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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.Signal;
  22 import org.asamk.signal.AttachmentInvalidException;
  23 import org.asamk.signal.GroupNotFoundException;
  24 import org.asamk.signal.NotAGroupMemberException;
  25 import org.asamk.signal.StickerPackInvalidException;
  26 import org.asamk.signal.TrustLevel;
  27 import org.asamk.signal.storage.SignalAccount;
  28 import org.asamk.signal.storage.contacts.ContactInfo;
  29 import org.asamk.signal.storage.groups.GroupInfo;
  30 import org.asamk.signal.storage.groups.JsonGroupStore;
  31 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  32 import org.asamk.signal.util.IOUtils;
  33 import org.asamk.signal.util.Util;
  34 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  35 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  36 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  37 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  38 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  39 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  40 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  41 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  42 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  43 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  44 import org.signal.libsignal.metadata.SelfSendException;
  45 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  46 import org.signal.zkgroup.InvalidInputException;
  47 import org.signal.zkgroup.VerificationFailedException;
  48 import org.signal.zkgroup.profiles.ClientZkProfileOperations;
  49 import org.signal.zkgroup.profiles.ProfileKey;
  50 import org.whispersystems.libsignal.IdentityKey;
  51 import org.whispersystems.libsignal.IdentityKeyPair;
  52 import org.whispersystems.libsignal.InvalidKeyException;
  53 import org.whispersystems.libsignal.InvalidMessageException;
  54 import org.whispersystems.libsignal.InvalidVersionException;
  55 import org.whispersystems.libsignal.ecc.Curve;
  56 import org.whispersystems.libsignal.ecc.ECKeyPair;
  57 import org.whispersystems.libsignal.ecc.ECPublicKey;
  58 import org.whispersystems.libsignal.state.PreKeyRecord;
  59 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  60 import org.whispersystems.libsignal.util.KeyHelper;
  61 import org.whispersystems.libsignal.util.Medium;
  62 import org.whispersystems.libsignal.util.Pair;
  63 import org.whispersystems.libsignal.util.guava.Optional;
  64 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  65 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  66 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  67 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  68 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  69 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  70 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  71 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  72 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  73 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  74 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentRemoteId;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  79 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  80 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  81 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  82 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  83 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  84 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  85 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  86 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  87 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  88 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  89 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  90 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  91 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  92 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  93 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  94 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  95 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  96 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  97 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  98 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  99 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
 100 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
 101 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 102 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
 103 import org.whispersystems.signalservice.api.push.exceptions.MissingConfigurationException;
 104 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
 105 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 106 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 107 import org.whispersystems.signalservice.api.util.SleepTimer;
 108 import org.whispersystems.signalservice.api.util.StreamDetails;
 109 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 110 import org.whispersystems.signalservice.api.util.UuidUtil;
 111 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration;
 112 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 113 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 114 import org.whispersystems.signalservice.internal.push.VerifyAccountResponse;
 115 import org.whispersystems.signalservice.internal.util.Hex;
 116 import org.whispersystems.util.Base64;
 117
 118 import java.io.File;
 119 import java.io.FileInputStream;
 120 import java.io.FileNotFoundException;
 121 import java.io.FileOutputStream;
 122 import java.io.IOException;
 123 import java.io.InputStream;
 124 import java.io.OutputStream;
 125 import java.net.URI;
 126 import java.net.URISyntaxException;
 127 import java.net.URLEncoder;
 128 import java.nio.file.Files;
 129 import java.nio.file.Paths;
 130 import java.nio.file.StandardCopyOption;
 131 import java.util.ArrayList;
 132 import java.util.Arrays;
 133 import java.util.Collection;
 134 import java.util.Collections;
 135 import java.util.Date;
 136 import java.util.HashSet;
 137 import java.util.LinkedList;
 138 import java.util.List;
 139 import java.util.Locale;
 140 import java.util.Objects;
 141 import java.util.Set;
 142 import java.util.UUID;
 143 import java.util.concurrent.TimeUnit;
 144 import java.util.concurrent.TimeoutException;
 145 import java.util.stream.Collectors;
 146 import java.util.zip.ZipEntry;
 147 import java.util.zip.ZipFile;
 148
 149 public class Manager implements Signal {
 150
 151     private final SleepTimer timer = new UptimeSleepTimer();
 152     private final SignalServiceConfiguration serviceConfiguration;
 153     private final String userAgent;
 154
 155     private final SignalAccount account;
 156     private final PathConfig pathConfig;
 157     private SignalServiceAccountManager accountManager;
 158     private SignalServiceMessagePipe messagePipe = null;
 159     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 160
 161     public Manager(SignalAccount account, PathConfig pathConfig, SignalServiceConfiguration serviceConfiguration, String userAgent) {
 162         this.account = account;
 163         this.pathConfig = pathConfig;
 164         this.serviceConfiguration = serviceConfiguration;
 165         this.userAgent = userAgent;
 166         this.accountManager = createSignalServiceAccountManager();
 167
 168         this.account.setResolver(this::resolveSignalServiceAddress);
 169     }
 170
 171     public String getUsername() {
 172         return account.getUsername();
 173     }
 174
 175     public SignalServiceAddress getSelfAddress() {
 176         return account.getSelfAddress();
 177     }
 178
 179     private SignalServiceAccountManager createSignalServiceAccountManager() {
 180         return new SignalServiceAccountManager(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), userAgent, timer);
 181     }
 182
 183     private IdentityKeyPair getIdentityKeyPair() {
 184         return account.getSignalProtocolStore().getIdentityKeyPair();
 185     }
 186
 187     public int getDeviceId() {
 188         return account.getDeviceId();
 189     }
 190
 191     private String getMessageCachePath() {
 192         return pathConfig.getDataPath() + "/" + account.getUsername() + ".d/msg-cache";
 193     }
 194
 195     private String getMessageCachePath(String sender) {
 196         if (sender == null || sender.isEmpty()) {
 197             return getMessageCachePath();
 198         }
 199
 200         return getMessageCachePath() + "/" + sender.replace("/", "_");
 201     }
 202
 203     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 204         String cachePath = getMessageCachePath(sender);
 205         IOUtils.createPrivateDirectories(cachePath);
 206         return new File(cachePath + "/" + now + "_" + timestamp);
 207     }
 208
 209     public static Manager init(String username, String settingsPath, SignalServiceConfiguration serviceConfiguration, String userAgent) throws IOException {
 210         PathConfig pathConfig = PathConfig.createDefault(settingsPath);
 211
 212         if (!SignalAccount.userExists(pathConfig.getDataPath(), username)) {
 213             IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 214             int registrationId = KeyHelper.generateRegistrationId(false);
 215
 216             ProfileKey profileKey = KeyUtils.createProfileKey();
 217             SignalAccount account = SignalAccount.create(pathConfig.getDataPath(), username, identityKey, registrationId, profileKey);
 218             account.save();
 219
 220             return new Manager(account, pathConfig, serviceConfiguration, userAgent);
 221         }
 222
 223         SignalAccount account = SignalAccount.load(pathConfig.getDataPath(), username);
 224
 225         Manager m = new Manager(account, pathConfig, serviceConfiguration, userAgent);
 226
 227         m.migrateLegacyConfigs();
 228         m.checkAccountState();
 229
 230         return m;
 231     }
 232
 233     private void migrateLegacyConfigs() {
 234         // Copy group avatars that were previously stored in the attachments folder
 235         // to the new avatar folder
 236         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 237             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 238                 File avatarFile = getGroupAvatarFile(g.groupId);
 239                 File attachmentFile = getAttachmentFile(new SignalServiceAttachmentRemoteId(g.getAvatarId()));
 240                 if (!avatarFile.exists() && attachmentFile.exists()) {
 241                     try {
 242                         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 243                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 244                     } catch (Exception e) {
 245                         // Ignore
 246                     }
 247                 }
 248             }
 249             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 250             account.save();
 251         }
 252         if (account.getProfileKey() == null) {
 253             // Old config file, creating new profile key
 254             account.setProfileKey(KeyUtils.createProfileKey());
 255             account.save();
 256         }
 257     }
 258
 259     private void checkAccountState() throws IOException {
 260         if (account.isRegistered()) {
 261             if (accountManager.getPreKeysCount() < ServiceConfig.PREKEY_MINIMUM_COUNT) {
 262                 refreshPreKeys();
 263                 account.save();
 264             }
 265             if (account.getUuid() == null) {
 266                 account.setUuid(accountManager.getOwnUuid());
 267                 account.save();
 268             }
 269         }
 270     }
 271
 272     public boolean isRegistered() {
 273         return account.isRegistered();
 274     }
 275
 276     public void register(boolean voiceVerification) throws IOException {
 277         account.setPassword(KeyUtils.createPassword());
 278
 279         // Resetting UUID, because registering doesn't work otherwise
 280         account.setUuid(null);
 281         accountManager = createSignalServiceAccountManager();
 282
 283         if (voiceVerification) {
 284             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 285         } else {
 286             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 287         }
 288
 289         account.setRegistered(false);
 290         account.save();
 291     }
 292
 293     public void updateAccountAttributes() throws IOException {
 294         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities);
 295     }
 296
 297     public void setProfileName(String name) throws IOException {
 298         accountManager.setProfileName(account.getProfileKey(), name);
 299     }
 300
 301     public void setProfileAvatar(File avatar) throws IOException {
 302         final StreamDetails streamDetails = Utils.createStreamDetailsFromFile(avatar);
 303         accountManager.setProfileAvatar(account.getProfileKey(), streamDetails);
 304         streamDetails.getStream().close();
 305     }
 306
 307     public void removeProfileAvatar() throws IOException {
 308         accountManager.setProfileAvatar(account.getProfileKey(), null);
 309     }
 310
 311     public void unregister() throws IOException {
 312         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 313         // If this is the master device, other users can't send messages to this number anymore.
 314         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 315         accountManager.setGcmId(Optional.absent());
 316
 317         account.setRegistered(false);
 318         account.save();
 319     }
 320
 321     public List<DeviceInfo> getLinkedDevices() throws IOException {
 322         List<DeviceInfo> devices = accountManager.getDevices();
 323         account.setMultiDevice(devices.size() > 1);
 324         account.save();
 325         return devices;
 326     }
 327
 328     public void removeLinkedDevices(int deviceId) throws IOException {
 329         accountManager.removeDevice(deviceId);
 330         List<DeviceInfo> devices = accountManager.getDevices();
 331         account.setMultiDevice(devices.size() > 1);
 332         account.save();
 333     }
 334
 335     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 336         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 337
 338         addDevice(info.deviceIdentifier, info.deviceKey);
 339     }
 340
 341     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 342         IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 343         String verificationCode = accountManager.getNewDeviceVerificationCode();
 344
 345         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 346         account.setMultiDevice(true);
 347         account.save();
 348     }
 349
 350     private List<PreKeyRecord> generatePreKeys() {
 351         List<PreKeyRecord> records = new ArrayList<>(ServiceConfig.PREKEY_BATCH_SIZE);
 352
 353         final int offset = account.getPreKeyIdOffset();
 354         for (int i = 0; i < ServiceConfig.PREKEY_BATCH_SIZE; i++) {
 355             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 356             ECKeyPair keyPair = Curve.generateKeyPair();
 357             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 358
 359             records.add(record);
 360         }
 361
 362         account.addPreKeys(records);
 363         account.save();
 364
 365         return records;
 366     }
 367
 368     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 369         try {
 370             ECKeyPair keyPair = Curve.generateKeyPair();
 371             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 372             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 373
 374             account.addSignedPreKey(record);
 375             account.save();
 376
 377             return record;
 378         } catch (InvalidKeyException e) {
 379             throw new AssertionError(e);
 380         }
 381     }
 382
 383     public void verifyAccount(String verificationCode, String pin) throws IOException {
 384         verificationCode = verificationCode.replace("-", "");
 385         account.setSignalingKey(KeyUtils.createSignalingKey());
 386         // TODO make unrestricted unidentified access configurable
 387         VerifyAccountResponse response = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, ServiceConfig.capabilities);
 388
 389         UUID uuid = UuidUtil.parseOrNull(response.getUuid());
 390         // TODO response.isStorageCapable()
 391         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 392         account.setRegistered(true);
 393         account.setUuid(uuid);
 394         account.setRegistrationLockPin(pin);
 395         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 396
 397         refreshPreKeys();
 398         account.save();
 399     }
 400
 401     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 402         if (pin.isPresent()) {
 403             account.setRegistrationLockPin(pin.get());
 404             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 405         } else {
 406             account.setRegistrationLockPin(null);
 407             accountManager.removeRegistrationLockV1();
 408         }
 409         account.save();
 410     }
 411
 412     void refreshPreKeys() throws IOException {
 413         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 414         final IdentityKeyPair identityKeyPair = getIdentityKeyPair();
 415         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 416
 417         accountManager.setPreKeys(identityKeyPair.getPublicKey(), signedPreKeyRecord, oneTimePreKeys);
 418     }
 419
 420     private SignalServiceMessageReceiver getMessageReceiver() {
 421         // TODO implement ZkGroup support
 422         final ClientZkProfileOperations clientZkProfileOperations = null;
 423         return new SignalServiceMessageReceiver(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), userAgent, null, timer, clientZkProfileOperations);
 424     }
 425
 426     private SignalServiceMessageSender getMessageSender() {
 427         // TODO implement ZkGroup support
 428         final ClientZkProfileOperations clientZkProfileOperations = null;
 429         final boolean attachmentsV3 = false;
 430         return new SignalServiceMessageSender(serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 431                 account.getDeviceId(), account.getSignalProtocolStore(), userAgent, account.isMultiDevice(), attachmentsV3, Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent(), clientZkProfileOperations);
 432     }
 433
 434     private SignalServiceProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 435         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 436                 : messagePipe;
 437
 438         if (pipe != null) {
 439             try {
 440                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 441             } catch (IOException ignored) {
 442             }
 443         }
 444
 445         SignalServiceMessageReceiver receiver = getMessageReceiver();
 446         try {
 447             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 448         } catch (VerificationFailedException e) {
 449             throw new AssertionError(e);
 450         }
 451     }
 452
 453     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 454         File file = getGroupAvatarFile(groupId);
 455         if (!file.exists()) {
 456             return Optional.absent();
 457         }
 458
 459         return Optional.of(Utils.createAttachment(file));
 460     }
 461
 462     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 463         File file = getContactAvatarFile(number);
 464         if (!file.exists()) {
 465             return Optional.absent();
 466         }
 467
 468         return Optional.of(Utils.createAttachment(file));
 469     }
 470
 471     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 472         GroupInfo g = account.getGroupStore().getGroup(groupId);
 473         if (g == null) {
 474             throw new GroupNotFoundException(groupId);
 475         }
 476         if (!g.isMember(account.getSelfAddress())) {
 477             throw new NotAGroupMemberException(groupId, g.name);
 478         }
 479         return g;
 480     }
 481
 482     public List<GroupInfo> getGroups() {
 483         return account.getGroupStore().getGroups();
 484     }
 485
 486     @Override
 487     public long sendGroupMessage(String messageText, List<String> attachments,
 488                                  byte[] groupId)
 489             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 490         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 491         if (attachments != null) {
 492             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 493         }
 494         if (groupId != null) {
 495             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 496                     .withId(groupId)
 497                     .build();
 498             messageBuilder.asGroupMessage(group);
 499         }
 500
 501         final GroupInfo g = getGroupForSending(groupId);
 502
 503         messageBuilder.withExpiration(g.messageExpirationTime);
 504
 505         return sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 506     }
 507
 508     public void sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 509                                          long targetSentTimestamp, byte[] groupId)
 510             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 511         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 512         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 513                 .withReaction(reaction);
 514         if (groupId != null) {
 515             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 516                     .withId(groupId)
 517                     .build();
 518             messageBuilder.asGroupMessage(group);
 519         }
 520         final GroupInfo g = getGroupForSending(groupId);
 521         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 522     }
 523
 524     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 525         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 526                 .withId(groupId)
 527                 .build();
 528
 529         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 530                 .asGroupMessage(group);
 531
 532         final GroupInfo g = getGroupForSending(groupId);
 533         g.removeMember(account.getSelfAddress());
 534         account.getGroupStore().updateGroup(g);
 535
 536         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 537     }
 538
 539     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 540         GroupInfo g;
 541         if (groupId == null) {
 542             // Create new group
 543             g = new GroupInfo(KeyUtils.createGroupId());
 544             g.addMembers(Collections.singleton(account.getSelfAddress()));
 545         } else {
 546             g = getGroupForSending(groupId);
 547         }
 548
 549         if (name != null) {
 550             g.name = name;
 551         }
 552
 553         if (members != null) {
 554             final Set<String> newE164Members = new HashSet<>();
 555             for (SignalServiceAddress member : members) {
 556                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 557                     continue;
 558                 }
 559                 newE164Members.add(member.getNumber().get());
 560             }
 561
 562             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 563             if (contacts.size() != newE164Members.size()) {
 564                 // Some of the new members are not registered on Signal
 565                 for (ContactTokenDetails contact : contacts) {
 566                     newE164Members.remove(contact.getNumber());
 567                 }
 568                 System.err.println("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 569                 System.err.println("Aborting…");
 570                 System.exit(1);
 571             }
 572
 573             g.addMembers(members);
 574         }
 575
 576         if (avatarFile != null) {
 577             IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
 578             File aFile = getGroupAvatarFile(g.groupId);
 579             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 580         }
 581
 582         account.getGroupStore().updateGroup(g);
 583
 584         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 585
 586         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 587         return g.groupId;
 588     }
 589
 590     private void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 591         if (groupId == null) {
 592             return;
 593         }
 594         GroupInfo g = getGroupForSending(groupId);
 595
 596         if (!g.isMember(recipient)) {
 597             return;
 598         }
 599
 600         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 601
 602         // Send group message only to the recipient who requested it
 603         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 604     }
 605
 606     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 607         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 608                 .withId(g.groupId)
 609                 .withName(g.name)
 610                 .withMembers(new ArrayList<>(g.getMembers()));
 611
 612         File aFile = getGroupAvatarFile(g.groupId);
 613         if (aFile.exists()) {
 614             try {
 615                 group.withAvatar(Utils.createAttachment(aFile));
 616             } catch (IOException e) {
 617                 throw new AttachmentInvalidException(aFile.toString(), e);
 618             }
 619         }
 620
 621         return SignalServiceDataMessage.newBuilder()
 622                 .asGroupMessage(group.build())
 623                 .withExpiration(g.messageExpirationTime);
 624     }
 625
 626     private void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 627         if (groupId == null) {
 628             return;
 629         }
 630
 631         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 632                 .withId(groupId);
 633
 634         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 635                 .asGroupMessage(group.build());
 636
 637         // Send group info request message to the recipient who sent us a message with this groupId
 638         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 639     }
 640
 641     private void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 642         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 643                 Collections.singletonList(messageId),
 644                 System.currentTimeMillis());
 645
 646         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 647     }
 648
 649     @Override
 650     public long sendMessage(String message, List<String> attachments, String recipient)
 651             throws EncapsulatedExceptions, AttachmentInvalidException, IOException, InvalidNumberException {
 652         List<String> recipients = new ArrayList<>(1);
 653         recipients.add(recipient);
 654         return sendMessage(message, attachments, recipients);
 655     }
 656
 657     @Override
 658     public long sendMessage(String messageText, List<String> attachments,
 659                             List<String> recipients)
 660             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 661         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 662         if (attachments != null) {
 663             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 664
 665             // Upload attachments here, so we only upload once even for multiple recipients
 666             SignalServiceMessageSender messageSender = getMessageSender();
 667             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 668             for (SignalServiceAttachment attachment : attachmentStreams) {
 669                 if (attachment.isStream()) {
 670                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 671                 } else if (attachment.isPointer()) {
 672                     attachmentPointers.add(attachment.asPointer());
 673                 }
 674             }
 675
 676             messageBuilder.withAttachments(attachmentPointers);
 677         }
 678         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 679     }
 680
 681     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 682                                     long targetSentTimestamp, List<String> recipients)
 683             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 684         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 685         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 686                 .withReaction(reaction);
 687         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 688     }
 689
 690     @Override
 691     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 692         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 693                 .asEndSessionMessage();
 694
 695         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 696         try {
 697             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 698         } catch (Exception e) {
 699             for (SignalServiceAddress address : signalServiceAddresses) {
 700                 handleEndSession(address);
 701             }
 702             throw e;
 703         }
 704     }
 705
 706     @Override
 707     public String getContactName(String number) throws InvalidNumberException {
 708         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 709         if (contact == null) {
 710             return "";
 711         } else {
 712             return contact.name;
 713         }
 714     }
 715
 716     @Override
 717     public void setContactName(String number, String name) throws InvalidNumberException {
 718         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 719         ContactInfo contact = account.getContactStore().getContact(address);
 720         if (contact == null) {
 721             contact = new ContactInfo(address);
 722             System.err.println("Add contact " + contact.number + " named " + name);
 723         } else {
 724             System.err.println("Updating contact " + contact.number + " name " + contact.name + " -> " + name);
 725         }
 726         contact.name = name;
 727         account.getContactStore().updateContact(contact);
 728         account.save();
 729     }
 730
 731     @Override
 732     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 733         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 734     }
 735
 736     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 737         ContactInfo contact = account.getContactStore().getContact(address);
 738         if (contact == null) {
 739             contact = new ContactInfo(address);
 740             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + address.getNumber().orNull());
 741         } else {
 742             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + address.getNumber().orNull());
 743         }
 744         contact.blocked = blocked;
 745         account.getContactStore().updateContact(contact);
 746         account.save();
 747     }
 748
 749     @Override
 750     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 751         GroupInfo group = getGroup(groupId);
 752         if (group == null) {
 753             throw new GroupNotFoundException(groupId);
 754         } else {
 755             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 756             group.blocked = blocked;
 757             account.getGroupStore().updateGroup(group);
 758             account.save();
 759         }
 760     }
 761
 762     @Override
 763     public List<byte[]> getGroupIds() {
 764         List<GroupInfo> groups = getGroups();
 765         List<byte[]> ids = new ArrayList<>(groups.size());
 766         for (GroupInfo group : groups) {
 767             ids.add(group.groupId);
 768         }
 769         return ids;
 770     }
 771
 772     @Override
 773     public String getGroupName(byte[] groupId) {
 774         GroupInfo group = getGroup(groupId);
 775         if (group == null) {
 776             return "";
 777         } else {
 778             return group.name;
 779         }
 780     }
 781
 782     @Override
 783     public List<String> getGroupMembers(byte[] groupId) {
 784         GroupInfo group = getGroup(groupId);
 785         if (group == null) {
 786             return Collections.emptyList();
 787         } else {
 788             return new ArrayList<>(group.getMembersE164());
 789         }
 790     }
 791
 792     @Override
 793     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException {
 794         if (groupId.length == 0) {
 795             groupId = null;
 796         }
 797         if (name.isEmpty()) {
 798             name = null;
 799         }
 800         if (members.size() == 0) {
 801             members = null;
 802         }
 803         if (avatar.isEmpty()) {
 804             avatar = null;
 805         }
 806         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 807     }
 808
 809     /**
 810      * Change the expiration timer for a contact
 811      */
 812     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) {
 813         ContactInfo c = account.getContactStore().getContact(address);
 814         c.messageExpirationTime = messageExpirationTimer;
 815         account.getContactStore().updateContact(c);
 816     }
 817
 818     /**
 819      * Change the expiration timer for a group
 820      */
 821     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 822         GroupInfo g = account.getGroupStore().getGroup(groupId);
 823         g.messageExpirationTime = messageExpirationTimer;
 824         account.getGroupStore().updateGroup(g);
 825     }
 826
 827     /**
 828      * Upload the sticker pack from path.
 829      *
 830      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 831      * @return if successful, returns the URL to install the sticker pack in the signal app
 832      */
 833     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 834         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 835
 836         SignalServiceMessageSender messageSender = getMessageSender();
 837
 838         byte[] packKey = KeyUtils.createStickerUploadKey();
 839         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 840
 841         try {
 842             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 843                     .toString();
 844         } catch (URISyntaxException e) {
 845             throw new AssertionError(e);
 846         }
 847     }
 848
 849     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 850         ZipFile zip = null;
 851         String rootPath = null;
 852
 853         final File file = new File(path);
 854         if (file.getName().endsWith(".zip")) {
 855             zip = new ZipFile(file);
 856         } else if (file.getName().equals("manifest.json")) {
 857             rootPath = file.getParent();
 858         } else {
 859             throw new StickerPackInvalidException("Could not find manifest.json");
 860         }
 861
 862         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 863
 864         if (pack.stickers == null) {
 865             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 866         }
 867
 868         if (pack.stickers.isEmpty()) {
 869             throw new StickerPackInvalidException("Must include stickers.");
 870         }
 871
 872         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 873         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 874             if (sticker.file == null) {
 875                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 876             }
 877
 878             Pair<InputStream, Long> data;
 879             try {
 880                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 881             } catch (IOException ignored) {
 882                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 883             }
 884
 885             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 886             stickers.add(stickerInfo);
 887         }
 888
 889         StickerInfo cover = null;
 890         if (pack.cover != null) {
 891             if (pack.cover.file == null) {
 892                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 893             }
 894
 895             Pair<InputStream, Long> data;
 896             try {
 897                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 898             } catch (IOException ignored) {
 899                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 900             }
 901
 902             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 903         }
 904
 905         return new SignalServiceStickerManifestUpload(
 906                 pack.title,
 907                 pack.author,
 908                 cover,
 909                 stickers);
 910     }
 911
 912     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 913         InputStream inputStream;
 914         if (zip != null) {
 915             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 916         } else {
 917             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 918         }
 919         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 920     }
 921
 922     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 923         if (zip != null) {
 924             final ZipEntry entry = zip.getEntry(subfile);
 925             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 926         } else {
 927             final File file = new File(rootPath, subfile);
 928             return new Pair<>(new FileInputStream(file), file.length());
 929         }
 930     }
 931
 932     void requestSyncGroups() throws IOException {
 933         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 934         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 935         try {
 936             sendSyncMessage(message);
 937         } catch (UntrustedIdentityException e) {
 938             e.printStackTrace();
 939         }
 940     }
 941
 942     void requestSyncContacts() throws IOException {
 943         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 944         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 945         try {
 946             sendSyncMessage(message);
 947         } catch (UntrustedIdentityException e) {
 948             e.printStackTrace();
 949         }
 950     }
 951
 952     void requestSyncBlocked() throws IOException {
 953         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 954         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 955         try {
 956             sendSyncMessage(message);
 957         } catch (UntrustedIdentityException e) {
 958             e.printStackTrace();
 959         }
 960     }
 961
 962     void requestSyncConfiguration() throws IOException {
 963         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 964         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 965         try {
 966             sendSyncMessage(message);
 967         } catch (UntrustedIdentityException e) {
 968             e.printStackTrace();
 969         }
 970     }
 971
 972     private byte[] getSenderCertificate() {
 973         // TODO support UUID capable sender certificates
 974         // byte[] certificate = accountManager.getSenderCertificate();
 975         byte[] certificate;
 976         try {
 977             certificate = accountManager.getSenderCertificateLegacy();
 978         } catch (IOException e) {
 979             System.err.println("Failed to get sender certificate: " + e);
 980             return null;
 981         }
 982         // TODO cache for a day
 983         return certificate;
 984     }
 985
 986     private byte[] getSelfUnidentifiedAccessKey() {
 987         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 988     }
 989
 990     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
 991         ProfileCipher profileCipher = new ProfileCipher(profileKey);
 992         try {
 993             return new SignalProfile(
 994                     encryptedProfile.getIdentityKey(),
 995                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
 996                     encryptedProfile.getAvatar(),
 997                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
 998                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
 999             );
1000         } catch (InvalidCiphertextException e) {
1001             return null;
1002         }
1003     }
1004
1005     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
1006         ContactInfo contact = account.getContactStore().getContact(recipient);
1007         if (contact == null || contact.profileKey == null) {
1008             return null;
1009         }
1010         ProfileKey theirProfileKey;
1011         try {
1012             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
1013         } catch (InvalidInputException | IOException e) {
1014             throw new AssertionError(e);
1015         }
1016         SignalProfile targetProfile;
1017         try {
1018             targetProfile = decryptProfile(getRecipientProfile(recipient, Optional.absent()), theirProfileKey);
1019         } catch (IOException e) {
1020             System.err.println("Failed to get recipient profile: " + e);
1021             return null;
1022         }
1023
1024         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
1025             return null;
1026         }
1027
1028         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
1029             return KeyUtils.createUnrestrictedUnidentifiedAccess();
1030         }
1031
1032         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
1033     }
1034
1035     private Optional<UnidentifiedAccessPair> getAccessForSync() {
1036         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1037         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1038
1039         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1040             return Optional.absent();
1041         }
1042
1043         try {
1044             return Optional.of(new UnidentifiedAccessPair(
1045                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1046                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1047             ));
1048         } catch (InvalidCertificateException e) {
1049             return Optional.absent();
1050         }
1051     }
1052
1053     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1054         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1055         for (SignalServiceAddress recipient : recipients) {
1056             result.add(getAccessFor(recipient));
1057         }
1058         return result;
1059     }
1060
1061     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1062         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1063         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1064         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1065
1066         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1067             return Optional.absent();
1068         }
1069
1070         try {
1071             return Optional.of(new UnidentifiedAccessPair(
1072                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1073                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1074             ));
1075         } catch (InvalidCertificateException e) {
1076             return Optional.absent();
1077         }
1078     }
1079
1080     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1081         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1082
1083         if (unidentifiedAccess.isPresent()) {
1084             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1085         }
1086
1087         return Optional.absent();
1088     }
1089
1090     private void sendSyncMessage(SignalServiceSyncMessage message)
1091             throws IOException, UntrustedIdentityException {
1092         SignalServiceMessageSender messageSender = getMessageSender();
1093         try {
1094             messageSender.sendMessage(message, getAccessForSync());
1095         } catch (UntrustedIdentityException e) {
1096             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1097             throw e;
1098         }
1099     }
1100
1101     /**
1102      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1103      */
1104     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1105             throws EncapsulatedExceptions, IOException {
1106         final long timestamp = System.currentTimeMillis();
1107         messageBuilder.withTimestamp(timestamp);
1108         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1109
1110         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1111         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1112         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1113
1114         for (SendMessageResult result : results) {
1115             if (result.isUnregisteredFailure()) {
1116                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1117             } else if (result.isNetworkFailure()) {
1118                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1119             } else if (result.getIdentityFailure() != null) {
1120                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1121             }
1122         }
1123         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1124             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1125         }
1126         return timestamp;
1127     }
1128
1129     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1130         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1131
1132         for (String number : numbers) {
1133             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1134         }
1135         return signalServiceAddresses;
1136     }
1137
1138     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1139             throws IOException {
1140         if (messagePipe == null) {
1141             messagePipe = getMessageReceiver().createMessagePipe();
1142         }
1143         if (unidentifiedMessagePipe == null) {
1144             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1145         }
1146         SignalServiceDataMessage message = null;
1147         try {
1148             SignalServiceMessageSender messageSender = getMessageSender();
1149
1150             message = messageBuilder.build();
1151             if (message.getGroupContext().isPresent()) {
1152                 try {
1153                     final boolean isRecipientUpdate = false;
1154                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1155                     for (SendMessageResult r : result) {
1156                         if (r.getIdentityFailure() != null) {
1157                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1158                         }
1159                     }
1160                     return result;
1161                 } catch (UntrustedIdentityException e) {
1162                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1163                     return Collections.emptyList();
1164                 }
1165             } else if (recipients.size() == 1 && recipients.contains(account.getSelfAddress())) {
1166                 SignalServiceAddress recipient = account.getSelfAddress();
1167                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1168                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1169                         message.getTimestamp(),
1170                         message,
1171                         message.getExpiresInSeconds(),
1172                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1173                         false);
1174                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1175
1176                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1177                 try {
1178                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
1179                 } catch (UntrustedIdentityException e) {
1180                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1181                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
1182                 }
1183                 return results;
1184             } else {
1185                 // Send to all individually, so sync messages are sent correctly
1186                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1187                 for (SignalServiceAddress address : recipients) {
1188                     ContactInfo contact = account.getContactStore().getContact(address);
1189                     if (contact != null) {
1190                         messageBuilder.withExpiration(contact.messageExpirationTime);
1191                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1192                     } else {
1193                         messageBuilder.withExpiration(0);
1194                         messageBuilder.withProfileKey(null);
1195                     }
1196                     message = messageBuilder.build();
1197                     try {
1198                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
1199                         results.add(result);
1200                     } catch (UntrustedIdentityException e) {
1201                         account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1202                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
1203                     }
1204                 }
1205                 return results;
1206             }
1207         } finally {
1208             if (message != null && message.isEndSession()) {
1209                 for (SignalServiceAddress recipient : recipients) {
1210                     handleEndSession(recipient);
1211                 }
1212             }
1213             account.save();
1214         }
1215     }
1216
1217     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1218         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1219         try {
1220             return cipher.decrypt(envelope);
1221         } catch (ProtocolUntrustedIdentityException e) {
1222             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1223                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1224                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1225                 throw identityException;
1226             }
1227             throw new AssertionError(e);
1228         }
1229     }
1230
1231     private void handleEndSession(SignalServiceAddress source) {
1232         account.getSignalProtocolStore().deleteAllSessions(source);
1233     }
1234
1235     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1236         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1237             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1238             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1239             switch (groupInfo.getType()) {
1240                 case UPDATE:
1241                     if (group == null) {
1242                         group = new GroupInfo(groupInfo.getGroupId());
1243                     }
1244
1245                     if (groupInfo.getAvatar().isPresent()) {
1246                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1247                         if (avatar.isPointer()) {
1248                             try {
1249                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1250                             } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1251                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getRemoteId() + "): " + e.getMessage());
1252                             }
1253                         }
1254                     }
1255
1256                     if (groupInfo.getName().isPresent()) {
1257                         group.name = groupInfo.getName().get();
1258                     }
1259
1260                     if (groupInfo.getMembers().isPresent()) {
1261                         group.addMembers(groupInfo.getMembers().get()
1262                                 .stream()
1263                                 .map(this::resolveSignalServiceAddress)
1264                                 .collect(Collectors.toSet()));
1265                     }
1266
1267                     account.getGroupStore().updateGroup(group);
1268                     break;
1269                 case DELIVER:
1270                     if (group == null) {
1271                         try {
1272                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1273                         } catch (IOException | EncapsulatedExceptions e) {
1274                             e.printStackTrace();
1275                         }
1276                     }
1277                     break;
1278                 case QUIT:
1279                     if (group != null) {
1280                         group.removeMember(source);
1281                         account.getGroupStore().updateGroup(group);
1282                     }
1283                     break;
1284                 case REQUEST_INFO:
1285                     if (group != null) {
1286                         try {
1287                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1288                         } catch (IOException | EncapsulatedExceptions e) {
1289                             e.printStackTrace();
1290                         } catch (NotAGroupMemberException e) {
1291                             // We have left this group, so don't send a group update message
1292                         }
1293                     }
1294                     break;
1295             }
1296         }
1297         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1298         if (message.isEndSession()) {
1299             handleEndSession(conversationPartnerAddress);
1300         }
1301         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1302             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1303                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1304                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1305                 if (group == null) {
1306                     group = new GroupInfo(groupInfo.getGroupId());
1307                 }
1308                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1309                     group.messageExpirationTime = message.getExpiresInSeconds();
1310                     account.getGroupStore().updateGroup(group);
1311                 }
1312             } else {
1313                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1314                 if (contact == null) {
1315                     contact = new ContactInfo(conversationPartnerAddress);
1316                 }
1317                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1318                     contact.messageExpirationTime = message.getExpiresInSeconds();
1319                     account.getContactStore().updateContact(contact);
1320                 }
1321             }
1322         }
1323         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1324             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1325                 if (attachment.isPointer()) {
1326                     try {
1327                         retrieveAttachment(attachment.asPointer());
1328                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1329                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getRemoteId() + "): " + e.getMessage());
1330                     }
1331                 }
1332             }
1333         }
1334         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1335             if (source.matches(account.getSelfAddress())) {
1336                 try {
1337                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1338                 } catch (InvalidInputException ignored) {
1339                 }
1340                 ContactInfo contact = account.getContactStore().getContact(source);
1341                 if (contact != null) {
1342                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1343                     account.getContactStore().updateContact(contact);
1344                 }
1345             } else {
1346                 ContactInfo contact = account.getContactStore().getContact(source);
1347                 if (contact == null) {
1348                     contact = new ContactInfo(source);
1349                 }
1350                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1351                 account.getContactStore().updateContact(contact);
1352             }
1353         }
1354         if (message.getPreviews().isPresent()) {
1355             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1356             for (SignalServiceDataMessage.Preview preview : previews) {
1357                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1358                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1359                     try {
1360                         retrieveAttachment(attachment);
1361                     } catch (IOException | InvalidMessageException | MissingConfigurationException e) {
1362                         System.err.println("Failed to retrieve attachment (" + attachment.getRemoteId() + "): " + e.getMessage());
1363                     }
1364                 }
1365             }
1366         }
1367     }
1368
1369     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1370         final File cachePath = new File(getMessageCachePath());
1371         if (!cachePath.exists()) {
1372             return;
1373         }
1374         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1375             if (!dir.isDirectory()) {
1376                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1377                 continue;
1378             }
1379
1380             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1381                 if (!fileEntry.isFile()) {
1382                     continue;
1383                 }
1384                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1385             }
1386             // Try to delete directory if empty
1387             dir.delete();
1388         }
1389     }
1390
1391     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1392         SignalServiceEnvelope envelope;
1393         try {
1394             envelope = Utils.loadEnvelope(fileEntry);
1395             if (envelope == null) {
1396                 return;
1397             }
1398         } catch (IOException e) {
1399             e.printStackTrace();
1400             return;
1401         }
1402         SignalServiceContent content = null;
1403         if (!envelope.isReceipt()) {
1404             try {
1405                 content = decryptMessage(envelope);
1406             } catch (Exception e) {
1407                 return;
1408             }
1409             handleMessage(envelope, content, ignoreAttachments);
1410         }
1411         account.save();
1412         handler.handleMessage(envelope, content, null);
1413         try {
1414             Files.delete(fileEntry.toPath());
1415         } catch (IOException e) {
1416             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1417         }
1418     }
1419
1420     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1421         retryFailedReceivedMessages(handler, ignoreAttachments);
1422         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1423
1424         try {
1425             if (messagePipe == null) {
1426                 messagePipe = messageReceiver.createMessagePipe();
1427             }
1428
1429             while (true) {
1430                 SignalServiceEnvelope envelope;
1431                 SignalServiceContent content = null;
1432                 Exception exception = null;
1433                 final long now = new Date().getTime();
1434                 try {
1435                     envelope = messagePipe.read(timeout, unit, envelope1 -> {
1436                         // store message on disk, before acknowledging receipt to the server
1437                         try {
1438                             String source = envelope1.getSourceE164().isPresent() ? envelope1.getSourceE164().get() : "";
1439                             File cacheFile = getMessageCacheFile(source, now, envelope1.getTimestamp());
1440                             Utils.storeEnvelope(envelope1, cacheFile);
1441                         } catch (IOException e) {
1442                             System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1443                         }
1444                     });
1445                 } catch (TimeoutException e) {
1446                     if (returnOnTimeout)
1447                         return;
1448                     continue;
1449                 } catch (InvalidVersionException e) {
1450                     System.err.println("Ignoring error: " + e.getMessage());
1451                     continue;
1452                 }
1453                 if (!envelope.isReceipt()) {
1454                     try {
1455                         content = decryptMessage(envelope);
1456                     } catch (Exception e) {
1457                         exception = e;
1458                     }
1459                     handleMessage(envelope, content, ignoreAttachments);
1460                 }
1461                 account.save();
1462                 if (!isMessageBlocked(envelope, content)) {
1463                     handler.handleMessage(envelope, content, exception);
1464                 }
1465                 if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1466                     File cacheFile = null;
1467                     try {
1468                         cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1469                         Files.delete(cacheFile.toPath());
1470                         // Try to delete directory if empty
1471                         new File(getMessageCachePath()).delete();
1472                     } catch (IOException e) {
1473                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1474                     }
1475                 }
1476             }
1477         } finally {
1478             if (messagePipe != null) {
1479                 messagePipe.shutdown();
1480                 messagePipe = null;
1481             }
1482         }
1483     }
1484
1485     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1486         SignalServiceAddress source;
1487         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1488             source = envelope.getSourceAddress();
1489         } else if (content != null) {
1490             source = content.getSender();
1491         } else {
1492             return false;
1493         }
1494         ContactInfo sourceContact = account.getContactStore().getContact(source);
1495         if (sourceContact != null && sourceContact.blocked) {
1496             return true;
1497         }
1498
1499         if (content != null && content.getDataMessage().isPresent()) {
1500             SignalServiceDataMessage message = content.getDataMessage().get();
1501             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1502                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1503                 GroupInfo group = getGroup(groupInfo.getGroupId());
1504                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1505                     return true;
1506                 }
1507             }
1508         }
1509         return false;
1510     }
1511
1512     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1513         if (content != null) {
1514             SignalServiceAddress sender;
1515             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1516                 sender = envelope.getSourceAddress();
1517             } else {
1518                 sender = content.getSender();
1519             }
1520             if (content.getDataMessage().isPresent()) {
1521                 SignalServiceDataMessage message = content.getDataMessage().get();
1522
1523                 if (content.isNeedsReceipt()) {
1524                     try {
1525                         sendReceipt(sender, message.getTimestamp());
1526                     } catch (IOException | UntrustedIdentityException | IllegalArgumentException e) {
1527                         e.printStackTrace();
1528                     }
1529                 }
1530
1531                 handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments);
1532             }
1533             if (content.getSyncMessage().isPresent()) {
1534                 account.setMultiDevice(true);
1535                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1536                 if (syncMessage.getSent().isPresent()) {
1537                     SentTranscriptMessage message = syncMessage.getSent().get();
1538                     handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments);
1539                 }
1540                 if (syncMessage.getRequest().isPresent()) {
1541                     RequestMessage rm = syncMessage.getRequest().get();
1542                     if (rm.isContactsRequest()) {
1543                         try {
1544                             sendContacts();
1545                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1546                             e.printStackTrace();
1547                         }
1548                     }
1549                     if (rm.isGroupsRequest()) {
1550                         try {
1551                             sendGroups();
1552                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1553                             e.printStackTrace();
1554                         }
1555                     }
1556                     if (rm.isBlockedListRequest()) {
1557                         try {
1558                             sendBlockedList();
1559                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1560                             e.printStackTrace();
1561                         }
1562                     }
1563                     // TODO Handle rm.isConfigurationRequest();
1564                 }
1565                 if (syncMessage.getGroups().isPresent()) {
1566                     File tmpFile = null;
1567                     try {
1568                         tmpFile = IOUtils.createTempFile();
1569                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1570                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1571                             DeviceGroup g;
1572                             while ((g = s.read()) != null) {
1573                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1574                                 if (syncGroup == null) {
1575                                     syncGroup = new GroupInfo(g.getId());
1576                                 }
1577                                 if (g.getName().isPresent()) {
1578                                     syncGroup.name = g.getName().get();
1579                                 }
1580                                 syncGroup.addMembers(g.getMembers()
1581                                         .stream()
1582                                         .map(this::resolveSignalServiceAddress)
1583                                         .collect(Collectors.toSet()));
1584                                 if (!g.isActive()) {
1585                                     syncGroup.removeMember(account.getSelfAddress());
1586                                 } else {
1587                                     // Add ourself to the member set as it's marked as active
1588                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1589                                 }
1590                                 syncGroup.blocked = g.isBlocked();
1591                                 if (g.getColor().isPresent()) {
1592                                     syncGroup.color = g.getColor().get();
1593                                 }
1594
1595                                 if (g.getAvatar().isPresent()) {
1596                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1597                                 }
1598                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1599                                 syncGroup.archived = g.isArchived();
1600                                 account.getGroupStore().updateGroup(syncGroup);
1601                             }
1602                         }
1603                     } catch (Exception e) {
1604                         e.printStackTrace();
1605                     } finally {
1606                         if (tmpFile != null) {
1607                             try {
1608                                 Files.delete(tmpFile.toPath());
1609                             } catch (IOException e) {
1610                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1611                             }
1612                         }
1613                     }
1614                 }
1615                 if (syncMessage.getBlockedList().isPresent()) {
1616                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1617                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1618                         setContactBlocked(resolveSignalServiceAddress(address), true);
1619                     }
1620                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1621                         try {
1622                             setGroupBlocked(groupId, true);
1623                         } catch (GroupNotFoundException e) {
1624                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1625                         }
1626                     }
1627                 }
1628                 if (syncMessage.getContacts().isPresent()) {
1629                     File tmpFile = null;
1630                     try {
1631                         tmpFile = IOUtils.createTempFile();
1632                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1633                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1634                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1635                             if (contactsMessage.isComplete()) {
1636                                 account.getContactStore().clear();
1637                             }
1638                             DeviceContact c;
1639                             while ((c = s.read()) != null) {
1640                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1641                                     account.setProfileKey(c.getProfileKey().get());
1642                                 }
1643                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1644                                 ContactInfo contact = account.getContactStore().getContact(address);
1645                                 if (contact == null) {
1646                                     contact = new ContactInfo(address);
1647                                 }
1648                                 if (c.getName().isPresent()) {
1649                                     contact.name = c.getName().get();
1650                                 }
1651                                 if (c.getColor().isPresent()) {
1652                                     contact.color = c.getColor().get();
1653                                 }
1654                                 if (c.getProfileKey().isPresent()) {
1655                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1656                                 }
1657                                 if (c.getVerified().isPresent()) {
1658                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1659                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1660                                 }
1661                                 if (c.getExpirationTimer().isPresent()) {
1662                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1663                                 }
1664                                 contact.blocked = c.isBlocked();
1665                                 contact.inboxPosition = c.getInboxPosition().orNull();
1666                                 contact.archived = c.isArchived();
1667                                 account.getContactStore().updateContact(contact);
1668
1669                                 if (c.getAvatar().isPresent()) {
1670                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1671                                 }
1672                             }
1673                         }
1674                     } catch (Exception e) {
1675                         e.printStackTrace();
1676                     } finally {
1677                         if (tmpFile != null) {
1678                             try {
1679                                 Files.delete(tmpFile.toPath());
1680                             } catch (IOException e) {
1681                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1682                             }
1683                         }
1684                     }
1685                 }
1686                 if (syncMessage.getVerified().isPresent()) {
1687                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1688                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1689                 }
1690                 if (syncMessage.getConfiguration().isPresent()) {
1691                     // TODO
1692                 }
1693             }
1694         }
1695     }
1696
1697     private File getContactAvatarFile(String number) {
1698         return new File(pathConfig.getAvatarsPath(), "contact-" + number);
1699     }
1700
1701     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException, MissingConfigurationException {
1702         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1703         if (attachment.isPointer()) {
1704             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1705             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1706         } else {
1707             SignalServiceAttachmentStream stream = attachment.asStream();
1708             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1709         }
1710     }
1711
1712     private File getGroupAvatarFile(byte[] groupId) {
1713         return new File(pathConfig.getAvatarsPath(), "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1714     }
1715
1716     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException, MissingConfigurationException {
1717         IOUtils.createPrivateDirectories(pathConfig.getAvatarsPath());
1718         if (attachment.isPointer()) {
1719             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1720             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1721         } else {
1722             SignalServiceAttachmentStream stream = attachment.asStream();
1723             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1724         }
1725     }
1726
1727     public File getAttachmentFile(SignalServiceAttachmentRemoteId attachmentId) {
1728         return new File(pathConfig.getAttachmentsPath(), attachmentId.toString());
1729     }
1730
1731     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException, MissingConfigurationException {
1732         IOUtils.createPrivateDirectories(pathConfig.getAttachmentsPath());
1733         return retrieveAttachment(pointer, getAttachmentFile(pointer.getRemoteId()), true);
1734     }
1735
1736     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException, MissingConfigurationException {
1737         if (storePreview && pointer.getPreview().isPresent()) {
1738             File previewFile = new File(outputFile + ".preview");
1739             try (OutputStream output = new FileOutputStream(previewFile)) {
1740                 byte[] preview = pointer.getPreview().get();
1741                 output.write(preview, 0, preview.length);
1742             } catch (FileNotFoundException e) {
1743                 e.printStackTrace();
1744                 return null;
1745             }
1746         }
1747
1748         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1749
1750         File tmpFile = IOUtils.createTempFile();
1751         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE)) {
1752             try (OutputStream output = new FileOutputStream(outputFile)) {
1753                 byte[] buffer = new byte[4096];
1754                 int read;
1755
1756                 while ((read = input.read(buffer)) != -1) {
1757                     output.write(buffer, 0, read);
1758                 }
1759             } catch (FileNotFoundException e) {
1760                 e.printStackTrace();
1761                 return null;
1762             }
1763         } finally {
1764             try {
1765                 Files.delete(tmpFile.toPath());
1766             } catch (IOException e) {
1767                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1768             }
1769         }
1770         return outputFile;
1771     }
1772
1773     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException, MissingConfigurationException {
1774         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1775         return messageReceiver.retrieveAttachment(pointer, tmpFile, ServiceConfig.MAX_ATTACHMENT_SIZE);
1776     }
1777
1778     @Override
1779     public boolean isRemote() {
1780         return false;
1781     }
1782
1783     @Override
1784     public String getObjectPath() {
1785         return null;
1786     }
1787
1788     private void sendGroups() throws IOException, UntrustedIdentityException {
1789         File groupsFile = IOUtils.createTempFile();
1790
1791         try {
1792             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1793                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1794                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1795                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1796                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1797                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1798                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1799                 }
1800             }
1801
1802             if (groupsFile.exists() && groupsFile.length() > 0) {
1803                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1804                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1805                             .withStream(groupsFileStream)
1806                             .withContentType("application/octet-stream")
1807                             .withLength(groupsFile.length())
1808                             .build();
1809
1810                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1811                 }
1812             }
1813         } finally {
1814             try {
1815                 Files.delete(groupsFile.toPath());
1816             } catch (IOException e) {
1817                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1818             }
1819         }
1820     }
1821
1822     public void sendContacts() throws IOException, UntrustedIdentityException {
1823         File contactsFile = IOUtils.createTempFile();
1824
1825         try {
1826             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1827                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1828                 for (ContactInfo record : account.getContactStore().getContacts()) {
1829                     VerifiedMessage verifiedMessage = null;
1830                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1831                     if (currentIdentity != null) {
1832                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1833                     }
1834
1835                     ProfileKey profileKey = null;
1836                     try {
1837                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1838                     } catch (InvalidInputException ignored) {
1839                     }
1840                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1841                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1842                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1843                             Optional.of(record.messageExpirationTime),
1844                             Optional.fromNullable(record.inboxPosition), record.archived));
1845                 }
1846
1847                 if (account.getProfileKey() != null) {
1848                     // Send our own profile key as well
1849                     out.write(new DeviceContact(account.getSelfAddress(),
1850                             Optional.absent(), Optional.absent(),
1851                             Optional.absent(), Optional.absent(),
1852                             Optional.of(account.getProfileKey()),
1853                             false, Optional.absent(), Optional.absent(), false));
1854                 }
1855             }
1856
1857             if (contactsFile.exists() && contactsFile.length() > 0) {
1858                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1859                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1860                             .withStream(contactsFileStream)
1861                             .withContentType("application/octet-stream")
1862                             .withLength(contactsFile.length())
1863                             .build();
1864
1865                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1866                 }
1867             }
1868         } finally {
1869             try {
1870                 Files.delete(contactsFile.toPath());
1871             } catch (IOException e) {
1872                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1873             }
1874         }
1875     }
1876
1877     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1878         List<SignalServiceAddress> addresses = new ArrayList<>();
1879         for (ContactInfo record : account.getContactStore().getContacts()) {
1880             if (record.blocked) {
1881                 addresses.add(record.getAddress());
1882             }
1883         }
1884         List<byte[]> groupIds = new ArrayList<>();
1885         for (GroupInfo record : account.getGroupStore().getGroups()) {
1886             if (record.blocked) {
1887                 groupIds.add(record.groupId);
1888             }
1889         }
1890         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1891     }
1892
1893     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1894         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1895         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1896     }
1897
1898     public List<ContactInfo> getContacts() {
1899         return account.getContactStore().getContacts();
1900     }
1901
1902     public ContactInfo getContact(String number) {
1903         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1904     }
1905
1906     public GroupInfo getGroup(byte[] groupId) {
1907         return account.getGroupStore().getGroup(groupId);
1908     }
1909
1910     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1911         return account.getSignalProtocolStore().getIdentities();
1912     }
1913
1914     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1915         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1916     }
1917
1918     /**
1919      * Trust this the identity with this fingerprint
1920      *
1921      * @param name        username of the identity
1922      * @param fingerprint Fingerprint
1923      */
1924     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1925         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1926         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1927         if (ids == null) {
1928             return false;
1929         }
1930         for (JsonIdentityKeyStore.Identity id : ids) {
1931             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1932                 continue;
1933             }
1934
1935             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1936             try {
1937                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1938             } catch (IOException | UntrustedIdentityException e) {
1939                 e.printStackTrace();
1940             }
1941             account.save();
1942             return true;
1943         }
1944         return false;
1945     }
1946
1947     /**
1948      * Trust this the identity with this safety number
1949      *
1950      * @param name         username of the identity
1951      * @param safetyNumber Safety number
1952      */
1953     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1954         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1955         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1956         if (ids == null) {
1957             return false;
1958         }
1959         for (JsonIdentityKeyStore.Identity id : ids) {
1960             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1961                 continue;
1962             }
1963
1964             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1965             try {
1966                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1967             } catch (IOException | UntrustedIdentityException e) {
1968                 e.printStackTrace();
1969             }
1970             account.save();
1971             return true;
1972         }
1973         return false;
1974     }
1975
1976     /**
1977      * Trust all keys of this identity without verification
1978      *
1979      * @param name username of the identity
1980      */
1981     public boolean trustIdentityAllKeys(String name) {
1982         SignalServiceAddress address = resolveSignalServiceAddress(name);
1983         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1984         if (ids == null) {
1985             return false;
1986         }
1987         for (JsonIdentityKeyStore.Identity id : ids) {
1988             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1989                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1990                 try {
1991                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1992                 } catch (IOException | UntrustedIdentityException e) {
1993                     e.printStackTrace();
1994                 }
1995             }
1996         }
1997         account.save();
1998         return true;
1999     }
2000
2001     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
2002         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentityKeyPair().getPublicKey(), theirAddress, theirIdentityKey);
2003     }
2004
2005     void saveAccount() {
2006         account.save();
2007     }
2008
2009     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2010         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
2011         return resolveSignalServiceAddress(canonicalizedNumber);
2012     }
2013
2014     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2015         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2016
2017         return resolveSignalServiceAddress(address);
2018     }
2019
2020     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2021         if (address.matches(account.getSelfAddress())) {
2022             return account.getSelfAddress();
2023         }
2024
2025         return account.getRecipientStore().resolveServiceAddress(address);
2026     }
2027
2028     public interface ReceiveMessageHandler {
2029
2030         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2031     }
2032 }