sender certificate: " + e);
 934             return null;
 935         }
 936         // TODO cache for a day
 937         return certificate;
 938     }
 939
 940     private byte[] getSelfUnidentifiedAccessKey() {
 941         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 942     }
 943
 944     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
 945         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 946         try {
 947             return new SignalProfile(
 948                     encryptedProfile.getIdentityKey(),
 949                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 950                     encryptedProfile.getAvatar(),
 951                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 952                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
 953             );
 954         } catch (InvalidCiphertextException e) {
 955             return null;
 956         }
 957     }
 958
 959     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 960         ContactInfo contact = account.getContactStore().getContact(recipient);
 961         if (contact == null || contact.profileKey == null) {
 962             return null;
 963         }
 964         ProfileKey theirProfileKey;
 965         try {
 966             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
 967         } catch (InvalidInputException | IOException e) {
 968             throw new AssertionError(e);
 969         }
 970         SignalProfile targetProfile;
 971         try {
 972             targetProfile = getRecipientProfile(recipient, Optional.absent(), theirProfileKey);
 973         } catch (IOException e) {
 974             System.err.println("Failed to get recipient profile: " + e);
 975             return null;
 976         }
 977
 978         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
 979             return null;
 980         }
 981
 982         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
 983             return KeyUtils.createUnrestrictedUnidentifiedAccess();
 984         }
 985
 986         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
 987     }
 988
 989     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 990         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
 991         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
 992
 993         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
 994             return Optional.absent();
 995         }
 996
 997         try {
 998             return Optional.of(new UnidentifiedAccessPair(
 999                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1000                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1001             ));
1002         } catch (InvalidCertificateException e) {
1003             return Optional.absent();
1004         }
1005     }
1006
1007     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1008         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1009         for (SignalServiceAddress recipient : recipients) {
1010             result.add(getAccessFor(recipient));
1011         }
1012         return result;
1013     }
1014
1015     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1016         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1017         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1018         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1019
1020         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1021             return Optional.absent();
1022         }
1023
1024         try {
1025             return Optional.of(new UnidentifiedAccessPair(
1026                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1027                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1028             ));
1029         } catch (InvalidCertificateException e) {
1030             return Optional.absent();
1031         }
1032     }
1033
1034     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1035         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1036
1037         if (unidentifiedAccess.isPresent()) {
1038             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1039         }
1040
1041         return Optional.absent();
1042     }
1043
1044     private void sendSyncMessage(SignalServiceSyncMessage message)
1045             throws IOException, UntrustedIdentityException {
1046         SignalServiceMessageSender messageSender = getMessageSender();
1047         try {
1048             messageSender.sendMessage(message, getAccessForSync());
1049         } catch (UntrustedIdentityException e) {
1050             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1051             throw e;
1052         }
1053     }
1054
1055     /**
1056      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1057      */
1058     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1059             throws EncapsulatedExceptions, IOException {
1060         final long timestamp = System.currentTimeMillis();
1061         messageBuilder.withTimestamp(timestamp);
1062         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1063
1064         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1065         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1066         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1067
1068         for (SendMessageResult result : results) {
1069             if (result.isUnregisteredFailure()) {
1070                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1071             } else if (result.isNetworkFailure()) {
1072                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1073             } else if (result.getIdentityFailure() != null) {
1074                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1075             }
1076         }
1077         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1078             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1079         }
1080         return timestamp;
1081     }
1082
1083     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1084         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1085
1086         for (String number : numbers) {
1087             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1088         }
1089         return signalServiceAddresses;
1090     }
1091
1092     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1093             throws IOException {
1094         if (messagePipe == null) {
1095             messagePipe = getMessageReceiver().createMessagePipe();
1096         }
1097         if (unidentifiedMessagePipe == null) {
1098             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1099         }
1100         SignalServiceDataMessage message = null;
1101         try {
1102             message = messageBuilder.build();
1103             if (message.getGroupContext().isPresent()) {
1104                 try {
1105                     SignalServiceMessageSender messageSender = getMessageSender();
1106                     final boolean isRecipientUpdate = false;
1107                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1108                     for (SendMessageResult r : result) {
1109                         if (r.getIdentityFailure() != null) {
1110                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1111                         }
1112                     }
1113                     return result;
1114                 } catch (UntrustedIdentityException e) {
1115                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1116                     return Collections.emptyList();
1117                 }
1118             } else {
1119                 // Send to all individually, so sync messages are sent correctly
1120                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1121                 for (SignalServiceAddress address : recipients) {
1122                     ContactInfo contact = account.getContactStore().getContact(address);
1123                     if (contact != null) {
1124                         messageBuilder.withExpiration(contact.messageExpirationTime);
1125                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1126                     } else {
1127                         messageBuilder.withExpiration(0);
1128                         messageBuilder.withProfileKey(null);
1129                     }
1130                     message = messageBuilder.build();
1131                     if (address.matches(account.getSelfAddress())) {
1132                         results.add(sendSelfMessage(message));
1133                     } else {
1134                         results.add(sendMessage(address, message));
1135                     }
1136                 }
1137                 return results;
1138             }
1139         } finally {
1140             if (message != null && message.isEndSession()) {
1141                 for (SignalServiceAddress recipient : recipients) {
1142                     handleEndSession(recipient);
1143                 }
1144             }
1145             account.save();
1146         }
1147     }
1148
1149     private SendMessageResult sendSelfMessage(SignalServiceDataMessage message) throws IOException {
1150         SignalServiceMessageSender messageSender = getMessageSender();
1151
1152         SignalServiceAddress recipient = account.getSelfAddress();
1153
1154         final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1155         SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1156                 message.getTimestamp(),
1157                 message,
1158                 message.getExpiresInSeconds(),
1159                 Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1160                 false);
1161         SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1162
1163         try {
1164             messageSender.sendMessage(syncMessage, unidentifiedAccess);
1165             return SendMessageResult.success(recipient, unidentifiedAccess.isPresent(), false);
1166         } catch (UntrustedIdentityException e) {
1167             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1168             return SendMessageResult.identityFailure(recipient, e.getIdentityKey());
1169         }
1170     }
1171
1172     private SendMessageResult sendMessage(SignalServiceAddress address, SignalServiceDataMessage message) throws IOException {
1173         SignalServiceMessageSender messageSender = getMessageSender();
1174
1175         try {
1176             return messageSender.sendMessage(address, getAccessFor(address), message);
1177         } catch (UntrustedIdentityException e) {
1178             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1179             return SendMessageResult.identityFailure(address, e.getIdentityKey());
1180         }
1181     }
1182
1183     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1184         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1185         try {
1186             return cipher.decrypt(envelope);
1187         } catch (ProtocolUntrustedIdentityException e) {
1188             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1189                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1190                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1191                 throw identityException;
1192             }
1193             throw new AssertionError(e);
1194         }
1195     }
1196
1197     private void handleEndSession(SignalServiceAddress source) {
1198         account.getSignalProtocolStore().deleteAllSessions(source);
1199     }
1200
1201     private List<HandleAction> handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1202         List<HandleAction> actions = new ArrayList<>();
1203         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1204             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1205             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1206             switch (groupInfo.getType()) {
1207                 case UPDATE:
1208                     if (group == null) {
1209                         group = new GroupInfo(groupInfo.getGroupId());
1210                     }
1211
1212                     if (groupInfo.getAvatar().isPresent()) {
1213                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1214                         if (avatar.isPointer()) {
1215                             try {
1216                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1217                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1218                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1219                             }
1220                         }
1221                     }
1222
1223                     if (groupInfo.getName().isPresent()) {
1224                         group.name = groupInfo.getName().get();
1225                     }
1226
1227                     if (groupInfo.getMembers().isPresent()) {
1228                         group.addMembers(groupInfo.getMembers().get()
1229                                 .stream()
1230                                 .map(this::resolveSignalServiceAddress)
1231                                 .collect(Collectors.toSet()));
1232                     }
1233
1234                     account.getGroupStore().updateGroup(group);
1235                     break;
1236                 case DELIVER:
1237                     if (group == null && !isSync) {
1238                         actions.add(new SendGroupInfoRequestAction(source, groupInfo.getGroupId()));
1239                     }
1240                     break;
1241                 case QUIT:
1242                     if (group != null) {
1243                         group.removeMember(source);
1244                         account.getGroupStore().updateGroup(group);
1245                     }
1246                     break;
1247                 case REQUEST_INFO:
1248                     if (group != null && !isSync) {
1249                         actions.add(new SendGroupUpdateAction(source, group.groupId));
1250                     }
1251                     break;
1252             }
1253         }
1254         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1255         if (message.isEndSession()) {
1256             handleEndSession(conversationPartnerAddress);
1257         }
1258         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1259             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1260                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1261                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1262                 if (group == null) {
1263                     group = new GroupInfo(groupInfo.getGroupId());
1264                 }
1265                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1266                     group.messageExpirationTime = message.getExpiresInSeconds();
1267                     account.getGroupStore().updateGroup(group);
1268                 }
1269             } else {
1270                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1271                 if (contact == null) {
1272                     contact = new ContactInfo(conversationPartnerAddress);
1273                 }
1274                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1275                     contact.messageExpirationTime = message.getExpiresInSeconds();
1276                     account.getContactStore().updateContact(contact);
1277                 }
1278             }
1279         }
1280         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1281             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1282                 if (attachment.isPointer()) {
1283                     try {
1284                         retrieveAttachment(attachment.asPointer());
1285                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1286                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1287                     }
1288                 }
1289             }
1290         }
1291         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1292             if (source.matches(account.getSelfAddress())) {
1293                 try {
1294                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1295                 } catch (InvalidInputException ignored) {
1296                 }
1297                 ContactInfo contact = account.getContactStore().getContact(source);
1298                 if (contact != null) {
1299                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1300                     account.getContactStore().updateContact(contact);
1301                 }
1302             } else {
1303                 ContactInfo contact = account.getContactStore().getContact(source);
1304                 if (contact == null) {
1305                     contact = new ContactInfo(source);
1306                 }
1307                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1308                 account.getContactStore().updateContact(contact);
1309             }
1310         }
1311         if (message.getPreviews().isPresent()) {
1312             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1313             for (SignalServiceDataMessage.Preview preview : previews) {
1314                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1315                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1316                     try {
1317                         retrieveAttachment(attachment);
1318                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1319                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1320                     }
1321                 }
1322             }
1323         }
1324         return actions;
1325     }
1326
1327     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1328         final File cachePath = new File(getMessageCachePath());
1329         if (!cachePath.exists()) {
1330             return;
1331         }
1332         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1333             if (!dir.isDirectory()) {
1334                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1335                 continue;
1336             }
1337
1338             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1339                 if (!fileEntry.isFile()) {
1340                     continue;
1341                 }
1342                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1343             }
1344             // Try to delete directory if empty
1345             dir.delete();
1346         }
1347     }
1348
1349     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1350         SignalServiceEnvelope envelope;
1351         try {
1352             envelope = Utils.loadEnvelope(fileEntry);
1353             if (envelope == null) {
1354                 return;
1355             }
1356         } catch (IOException e) {
1357             e.printStackTrace();
1358             return;
1359         }
1360         SignalServiceContent content = null;
1361         if (!envelope.isReceipt()) {
1362             try {
1363                 content = decryptMessage(envelope);
1364             } catch (Exception e) {
1365                 return;
1366             }
1367             List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1368             for (HandleAction action : actions) {
1369                 try {
1370                     action.execute(this);
1371                 } catch (Throwable e) {
1372                     e.printStackTrace();
1373                 }
1374             }
1375         }
1376         account.save();
1377         handler.handleMessage(envelope, content, null);
1378         try {
1379             Files.delete(fileEntry.toPath());
1380         } catch (IOException e) {
1381             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1382         }
1383     }
1384
1385     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1386         retryFailedReceivedMessages(handler, ignoreAttachments);
1387         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1388
1389         Set<HandleAction> queuedActions = null;
1390
1391         if (messagePipe == null) {
1392             messagePipe = messageReceiver.createMessagePipe();
1393         }
1394
1395         boolean hasCaughtUpWithOldMessages = false;
1396
1397         while (true) {
1398             SignalServiceEnvelope envelope;
1399             SignalServiceContent content = null;
1400             Exception exception = null;
1401             final long now = new Date().getTime();
1402             try {
1403                 Optional<SignalServiceEnvelope> result = messagePipe.readOrEmpty(timeout, unit, envelope1 -> {
1404                     // store message on disk, before acknowledging receipt to the server
1405                     try {
1406                         String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1407                         File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1408                         Utils.storeEnvelope(envelope1, cacheFile);
1409                     } catch (IOException e) {
1410                         System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1411                     }
1412                 });
1413                 if (result.isPresent()) {
1414                     envelope = result.get();
1415                 } else {
1416                     // Received indicator that server queue is empty
1417                     hasCaughtUpWithOldMessages = true;
1418
1419                     if (queuedActions != null) {
1420                         for (HandleAction action : queuedActions) {
1421                             try {
1422                                 action.execute(this);
1423                             } catch (Throwable e) {
1424                                 e.printStackTrace();
1425                             }
1426                         }
1427                         queuedActions.clear();
1428                         queuedActions = null;
1429                     }
1430
1431                     // Continue to wait another timeout for new messages
1432                     continue;
1433                 }
1434             } catch (TimeoutException e) {
1435                 if (returnOnTimeout)
1436                     return;
1437                 continue;
1438             } catch (InvalidVersionException e) {
1439                 System.err.println("Ignoring error: " + e.getMessage());
1440                 continue;
1441             }
1442             if (envelope.hasSource()) {
1443                 // Store uuid if we don't have it already
1444                 SignalServiceAddress source = envelope.getSourceAddress();
1445                 resolveSignalServiceAddress(source);
1446             }
1447             if (!envelope.isReceipt()) {
1448                 try {
1449                     content = decryptMessage(envelope);
1450                 } catch (Exception e) {
1451                     exception = e;
1452                 }
1453                 List<HandleAction> actions = handleMessage(envelope, content, ignoreAttachments);
1454                 if (hasCaughtUpWithOldMessages) {
1455                     for (HandleAction action : actions) {
1456                         try {
1457                             action.execute(this);
1458                         } catch (Throwable e) {
1459                             e.printStackTrace();
1460                         }
1461                     }
1462                 } else {
1463                     if (queuedActions == null) {
1464                         queuedActions = new HashSet<>();
1465                     }
1466                     queuedActions.addAll(actions);
1467                 }
1468             }
1469             account.save();
1470             if (!isMessageBlocked(envelope, content)) {
1471                 handler.handleMessage(envelope, content, exception);
1472             }
1473             if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1474                 File cacheFile = null;
1475                 try {
1476                     cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1477                     Files.delete(cacheFile.toPath());
1478                     // Try to delete directory if empty
1479                     new File(getMessageCachePath()).delete();
1480                 } catch (IOException e) {
1481                     System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1482                 }
1483             }
1484         }
1485     }
1486
1487     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1488         SignalServiceAddress source;
1489         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1490             source = envelope.getSourceAddress();
1491         } else if (content != null) {
1492             source = content.getSender();
1493         } else {
1494             return false;
1495         }
1496         ContactInfo sourceContact = account.getContactStore().getContact(source);
1497         if (sourceContact != null && sourceContact.blocked) {
1498             return true;
1499         }
1500
1501         if (content != null && content.getDataMessage().isPresent()) {
1502             SignalServiceDataMessage message = content.getDataMessage().get();
1503             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1504                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1505                 GroupInfo group = getGroup(groupInfo.getGroupId());
1506                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1507                     return true;
1508                 }
1509             }
1510         }
1511         return false;
1512     }
1513
1514     private List<HandleAction> handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1515         List<HandleAction> actions = new ArrayList<>();
1516         if (content != null) {
1517             SignalServiceAddress sender;
1518             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1519                 sender = envelope.getSourceAddress();
1520             } else {
1521                 sender = content.getSender();
1522             }
1523             // Store uuid if we don't have it already
1524             resolveSignalServiceAddress(sender);
1525
1526             if (content.getDataMessage().isPresent()) {
1527                 SignalServiceDataMessage message = content.getDataMessage().get();
1528
1529                 if (content.isNeedsReceipt()) {
1530                     actions.add(new SendReceiptAction(sender, message.getTimestamp()));
1531                 }
1532
1533                 actions.addAll(handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments));
1534             }
1535             if (content.getSyncMessage().isPresent()) {
1536                 account.setMultiDevice(true);
1537                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1538                 if (syncMessage.getSent().isPresent()) {
1539                     SentTranscriptMessage message = syncMessage.getSent().get();
1540                     actions.addAll(handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments));
1541                 }
1542                 if (syncMessage.getRequest().isPresent()) {
1543                     RequestMessage rm = syncMessage.getRequest().get();
1544                     if (rm.isContactsRequest()) {
1545                         actions.add(SendSyncContactsAction.create());
1546                     }
1547                     if (rm.isGroupsRequest()) {
1548                         actions.add(SendSyncGroupsAction.create());
1549                     }
1550                     if (rm.isBlockedListRequest()) {
1551                         actions.add(SendSyncBlockedListAction.create());
1552                     }
1553                     // TODO Handle rm.isConfigurationRequest();
1554                 }
1555                 if (syncMessage.getGroups().isPresent()) {
1556                     File tmpFile = null;
1557                     try {
1558                         tmpFile = IOUtils.createTempFile();
1559                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1560                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1561                             DeviceGroup g;
1562                             while ((g = s.read()) != null) {
1563                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1564                                 if (syncGroup == null) {
1565                                     syncGroup = new GroupInfo(g.getId());
1566                                 }
1567                                 if (g.getName().isPresent()) {
1568                                     syncGroup.name = g.getName().get();
1569                                 }
1570                                 syncGroup.addMembers(g.getMembers()
1571                                         .stream()
1572                                         .map(this::resolveSignalServiceAddress)
1573                                         .collect(Collectors.toSet()));
1574                                 if (!g.isActive()) {
1575                                     syncGroup.removeMember(account.getSelfAddress());
1576                                 } else {
1577                                     // Add ourself to the member set as it's marked as active
1578                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1579                                 }
1580                                 syncGroup.blocked = g.isBlocked();
1581                                 if (g.getColor().isPresent()) {
1582                                     syncGroup.color = g.getColor().get();
1583                                 }
1584
1585                                 if (g.getAvatar().isPresent()) {
1586                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1587                                 }
1588                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1589                                 syncGroup.archived = g.isArchived();
1590                                 account.getGroupStore().updateGroup(syncGroup);
1591                             }
1592                         }
1593                     } catch (Exception e) {
1594                         e.printStackTrace();
1595                     } finally {
1596                         if (tmpFile != null) {
1597                             try {
1598                                 Files.delete(tmpFile.toPath());
1599                             } catch (IOException e) {
1600                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1601                             }
1602                         }
1603                     }
1604                 }
1605                 if (syncMessage.getBlockedList().isPresent()) {
1606                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1607                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1608                         setContactBlocked(resolveSignalServiceAddress(address), true);
1609                     }
1610                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1611                         try {
1612                             setGroupBlocked(groupId, true);
1613                         } catch (GroupNotFoundException e) {
1614                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1615                         }
1616                     }
1617                 }
1618                 if (syncMessage.getContacts().isPresent()) {
1619                     File tmpFile = null;
1620                     try {
1621                         tmpFile = IOUtils.createTempFile();
1622                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1623                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1624                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1625                             if (contactsMessage.isComplete()) {
1626                                 account.getContactStore().clear();
1627                             }
1628                             DeviceContact c;
1629                             while ((c = s.read()) != null) {
1630                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1631                                     account.setProfileKey(c.getProfileKey().get());
1632                                 }
1633                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1634                                 ContactInfo contact = account.getContactStore().getContact(address);
1635                                 if (contact == null) {
1636                                     contact = new ContactInfo(address);
1637                                 }
1638                                 if (c.getName().isPresent()) {
1639                                     contact.name = c.getName().get();
1640                                 }
1641                                 if (c.getColor().isPresent()) {
1642                                     contact.color = c.getColor().get();
1643                                 }
1644                                 if (c.getProfileKey().isPresent()) {
1645                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1646                                 }
1647                                 if (c.getVerified().isPresent()) {
1648                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1649                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1650                                 }
1651                                 if (c.getExpirationTimer().isPresent()) {
1652                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1653                                 }
1654                                 contact.blocked = c.isBlocked();
1655                                 contact.inboxPosition = c.getInboxPosition().orNull();
1656                                 contact.archived = c.isArchived();
1657                                 account.getContactStore().updateContact(contact);
1658
1659                                 if (c.getAvatar().isPresent()) {
1660                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1661                                 }
1662                             }
1663                         }
1664                     } catch (Exception e) {
1665                         e.printStackTrace();
1666                     } finally {
1667                         if (tmpFile != null) {
1668                             try {
1669                                 Files.delete(tmpFile.toPath());
1670                             } catch (IOException e) {
1671                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1672                             }
1673                         }
1674                     }
1675                 }
1676                 if (syncMessage.getVerified().isPresent()) {
1677                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1678                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1679                 }
1680                 if (syncMessage.getConfiguration().isPresent()) {
1681                     // TODO
1682                 }
1683             }
1684         }
1685         return actions;
1686     }
1687
1688     private File getContactAvatarFile(String number) {
1689         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
1690     }
1691
1692     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException, MissingConfigurationException {
1693         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1694         if (attachment.isPointer()) {
1695             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1696             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1697         } else {
1698             SignalServiceAttachmentStream stream = attachment.asStream();
1699             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1700         }
1701     }
1702
1703     private File getGroupAvatarFile(byte[] groupId) {
1704         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1705     }
1706
1707     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException, MissingConfigurationException {
1708         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1709         if (attachment.isPointer()) {
1710             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1711             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1712         } else {
1713             SignalServiceAttachmentStream stream = attachment.asStream();
1714             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1715         }
1716     }
1717
1718     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1719         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
1720     }
1721
1722     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
1723         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
1724         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
1725     }
1726
1727     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException, MissingConfigurationException {
1728         if (storePreview && pointer.getPreview().isPresent()) {
1729             File previewFile = new File(outputFile + ".preview");
1730             try (OutputStream output = new FileOutputStream(previewFile)) {
1731                 byte[] preview = pointer.getPreview().get();
1732                 output.write(preview, 0, preview.length);
1733             } catch (FileNotFoundException e) {
1734                 e.printStackTrace();
1735                 return null;
1736             }
1737         }
1738
1739         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1740
1741         File tmpFile = IOUtils.createTempFile();
1742         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE)) {
1743             try (OutputStream output = new FileOutputStream(outputFile)) {
1744                 byte[] buffer = new byte[4096];
1745                 int read;
1746
1747                 while ((read = input.read(buffer)) != -1) {
1748                     output.write(buffer, 0, read);
1749                 }
1750             } catch (FileNotFoundException e) {
1751                 e.printStackTrace();
1752                 return null;
1753             }
1754         } finally {
1755             try {
1756                 Files.delete(tmpFile.toPath());
1757             } catch (IOException e) {
1758                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1759             }
1760         }
1761         return outputFile;
1762     }
1763
1764     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException, MissingConfigurationException {
1765         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1766         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
1767     }
1768
1769     void sendGroups() throws IOException, UntrustedIdentityException {
1770         File groupsFile = IOUtils.createTempFile();
1771
1772         try {
1773             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1774                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1775                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1776                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1777                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1778                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1779                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1780                 }
1781             }
1782
1783             if (groupsFile.exists() && groupsFile.length() > 0) {
1784                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1785                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1786                             .withStream(groupsFileStream)
1787                             .withContentType("application/octet-stream")
1788                             .withLength(groupsFile.length())
1789                             .build();
1790
1791                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1792                 }
1793             }
1794         } finally {
1795             try {
1796                 Files.delete(groupsFile.toPath());
1797             } catch (IOException e) {
1798                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1799             }
1800         }
1801     }
1802
1803     public void sendContacts() throws IOException, UntrustedIdentityException {
1804         File contactsFile = IOUtils.createTempFile();
1805
1806         try {
1807             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1808                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1809                 for (ContactInfo record : account.getContactStore().getContacts()) {
1810                     VerifiedMessage verifiedMessage = null;
1811                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1812                     if (currentIdentity != null) {
1813                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1814                     }
1815
1816                     ProfileKey profileKey = null;
1817                     try {
1818                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1819                     } catch (InvalidInputException ignored) {
1820                     }
1821                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1822                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1823                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1824                             Optional.of(record.messageExpirationTime),
1825                             Optional.fromNullable(record.inboxPosition), record.archived));
1826                 }
1827
1828                 if (account.getProfileKey() != null) {
1829                     // Send our own profile key as well
1830                     out.write(new DeviceContact(account.getSelfAddress(),
1831                             Optional.absent(), Optional.absent(),
1832                             Optional.absent(), Optional.absent(),
1833                             Optional.of(account.getProfileKey()),
1834                             false, Optional.absent(), Optional.absent(), false));
1835                 }
1836             }
1837
1838             if (contactsFile.exists() && contactsFile.length() > 0) {
1839                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1840                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1841                             .withStream(contactsFileStream)
1842                             .withContentType("application/octet-stream")
1843                             .withLength(contactsFile.length())
1844                             .build();
1845
1846                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1847                 }
1848             }
1849         } finally {
1850             try {
1851                 Files.delete(contactsFile.toPath());
1852             } catch (IOException e) {
1853                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1854             }
1855         }
1856     }
1857
1858     void sendBlockedList() throws IOException, UntrustedIdentityException {
1859         List<SignalServiceAddress> addresses = new ArrayList<>();
1860         for (ContactInfo record : account.getContactStore().getContacts()) {
1861             if (record.blocked) {
1862                 addresses.add(record.getAddress());
1863             }
1864         }
1865         List<byte[]> groupIds = new ArrayList<>();
1866         for (GroupInfo record : account.getGroupStore().getGroups()) {
1867             if (record.blocked) {
1868                 groupIds.add(record.groupId);
1869             }
1870         }
1871         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1872     }
1873
1874     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1875         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1876         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1877     }
1878
1879     public List<ContactInfo> getContacts() {
1880         return account.getContactStore().getContacts();
1881     }
1882
1883     public ContactInfo getContact(String number) {
1884         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1885     }
1886
1887     public GroupInfo getGroup(byte[] groupId) {
1888         return account.getGroupStore().getGroup(groupId);
1889     }
1890
1891     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1892         return account.getSignalProtocolStore().getIdentities();
1893     }
1894
1895     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1896         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1897     }
1898
1899     /**
1900      * Trust this the identity with this fingerprint
1901      *
1902      * @param name        username of the identity
1903      * @param fingerprint Fingerprint
1904      */
1905     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1906         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1907         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1908         if (ids == null) {
1909             return false;
1910         }
1911         for (JsonIdentityKeyStore.Identity id : ids) {
1912             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1913                 continue;
1914             }
1915
1916             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1917             try {
1918                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1919             } catch (IOException | UntrustedIdentityException e) {
1920                 e.printStackTrace();
1921             }
1922             account.save();
1923             return true;
1924         }
1925         return false;
1926     }
1927
1928     /**
1929      * Trust this the identity with this safety number
1930      *
1931      * @param name         username of the identity
1932      * @param safetyNumber Safety number
1933      */
1934     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1935         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1936         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1937         if (ids == null) {
1938             return false;
1939         }
1940         for (JsonIdentityKeyStore.Identity id : ids) {
1941             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1942                 continue;
1943             }
1944
1945             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1946             try {
1947                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1948             } catch (IOException | UntrustedIdentityException e) {
1949                 e.printStackTrace();
1950             }
1951             account.save();
1952             return true;
1953         }
1954         return false;
1955     }
1956
1957     /**
1958      * Trust all keys of this identity without verification
1959      *
1960      * @param name username of the identity
1961      */
1962     public boolean trustIdentityAllKeys(String name) {
1963         SignalServiceAddress address = resolveSignalServiceAddress(name);
1964         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1965         if (ids == null) {
1966             return false;
1967         }
1968         for (JsonIdentityKeyStore.Identity id : ids) {
1969             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1970                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1971                 try {
1972                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1973                 } catch (IOException | UntrustedIdentityException e) {
1974                     e.printStackTrace();
1975                 }
1976             }
1977         }
1978         account.save();
1979         return true;
1980     }
1981
1982     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
1983         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), theirAddress, theirIdentityKey);
1984     }
1985
1986     void saveAccount() {
1987         account.save();
1988     }
1989
1990     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
1991         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
1992         return resolveSignalServiceAddress(canonicalizedNumber);
1993     }
1994
1995     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
1996         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
1997
1998         return resolveSignalServiceAddress(address);
1999     }
2000
2001     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2002         if (address.matches(account.getSelfAddress())) {
2003             return account.getSelfAddress();
2004         }
2005
2006         return account.getRecipientStore().resolveServiceAddress(address);
2007     }
2008
2009     @Override
2010     public void close() throws IOException {
2011         if (messagePipe != null) {
2012             messagePipe.shutdown();
2013             messagePipe = null;
2014         }
2015
2016         if (unidentifiedMessagePipe != null) {
2017             unidentifiedMessagePipe.shutdown();
2018             unidentifiedMessagePipe = null;
2019         }
2020
2021         account.close();
2022     }
2023
2024     public interface ReceiveMessageHandler {
2025
2026         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2027     }
2028 }