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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.Signal;
  22 import org.asamk.signal.AttachmentInvalidException;
  23 import org.asamk.signal.GroupNotFoundException;
  24 import org.asamk.signal.JsonStickerPack;
  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         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 737     }
 738
 739     @Override
 740     public String getContactName(String number) throws InvalidNumberException {
 741         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 742         if (contact == null) {
 743             return "";
 744         } else {
 745             return contact.name;
 746         }
 747     }
 748
 749     @Override
 750     public void setContactName(String number, String name) throws InvalidNumberException {
 751         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 752         ContactInfo contact = account.getContactStore().getContact(address);
 753         if (contact == null) {
 754             contact = new ContactInfo(address);
 755             System.err.println("Add contact " + contact.number + " named " + name);
 756         } else {
 757             System.err.println("Updating contact " + contact.number + " name " + contact.name + " -> " + name);
 758         }
 759         contact.name = name;
 760         account.getContactStore().updateContact(contact);
 761         account.save();
 762     }
 763
 764     @Override
 765     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 766         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 767     }
 768
 769     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 770         ContactInfo contact = account.getContactStore().getContact(address);
 771         if (contact == null) {
 772             contact = new ContactInfo(address);
 773             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + address.getNumber().orNull());
 774         } else {
 775             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + address.getNumber().orNull());
 776         }
 777         contact.blocked = blocked;
 778         account.getContactStore().updateContact(contact);
 779         account.save();
 780     }
 781
 782     @Override
 783     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 784         GroupInfo group = getGroup(groupId);
 785         if (group == null) {
 786             throw new GroupNotFoundException(groupId);
 787         } else {
 788             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 789             group.blocked = blocked;
 790             account.getGroupStore().updateGroup(group);
 791             account.save();
 792         }
 793     }
 794
 795     @Override
 796     public List<byte[]> getGroupIds() {
 797         List<GroupInfo> groups = getGroups();
 798         List<byte[]> ids = new ArrayList<>(groups.size());
 799         for (GroupInfo group : groups) {
 800             ids.add(group.groupId);
 801         }
 802         return ids;
 803     }
 804
 805     @Override
 806     public String getGroupName(byte[] groupId) {
 807         GroupInfo group = getGroup(groupId);
 808         if (group == null) {
 809             return "";
 810         } else {
 811             return group.name;
 812         }
 813     }
 814
 815     @Override
 816     public List<String> getGroupMembers(byte[] groupId) {
 817         GroupInfo group = getGroup(groupId);
 818         if (group == null) {
 819             return Collections.emptyList();
 820         } else {
 821             return new ArrayList<>(group.getMembersE164());
 822         }
 823     }
 824
 825     @Override
 826     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException {
 827         if (groupId.length == 0) {
 828             groupId = null;
 829         }
 830         if (name.isEmpty()) {
 831             name = null;
 832         }
 833         if (members.size() == 0) {
 834             members = null;
 835         }
 836         if (avatar.isEmpty()) {
 837             avatar = null;
 838         }
 839         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 840     }
 841
 842     /**
 843      * Change the expiration timer for a contact
 844      */
 845     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) {
 846         ContactInfo c = account.getContactStore().getContact(address);
 847         c.messageExpirationTime = messageExpirationTimer;
 848         account.getContactStore().updateContact(c);
 849     }
 850
 851     /**
 852      * Change the expiration timer for a group
 853      */
 854     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 855         GroupInfo g = account.getGroupStore().getGroup(groupId);
 856         g.messageExpirationTime = messageExpirationTimer;
 857         account.getGroupStore().updateGroup(g);
 858     }
 859
 860     /**
 861      * Upload the sticker pack from path.
 862      *
 863      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 864      * @return if successful, returns the URL to install the sticker pack in the signal app
 865      */
 866     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 867         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 868
 869         SignalServiceMessageSender messageSender = getMessageSender();
 870
 871         byte[] packKey = KeyUtils.createStickerUploadKey();
 872         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 873
 874         try {
 875             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 876                     .toString();
 877         } catch (URISyntaxException e) {
 878             throw new AssertionError(e);
 879         }
 880     }
 881
 882     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 883         ZipFile zip = null;
 884         String rootPath = null;
 885
 886         final File file = new File(path);
 887         if (file.getName().endsWith(".zip")) {
 888             zip = new ZipFile(file);
 889         } else if (file.getName().equals("manifest.json")) {
 890             rootPath = file.getParent();
 891         } else {
 892             throw new StickerPackInvalidException("Could not find manifest.json");
 893         }
 894
 895         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 896
 897         if (pack.stickers == null) {
 898             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 899         }
 900
 901         if (pack.stickers.isEmpty()) {
 902             throw new StickerPackInvalidException("Must include stickers.");
 903         }
 904
 905         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 906         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 907             if (sticker.file == null) {
 908                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 909             }
 910
 911             Pair<InputStream, Long> data;
 912             try {
 913                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 914             } catch (IOException ignored) {
 915                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 916             }
 917
 918             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 919             stickers.add(stickerInfo);
 920         }
 921
 922         StickerInfo cover = null;
 923         if (pack.cover != null) {
 924             if (pack.cover.file == null) {
 925                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 926             }
 927
 928             Pair<InputStream, Long> data;
 929             try {
 930                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 931             } catch (IOException ignored) {
 932                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 933             }
 934
 935             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 936         }
 937
 938         return new SignalServiceStickerManifestUpload(
 939                 pack.title,
 940                 pack.author,
 941                 cover,
 942                 stickers);
 943     }
 944
 945     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 946         InputStream inputStream;
 947         if (zip != null) {
 948             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 949         } else {
 950             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 951         }
 952         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 953     }
 954
 955     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 956         if (zip != null) {
 957             final ZipEntry entry = zip.getEntry(subfile);
 958             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 959         } else {
 960             final File file = new File(rootPath, subfile);
 961             return new Pair<>(new FileInputStream(file), file.length());
 962         }
 963     }
 964
 965     private void requestSyncGroups() throws IOException {
 966         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 967         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 968         try {
 969             sendSyncMessage(message);
 970         } catch (UntrustedIdentityException e) {
 971             e.printStackTrace();
 972         }
 973     }
 974
 975     private void requestSyncContacts() throws IOException {
 976         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 977         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 978         try {
 979             sendSyncMessage(message);
 980         } catch (UntrustedIdentityException e) {
 981             e.printStackTrace();
 982         }
 983     }
 984
 985     private void requestSyncBlocked() throws IOException {
 986         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 987         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 988         try {
 989             sendSyncMessage(message);
 990         } catch (UntrustedIdentityException e) {
 991             e.printStackTrace();
 992         }
 993     }
 994
 995     private void requestSyncConfiguration() throws IOException {
 996         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 997         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 998         try {
 999             sendSyncMessage(message);
1000         } catch (UntrustedIdentityException e) {
1001             e.printStackTrace();
1002         }
1003     }
1004
1005     private byte[] getSenderCertificate() {
1006         // TODO support UUID capable sender certificates
1007         // byte[] certificate = accountManager.getSenderCertificate();
1008         byte[] certificate;
1009         try {
1010             certificate = accountManager.getSenderCertificateLegacy();
1011         } catch (IOException e) {
1012             System.err.println("Failed to get sender certificate: " + e);
1013             return null;
1014         }
1015         // TODO cache for a day
1016         return certificate;
1017     }
1018
1019     private byte[] getSelfUnidentifiedAccessKey() {
1020         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
1021     }
1022
1023     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
1024         ProfileCipher profileCipher = new ProfileCipher(profileKey);
1025         try {
1026             return new SignalProfile(
1027                     encryptedProfile.getIdentityKey(),
1028                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
1029                     encryptedProfile.getAvatar(),
1030                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
1031                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
1032             );
1033         } catch (InvalidCiphertextException e) {
1034             return null;
1035         }
1036     }
1037
1038     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
1039         ContactInfo contact = account.getContactStore().getContact(recipient);
1040         if (contact == null || contact.profileKey == null) {
1041             return null;
1042         }
1043         ProfileKey theirProfileKey;
1044         try {
1045             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
1046         } catch (InvalidInputException | IOException e) {
1047             throw new AssertionError(e);
1048         }
1049         SignalProfile targetProfile;
1050         try {
1051             targetProfile = decryptProfile(getRecipientProfile(recipient, Optional.absent()), theirProfileKey);
1052         } catch (IOException e) {
1053             System.err.println("Failed to get recipient profile: " + e);
1054             return null;
1055         }
1056
1057         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
1058             return null;
1059         }
1060
1061         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
1062             return KeyUtils.createUnrestrictedUnidentifiedAccess();
1063         }
1064
1065         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
1066     }
1067
1068     private Optional<UnidentifiedAccessPair> getAccessForSync() {
1069         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1070         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1071
1072         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1073             return Optional.absent();
1074         }
1075
1076         try {
1077             return Optional.of(new UnidentifiedAccessPair(
1078                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1079                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1080             ));
1081         } catch (InvalidCertificateException e) {
1082             return Optional.absent();
1083         }
1084     }
1085
1086     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1087         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1088         for (SignalServiceAddress recipient : recipients) {
1089             result.add(getAccessFor(recipient));
1090         }
1091         return result;
1092     }
1093
1094     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1095         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1096         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1097         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1098
1099         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1100             return Optional.absent();
1101         }
1102
1103         try {
1104             return Optional.of(new UnidentifiedAccessPair(
1105                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1106                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1107             ));
1108         } catch (InvalidCertificateException e) {
1109             return Optional.absent();
1110         }
1111     }
1112
1113     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1114         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1115
1116         if (unidentifiedAccess.isPresent()) {
1117             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1118         }
1119
1120         return Optional.absent();
1121     }
1122
1123     private void sendSyncMessage(SignalServiceSyncMessage message)
1124             throws IOException, UntrustedIdentityException {
1125         SignalServiceMessageSender messageSender = getMessageSender();
1126         try {
1127             messageSender.sendMessage(message, getAccessForSync());
1128         } catch (UntrustedIdentityException e) {
1129             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1130             throw e;
1131         }
1132     }
1133
1134     /**
1135      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1136      */
1137     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1138             throws EncapsulatedExceptions, IOException {
1139         final long timestamp = System.currentTimeMillis();
1140         messageBuilder.withTimestamp(timestamp);
1141         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1142
1143         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1144         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1145         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1146
1147         for (SendMessageResult result : results) {
1148             if (result.isUnregisteredFailure()) {
1149                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1150             } else if (result.isNetworkFailure()) {
1151                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1152             } else if (result.getIdentityFailure() != null) {
1153                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1154             }
1155         }
1156         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1157             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1158         }
1159         return timestamp;
1160     }
1161
1162     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1163         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1164
1165         for (String number : numbers) {
1166             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1167         }
1168         return signalServiceAddresses;
1169     }
1170
1171     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1172             throws IOException {
1173         if (messagePipe == null) {
1174             messagePipe = getMessageReceiver().createMessagePipe();
1175         }
1176         if (unidentifiedMessagePipe == null) {
1177             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1178         }
1179         SignalServiceDataMessage message = null;
1180         try {
1181             SignalServiceMessageSender messageSender = getMessageSender();
1182
1183             message = messageBuilder.build();
1184             if (message.getGroupContext().isPresent()) {
1185                 try {
1186                     final boolean isRecipientUpdate = false;
1187                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1188                     for (SendMessageResult r : result) {
1189                         if (r.getIdentityFailure() != null) {
1190                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1191                         }
1192                     }
1193                     return result;
1194                 } catch (UntrustedIdentityException e) {
1195                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1196                     return Collections.emptyList();
1197                 }
1198             } else if (recipients.size() == 1 && recipients.contains(account.getSelfAddress())) {
1199                 SignalServiceAddress recipient = account.getSelfAddress();
1200                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1201                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1202                         message.getTimestamp(),
1203                         message,
1204                         message.getExpiresInSeconds(),
1205                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1206                         false);
1207                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1208
1209                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1210                 try {
1211                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
1212                 } catch (UntrustedIdentityException e) {
1213                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1214                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
1215                 }
1216                 return results;
1217             } else {
1218                 // Send to all individually, so sync messages are sent correctly
1219                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1220                 for (SignalServiceAddress address : recipients) {
1221                     ContactInfo contact = account.getContactStore().getContact(address);
1222                     if (contact != null) {
1223                         messageBuilder.withExpiration(contact.messageExpirationTime);
1224                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1225                     } else {
1226                         messageBuilder.withExpiration(0);
1227                         messageBuilder.withProfileKey(null);
1228                     }
1229                     message = messageBuilder.build();
1230                     try {
1231                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
1232                         results.add(result);
1233                     } catch (UntrustedIdentityException e) {
1234                         account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1235                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
1236                     }
1237                 }
1238                 return results;
1239             }
1240         } finally {
1241             if (message != null && message.isEndSession()) {
1242                 for (SignalServiceAddress recipient : recipients) {
1243                     handleEndSession(recipient);
1244                 }
1245             }
1246             account.save();
1247         }
1248     }
1249
1250     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1251         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1252         try {
1253             return cipher.decrypt(envelope);
1254         } catch (ProtocolUntrustedIdentityException e) {
1255             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1256                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1257                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1258                 throw identityException;
1259             }
1260             throw new AssertionError(e);
1261         }
1262     }
1263
1264     private void handleEndSession(SignalServiceAddress source) {
1265         account.getSignalProtocolStore().deleteAllSessions(source);
1266     }
1267
1268     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1269         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1270             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1271             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1272             switch (groupInfo.getType()) {
1273                 case UPDATE:
1274                     if (group == null) {
1275                         group = new GroupInfo(groupInfo.getGroupId());
1276                     }
1277
1278                     if (groupInfo.getAvatar().isPresent()) {
1279                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1280                         if (avatar.isPointer()) {
1281                             try {
1282                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1283                             } catch (IOException | InvalidMessageException e) {
1284                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
1285                             }
1286                         }
1287                     }
1288
1289                     if (groupInfo.getName().isPresent()) {
1290                         group.name = groupInfo.getName().get();
1291                     }
1292
1293                     if (groupInfo.getMembers().isPresent()) {
1294                         group.addMembers(groupInfo.getMembers().get()
1295                                 .stream()
1296                                 .map(this::resolveSignalServiceAddress)
1297                                 .collect(Collectors.toSet()));
1298                     }
1299
1300                     account.getGroupStore().updateGroup(group);
1301                     break;
1302                 case DELIVER:
1303                     if (group == null) {
1304                         try {
1305                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1306                         } catch (IOException | EncapsulatedExceptions e) {
1307                             e.printStackTrace();
1308                         }
1309                     }
1310                     break;
1311                 case QUIT:
1312                     if (group == null) {
1313                         try {
1314                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1315                         } catch (IOException | EncapsulatedExceptions e) {
1316                             e.printStackTrace();
1317                         }
1318                     } else {
1319                         group.removeMember(source);
1320                         account.getGroupStore().updateGroup(group);
1321                     }
1322                     break;
1323                 case REQUEST_INFO:
1324                     if (group != null) {
1325                         try {
1326                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1327                         } catch (IOException | EncapsulatedExceptions e) {
1328                             e.printStackTrace();
1329                         } catch (NotAGroupMemberException e) {
1330                             // We have left this group, so don't send a group update message
1331                         }
1332                     }
1333                     break;
1334             }
1335         }
1336         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1337         if (message.isEndSession()) {
1338             handleEndSession(conversationPartnerAddress);
1339         }
1340         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1341             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1342                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1343                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1344                 if (group == null) {
1345                     group = new GroupInfo(groupInfo.getGroupId());
1346                 }
1347                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1348                     group.messageExpirationTime = message.getExpiresInSeconds();
1349                     account.getGroupStore().updateGroup(group);
1350                 }
1351             } else {
1352                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1353                 if (contact == null) {
1354                     contact = new ContactInfo(conversationPartnerAddress);
1355                 }
1356                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1357                     contact.messageExpirationTime = message.getExpiresInSeconds();
1358                     account.getContactStore().updateContact(contact);
1359                 }
1360             }
1361         }
1362         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1363             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1364                 if (attachment.isPointer()) {
1365                     try {
1366                         retrieveAttachment(attachment.asPointer());
1367                     } catch (IOException | InvalidMessageException e) {
1368                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
1369                     }
1370                 }
1371             }
1372         }
1373         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1374             if (source.matches(account.getSelfAddress())) {
1375                 try {
1376                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1377                 } catch (InvalidInputException ignored) {
1378                 }
1379                 ContactInfo contact = account.getContactStore().getContact(source);
1380                 if (contact != null) {
1381                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1382                     account.getContactStore().updateContact(contact);
1383                 }
1384             } else {
1385                 ContactInfo contact = account.getContactStore().getContact(source);
1386                 if (contact == null) {
1387                     contact = new ContactInfo(source);
1388                 }
1389                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1390                 account.getContactStore().updateContact(contact);
1391             }
1392         }
1393         if (message.getPreviews().isPresent()) {
1394             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1395             for (SignalServiceDataMessage.Preview preview : previews) {
1396                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1397                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1398                     try {
1399                         retrieveAttachment(attachment);
1400                     } catch (IOException | InvalidMessageException e) {
1401                         System.err.println("Failed to retrieve attachment (" + attachment.getId() + "): " + e.getMessage());
1402                     }
1403                 }
1404             }
1405         }
1406     }
1407
1408     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1409         final File cachePath = new File(getMessageCachePath());
1410         if (!cachePath.exists()) {
1411             return;
1412         }
1413         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1414             if (!dir.isDirectory()) {
1415                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1416                 continue;
1417             }
1418
1419             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1420                 if (!fileEntry.isFile()) {
1421                     continue;
1422                 }
1423                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1424             }
1425             // Try to delete directory if empty
1426             dir.delete();
1427         }
1428     }
1429
1430     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1431         SignalServiceEnvelope envelope;
1432         try {
1433             envelope = Utils.loadEnvelope(fileEntry);
1434             if (envelope == null) {
1435                 return;
1436             }
1437         } catch (IOException e) {
1438             e.printStackTrace();
1439             return;
1440         }
1441         SignalServiceContent content = null;
1442         if (!envelope.isReceipt()) {
1443             try {
1444                 content = decryptMessage(envelope);
1445             } catch (Exception e) {
1446                 return;
1447             }
1448             handleMessage(envelope, content, ignoreAttachments);
1449         }
1450         account.save();
1451         handler.handleMessage(envelope, content, null);
1452         try {
1453             Files.delete(fileEntry.toPath());
1454         } catch (IOException e) {
1455             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1456         }
1457     }
1458
1459     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1460         retryFailedReceivedMessages(handler, ignoreAttachments);
1461         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1462
1463         try {
1464             if (messagePipe == null) {
1465                 messagePipe = messageReceiver.createMessagePipe();
1466             }
1467
1468             while (true) {
1469                 SignalServiceEnvelope envelope;
1470                 SignalServiceContent content = null;
1471                 Exception exception = null;
1472                 final long now = new Date().getTime();
1473                 try {
1474                     envelope = messagePipe.read(timeout, unit, envelope1 -> {
1475                         // store message on disk, before acknowledging receipt to the server
1476                         try {
1477                             File cacheFile = getMessageCacheFile(envelope1.getSourceE164().get(), now, envelope1.getTimestamp());
1478                             Utils.storeEnvelope(envelope1, cacheFile);
1479                         } catch (IOException e) {
1480                             System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1481                         }
1482                     });
1483                 } catch (TimeoutException e) {
1484                     if (returnOnTimeout)
1485                         return;
1486                     continue;
1487                 } catch (InvalidVersionException e) {
1488                     System.err.println("Ignoring error: " + e.getMessage());
1489                     continue;
1490                 }
1491                 if (!envelope.isReceipt()) {
1492                     try {
1493                         content = decryptMessage(envelope);
1494                     } catch (Exception e) {
1495                         exception = e;
1496                     }
1497                     handleMessage(envelope, content, ignoreAttachments);
1498                 }
1499                 account.save();
1500                 if (!isMessageBlocked(envelope, content)) {
1501                     handler.handleMessage(envelope, content, exception);
1502                 }
1503                 if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1504                     File cacheFile = null;
1505                     try {
1506                         cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1507                         Files.delete(cacheFile.toPath());
1508                         // Try to delete directory if empty
1509                         new File(getMessageCachePath()).delete();
1510                     } catch (IOException e) {
1511                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1512                     }
1513                 }
1514             }
1515         } finally {
1516             if (messagePipe != null) {
1517                 messagePipe.shutdown();
1518                 messagePipe = null;
1519             }
1520         }
1521     }
1522
1523     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1524         SignalServiceAddress source;
1525         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1526             source = envelope.getSourceAddress();
1527         } else if (content != null) {
1528             source = content.getSender();
1529         } else {
1530             return false;
1531         }
1532         ContactInfo sourceContact = account.getContactStore().getContact(source);
1533         if (sourceContact != null && sourceContact.blocked) {
1534             return true;
1535         }
1536
1537         if (content != null && content.getDataMessage().isPresent()) {
1538             SignalServiceDataMessage message = content.getDataMessage().get();
1539             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1540                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1541                 GroupInfo group = getGroup(groupInfo.getGroupId());
1542                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1543                     return true;
1544                 }
1545             }
1546         }
1547         return false;
1548     }
1549
1550     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1551         if (content != null) {
1552             SignalServiceAddress sender;
1553             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1554                 sender = envelope.getSourceAddress();
1555             } else {
1556                 sender = content.getSender();
1557             }
1558             if (content.getDataMessage().isPresent()) {
1559                 SignalServiceDataMessage message = content.getDataMessage().get();
1560
1561                 if (content.isNeedsReceipt()) {
1562                     try {
1563                         sendReceipt(sender, message.getTimestamp());
1564                     } catch (IOException | UntrustedIdentityException e) {
1565                         e.printStackTrace();
1566                     }
1567                 }
1568
1569                 handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments);
1570             }
1571             if (content.getSyncMessage().isPresent()) {
1572                 account.setMultiDevice(true);
1573                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1574                 if (syncMessage.getSent().isPresent()) {
1575                     SentTranscriptMessage message = syncMessage.getSent().get();
1576                     handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments);
1577                 }
1578                 if (syncMessage.getRequest().isPresent()) {
1579                     RequestMessage rm = syncMessage.getRequest().get();
1580                     if (rm.isContactsRequest()) {
1581                         try {
1582                             sendContacts();
1583                         } catch (UntrustedIdentityException | IOException e) {
1584                             e.printStackTrace();
1585                         }
1586                     }
1587                     if (rm.isGroupsRequest()) {
1588                         try {
1589                             sendGroups();
1590                         } catch (UntrustedIdentityException | IOException e) {
1591                             e.printStackTrace();
1592                         }
1593                     }
1594                     if (rm.isBlockedListRequest()) {
1595                         try {
1596                             sendBlockedList();
1597                         } catch (UntrustedIdentityException | IOException e) {
1598                             e.printStackTrace();
1599                         }
1600                     }
1601                     // TODO Handle rm.isConfigurationRequest();
1602                 }
1603                 if (syncMessage.getGroups().isPresent()) {
1604                     File tmpFile = null;
1605                     try {
1606                         tmpFile = IOUtils.createTempFile();
1607                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1608                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1609                             DeviceGroup g;
1610                             while ((g = s.read()) != null) {
1611                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1612                                 if (syncGroup == null) {
1613                                     syncGroup = new GroupInfo(g.getId());
1614                                 }
1615                                 if (g.getName().isPresent()) {
1616                                     syncGroup.name = g.getName().get();
1617                                 }
1618                                 syncGroup.addMembers(g.getMembers()
1619                                         .stream()
1620                                         .map(this::resolveSignalServiceAddress)
1621                                         .collect(Collectors.toSet()));
1622                                 if (!g.isActive()) {
1623                                     syncGroup.removeMember(account.getSelfAddress());
1624                                 } else {
1625                                     // Add ourself to the member set as it's marked as active
1626                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1627                                 }
1628                                 syncGroup.blocked = g.isBlocked();
1629                                 if (g.getColor().isPresent()) {
1630                                     syncGroup.color = g.getColor().get();
1631                                 }
1632
1633                                 if (g.getAvatar().isPresent()) {
1634                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1635                                 }
1636                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1637                                 syncGroup.archived = g.isArchived();
1638                                 account.getGroupStore().updateGroup(syncGroup);
1639                             }
1640                         }
1641                     } catch (Exception e) {
1642                         e.printStackTrace();
1643                     } finally {
1644                         if (tmpFile != null) {
1645                             try {
1646                                 Files.delete(tmpFile.toPath());
1647                             } catch (IOException e) {
1648                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1649                             }
1650                         }
1651                     }
1652                 }
1653                 if (syncMessage.getBlockedList().isPresent()) {
1654                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1655                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1656                         setContactBlocked(resolveSignalServiceAddress(address), true);
1657                     }
1658                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1659                         try {
1660                             setGroupBlocked(groupId, true);
1661                         } catch (GroupNotFoundException e) {
1662                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1663                         }
1664                     }
1665                 }
1666                 if (syncMessage.getContacts().isPresent()) {
1667                     File tmpFile = null;
1668                     try {
1669                         tmpFile = IOUtils.createTempFile();
1670                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1671                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1672                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1673                             if (contactsMessage.isComplete()) {
1674                                 account.getContactStore().clear();
1675                             }
1676                             DeviceContact c;
1677                             while ((c = s.read()) != null) {
1678                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1679                                     account.setProfileKey(c.getProfileKey().get());
1680                                 }
1681                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1682                                 ContactInfo contact = account.getContactStore().getContact(address);
1683                                 if (contact == null) {
1684                                     contact = new ContactInfo(address);
1685                                 }
1686                                 if (c.getName().isPresent()) {
1687                                     contact.name = c.getName().get();
1688                                 }
1689                                 if (c.getColor().isPresent()) {
1690                                     contact.color = c.getColor().get();
1691                                 }
1692                                 if (c.getProfileKey().isPresent()) {
1693                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1694                                 }
1695                                 if (c.getVerified().isPresent()) {
1696                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1697                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1698                                 }
1699                                 if (c.getExpirationTimer().isPresent()) {
1700                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1701                                 }
1702                                 contact.blocked = c.isBlocked();
1703                                 contact.inboxPosition = c.getInboxPosition().orNull();
1704                                 contact.archived = c.isArchived();
1705                                 account.getContactStore().updateContact(contact);
1706
1707                                 if (c.getAvatar().isPresent()) {
1708                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1709                                 }
1710                             }
1711                         }
1712                     } catch (Exception e) {
1713                         e.printStackTrace();
1714                     } finally {
1715                         if (tmpFile != null) {
1716                             try {
1717                                 Files.delete(tmpFile.toPath());
1718                             } catch (IOException e) {
1719                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1720                             }
1721                         }
1722                     }
1723                 }
1724                 if (syncMessage.getVerified().isPresent()) {
1725                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1726                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1727                 }
1728                 if (syncMessage.getConfiguration().isPresent()) {
1729                     // TODO
1730                 }
1731             }
1732         }
1733     }
1734
1735     private File getContactAvatarFile(String number) {
1736         return new File(avatarsPath, "contact-" + number);
1737     }
1738
1739     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1740         IOUtils.createPrivateDirectories(avatarsPath);
1741         if (attachment.isPointer()) {
1742             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1743             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1744         } else {
1745             SignalServiceAttachmentStream stream = attachment.asStream();
1746             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1747         }
1748     }
1749
1750     private File getGroupAvatarFile(byte[] groupId) {
1751         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1752     }
1753
1754     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1755         IOUtils.createPrivateDirectories(avatarsPath);
1756         if (attachment.isPointer()) {
1757             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1758             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1759         } else {
1760             SignalServiceAttachmentStream stream = attachment.asStream();
1761             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1762         }
1763     }
1764
1765     public File getAttachmentFile(long attachmentId) {
1766         return new File(attachmentsPath, attachmentId + "");
1767     }
1768
1769     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1770         IOUtils.createPrivateDirectories(attachmentsPath);
1771         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1772     }
1773
1774     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1775         if (storePreview && pointer.getPreview().isPresent()) {
1776             File previewFile = new File(outputFile + ".preview");
1777             try (OutputStream output = new FileOutputStream(previewFile)) {
1778                 byte[] preview = pointer.getPreview().get();
1779                 output.write(preview, 0, preview.length);
1780             } catch (FileNotFoundException e) {
1781                 e.printStackTrace();
1782                 return null;
1783             }
1784         }
1785
1786         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1787
1788         File tmpFile = IOUtils.createTempFile();
1789         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1790             try (OutputStream output = new FileOutputStream(outputFile)) {
1791                 byte[] buffer = new byte[4096];
1792                 int read;
1793
1794                 while ((read = input.read(buffer)) != -1) {
1795                     output.write(buffer, 0, read);
1796                 }
1797             } catch (FileNotFoundException e) {
1798                 e.printStackTrace();
1799                 return null;
1800             }
1801         } finally {
1802             try {
1803                 Files.delete(tmpFile.toPath());
1804             } catch (IOException e) {
1805                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1806             }
1807         }
1808         return outputFile;
1809     }
1810
1811     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1812         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1813         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1814     }
1815
1816     @Override
1817     public boolean isRemote() {
1818         return false;
1819     }
1820
1821     private void sendGroups() throws IOException, UntrustedIdentityException {
1822         File groupsFile = IOUtils.createTempFile();
1823
1824         try {
1825             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1826                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1827                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1828                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1829                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1830                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1831                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1832                 }
1833             }
1834
1835             if (groupsFile.exists() && groupsFile.length() > 0) {
1836                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1837                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1838                             .withStream(groupsFileStream)
1839                             .withContentType("application/octet-stream")
1840                             .withLength(groupsFile.length())
1841                             .build();
1842
1843                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1844                 }
1845             }
1846         } finally {
1847             try {
1848                 Files.delete(groupsFile.toPath());
1849             } catch (IOException e) {
1850                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1851             }
1852         }
1853     }
1854
1855     public void sendContacts() throws IOException, UntrustedIdentityException {
1856         File contactsFile = IOUtils.createTempFile();
1857
1858         try {
1859             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1860                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1861                 for (ContactInfo record : account.getContactStore().getContacts()) {
1862                     VerifiedMessage verifiedMessage = null;
1863                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1864                     if (currentIdentity != null) {
1865                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1866                     }
1867
1868                     ProfileKey profileKey = null;
1869                     try {
1870                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1871                     } catch (InvalidInputException ignored) {
1872                     }
1873                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1874                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1875                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1876                             Optional.of(record.messageExpirationTime),
1877                             Optional.fromNullable(record.inboxPosition), record.archived));
1878                 }
1879
1880                 if (account.getProfileKey() != null) {
1881                     // Send our own profile key as well
1882                     out.write(new DeviceContact(account.getSelfAddress(),
1883                             Optional.absent(), Optional.absent(),
1884                             Optional.absent(), Optional.absent(),
1885                             Optional.of(account.getProfileKey()),
1886                             false, Optional.absent(), Optional.absent(), false));
1887                 }
1888             }
1889
1890             if (contactsFile.exists() && contactsFile.length() > 0) {
1891                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1892                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1893                             .withStream(contactsFileStream)
1894                             .withContentType("application/octet-stream")
1895                             .withLength(contactsFile.length())
1896                             .build();
1897
1898                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1899                 }
1900             }
1901         } finally {
1902             try {
1903                 Files.delete(contactsFile.toPath());
1904             } catch (IOException e) {
1905                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1906             }
1907         }
1908     }
1909
1910     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1911         List<SignalServiceAddress> addresses = new ArrayList<>();
1912         for (ContactInfo record : account.getContactStore().getContacts()) {
1913             if (record.blocked) {
1914                 addresses.add(record.getAddress());
1915             }
1916         }
1917         List<byte[]> groupIds = new ArrayList<>();
1918         for (GroupInfo record : account.getGroupStore().getGroups()) {
1919             if (record.blocked) {
1920                 groupIds.add(record.groupId);
1921             }
1922         }
1923         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1924     }
1925
1926     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1927         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1928         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1929     }
1930
1931     public List<ContactInfo> getContacts() {
1932         return account.getContactStore().getContacts();
1933     }
1934
1935     public ContactInfo getContact(String number) {
1936         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1937     }
1938
1939     public GroupInfo getGroup(byte[] groupId) {
1940         return account.getGroupStore().getGroup(groupId);
1941     }
1942
1943     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1944         return account.getSignalProtocolStore().getIdentities();
1945     }
1946
1947     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1948         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1949     }
1950
1951     /**
1952      * Trust this the identity with this fingerprint
1953      *
1954      * @param name        username of the identity
1955      * @param fingerprint Fingerprint
1956      */
1957     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1958         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1959         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1960         if (ids == null) {
1961             return false;
1962         }
1963         for (JsonIdentityKeyStore.Identity id : ids) {
1964             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1965                 continue;
1966             }
1967
1968             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1969             try {
1970                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1971             } catch (IOException | UntrustedIdentityException e) {
1972                 e.printStackTrace();
1973             }
1974             account.save();
1975             return true;
1976         }
1977         return false;
1978     }
1979
1980     /**
1981      * Trust this the identity with this safety number
1982      *
1983      * @param name         username of the identity
1984      * @param safetyNumber Safety number
1985      */
1986     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1987         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1988         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1989         if (ids == null) {
1990             return false;
1991         }
1992         for (JsonIdentityKeyStore.Identity id : ids) {
1993             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
1994                 continue;
1995             }
1996
1997             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1998             try {
1999                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2000             } catch (IOException | UntrustedIdentityException e) {
2001                 e.printStackTrace();
2002             }
2003             account.save();
2004             return true;
2005         }
2006         return false;
2007     }
2008
2009     /**
2010      * Trust all keys of this identity without verification
2011      *
2012      * @param name username of the identity
2013      */
2014     public boolean trustIdentityAllKeys(String name) {
2015         SignalServiceAddress address = resolveSignalServiceAddress(name);
2016         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2017         if (ids == null) {
2018             return false;
2019         }
2020         for (JsonIdentityKeyStore.Identity id : ids) {
2021             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2022                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2023                 try {
2024                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2025                 } catch (IOException | UntrustedIdentityException e) {
2026                     e.printStackTrace();
2027                 }
2028             }
2029         }
2030         account.save();
2031         return true;
2032     }
2033
2034     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
2035         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentity(), theirAddress, theirIdentityKey);
2036     }
2037
2038     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2039         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
2040         return resolveSignalServiceAddress(canonicalizedNumber);
2041     }
2042
2043     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2044         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2045
2046         return resolveSignalServiceAddress(address);
2047     }
2048
2049     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2050         if (address.matches(account.getSelfAddress())) {
2051             return account.getSelfAddress();
2052         }
2053
2054         return account.getRecipientStore().resolveServiceAddress(address);
2055     }
2056
2057     public interface ReceiveMessageHandler {
2058
2059         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2060     }
2061 }