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.DbusConfig;
  24 import org.asamk.signal.GroupNotFoundException;
  25 import org.asamk.signal.NotAGroupMemberException;
  26 import org.asamk.signal.StickerPackInvalidException;
  27 import org.asamk.signal.TrustLevel;
  28 import org.asamk.signal.UserAlreadyExists;
  29 import org.asamk.signal.storage.SignalAccount;
  30 import org.asamk.signal.storage.contacts.ContactInfo;
  31 import org.asamk.signal.storage.groups.GroupInfo;
  32 import org.asamk.signal.storage.groups.JsonGroupStore;
  33 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  34 import org.asamk.signal.util.IOUtils;
  35 import org.asamk.signal.util.Util;
  36 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  37 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  38 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  39 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  40 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  41 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  42 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  43 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  44 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  45 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  46 import org.signal.libsignal.metadata.SelfSendException;
  47 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  48 import org.signal.zkgroup.InvalidInputException;
  49 import org.signal.zkgroup.VerificationFailedException;
  50 import org.signal.zkgroup.profiles.ProfileKey;
  51 import org.whispersystems.libsignal.IdentityKey;
  52 import org.whispersystems.libsignal.IdentityKeyPair;
  53 import org.whispersystems.libsignal.InvalidKeyException;
  54 import org.whispersystems.libsignal.InvalidMessageException;
  55 import org.whispersystems.libsignal.InvalidVersionException;
  56 import org.whispersystems.libsignal.ecc.Curve;
  57 import org.whispersystems.libsignal.ecc.ECKeyPair;
  58 import org.whispersystems.libsignal.ecc.ECPublicKey;
  59 import org.whispersystems.libsignal.state.PreKeyRecord;
  60 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  61 import org.whispersystems.libsignal.util.KeyHelper;
  62 import org.whispersystems.libsignal.util.Medium;
  63 import org.whispersystems.libsignal.util.Pair;
  64 import org.whispersystems.libsignal.util.guava.Optional;
  65 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  66 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  67 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  68 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  69 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  70 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  71 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  72 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  73 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  74 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  75 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  78 import org.whispersystems.signalservice.api.messages.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.NetworkFailureException;
 104 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 105 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 106 import org.whispersystems.signalservice.api.util.SleepTimer;
 107 import org.whispersystems.signalservice.api.util.StreamDetails;
 108 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 109 import org.whispersystems.signalservice.api.util.UuidUtil;
 110 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 111 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 112 import org.whispersystems.signalservice.internal.util.Hex;
 113 import org.whispersystems.util.Base64;
 114
 115 import java.io.File;
 116 import java.io.FileInputStream;
 117 import java.io.FileNotFoundException;
 118 import java.io.FileOutputStream;
 119 import java.io.IOException;
 120 import java.io.InputStream;
 121 import java.io.OutputStream;
 122 import java.net.URI;
 123 import java.net.URISyntaxException;
 124 import java.net.URLEncoder;
 125 import java.nio.file.Files;
 126 import java.nio.file.Paths;
 127 import java.nio.file.StandardCopyOption;
 128 import java.util.ArrayList;
 129 import java.util.Arrays;
 130 import java.util.Collection;
 131 import java.util.Collections;
 132 import java.util.Date;
 133 import java.util.HashSet;
 134 import java.util.LinkedList;
 135 import java.util.List;
 136 import java.util.Locale;
 137 import java.util.Objects;
 138 import java.util.Set;
 139 import java.util.UUID;
 140 import java.util.concurrent.TimeUnit;
 141 import java.util.concurrent.TimeoutException;
 142 import java.util.stream.Collectors;
 143 import java.util.zip.ZipEntry;
 144 import java.util.zip.ZipFile;
 145
 146 public class Manager implements Signal {
 147
 148     private final String settingsPath;
 149     private final String dataPath;
 150     private final String attachmentsPath;
 151     private final String avatarsPath;
 152     private final SleepTimer timer = new UptimeSleepTimer();
 153
 154     private SignalAccount account;
 155     private String username;
 156     private SignalServiceAccountManager accountManager;
 157     private SignalServiceMessagePipe messagePipe = null;
 158     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 159
 160     public Manager(String username, String settingsPath) {
 161         this.username = username;
 162         this.settingsPath = settingsPath;
 163         this.dataPath = this.settingsPath + "/data";
 164         this.attachmentsPath = this.settingsPath + "/attachments";
 165         this.avatarsPath = this.settingsPath + "/avatars";
 166
 167     }
 168
 169     public String getUsername() {
 170         return username;
 171     }
 172
 173     public SignalServiceAddress getSelfAddress() {
 174         return account.getSelfAddress();
 175     }
 176
 177     private SignalServiceAccountManager getSignalServiceAccountManager() {
 178         return new SignalServiceAccountManager(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 179     }
 180
 181     private IdentityKey getIdentity() {
 182         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
 183     }
 184
 185     public int getDeviceId() {
 186         return account.getDeviceId();
 187     }
 188
 189     private String getMessageCachePath() {
 190         return this.dataPath + "/" + username + ".d/msg-cache";
 191     }
 192
 193     private String getMessageCachePath(String sender) {
 194         if (sender == null || sender.isEmpty()) {
 195             return getMessageCachePath();
 196         }
 197
 198         return getMessageCachePath() + "/" + sender.replace("/", "_");
 199     }
 200
 201     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 202         String cachePath = getMessageCachePath(sender);
 203         IOUtils.createPrivateDirectories(cachePath);
 204         return new File(cachePath + "/" + now + "_" + timestamp);
 205     }
 206
 207     public boolean userHasKeys() {
 208         return account != null && account.getSignalProtocolStore() != null;
 209     }
 210
 211     public void init() throws IOException {
 212         if (!SignalAccount.userExists(dataPath, username)) {
 213             return;
 214         }
 215         account = SignalAccount.load(dataPath, username);
 216         account.setResolver(this::resolveSignalServiceAddress);
 217
 218         migrateLegacyConfigs();
 219
 220         accountManager = getSignalServiceAccountManager();
 221         if (account.isRegistered()) {
 222             if (accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 223                 refreshPreKeys();
 224                 account.save();
 225             }
 226             if (account.getUuid() == null) {
 227                 account.setUuid(accountManager.getOwnUuid());
 228                 account.save();
 229             }
 230         }
 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(g.getAvatarId());
 240                 if (!avatarFile.exists() && attachmentFile.exists()) {
 241                     try {
 242                         IOUtils.createPrivateDirectories(avatarsPath);
 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 createNewIdentity() throws IOException {
 260         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 261         int registrationId = KeyHelper.generateRegistrationId(false);
 262         if (username == null) {
 263             account = SignalAccount.createTemporaryAccount(identityKey, registrationId);
 264             account.setResolver(this::resolveSignalServiceAddress);
 265         } else {
 266             ProfileKey profileKey = KeyUtils.createProfileKey();
 267             account = SignalAccount.create(dataPath, username, identityKey, registrationId, profileKey);
 268             account.setResolver(this::resolveSignalServiceAddress);
 269             account.save();
 270         }
 271     }
 272
 273     public boolean isRegistered() {
 274         return account != null && account.isRegistered();
 275     }
 276
 277     public void register(boolean voiceVerification) throws IOException {
 278         if (account == null) {
 279             createNewIdentity();
 280         }
 281         account.setPassword(KeyUtils.createPassword());
 282         account.setUuid(null);
 283         accountManager = getSignalServiceAccountManager();
 284
 285         if (voiceVerification) {
 286             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 287         } else {
 288             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 289         }
 290
 291         account.setRegistered(false);
 292         account.save();
 293     }
 294
 295     public void updateAccountAttributes() throws IOException {
 296         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, BaseConfig.capabilities);
 297     }
 298
 299     public void setProfileName(String name) throws IOException {
 300         accountManager.setProfileName(account.getProfileKey(), name);
 301     }
 302
 303     public void setProfileAvatar(File avatar) throws IOException {
 304         final StreamDetails streamDetails = Utils.createStreamDetailsFromFile(avatar);
 305         accountManager.setProfileAvatar(account.getProfileKey(), streamDetails);
 306         streamDetails.getStream().close();
 307     }
 308
 309     public void removeProfileAvatar() throws IOException {
 310         accountManager.setProfileAvatar(account.getProfileKey(), null);
 311     }
 312
 313     public void unregister() throws IOException {
 314         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 315         // If this is the master device, other users can't send messages to this number anymore.
 316         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 317         accountManager.setGcmId(Optional.absent());
 318
 319         account.setRegistered(false);
 320         account.save();
 321     }
 322
 323     public String getDeviceLinkUri() throws TimeoutException, IOException {
 324         if (account == null) {
 325             createNewIdentity();
 326         }
 327         account.setPassword(KeyUtils.createPassword());
 328         accountManager = getSignalServiceAccountManager();
 329         String uuid = accountManager.getNewDeviceUuid();
 330
 331         return Utils.createDeviceLinkUri(new Utils.DeviceLinkInfo(uuid, getIdentity().getPublicKey()));
 332     }
 333
 334     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 335         account.setSignalingKey(KeyUtils.createSignalingKey());
 336         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 337
 338         username = ret.getNumber();
 339         // TODO do this check before actually registering
 340         if (SignalAccount.userExists(dataPath, username)) {
 341             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 342         }
 343
 344         // Create new account with the synced identity
 345         byte[] profileKeyBytes = ret.getProfileKey();
 346         ProfileKey profileKey;
 347         if (profileKeyBytes == null) {
 348             profileKey = KeyUtils.createProfileKey();
 349         } else {
 350             try {
 351                 profileKey = new ProfileKey(profileKeyBytes);
 352             } catch (InvalidInputException e) {
 353                 throw new IOException("Received invalid profileKey", e);
 354             }
 355         }
 356         account = SignalAccount.createLinkedAccount(dataPath, username, ret.getUuid(), account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 357         account.setResolver(this::resolveSignalServiceAddress);
 358
 359         refreshPreKeys();
 360
 361         requestSyncGroups();
 362         requestSyncContacts();
 363         requestSyncBlocked();
 364         requestSyncConfiguration();
 365
 366         account.save();
 367     }
 368
 369     public List<DeviceInfo> getLinkedDevices() throws IOException {
 370         List<DeviceInfo> devices = accountManager.getDevices();
 371         account.setMultiDevice(devices.size() > 1);
 372         account.save();
 373         return devices;
 374     }
 375
 376     public void removeLinkedDevices(int deviceId) throws IOException {
 377         accountManager.removeDevice(deviceId);
 378         List<DeviceInfo> devices = accountManager.getDevices();
 379         account.setMultiDevice(devices.size() > 1);
 380         account.save();
 381     }
 382
 383     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 384         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 385
 386         addDevice(info.deviceIdentifier, info.deviceKey);
 387     }
 388
 389     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 390         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 391         String verificationCode = accountManager.getNewDeviceVerificationCode();
 392
 393         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 394         account.setMultiDevice(true);
 395         account.save();
 396     }
 397
 398     private List<PreKeyRecord> generatePreKeys() {
 399         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 400
 401         final int offset = account.getPreKeyIdOffset();
 402         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 403             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 404             ECKeyPair keyPair = Curve.generateKeyPair();
 405             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 406
 407             records.add(record);
 408         }
 409
 410         account.addPreKeys(records);
 411         account.save();
 412
 413         return records;
 414     }
 415
 416     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 417         try {
 418             ECKeyPair keyPair = Curve.generateKeyPair();
 419             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 420             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 421
 422             account.addSignedPreKey(record);
 423             account.save();
 424
 425             return record;
 426         } catch (InvalidKeyException e) {
 427             throw new AssertionError(e);
 428         }
 429     }
 430
 431     public void verifyAccount(String verificationCode, String pin) throws IOException {
 432         verificationCode = verificationCode.replace("-", "");
 433         account.setSignalingKey(KeyUtils.createSignalingKey());
 434         // TODO make unrestricted unidentified access configurable
 435         UUID uuid = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, BaseConfig.capabilities);
 436
 437         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 438         account.setRegistered(true);
 439         account.setUuid(uuid);
 440         account.setRegistrationLockPin(pin);
 441         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 442
 443         refreshPreKeys();
 444         account.save();
 445     }
 446
 447     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 448         if (pin.isPresent()) {
 449             account.setRegistrationLockPin(pin.get());
 450             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 451         } else {
 452             account.setRegistrationLockPin(null);
 453             accountManager.removeV1Pin();
 454         }
 455         account.save();
 456     }
 457
 458     private void refreshPreKeys() throws IOException {
 459         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 460         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 461         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 462
 463         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 464     }
 465
 466     private SignalServiceMessageReceiver getMessageReceiver() {
 467         return new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
 468     }
 469
 470     private SignalServiceMessageSender getMessageSender() {
 471         return new SignalServiceMessageSender(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 472                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent());
 473     }
 474
 475     private SignalServiceProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 476         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 477                 : messagePipe;
 478
 479         if (pipe != null) {
 480             try {
 481                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 482             } catch (IOException ignored) {
 483             }
 484         }
 485
 486         SignalServiceMessageReceiver receiver = getMessageReceiver();
 487         try {
 488             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 489         } catch (VerificationFailedException e) {
 490             throw new AssertionError(e);
 491         }
 492     }
 493
 494     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 495         File file = getGroupAvatarFile(groupId);
 496         if (!file.exists()) {
 497             return Optional.absent();
 498         }
 499
 500         return Optional.of(Utils.createAttachment(file));
 501     }
 502
 503     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 504         File file = getContactAvatarFile(number);
 505         if (!file.exists()) {
 506             return Optional.absent();
 507         }
 508
 509         return Optional.of(Utils.createAttachment(file));
 510     }
 511
 512     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 513         GroupInfo g = account.getGroupStore().getGroup(groupId);
 514         if (g == null) {
 515             throw new GroupNotFoundException(groupId);
 516         }
 517         if (!g.isMember(account.getSelfAddress())) {
 518             throw new NotAGroupMemberException(groupId, g.name);
 519         }
 520         return g;
 521     }
 522
 523     public List<GroupInfo> getGroups() {
 524         return account.getGroupStore().getGroups();
 525     }
 526
 527     @Override
 528     public long sendGroupMessage(String messageText, List<String> attachments,
 529                                  byte[] groupId)
 530             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 531         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 532         if (attachments != null) {
 533             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 534         }
 535         if (groupId != null) {
 536             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 537                     .withId(groupId)
 538                     .build();
 539             messageBuilder.asGroupMessage(group);
 540         }
 541
 542         final GroupInfo g = getGroupForSending(groupId);
 543
 544         messageBuilder.withExpiration(g.messageExpirationTime);
 545
 546         return sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 547     }
 548
 549     public void sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 550                                          long targetSentTimestamp, byte[] groupId)
 551             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 552         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 553         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 554                 .withReaction(reaction);
 555         if (groupId != null) {
 556             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 557                     .withId(groupId)
 558                     .build();
 559             messageBuilder.asGroupMessage(group);
 560         }
 561         final GroupInfo g = getGroupForSending(groupId);
 562         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 563     }
 564
 565     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 566         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 567                 .withId(groupId)
 568                 .build();
 569
 570         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 571                 .asGroupMessage(group);
 572
 573         final GroupInfo g = getGroupForSending(groupId);
 574         g.removeMember(account.getSelfAddress());
 575         account.getGroupStore().updateGroup(g);
 576
 577         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 578     }
 579
 580     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 581         GroupInfo g;
 582         if (groupId == null) {
 583             // Create new group
 584             g = new GroupInfo(KeyUtils.createGroupId());
 585             g.addMembers(Collections.singleton(account.getSelfAddress()));
 586         } else {
 587             g = getGroupForSending(groupId);
 588         }
 589
 590         if (name != null) {
 591             g.name = name;
 592         }
 593
 594         if (members != null) {
 595             final Set<String> newE164Members = new HashSet<>();
 596             for (SignalServiceAddress member : members) {
 597                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 598                     continue;
 599                 }
 600                 newE164Members.add(member.getNumber().get());
 601             }
 602
 603             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 604             if (contacts.size() != newE164Members.size()) {
 605                 // Some of the new members are not registered on Signal
 606                 for (ContactTokenDetails contact : contacts) {
 607                     newE164Members.remove(contact.getNumber());
 608                 }
 609                 System.err.println("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 610                 System.err.println("Aborting…");
 611                 System.exit(1);
 612             }
 613
 614             g.addMembers(members);
 615         }
 616
 617         if (avatarFile != null) {
 618             IOUtils.createPrivateDirectories(avatarsPath);
 619             File aFile = getGroupAvatarFile(g.groupId);
 620             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 621         }
 622
 623         account.getGroupStore().updateGroup(g);
 624
 625         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 626
 627         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 628         return g.groupId;
 629     }
 630
 631     private void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 632         if (groupId == null) {
 633             return;
 634         }
 635         GroupInfo g = getGroupForSending(groupId);
 636
 637         if (!g.isMember(recipient)) {
 638             return;
 639         }
 640
 641         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 642
 643         // Send group message only to the recipient who requested it
 644         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 645     }
 646
 647     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 648         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 649                 .withId(g.groupId)
 650                 .withName(g.name)
 651                 .withMembers(new ArrayList<>(g.getMembers()));
 652
 653         File aFile = getGroupAvatarFile(g.groupId);
 654         if (aFile.exists()) {
 655             try {
 656                 group.withAvatar(Utils.createAttachment(aFile));
 657             } catch (IOException e) {
 658                 throw new AttachmentInvalidException(aFile.toString(), e);
 659             }
 660         }
 661
 662         return SignalServiceDataMessage.newBuilder()
 663                 .asGroupMessage(group.build())
 664                 .withExpiration(g.messageExpirationTime);
 665     }
 666
 667     private void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 668         if (groupId == null) {
 669             return;
 670         }
 671
 672         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 673                 .withId(groupId);
 674
 675         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 676                 .asGroupMessage(group.build());
 677
 678         // Send group info request message to the recipient who sent us a message with this groupId
 679         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 680     }
 681
 682     private void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 683         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 684                 Collections.singletonList(messageId),
 685                 System.currentTimeMillis());
 686
 687         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 688     }
 689
 690     @Override
 691     public long sendMessage(String message, List<String> attachments, String recipient)
 692             throws EncapsulatedExceptions, AttachmentInvalidException, IOException, InvalidNumberException {
 693         List<String> recipients = new ArrayList<>(1);
 694         recipients.add(recipient);
 695         return sendMessage(message, attachments, recipients);
 696     }
 697
 698     @Override
 699     public long sendMessage(String messageText, List<String> attachments,
 700                             List<String> recipients)
 701             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 702         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 703         if (attachments != null) {
 704             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 705
 706             // Upload attachments here, so we only upload once even for multiple recipients
 707             SignalServiceMessageSender messageSender = getMessageSender();
 708             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 709             for (SignalServiceAttachment attachment : attachmentStreams) {
 710                 if (attachment.isStream()) {
 711                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 712                 } else if (attachment.isPointer()) {
 713                     attachmentPointers.add(attachment.asPointer());
 714                 }
 715             }
 716
 717             messageBuilder.withAttachments(attachmentPointers);
 718         }
 719         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 720     }
 721
 722     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 723                                     long targetSentTimestamp, List<String> recipients)
 724             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 725         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 726         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 727                 .withReaction(reaction);
 728         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 729     }
 730
 731     @Override
 732     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 733         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 734                 .asEndSessionMessage();
 735
 736         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 737         try {
 738             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 739         } catch (Exception e) {
 740             for (SignalServiceAddress address : signalServiceAddresses) {
 741                 handleEndSession(address);
 742             }
 743             throw e;
 744         }
 745     }
 746
 747     @Override
 748     public String getContactName(String number) throws InvalidNumberException {
 749         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 750         if (contact == null) {
 751             return "";
 752         } else {
 753             return contact.name;
 754         }
 755     }
 756
 757     @Override
 758     public void setContactName(String number, String name) throws InvalidNumberException {
 759         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 760         ContactInfo contact = account.getContactStore().getContact(address);
 761         if (contact == null) {
 762             contact = new ContactInfo(address);
 763             System.err.println("Add contact " + contact.number + " named " + name);
 764         } else {
 765             System.err.println("Updating contact " + contact.number + " name " + contact.name + " -> " + name);
 766         }
 767         contact.name = name;
 768         account.getContactStore().updateContact(contact);
 769         account.save();
 770     }
 771
 772     @Override
 773     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 774         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 775     }
 776
 777     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 778         ContactInfo contact = account.getContactStore().getContact(address);
 779         if (contact == null) {
 780             contact = new ContactInfo(address);
 781             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + address.getNumber().orNull());
 782         } else {
 783             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + address.getNumber().orNull());
 784         }
 785         contact.blocked = blocked;
 786         account.getContactStore().updateContact(contact);
 787         account.save();
 788     }
 789
 790     @Override
 791     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 792         GroupInfo group = getGroup(groupId);
 793         if (group == null) {
 794             throw new GroupNotFoundException(groupId);
 795         } else {
 796             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 797             group.blocked = blocked;
 798             account.getGroupStore().updateGroup(group);
 799             account.save();
 800         }
 801     }
 802
 803     @Override
 804     public List<byte[]> getGroupIds() {
 805         List<GroupInfo> groups = getGroups();
 806         List<byte[]> ids = new ArrayList<>(groups.size());
 807         for (GroupInfo group : groups) {
 808             ids.add(group.groupId);
 809         }
 810         return ids;
 811     }
 812
 813     @Override
 814     public String getGroupName(byte[] groupId) {
 815         GroupInfo group = getGroup(groupId);
 816         if (group == null) {
 817             return "";
 818         } else {
 819             return group.name;
 820         }
 821     }
 822
 823     @Override
 824     public List<String> getGroupMembers(byte[] groupId) {
 825         GroupInfo group = getGroup(groupId);
 826         if (group == null) {
 827             return Collections.emptyList();
 828         } else {
 829             return new ArrayList<>(group.getMembersE164());
 830         }
 831     }
 832
 833     @Override
 834     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException {
 835         if (groupId.length == 0) {
 836             groupId = null;
 837         }
 838         if (name.isEmpty()) {
 839             name = null;
 840         }
 841         if (members.size() == 0) {
 842             members = null;
 843         }
 844         if (avatar.isEmpty()) {
 845             avatar = null;
 846         }
 847         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 848     }
 849
 850     /**
 851      * Change the expiration timer for a contact
 852      */
 853     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) {
 854         ContactInfo c = account.getContactStore().getContact(address);
 855         c.messageExpirationTime = messageExpirationTimer;
 856         account.getContactStore().updateContact(c);
 857     }
 858
 859     /**
 860      * Change the expiration timer for a group
 861      */
 862     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 863         GroupInfo g = account.getGroupStore().getGroup(groupId);
 864         g.messageExpirationTime = messageExpirationTimer;
 865         account.getGroupStore().updateGroup(g);
 866     }
 867
 868     /**
 869      * Upload the sticker pack from path.
 870      *
 871      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 872      * @return if successful, returns the URL to install the sticker pack in the signal app
 873      */
 874     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 875         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 876
 877         SignalServiceMessageSender messageSender = getMessageSender();
 878
 879         byte[] packKey = KeyUtils.createStickerUploadKey();
 880         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 881
 882         try {
 883             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 884                     .toString();
 885         } catch (URISyntaxException e) {
 886             throw new AssertionError(e);
 887         }
 888     }
 889
 890     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 891         ZipFile zip = null;
 892         String rootPath = null;
 893
 894         final File file = new File(path);
 895         if (file.getName().endsWith(".zip")) {
 896             zip = new ZipFile(file);
 897         } else if (file.getName().equals("manifest.json")) {
 898             rootPath = file.getParent();
 899         } else {
 900             throw new StickerPackInvalidException("Could not find manifest.json");
 901         }
 902
 903         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 904
 905         if (pack.stickers == null) {
 906             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 907         }
 908
 909         if (pack.stickers.isEmpty()) {
 910             throw new StickerPackInvalidException("Must include stickers.");
 911         }
 912
 913         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 914         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 915             if (sticker.file == null) {
 916                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 917             }
 918
 919             Pair<InputStream, Long> data;
 920             try {
 921                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 922             } catch (IOException ignored) {
 923                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 924             }
 925
 926             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 927             stickers.add(stickerInfo);
 928         }
 929
 930         StickerInfo cover = null;
 931         if (pack.cover != null) {
 932             if (pack.cover.file == null) {
 933                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 934             }
 935
 936             Pair<InputStream, Long> data;
 937             try {
 938                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 939             } catch (IOException ignored) {
 940                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 941             }
 942
 943             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 944         }
 945
 946         return new SignalServiceStickerManifestUpload(
 947                 pack.title,
 948                 pack.author,
 949                 cover,
 950                 stickers);
 951     }
 952
 953     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 954         InputStream inputStream;
 955         if (zip != null) {
 956             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 957         } else {
 958             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 959         }
 960         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 961     }
 962
 963     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 964         if (zip != null) {
 965             final ZipEntry entry = zip.getEntry(subfile);
 966             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 967         } else {
 968             final File file = new File(rootPath, subfile);
 969             return new Pair<>(new FileInputStream(file), file.length());
 970         }
 971     }
 972
 973     private void requestSyncGroups() throws IOException {
 974         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 975         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 976         try {
 977             sendSyncMessage(message);
 978         } catch (UntrustedIdentityException e) {
 979             e.printStackTrace();
 980         }
 981     }
 982
 983     private void requestSyncContacts() throws IOException {
 984         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 985         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 986         try {
 987             sendSyncMessage(message);
 988         } catch (UntrustedIdentityException e) {
 989             e.printStackTrace();
 990         }
 991     }
 992
 993     private void requestSyncBlocked() throws IOException {
 994         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 995         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 996         try {
 997             sendSyncMessage(message);
 998         } catch (UntrustedIdentityException e) {
 999             e.printStackTrace();
1000         }
1001     }
1002
1003     private void requestSyncConfiguration() throws IOException {
1004         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
1005         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1006         try {
1007             sendSyncMessage(message);
1008         } catch (UntrustedIdentityException e) {
1009             e.printStackTrace();
1010         }
1011     }
1012
1013     private byte[] getSenderCertificate() {
1014         // TODO support UUID capable sender certificates
1015         // byte[] certificate = accountManager.getSenderCertificate();
1016         byte[] certificate;
1017         try {
1018             certificate = accountManager.getSenderCertificateLegacy();
1019         } catch (IOException e) {
1020             System.err.println("Failed to get sender certificate: " + e);
1021             return null;
1022         }
1023         // TODO cache for a day
1024         return certificate;
1025     }
1026
1027     private byte[] getSelfUnidentifiedAccessKey() {
1028         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
1029     }
1030
1031     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
1032         ProfileCipher profileCipher = new ProfileCipher(profileKey);
1033         try {
1034             return new SignalProfile(
1035                     encryptedProfile.getIdentityKey(),
1036                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
1037                     encryptedProfile.getAvatar(),
1038                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
1039                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
1040             );
1041         } catch (InvalidCiphertextException e) {
1042             return null;
1043         }
1044     }
1045
1046     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
1047         ContactInfo contact = account.getContactStore().getContact(recipient);
1048         if (contact == null || contact.profileKey == null) {
1049             return null;
1050         }
1051         ProfileKey theirProfileKey;
1052         try {
1053             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
1054         } catch (InvalidInputException | IOException e) {
1055             throw new AssertionError(e);
1056         }
1057         SignalProfile targetProfile;
1058         try {
1059             targetProfile = decryptProfile(getRecipientProfile(recipient, Optional.absent()), theirProfileKey);
1060         } catch (IOException e) {
1061             System.err.println("Failed to get recipient profile: " + e);
1062             return null;
1063         }
1064
1065         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
1066             return null;
1067         }
1068
1069         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
1070             return KeyUtils.createUnrestrictedUnidentifiedAccess();
1071         }
1072
1073         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
1074     }
1075
1076     private Optional<UnidentifiedAccessPair> getAccessForSync() {
1077         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1078         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1079
1080         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1081             return Optional.absent();
1082         }
1083
1084         try {
1085             return Optional.of(new UnidentifiedAccessPair(
1086                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1087                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1088             ));
1089         } catch (InvalidCertificateException e) {
1090             return Optional.absent();
1091         }
1092     }
1093
1094     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1095         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1096         for (SignalServiceAddress recipient : recipients) {
1097             result.add(getAccessFor(recipient));
1098         }
1099         return result;
1100     }
1101
1102     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1103         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1104         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1105         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1106
1107         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1108             return Optional.absent();
1109         }
1110
1111         try {
1112             return Optional.of(new UnidentifiedAccessPair(
1113                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1114                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1115             ));
1116         } catch (InvalidCertificateException e) {
1117             return Optional.absent();
1118         }
1119     }
1120
1121     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1122         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1123
1124         if (unidentifiedAccess.isPresent()) {
1125             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1126         }
1127
1128         return Optional.absent();
1129     }
1130
1131     private void sendSyncMessage(SignalServiceSyncMessage message)
1132             throws IOException, UntrustedIdentityException {
1133         SignalServiceMessageSender messageSender = getMessageSender();
1134         try {
1135             messageSender.sendMessage(message, getAccessForSync());
1136         } catch (UntrustedIdentityException e) {
1137             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1138             throw e;
1139         }
1140     }
1141
1142     /**
1143      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1144      */
1145     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1146             throws EncapsulatedExceptions, IOException {
1147         final long timestamp = System.currentTimeMillis();
1148         messageBuilder.withTimestamp(timestamp);
1149         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1150
1151         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1152         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1153         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1154
1155         for (SendMessageResult result : results) {
1156             if (result.isUnregisteredFailure()) {
1157                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1158             } else if (result.isNetworkFailure()) {
1159                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1160             } else if (result.getIdentityFailure() != null) {
1161                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1162             }
1163         }
1164         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1165             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1166         }
1167         return timestamp;
1168     }
1169
1170     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1171         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1172
1173         for (String number : numbers) {
1174             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1175         }
1176         return signalServiceAddresses;
1177     }
1178
1179     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1180             throws IOException {
1181         if (messagePipe == null) {
1182             messagePipe = getMessageReceiver().createMessagePipe();
1183         }
1184         if (unidentifiedMessagePipe == null) {
1185             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1186         }
1187         SignalServiceDataMessage message = null;
1188         try {
1189             SignalServiceMessageSender messageSender = getMessageSender();
1190
1191             message = messageBuilder.build();
1192             if (message.getGroupContext().isPresent()) {
1193                 try {
1194                     final boolean isRecipientUpdate = false;
1195                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1196                     for (SendMessageResult r : result) {
1197                         if (r.getIdentityFailure() != null) {
1198                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1199                         }
1200                     }
1201                     return result;
1202                 } catch (UntrustedIdentityException e) {
1203                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1204                     return Collections.emptyList();
1205                 }
1206             } else if (recipients.size() == 1 && recipients.contains(account.getSelfAddress())) {
1207                 SignalServiceAddress recipient = account.getSelfAddress();
1208                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1209                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1210                         message.getTimestamp(),
1211                         message,
1212                         message.getExpiresInSeconds(),
1213                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1214                         false);
1215                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1216
1217                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1218                 try {
1219                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
1220                 } catch (UntrustedIdentityException e) {
1221                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1222                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
1223                 }
1224                 return results;
1225             } else {
1226                 // Send to all individually, so sync messages are sent correctly
1227                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1228                 for (SignalServiceAddress address : recipients) {
1229                     ContactInfo contact = account.getContactStore().getContact(address);
1230                     if (contact != null) {
1231                         messageBuilder.withExpiration(contact.messageExpirationTime);
1232                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1233                     } else {
1234                         messageBuilder.withExpiration(0);
1235                         messageBuilder.withProfileKey(null);
1236                     }
1237                     message = messageBuilder.build();
1238                     try {
1239                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
1240                         results.add(result);
1241                     } catch (UntrustedIdentityException e) {
1242                         account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1243                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
1244                     }
1245                 }
1246                 return results;
1247             }
1248         } finally {
1249             if (message != null && message.isEndSession()) {
1250                 for (SignalServiceAddress recipient : recipients) {
1251                     handleEndSession(recipient);
1252                 }
1253             }
1254             account.save();
1255         }
1256     }
1257
1258     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1259         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1260         try {
1261             return cipher.decrypt(envelope);
1262         } catch (ProtocolUntrustedIdentityException e) {
1263             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1264                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1265                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1266                 throw identityException;
1267             }
1268             throw new AssertionError(e);
1269         }
1270     }
1271
1272     private void handleEndSession(SignalServiceAddress source) {
1273         account.getSignalProtocolStore().deleteAllSessions(source);
1274     }
1275
1276     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1277         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1278             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1279             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1280             switch (groupInfo.getType()) {
1281                 case UPDATE:
1282                     if (group == null) {
1283                         group = new GroupInfo(groupInfo.getGroupId());
1284                     }
1285
1286                     if (groupInfo.getAvatar().isPresent()) {
1287                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1288                         if (avatar.isPointer()) {
1289                             try {
1290                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1291                             } catch (IOException | InvalidMessageException e) {
1292                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
1293                             }
1294                         }
1295                     }
1296
1297                     if (groupInfo.getName().isPresent()) {
1298                         group.name = groupInfo.getName().get();
1299                     }
1300
1301                     if (groupInfo.getMembers().isPresent()) {
1302                         group.addMembers(groupInfo.getMembers().get()
1303                                 .stream()
1304                                 .map(this::resolveSignalServiceAddress)
1305                                 .collect(Collectors.toSet()));
1306                     }
1307
1308                     account.getGroupStore().updateGroup(group);
1309                     break;
1310                 case DELIVER:
1311                     if (group == null) {
1312                         try {
1313                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1314                         } catch (IOException | EncapsulatedExceptions e) {
1315                             e.printStackTrace();
1316                         }
1317                     }
1318                     break;
1319                 case QUIT:
1320                     if (group == null) {
1321                         try {
1322                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1323                         } catch (IOException | EncapsulatedExceptions e) {
1324                             e.printStackTrace();
1325                         }
1326                     } else {
1327                         group.removeMember(source);
1328                         account.getGroupStore().updateGroup(group);
1329                     }
1330                     break;
1331                 case REQUEST_INFO:
1332                     if (group != null) {
1333                         try {
1334                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1335                         } catch (IOException | EncapsulatedExceptions e) {
1336                             e.printStackTrace();
1337                         } catch (NotAGroupMemberException e) {
1338                             // We have left this group, so don't send a group update message
1339                         }
1340                     }
1341                     break;
1342             }
1343         }
1344         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1345         if (message.isEndSession()) {
1346             handleEndSession(conversationPartnerAddress);
1347         }
1348         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1349             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1350                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1351                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1352                 if (group == null) {
1353                     group = new GroupInfo(groupInfo.getGroupId());
1354                 }
1355                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1356                     group.messageExpirationTime = message.getExpiresInSeconds();
1357                     account.getGroupStore().updateGroup(group);
1358                 }
1359             } else {
1360                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1361                 if (contact == null) {
1362                     contact = new ContactInfo(conversationPartnerAddress);
1363                 }
1364                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1365                     contact.messageExpirationTime = message.getExpiresInSeconds();
1366                     account.getContactStore().updateContact(contact);
1367                 }
1368             }
1369         }
1370         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1371             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1372                 if (attachment.isPointer()) {
1373                     try {
1374                         retrieveAttachment(attachment.asPointer());
1375                     } catch (IOException | InvalidMessageException e) {
1376                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
1377                     }
1378                 }
1379             }
1380         }
1381         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1382             if (source.matches(account.getSelfAddress())) {
1383                 try {
1384                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1385                 } catch (InvalidInputException ignored) {
1386                 }
1387                 ContactInfo contact = account.getContactStore().getContact(source);
1388                 if (contact != null) {
1389                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1390                     account.getContactStore().updateContact(contact);
1391                 }
1392             } else {
1393                 ContactInfo contact = account.getContactStore().getContact(source);
1394                 if (contact == null) {
1395                     contact = new ContactInfo(source);
1396                 }
1397                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1398                 account.getContactStore().updateContact(contact);
1399             }
1400         }
1401         if (message.getPreviews().isPresent()) {
1402             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1403             for (SignalServiceDataMessage.Preview preview : previews) {
1404                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1405                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1406                     try {
1407                         retrieveAttachment(attachment);
1408                     } catch (IOException | InvalidMessageException e) {
1409                         System.err.println("Failed to retrieve attachment (" + attachment.getId() + "): " + e.getMessage());
1410                     }
1411                 }
1412             }
1413         }
1414     }
1415
1416     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1417         final File cachePath = new File(getMessageCachePath());
1418         if (!cachePath.exists()) {
1419             return;
1420         }
1421         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1422             if (!dir.isDirectory()) {
1423                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1424                 continue;
1425             }
1426
1427             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1428                 if (!fileEntry.isFile()) {
1429                     continue;
1430                 }
1431                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1432             }
1433             // Try to delete directory if empty
1434             dir.delete();
1435         }
1436     }
1437
1438     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1439         SignalServiceEnvelope envelope;
1440         try {
1441             envelope = Utils.loadEnvelope(fileEntry);
1442             if (envelope == null) {
1443                 return;
1444             }
1445         } catch (IOException e) {
1446             e.printStackTrace();
1447             return;
1448         }
1449         SignalServiceContent content = null;
1450         if (!envelope.isReceipt()) {
1451             try {
1452                 content = decryptMessage(envelope);
1453             } catch (Exception e) {
1454                 return;
1455             }
1456             handleMessage(envelope, content, ignoreAttachments);
1457         }
1458         account.save();
1459         handler.handleMessage(envelope, content, null);
1460         try {
1461             Files.delete(fileEntry.toPath());
1462         } catch (IOException e) {
1463             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1464         }
1465     }
1466
1467     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1468         retryFailedReceivedMessages(handler, ignoreAttachments);
1469         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1470
1471         try {
1472             if (messagePipe == null) {
1473                 messagePipe = messageReceiver.createMessagePipe();
1474             }
1475
1476             while (true) {
1477                 SignalServiceEnvelope envelope;
1478                 SignalServiceContent content = null;
1479                 Exception exception = null;
1480                 final long now = new Date().getTime();
1481                 try {
1482                     envelope = messagePipe.read(timeout, unit, envelope1 -> {
1483                         // store message on disk, before acknowledging receipt to the server
1484                         try {
1485                             File cacheFile = getMessageCacheFile(envelope1.getSourceE164().get(), now, envelope1.getTimestamp());
1486                             Utils.storeEnvelope(envelope1, cacheFile);
1487                         } catch (IOException e) {
1488                             System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1489                         }
1490                     });
1491                 } catch (TimeoutException e) {
1492                     if (returnOnTimeout)
1493                         return;
1494                     continue;
1495                 } catch (InvalidVersionException e) {
1496                     System.err.println("Ignoring error: " + e.getMessage());
1497                     continue;
1498                 }
1499                 if (!envelope.isReceipt()) {
1500                     try {
1501                         content = decryptMessage(envelope);
1502                     } catch (Exception e) {
1503                         exception = e;
1504                     }
1505                     handleMessage(envelope, content, ignoreAttachments);
1506                 }
1507                 account.save();
1508                 if (!isMessageBlocked(envelope, content)) {
1509                     handler.handleMessage(envelope, content, exception);
1510                 }
1511                 if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1512                     File cacheFile = null;
1513                     try {
1514                         cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1515                         Files.delete(cacheFile.toPath());
1516                         // Try to delete directory if empty
1517                         new File(getMessageCachePath()).delete();
1518                     } catch (IOException e) {
1519                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1520                     }
1521                 }
1522             }
1523         } finally {
1524             if (messagePipe != null) {
1525                 messagePipe.shutdown();
1526                 messagePipe = null;
1527             }
1528         }
1529     }
1530
1531     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1532         SignalServiceAddress source;
1533         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1534             source = envelope.getSourceAddress();
1535         } else if (content != null) {
1536             source = content.getSender();
1537         } else {
1538             return false;
1539         }
1540         ContactInfo sourceContact = account.getContactStore().getContact(source);
1541         if (sourceContact != null && sourceContact.blocked) {
1542             return true;
1543         }
1544
1545         if (content != null && content.getDataMessage().isPresent()) {
1546             SignalServiceDataMessage message = content.getDataMessage().get();
1547             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1548                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1549                 GroupInfo group = getGroup(groupInfo.getGroupId());
1550                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1551                     return true;
1552                 }
1553             }
1554         }
1555         return false;
1556     }
1557
1558     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1559         if (content != null) {
1560             SignalServiceAddress sender;
1561             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1562                 sender = envelope.getSourceAddress();
1563             } else {
1564                 sender = content.getSender();
1565             }
1566             if (content.getDataMessage().isPresent()) {
1567                 SignalServiceDataMessage message = content.getDataMessage().get();
1568
1569                 if (content.isNeedsReceipt()) {
1570                     try {
1571                         sendReceipt(sender, message.getTimestamp());
1572                     } catch (IOException | UntrustedIdentityException | IllegalArgumentException e) {
1573                         e.printStackTrace();
1574                     }
1575                 }
1576
1577                 handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments);
1578             }
1579             if (content.getSyncMessage().isPresent()) {
1580                 account.setMultiDevice(true);
1581                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1582                 if (syncMessage.getSent().isPresent()) {
1583                     SentTranscriptMessage message = syncMessage.getSent().get();
1584                     handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments);
1585                 }
1586                 if (syncMessage.getRequest().isPresent()) {
1587                     RequestMessage rm = syncMessage.getRequest().get();
1588                     if (rm.isContactsRequest()) {
1589                         try {
1590                             sendContacts();
1591                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1592                             e.printStackTrace();
1593                         }
1594                     }
1595                     if (rm.isGroupsRequest()) {
1596                         try {
1597                             sendGroups();
1598                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1599                             e.printStackTrace();
1600                         }
1601                     }
1602                     if (rm.isBlockedListRequest()) {
1603                         try {
1604                             sendBlockedList();
1605                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1606                             e.printStackTrace();
1607                         }
1608                     }
1609                     // TODO Handle rm.isConfigurationRequest();
1610                 }
1611                 if (syncMessage.getGroups().isPresent()) {
1612                     File tmpFile = null;
1613                     try {
1614                         tmpFile = IOUtils.createTempFile();
1615                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1616                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1617                             DeviceGroup g;
1618                             while ((g = s.read()) != null) {
1619                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1620                                 if (syncGroup == null) {
1621                                     syncGroup = new GroupInfo(g.getId());
1622                                 }
1623                                 if (g.getName().isPresent()) {
1624                                     syncGroup.name = g.getName().get();
1625                                 }
1626                                 syncGroup.addMembers(g.getMembers()
1627                                         .stream()
1628                                         .map(this::resolveSignalServiceAddress)
1629                                         .collect(Collectors.toSet()));
1630                                 if (!g.isActive()) {
1631                                     syncGroup.removeMember(account.getSelfAddress());
1632                                 } else {
1633                                     // Add ourself to the member set as it's marked as active
1634                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1635                                 }
1636                                 syncGroup.blocked = g.isBlocked();
1637                                 if (g.getColor().isPresent()) {
1638                                     syncGroup.color = g.getColor().get();
1639                                 }
1640
1641                                 if (g.getAvatar().isPresent()) {
1642                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1643                                 }
1644                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1645                                 syncGroup.archived = g.isArchived();
1646                                 account.getGroupStore().updateGroup(syncGroup);
1647                             }
1648                         }
1649                     } catch (Exception e) {
1650                         e.printStackTrace();
1651                     } finally {
1652                         if (tmpFile != null) {
1653                             try {
1654                                 Files.delete(tmpFile.toPath());
1655                             } catch (IOException e) {
1656                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1657                             }
1658                         }
1659                     }
1660                 }
1661                 if (syncMessage.getBlockedList().isPresent()) {
1662                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1663                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1664                         setContactBlocked(resolveSignalServiceAddress(address), true);
1665                     }
1666                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1667                         try {
1668                             setGroupBlocked(groupId, true);
1669                         } catch (GroupNotFoundException e) {
1670                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1671                         }
1672                     }
1673                 }
1674                 if (syncMessage.getContacts().isPresent()) {
1675                     File tmpFile = null;
1676                     try {
1677                         tmpFile = IOUtils.createTempFile();
1678                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1679                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1680                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1681                             if (contactsMessage.isComplete()) {
1682                                 account.getContactStore().clear();
1683                             }
1684                             DeviceContact c;
1685                             while ((c = s.read()) != null) {
1686                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1687                                     account.setProfileKey(c.getProfileKey().get());
1688                                 }
1689                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1690                                 ContactInfo contact = account.getContactStore().getContact(address);
1691                                 if (contact == null) {
1692                                     contact = new ContactInfo(address);
1693                                 }
1694                                 if (c.getName().isPresent()) {
1695                                     contact.name = c.getName().get();
1696                                 }
1697                                 if (c.getColor().isPresent()) {
1698                                     contact.color = c.getColor().get();
1699                                 }
1700                                 if (c.getProfileKey().isPresent()) {
1701                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1702                                 }
1703                                 if (c.getVerified().isPresent()) {
1704                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1705                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1706                                 }
1707                                 if (c.getExpirationTimer().isPresent()) {
1708                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1709                                 }
1710                                 contact.blocked = c.isBlocked();
1711                                 contact.inboxPosition = c.getInboxPosition().orNull();
1712                                 contact.archived = c.isArchived();
1713                                 account.getContactStore().updateContact(contact);
1714
1715                                 if (c.getAvatar().isPresent()) {
1716                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1717                                 }
1718                             }
1719                         }
1720                     } catch (Exception e) {
1721                         e.printStackTrace();
1722                     } finally {
1723                         if (tmpFile != null) {
1724                             try {
1725                                 Files.delete(tmpFile.toPath());
1726                             } catch (IOException e) {
1727                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1728                             }
1729                         }
1730                     }
1731                 }
1732                 if (syncMessage.getVerified().isPresent()) {
1733                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1734                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1735                 }
1736                 if (syncMessage.getConfiguration().isPresent()) {
1737                     // TODO
1738                 }
1739             }
1740         }
1741     }
1742
1743     private File getContactAvatarFile(String number) {
1744         return new File(avatarsPath, "contact-" + number);
1745     }
1746
1747     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1748         IOUtils.createPrivateDirectories(avatarsPath);
1749         if (attachment.isPointer()) {
1750             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1751             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1752         } else {
1753             SignalServiceAttachmentStream stream = attachment.asStream();
1754             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1755         }
1756     }
1757
1758     private File getGroupAvatarFile(byte[] groupId) {
1759         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1760     }
1761
1762     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1763         IOUtils.createPrivateDirectories(avatarsPath);
1764         if (attachment.isPointer()) {
1765             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1766             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1767         } else {
1768             SignalServiceAttachmentStream stream = attachment.asStream();
1769             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1770         }
1771     }
1772
1773     public File getAttachmentFile(long attachmentId) {
1774         return new File(attachmentsPath, attachmentId + "");
1775     }
1776
1777     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1778         IOUtils.createPrivateDirectories(attachmentsPath);
1779         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1780     }
1781
1782     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1783         if (storePreview && pointer.getPreview().isPresent()) {
1784             File previewFile = new File(outputFile + ".preview");
1785             try (OutputStream output = new FileOutputStream(previewFile)) {
1786                 byte[] preview = pointer.getPreview().get();
1787                 output.write(preview, 0, preview.length);
1788             } catch (FileNotFoundException e) {
1789                 e.printStackTrace();
1790                 return null;
1791             }
1792         }
1793
1794         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1795
1796         File tmpFile = IOUtils.createTempFile();
1797         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1798             try (OutputStream output = new FileOutputStream(outputFile)) {
1799                 byte[] buffer = new byte[4096];
1800                 int read;
1801
1802                 while ((read = input.read(buffer)) != -1) {
1803                     output.write(buffer, 0, read);
1804                 }
1805             } catch (FileNotFoundException e) {
1806                 e.printStackTrace();
1807                 return null;
1808             }
1809         } finally {
1810             try {
1811                 Files.delete(tmpFile.toPath());
1812             } catch (IOException e) {
1813                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1814             }
1815         }
1816         return outputFile;
1817     }
1818
1819     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1820         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1821         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1822     }
1823
1824     @Override
1825     public boolean isRemote() {
1826         return false;
1827     }
1828
1829     @Override
1830     public String getObjectPath() {
1831         return null;
1832     }
1833
1834     private void sendGroups() throws IOException, UntrustedIdentityException {
1835         File groupsFile = IOUtils.createTempFile();
1836
1837         try {
1838             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1839                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1840                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1841                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1842                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1843                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1844                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1845                 }
1846             }
1847
1848             if (groupsFile.exists() && groupsFile.length() > 0) {
1849                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1850                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1851                             .withStream(groupsFileStream)
1852                             .withContentType("application/octet-stream")
1853                             .withLength(groupsFile.length())
1854                             .build();
1855
1856                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1857                 }
1858             }
1859         } finally {
1860             try {
1861                 Files.delete(groupsFile.toPath());
1862             } catch (IOException e) {
1863                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1864             }
1865         }
1866     }
1867
1868     public void sendContacts() throws IOException, UntrustedIdentityException {
1869         File contactsFile = IOUtils.createTempFile();
1870
1871         try {
1872             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1873                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1874                 for (ContactInfo record : account.getContactStore().getContacts()) {
1875                     VerifiedMessage verifiedMessage = null;
1876                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1877                     if (currentIdentity != null) {
1878                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1879                     }
1880
1881                     ProfileKey profileKey = null;
1882                     try {
1883                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1884                     } catch (InvalidInputException ignored) {
1885                     }
1886                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1887                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1888                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1889                             Optional.of(record.messageExpirationTime),
1890                             Optional.fromNullable(record.inboxPosition), record.archived));
1891                 }
1892
1893                 if (account.getProfileKey() != null) {
1894                     // Send our own profile key as well
1895                     out.write(new DeviceContact(account.getSelfAddress(),
1896                             Optional.absent(), Optional.absent(),
1897                             Optional.absent(), Optional.absent(),
1898                             Optional.of(account.getProfileKey()),
1899                             false, Optional.absent(), Optional.absent(), false));
1900                 }
1901             }
1902
1903             if (contactsFile.exists() && contactsFile.length() > 0) {
1904                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1905                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1906                             .withStream(contactsFileStream)
1907                             .withContentType("application/octet-stream")
1908                             .withLength(contactsFile.length())
1909                             .build();
1910
1911                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1912                 }
1913             }
1914         } finally {
1915             try {
1916                 Files.delete(contactsFile.toPath());
1917             } catch (IOException e) {
1918                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1919             }
1920         }
1921     }
1922
1923     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1924         List<SignalServiceAddress> addresses = new ArrayList<>();
1925         for (ContactInfo record : account.getContactStore().getContacts()) {
1926             if (record.blocked) {
1927                 addresses.add(record.getAddress());
1928             }
1929         }
1930         List<byte[]> groupIds = new ArrayList<>();
1931         for (GroupInfo record : account.getGroupStore().getGroups()) {
1932             if (record.blocked) {
1933                 groupIds.add(record.groupId);
1934             }
1935         }
1936         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1937     }
1938
1939     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1940         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1941         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1942     }
1943
1944     public List<ContactInfo> getContacts() {
1945         return account.getContactStore().getContacts();
1946     }
1947
1948     public ContactInfo getContact(String number) {
1949         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1950     }
1951
1952     public GroupInfo getGroup(byte[] groupId) {
1953         return account.getGroupStore().getGroup(groupId);
1954     }
1955
1956     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1957         return account.getSignalProtocolStore().getIdentities();
1958     }
1959
1960     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1961         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1962     }
1963
1964     /**
1965      * Trust this the identity with this fingerprint
1966      *
1967      * @param name        username of the identity
1968      * @param fingerprint Fingerprint
1969      */
1970     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1971         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1972         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1973         if (ids == null) {
1974             return false;
1975         }
1976         for (JsonIdentityKeyStore.Identity id : ids) {
1977             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1978                 continue;
1979             }
1980
1981             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1982             try {
1983                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1984             } catch (IOException | UntrustedIdentityException e) {
1985                 e.printStackTrace();
1986             }
1987             account.save();
1988             return true;
1989         }
1990         return false;
1991     }
1992
1993     /**
1994      * Trust this the identity with this safety number
1995      *
1996      * @param name         username of the identity
1997      * @param safetyNumber Safety number
1998      */
1999     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
2000         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
2001         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2002         if (ids == null) {
2003             return false;
2004         }
2005         for (JsonIdentityKeyStore.Identity id : ids) {
2006             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2007                 continue;
2008             }
2009
2010             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2011             try {
2012                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2013             } catch (IOException | UntrustedIdentityException e) {
2014                 e.printStackTrace();
2015             }
2016             account.save();
2017             return true;
2018         }
2019         return false;
2020     }
2021
2022     /**
2023      * Trust all keys of this identity without verification
2024      *
2025      * @param name username of the identity
2026      */
2027     public boolean trustIdentityAllKeys(String name) {
2028         SignalServiceAddress address = resolveSignalServiceAddress(name);
2029         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2030         if (ids == null) {
2031             return false;
2032         }
2033         for (JsonIdentityKeyStore.Identity id : ids) {
2034             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2035                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2036                 try {
2037                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2038                 } catch (IOException | UntrustedIdentityException e) {
2039                     e.printStackTrace();
2040                 }
2041             }
2042         }
2043         account.save();
2044         return true;
2045     }
2046
2047     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
2048         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentity(), theirAddress, theirIdentityKey);
2049     }
2050
2051     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2052         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
2053         return resolveSignalServiceAddress(canonicalizedNumber);
2054     }
2055
2056     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2057         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2058
2059         return resolveSignalServiceAddress(address);
2060     }
2061
2062     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2063         if (address.matches(account.getSelfAddress())) {
2064             return account.getSelfAddress();
2065         }
2066
2067         return account.getRecipientStore().resolveServiceAddress(address);
2068     }
2069
2070     public interface ReceiveMessageHandler {
2071
2072         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2073     }
2074 }