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

   1 /*
   2   Copyright (C) 2015-2020 AsamK and contributors
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import com.fasterxml.jackson.databind.ObjectMapper;
  20
  21 import org.asamk.Signal;
  22 import org.asamk.signal.AttachmentInvalidException;
  23 import org.asamk.signal.GroupNotFoundException;
  24 import org.asamk.signal.NotAGroupMemberException;
  25 import org.asamk.signal.StickerPackInvalidException;
  26 import org.asamk.signal.TrustLevel;
  27 import org.asamk.signal.UserAlreadyExists;
  28 import org.asamk.signal.storage.SignalAccount;
  29 import org.asamk.signal.storage.contacts.ContactInfo;
  30 import org.asamk.signal.storage.groups.GroupInfo;
  31 import org.asamk.signal.storage.groups.JsonGroupStore;
  32 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  33 import org.asamk.signal.util.IOUtils;
  34 import org.asamk.signal.util.Util;
  35 import org.signal.libsignal.metadata.InvalidMetadataMessageException;
  36 import org.signal.libsignal.metadata.InvalidMetadataVersionException;
  37 import org.signal.libsignal.metadata.ProtocolDuplicateMessageException;
  38 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  39 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  40 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  41 import org.signal.libsignal.metadata.ProtocolInvalidVersionException;
  42 import org.signal.libsignal.metadata.ProtocolLegacyMessageException;
  43 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  44 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  45 import org.signal.libsignal.metadata.SelfSendException;
  46 import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
  47 import org.signal.zkgroup.InvalidInputException;
  48 import org.signal.zkgroup.VerificationFailedException;
  49 import org.signal.zkgroup.profiles.ProfileKey;
  50 import org.whispersystems.libsignal.IdentityKey;
  51 import org.whispersystems.libsignal.IdentityKeyPair;
  52 import org.whispersystems.libsignal.InvalidKeyException;
  53 import org.whispersystems.libsignal.InvalidMessageException;
  54 import org.whispersystems.libsignal.InvalidVersionException;
  55 import org.whispersystems.libsignal.ecc.Curve;
  56 import org.whispersystems.libsignal.ecc.ECKeyPair;
  57 import org.whispersystems.libsignal.ecc.ECPublicKey;
  58 import org.whispersystems.libsignal.state.PreKeyRecord;
  59 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  60 import org.whispersystems.libsignal.util.KeyHelper;
  61 import org.whispersystems.libsignal.util.Medium;
  62 import org.whispersystems.libsignal.util.Pair;
  63 import org.whispersystems.libsignal.util.guava.Optional;
  64 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  65 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  66 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  67 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  68 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
  69 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
  70 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  71 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  72 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  73 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  74 import org.whispersystems.signalservice.api.messages.SendMessageResult;
  75 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  76 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
  77 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  78 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  79 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  80 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  81 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  82 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  83 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload;
  84 import org.whispersystems.signalservice.api.messages.SignalServiceStickerManifestUpload.StickerInfo;
  85 import org.whispersystems.signalservice.api.messages.multidevice.BlockedListMessage;
  86 import org.whispersystems.signalservice.api.messages.multidevice.ContactsMessage;
  87 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContact;
  88 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsInputStream;
  89 import org.whispersystems.signalservice.api.messages.multidevice.DeviceContactsOutputStream;
  90 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroup;
  91 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsInputStream;
  92 import org.whispersystems.signalservice.api.messages.multidevice.DeviceGroupsOutputStream;
  93 import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
  94 import org.whispersystems.signalservice.api.messages.multidevice.RequestMessage;
  95 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  96 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  97 import org.whispersystems.signalservice.api.messages.multidevice.VerifiedMessage;
  98 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
  99 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
 100 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
 101 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
 102 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
 103 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 104 import org.whispersystems.signalservice.api.util.InvalidNumberException;
 105 import org.whispersystems.signalservice.api.util.SleepTimer;
 106 import org.whispersystems.signalservice.api.util.StreamDetails;
 107 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
 108 import org.whispersystems.signalservice.api.util.UuidUtil;
 109 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 110 import org.whispersystems.signalservice.internal.push.UnsupportedDataMessageException;
 111 import org.whispersystems.signalservice.internal.util.Hex;
 112 import org.whispersystems.util.Base64;
 113
 114 import java.io.File;
 115 import java.io.FileInputStream;
 116 import java.io.FileNotFoundException;
 117 import java.io.FileOutputStream;
 118 import java.io.IOException;
 119 import java.io.InputStream;
 120 import java.io.OutputStream;
 121 import java.net.URI;
 122 import java.net.URISyntaxException;
 123 import java.net.URLEncoder;
 124 import java.nio.file.Files;
 125 import java.nio.file.Paths;
 126 import java.nio.file.StandardCopyOption;
 127 import java.util.ArrayList;
 128 import java.util.Arrays;
 129 import java.util.Collection;
 130 import java.util.Collections;
 131 import java.util.Date;
 132 import java.util.HashSet;
 133 import java.util.LinkedList;
 134 import java.util.List;
 135 import java.util.Locale;
 136 import java.util.Objects;
 137 import java.util.Set;
 138 import java.util.UUID;
 139 import java.util.concurrent.TimeUnit;
 140 import java.util.concurrent.TimeoutException;
 141 import java.util.stream.Collectors;
 142 import java.util.zip.ZipEntry;
 143 import java.util.zip.ZipFile;
 144
 145 public class Manager implements Signal {
 146
 147     private final String settingsPath;
 148     private final String dataPath;
 149     private final String attachmentsPath;
 150     private final String avatarsPath;
 151     private final SleepTimer timer = new UptimeSleepTimer();
 152
 153     private SignalAccount account;
 154     private String username;
 155     private SignalServiceAccountManager accountManager;
 156     private SignalServiceMessagePipe messagePipe = null;
 157     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
 158
 159     public Manager(String username, String settingsPath) {
 160         this.username = username;
 161         this.settingsPath = settingsPath;
 162         this.dataPath = this.settingsPath + "/data";
 163         this.attachmentsPath = this.settingsPath + "/attachments";
 164         this.avatarsPath = this.settingsPath + "/avatars";
 165
 166     }
 167
 168     public String getUsername() {
 169         return username;
 170     }
 171
 172     public SignalServiceAddress getSelfAddress() {
 173         return account.getSelfAddress();
 174     }
 175
 176     private SignalServiceAccountManager getSignalServiceAccountManager() {
 177         return new SignalServiceAccountManager(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 178     }
 179
 180     private IdentityKey getIdentity() {
 181         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
 182     }
 183
 184     public int getDeviceId() {
 185         return account.getDeviceId();
 186     }
 187
 188     private String getMessageCachePath() {
 189         return this.dataPath + "/" + username + ".d/msg-cache";
 190     }
 191
 192     private String getMessageCachePath(String sender) {
 193         if (sender == null || sender.isEmpty()) {
 194             return getMessageCachePath();
 195         }
 196
 197         return getMessageCachePath() + "/" + sender.replace("/", "_");
 198     }
 199
 200     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 201         String cachePath = getMessageCachePath(sender);
 202         IOUtils.createPrivateDirectories(cachePath);
 203         return new File(cachePath + "/" + now + "_" + timestamp);
 204     }
 205
 206     public boolean userHasKeys() {
 207         return account != null && account.getSignalProtocolStore() != null;
 208     }
 209
 210     public void init() throws IOException {
 211         if (!SignalAccount.userExists(dataPath, username)) {
 212             return;
 213         }
 214         account = SignalAccount.load(dataPath, username);
 215         account.setResolver(this::resolveSignalServiceAddress);
 216
 217         migrateLegacyConfigs();
 218
 219         accountManager = getSignalServiceAccountManager();
 220         if (account.isRegistered()) {
 221             if (accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 222                 refreshPreKeys();
 223                 account.save();
 224             }
 225             if (account.getUuid() == null) {
 226                 account.setUuid(accountManager.getOwnUuid());
 227                 account.save();
 228             }
 229         }
 230     }
 231
 232     private void migrateLegacyConfigs() {
 233         // Copy group avatars that were previously stored in the attachments folder
 234         // to the new avatar folder
 235         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 236             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 237                 File avatarFile = getGroupAvatarFile(g.groupId);
 238                 File attachmentFile = getAttachmentFile(g.getAvatarId());
 239                 if (!avatarFile.exists() && attachmentFile.exists()) {
 240                     try {
 241                         IOUtils.createPrivateDirectories(avatarsPath);
 242                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 243                     } catch (Exception e) {
 244                         // Ignore
 245                     }
 246                 }
 247             }
 248             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 249             account.save();
 250         }
 251         if (account.getProfileKey() == null) {
 252             // Old config file, creating new profile key
 253             account.setProfileKey(KeyUtils.createProfileKey());
 254             account.save();
 255         }
 256     }
 257
 258     private void createNewIdentity() throws IOException {
 259         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 260         int registrationId = KeyHelper.generateRegistrationId(false);
 261         if (username == null) {
 262             account = SignalAccount.createTemporaryAccount(identityKey, registrationId);
 263             account.setResolver(this::resolveSignalServiceAddress);
 264         } else {
 265             ProfileKey profileKey = KeyUtils.createProfileKey();
 266             account = SignalAccount.create(dataPath, username, identityKey, registrationId, profileKey);
 267             account.setResolver(this::resolveSignalServiceAddress);
 268             account.save();
 269         }
 270     }
 271
 272     public boolean isRegistered() {
 273         return account != null && account.isRegistered();
 274     }
 275
 276     public void register(boolean voiceVerification) throws IOException {
 277         if (account == null) {
 278             createNewIdentity();
 279         }
 280         account.setPassword(KeyUtils.createPassword());
 281         account.setUuid(null);
 282         accountManager = getSignalServiceAccountManager();
 283
 284         if (voiceVerification) {
 285             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.absent(), Optional.absent());
 286         } else {
 287             accountManager.requestSmsVerificationCode(false, Optional.absent(), Optional.absent());
 288         }
 289
 290         account.setRegistered(false);
 291         account.save();
 292     }
 293
 294     public void updateAccountAttributes() throws IOException {
 295         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), account.getRegistrationLock(), getSelfUnidentifiedAccessKey(), false, BaseConfig.capabilities);
 296     }
 297
 298     public void setProfileName(String name) throws IOException {
 299         accountManager.setProfileName(account.getProfileKey(), name);
 300     }
 301
 302     public void setProfileAvatar(File avatar) throws IOException {
 303         final StreamDetails streamDetails = Utils.createStreamDetailsFromFile(avatar);
 304         accountManager.setProfileAvatar(account.getProfileKey(), streamDetails);
 305         streamDetails.getStream().close();
 306     }
 307
 308     public void removeProfileAvatar() throws IOException {
 309         accountManager.setProfileAvatar(account.getProfileKey(), null);
 310     }
 311
 312     public void unregister() throws IOException {
 313         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 314         // If this is the master device, other users can't send messages to this number anymore.
 315         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 316         accountManager.setGcmId(Optional.absent());
 317
 318         account.setRegistered(false);
 319         account.save();
 320     }
 321
 322     public String getDeviceLinkUri() throws TimeoutException, IOException {
 323         if (account == null) {
 324             createNewIdentity();
 325         }
 326         account.setPassword(KeyUtils.createPassword());
 327         accountManager = getSignalServiceAccountManager();
 328         String uuid = accountManager.getNewDeviceUuid();
 329
 330         return Utils.createDeviceLinkUri(new Utils.DeviceLinkInfo(uuid, getIdentity().getPublicKey()));
 331     }
 332
 333     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 334         account.setSignalingKey(KeyUtils.createSignalingKey());
 335         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 336
 337         username = ret.getNumber();
 338         // TODO do this check before actually registering
 339         if (SignalAccount.userExists(dataPath, username)) {
 340             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 341         }
 342
 343         // Create new account with the synced identity
 344         byte[] profileKeyBytes = ret.getProfileKey();
 345         ProfileKey profileKey;
 346         if (profileKeyBytes == null) {
 347             profileKey = KeyUtils.createProfileKey();
 348         } else {
 349             try {
 350                 profileKey = new ProfileKey(profileKeyBytes);
 351             } catch (InvalidInputException e) {
 352                 throw new IOException("Received invalid profileKey", e);
 353             }
 354         }
 355         account = SignalAccount.createLinkedAccount(dataPath, username, ret.getUuid(), account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 356         account.setResolver(this::resolveSignalServiceAddress);
 357
 358         refreshPreKeys();
 359
 360         requestSyncGroups();
 361         requestSyncContacts();
 362         requestSyncBlocked();
 363         requestSyncConfiguration();
 364
 365         account.save();
 366     }
 367
 368     public List<DeviceInfo> getLinkedDevices() throws IOException {
 369         List<DeviceInfo> devices = accountManager.getDevices();
 370         account.setMultiDevice(devices.size() > 1);
 371         account.save();
 372         return devices;
 373     }
 374
 375     public void removeLinkedDevices(int deviceId) throws IOException {
 376         accountManager.removeDevice(deviceId);
 377         List<DeviceInfo> devices = accountManager.getDevices();
 378         account.setMultiDevice(devices.size() > 1);
 379         account.save();
 380     }
 381
 382     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 383         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 384
 385         addDevice(info.deviceIdentifier, info.deviceKey);
 386     }
 387
 388     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 389         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 390         String verificationCode = accountManager.getNewDeviceVerificationCode();
 391
 392         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey().serialize()), verificationCode);
 393         account.setMultiDevice(true);
 394         account.save();
 395     }
 396
 397     private List<PreKeyRecord> generatePreKeys() {
 398         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 399
 400         final int offset = account.getPreKeyIdOffset();
 401         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 402             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 403             ECKeyPair keyPair = Curve.generateKeyPair();
 404             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 405
 406             records.add(record);
 407         }
 408
 409         account.addPreKeys(records);
 410         account.save();
 411
 412         return records;
 413     }
 414
 415     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 416         try {
 417             ECKeyPair keyPair = Curve.generateKeyPair();
 418             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 419             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 420
 421             account.addSignedPreKey(record);
 422             account.save();
 423
 424             return record;
 425         } catch (InvalidKeyException e) {
 426             throw new AssertionError(e);
 427         }
 428     }
 429
 430     public void verifyAccount(String verificationCode, String pin) throws IOException {
 431         verificationCode = verificationCode.replace("-", "");
 432         account.setSignalingKey(KeyUtils.createSignalingKey());
 433         // TODO make unrestricted unidentified access configurable
 434         UUID uuid = accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, null, getSelfUnidentifiedAccessKey(), false, BaseConfig.capabilities);
 435
 436         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 437         account.setRegistered(true);
 438         account.setUuid(uuid);
 439         account.setRegistrationLockPin(pin);
 440         account.getSignalProtocolStore().saveIdentity(account.getSelfAddress(), account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey(), TrustLevel.TRUSTED_VERIFIED);
 441
 442         refreshPreKeys();
 443         account.save();
 444     }
 445
 446     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 447         if (pin.isPresent()) {
 448             account.setRegistrationLockPin(pin.get());
 449             throw new RuntimeException("Not implemented anymore, will be replaced with KBS");
 450         } else {
 451             account.setRegistrationLockPin(null);
 452             accountManager.removeV1Pin();
 453         }
 454         account.save();
 455     }
 456
 457     private void refreshPreKeys() throws IOException {
 458         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 459         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 460         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 461
 462         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 463     }
 464
 465     private SignalServiceMessageReceiver getMessageReceiver() {
 466         return new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
 467     }
 468
 469     private SignalServiceMessageSender getMessageSender() {
 470         return new SignalServiceMessageSender(BaseConfig.serviceConfiguration, account.getUuid(), account.getUsername(), account.getPassword(),
 471                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.absent());
 472     }
 473
 474     private SignalServiceProfile getRecipientProfile(SignalServiceAddress address, Optional<UnidentifiedAccess> unidentifiedAccess) throws IOException {
 475         SignalServiceMessagePipe pipe = unidentifiedMessagePipe != null && unidentifiedAccess.isPresent() ? unidentifiedMessagePipe
 476                 : messagePipe;
 477
 478         if (pipe != null) {
 479             try {
 480                 return pipe.getProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 481             } catch (IOException ignored) {
 482             }
 483         }
 484
 485         SignalServiceMessageReceiver receiver = getMessageReceiver();
 486         try {
 487             return receiver.retrieveProfile(address, Optional.absent(), unidentifiedAccess, SignalServiceProfile.RequestType.PROFILE).getProfile();
 488         } catch (VerificationFailedException e) {
 489             throw new AssertionError(e);
 490         }
 491     }
 492
 493     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 494         File file = getGroupAvatarFile(groupId);
 495         if (!file.exists()) {
 496             return Optional.absent();
 497         }
 498
 499         return Optional.of(Utils.createAttachment(file));
 500     }
 501
 502     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 503         File file = getContactAvatarFile(number);
 504         if (!file.exists()) {
 505             return Optional.absent();
 506         }
 507
 508         return Optional.of(Utils.createAttachment(file));
 509     }
 510
 511     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 512         GroupInfo g = account.getGroupStore().getGroup(groupId);
 513         if (g == null) {
 514             throw new GroupNotFoundException(groupId);
 515         }
 516         if (!g.isMember(account.getSelfAddress())) {
 517             throw new NotAGroupMemberException(groupId, g.name);
 518         }
 519         return g;
 520     }
 521
 522     public List<GroupInfo> getGroups() {
 523         return account.getGroupStore().getGroups();
 524     }
 525
 526     @Override
 527     public long sendGroupMessage(String messageText, List<String> attachments,
 528                                  byte[] groupId)
 529             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 530         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 531         if (attachments != null) {
 532             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 533         }
 534         if (groupId != null) {
 535             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 536                     .withId(groupId)
 537                     .build();
 538             messageBuilder.asGroupMessage(group);
 539         }
 540
 541         final GroupInfo g = getGroupForSending(groupId);
 542
 543         messageBuilder.withExpiration(g.messageExpirationTime);
 544
 545         return sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 546     }
 547
 548     public void sendGroupMessageReaction(String emoji, boolean remove, String targetAuthor,
 549                                          long targetSentTimestamp, byte[] groupId)
 550             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 551         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 552         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 553                 .withReaction(reaction);
 554         if (groupId != null) {
 555             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 556                     .withId(groupId)
 557                     .build();
 558             messageBuilder.asGroupMessage(group);
 559         }
 560         final GroupInfo g = getGroupForSending(groupId);
 561         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 562     }
 563
 564     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 565         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 566                 .withId(groupId)
 567                 .build();
 568
 569         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 570                 .asGroupMessage(group);
 571
 572         final GroupInfo g = getGroupForSending(groupId);
 573         g.removeMember(account.getSelfAddress());
 574         account.getGroupStore().updateGroup(g);
 575
 576         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 577     }
 578
 579     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<SignalServiceAddress> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 580         GroupInfo g;
 581         if (groupId == null) {
 582             // Create new group
 583             g = new GroupInfo(KeyUtils.createGroupId());
 584             g.addMembers(Collections.singleton(account.getSelfAddress()));
 585         } else {
 586             g = getGroupForSending(groupId);
 587         }
 588
 589         if (name != null) {
 590             g.name = name;
 591         }
 592
 593         if (members != null) {
 594             final Set<String> newE164Members = new HashSet<>();
 595             for (SignalServiceAddress member : members) {
 596                 if (g.isMember(member) || !member.getNumber().isPresent()) {
 597                     continue;
 598                 }
 599                 newE164Members.add(member.getNumber().get());
 600             }
 601
 602             final List<ContactTokenDetails> contacts = accountManager.getContacts(newE164Members);
 603             if (contacts.size() != newE164Members.size()) {
 604                 // Some of the new members are not registered on Signal
 605                 for (ContactTokenDetails contact : contacts) {
 606                     newE164Members.remove(contact.getNumber());
 607                 }
 608                 System.err.println("Failed to add members " + Util.join(", ", newE164Members) + " to group: Not registered on Signal");
 609                 System.err.println("Aborting…");
 610                 System.exit(1);
 611             }
 612
 613             g.addMembers(members);
 614         }
 615
 616         if (avatarFile != null) {
 617             IOUtils.createPrivateDirectories(avatarsPath);
 618             File aFile = getGroupAvatarFile(g.groupId);
 619             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 620         }
 621
 622         account.getGroupStore().updateGroup(g);
 623
 624         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 625
 626         sendMessageLegacy(messageBuilder, g.getMembersWithout(account.getSelfAddress()));
 627         return g.groupId;
 628     }
 629
 630     private void sendUpdateGroupMessage(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 631         if (groupId == null) {
 632             return;
 633         }
 634         GroupInfo g = getGroupForSending(groupId);
 635
 636         if (!g.isMember(recipient)) {
 637             return;
 638         }
 639
 640         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 641
 642         // Send group message only to the recipient who requested it
 643         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 644     }
 645
 646     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 647         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 648                 .withId(g.groupId)
 649                 .withName(g.name)
 650                 .withMembers(new ArrayList<>(g.getMembers()));
 651
 652         File aFile = getGroupAvatarFile(g.groupId);
 653         if (aFile.exists()) {
 654             try {
 655                 group.withAvatar(Utils.createAttachment(aFile));
 656             } catch (IOException e) {
 657                 throw new AttachmentInvalidException(aFile.toString(), e);
 658             }
 659         }
 660
 661         return SignalServiceDataMessage.newBuilder()
 662                 .asGroupMessage(group.build())
 663                 .withExpiration(g.messageExpirationTime);
 664     }
 665
 666     private void sendGroupInfoRequest(byte[] groupId, SignalServiceAddress recipient) throws IOException, EncapsulatedExceptions {
 667         if (groupId == null) {
 668             return;
 669         }
 670
 671         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 672                 .withId(groupId);
 673
 674         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 675                 .asGroupMessage(group.build());
 676
 677         // Send group info request message to the recipient who sent us a message with this groupId
 678         sendMessageLegacy(messageBuilder, Collections.singleton(recipient));
 679     }
 680
 681     private void sendReceipt(SignalServiceAddress remoteAddress, long messageId) throws IOException, UntrustedIdentityException {
 682         SignalServiceReceiptMessage receiptMessage = new SignalServiceReceiptMessage(SignalServiceReceiptMessage.Type.DELIVERY,
 683                 Collections.singletonList(messageId),
 684                 System.currentTimeMillis());
 685
 686         getMessageSender().sendReceipt(remoteAddress, getAccessFor(remoteAddress), receiptMessage);
 687     }
 688
 689     @Override
 690     public long sendMessage(String message, List<String> attachments, String recipient)
 691             throws EncapsulatedExceptions, AttachmentInvalidException, IOException, InvalidNumberException {
 692         List<String> recipients = new ArrayList<>(1);
 693         recipients.add(recipient);
 694         return sendMessage(message, attachments, recipients);
 695     }
 696
 697     @Override
 698     public long sendMessage(String messageText, List<String> attachments,
 699                             List<String> recipients)
 700             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 701         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 702         if (attachments != null) {
 703             List<SignalServiceAttachment> attachmentStreams = Utils.getSignalServiceAttachments(attachments);
 704
 705             // Upload attachments here, so we only upload once even for multiple recipients
 706             SignalServiceMessageSender messageSender = getMessageSender();
 707             List<SignalServiceAttachment> attachmentPointers = new ArrayList<>(attachmentStreams.size());
 708             for (SignalServiceAttachment attachment : attachmentStreams) {
 709                 if (attachment.isStream()) {
 710                     attachmentPointers.add(messageSender.uploadAttachment(attachment.asStream()));
 711                 } else if (attachment.isPointer()) {
 712                     attachmentPointers.add(attachment.asPointer());
 713                 }
 714             }
 715
 716             messageBuilder.withAttachments(attachmentPointers);
 717         }
 718         return sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 719     }
 720
 721     public void sendMessageReaction(String emoji, boolean remove, String targetAuthor,
 722                                     long targetSentTimestamp, List<String> recipients)
 723             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, InvalidNumberException {
 724         SignalServiceDataMessage.Reaction reaction = new SignalServiceDataMessage.Reaction(emoji, remove, canonicalizeAndResolveSignalServiceAddress(targetAuthor), targetSentTimestamp);
 725         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 726                 .withReaction(reaction);
 727         sendMessageLegacy(messageBuilder, getSignalServiceAddresses(recipients));
 728     }
 729
 730     @Override
 731     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, InvalidNumberException {
 732         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 733                 .asEndSessionMessage();
 734
 735         final Collection<SignalServiceAddress> signalServiceAddresses = getSignalServiceAddresses(recipients);
 736         try {
 737             sendMessageLegacy(messageBuilder, signalServiceAddresses);
 738         } catch (Exception e) {
 739             for (SignalServiceAddress address : signalServiceAddresses) {
 740                 handleEndSession(address);
 741             }
 742             throw e;
 743         }
 744     }
 745
 746     @Override
 747     public String getContactName(String number) throws InvalidNumberException {
 748         ContactInfo contact = account.getContactStore().getContact(canonicalizeAndResolveSignalServiceAddress(number));
 749         if (contact == null) {
 750             return "";
 751         } else {
 752             return contact.name;
 753         }
 754     }
 755
 756     @Override
 757     public void setContactName(String number, String name) throws InvalidNumberException {
 758         final SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(number);
 759         ContactInfo contact = account.getContactStore().getContact(address);
 760         if (contact == null) {
 761             contact = new ContactInfo(address);
 762             System.err.println("Add contact " + contact.number + " named " + name);
 763         } else {
 764             System.err.println("Updating contact " + contact.number + " name " + contact.name + " -> " + name);
 765         }
 766         contact.name = name;
 767         account.getContactStore().updateContact(contact);
 768         account.save();
 769     }
 770
 771     @Override
 772     public void setContactBlocked(String number, boolean blocked) throws InvalidNumberException {
 773         setContactBlocked(canonicalizeAndResolveSignalServiceAddress(number), blocked);
 774     }
 775
 776     private void setContactBlocked(SignalServiceAddress address, boolean blocked) {
 777         ContactInfo contact = account.getContactStore().getContact(address);
 778         if (contact == null) {
 779             contact = new ContactInfo(address);
 780             System.err.println("Adding and " + (blocked ? "blocking" : "unblocking") + " contact " + address.getNumber().orNull());
 781         } else {
 782             System.err.println((blocked ? "Blocking" : "Unblocking") + " contact " + address.getNumber().orNull());
 783         }
 784         contact.blocked = blocked;
 785         account.getContactStore().updateContact(contact);
 786         account.save();
 787     }
 788
 789     @Override
 790     public void setGroupBlocked(final byte[] groupId, final boolean blocked) throws GroupNotFoundException {
 791         GroupInfo group = getGroup(groupId);
 792         if (group == null) {
 793             throw new GroupNotFoundException(groupId);
 794         } else {
 795             System.err.println((blocked ? "Blocking" : "Unblocking") + " group " + Base64.encodeBytes(groupId));
 796             group.blocked = blocked;
 797             account.getGroupStore().updateGroup(group);
 798             account.save();
 799         }
 800     }
 801
 802     @Override
 803     public List<byte[]> getGroupIds() {
 804         List<GroupInfo> groups = getGroups();
 805         List<byte[]> ids = new ArrayList<>(groups.size());
 806         for (GroupInfo group : groups) {
 807             ids.add(group.groupId);
 808         }
 809         return ids;
 810     }
 811
 812     @Override
 813     public String getGroupName(byte[] groupId) {
 814         GroupInfo group = getGroup(groupId);
 815         if (group == null) {
 816             return "";
 817         } else {
 818             return group.name;
 819         }
 820     }
 821
 822     @Override
 823     public List<String> getGroupMembers(byte[] groupId) {
 824         GroupInfo group = getGroup(groupId);
 825         if (group == null) {
 826             return Collections.emptyList();
 827         } else {
 828             return new ArrayList<>(group.getMembersE164());
 829         }
 830     }
 831
 832     @Override
 833     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, InvalidNumberException {
 834         if (groupId.length == 0) {
 835             groupId = null;
 836         }
 837         if (name.isEmpty()) {
 838             name = null;
 839         }
 840         if (members.size() == 0) {
 841             members = null;
 842         }
 843         if (avatar.isEmpty()) {
 844             avatar = null;
 845         }
 846         return sendUpdateGroupMessage(groupId, name, members == null ? null : getSignalServiceAddresses(members), avatar);
 847     }
 848
 849     /**
 850      * Change the expiration timer for a contact
 851      */
 852     public void setExpirationTimer(SignalServiceAddress address, int messageExpirationTimer) {
 853         ContactInfo c = account.getContactStore().getContact(address);
 854         c.messageExpirationTime = messageExpirationTimer;
 855         account.getContactStore().updateContact(c);
 856     }
 857
 858     /**
 859      * Change the expiration timer for a group
 860      */
 861     public void setExpirationTimer(byte[] groupId, int messageExpirationTimer) {
 862         GroupInfo g = account.getGroupStore().getGroup(groupId);
 863         g.messageExpirationTime = messageExpirationTimer;
 864         account.getGroupStore().updateGroup(g);
 865     }
 866
 867     /**
 868      * Upload the sticker pack from path.
 869      *
 870      * @param path Path can be a path to a manifest.json file or to a zip file that contains a manifest.json file
 871      * @return if successful, returns the URL to install the sticker pack in the signal app
 872      */
 873     public String uploadStickerPack(String path) throws IOException, StickerPackInvalidException {
 874         SignalServiceStickerManifestUpload manifest = getSignalServiceStickerManifestUpload(path);
 875
 876         SignalServiceMessageSender messageSender = getMessageSender();
 877
 878         byte[] packKey = KeyUtils.createStickerUploadKey();
 879         String packId = messageSender.uploadStickerManifest(manifest, packKey);
 880
 881         try {
 882             return new URI("https", "signal.art", "/addstickers/", "pack_id=" + URLEncoder.encode(packId, "utf-8") + "&pack_key=" + URLEncoder.encode(Hex.toStringCondensed(packKey), "utf-8"))
 883                     .toString();
 884         } catch (URISyntaxException e) {
 885             throw new AssertionError(e);
 886         }
 887     }
 888
 889     private SignalServiceStickerManifestUpload getSignalServiceStickerManifestUpload(final String path) throws IOException, StickerPackInvalidException {
 890         ZipFile zip = null;
 891         String rootPath = null;
 892
 893         final File file = new File(path);
 894         if (file.getName().endsWith(".zip")) {
 895             zip = new ZipFile(file);
 896         } else if (file.getName().equals("manifest.json")) {
 897             rootPath = file.getParent();
 898         } else {
 899             throw new StickerPackInvalidException("Could not find manifest.json");
 900         }
 901
 902         JsonStickerPack pack = parseStickerPack(rootPath, zip);
 903
 904         if (pack.stickers == null) {
 905             throw new StickerPackInvalidException("Must set a 'stickers' field.");
 906         }
 907
 908         if (pack.stickers.isEmpty()) {
 909             throw new StickerPackInvalidException("Must include stickers.");
 910         }
 911
 912         List<StickerInfo> stickers = new ArrayList<>(pack.stickers.size());
 913         for (JsonStickerPack.JsonSticker sticker : pack.stickers) {
 914             if (sticker.file == null) {
 915                 throw new StickerPackInvalidException("Must set a 'file' field on each sticker.");
 916             }
 917
 918             Pair<InputStream, Long> data;
 919             try {
 920                 data = getInputStreamAndLength(rootPath, zip, sticker.file);
 921             } catch (IOException ignored) {
 922                 throw new StickerPackInvalidException("Could not find find " + sticker.file);
 923             }
 924
 925             StickerInfo stickerInfo = new StickerInfo(data.first(), data.second(), Optional.fromNullable(sticker.emoji).or(""));
 926             stickers.add(stickerInfo);
 927         }
 928
 929         StickerInfo cover = null;
 930         if (pack.cover != null) {
 931             if (pack.cover.file == null) {
 932                 throw new StickerPackInvalidException("Must set a 'file' field on the cover.");
 933             }
 934
 935             Pair<InputStream, Long> data;
 936             try {
 937                 data = getInputStreamAndLength(rootPath, zip, pack.cover.file);
 938             } catch (IOException ignored) {
 939                 throw new StickerPackInvalidException("Could not find find " + pack.cover.file);
 940             }
 941
 942             cover = new StickerInfo(data.first(), data.second(), Optional.fromNullable(pack.cover.emoji).or(""));
 943         }
 944
 945         return new SignalServiceStickerManifestUpload(
 946                 pack.title,
 947                 pack.author,
 948                 cover,
 949                 stickers);
 950     }
 951
 952     private static JsonStickerPack parseStickerPack(String rootPath, ZipFile zip) throws IOException {
 953         InputStream inputStream;
 954         if (zip != null) {
 955             inputStream = zip.getInputStream(zip.getEntry("manifest.json"));
 956         } else {
 957             inputStream = new FileInputStream((new File(rootPath, "manifest.json")));
 958         }
 959         return new ObjectMapper().readValue(inputStream, JsonStickerPack.class);
 960     }
 961
 962     private static Pair<InputStream, Long> getInputStreamAndLength(final String rootPath, final ZipFile zip, final String subfile) throws IOException {
 963         if (zip != null) {
 964             final ZipEntry entry = zip.getEntry(subfile);
 965             return new Pair<>(zip.getInputStream(entry), entry.getSize());
 966         } else {
 967             final File file = new File(rootPath, subfile);
 968             return new Pair<>(new FileInputStream(file), file.length());
 969         }
 970     }
 971
 972     private void requestSyncGroups() throws IOException {
 973         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 974         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 975         try {
 976             sendSyncMessage(message);
 977         } catch (UntrustedIdentityException e) {
 978             e.printStackTrace();
 979         }
 980     }
 981
 982     private void requestSyncContacts() throws IOException {
 983         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 984         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 985         try {
 986             sendSyncMessage(message);
 987         } catch (UntrustedIdentityException e) {
 988             e.printStackTrace();
 989         }
 990     }
 991
 992     private void requestSyncBlocked() throws IOException {
 993         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 994         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 995         try {
 996             sendSyncMessage(message);
 997         } catch (UntrustedIdentityException e) {
 998             e.printStackTrace();
 999         }
1000     }
1001
1002     private void requestSyncConfiguration() throws IOException {
1003         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
1004         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
1005         try {
1006             sendSyncMessage(message);
1007         } catch (UntrustedIdentityException e) {
1008             e.printStackTrace();
1009         }
1010     }
1011
1012     private byte[] getSenderCertificate() {
1013         // TODO support UUID capable sender certificates
1014         // byte[] certificate = accountManager.getSenderCertificate();
1015         byte[] certificate;
1016         try {
1017             certificate = accountManager.getSenderCertificateLegacy();
1018         } catch (IOException e) {
1019             System.err.println("Failed to get sender certificate: " + e);
1020             return null;
1021         }
1022         // TODO cache for a day
1023         return certificate;
1024     }
1025
1026     private byte[] getSelfUnidentifiedAccessKey() {
1027         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
1028     }
1029
1030     private static SignalProfile decryptProfile(SignalServiceProfile encryptedProfile, ProfileKey profileKey) throws IOException {
1031         ProfileCipher profileCipher = new ProfileCipher(profileKey);
1032         try {
1033             return new SignalProfile(
1034                     encryptedProfile.getIdentityKey(),
1035                     encryptedProfile.getName() == null ? null : new String(profileCipher.decryptName(Base64.decode(encryptedProfile.getName()))),
1036                     encryptedProfile.getAvatar(),
1037                     encryptedProfile.getUnidentifiedAccess() == null || !profileCipher.verifyUnidentifiedAccess(Base64.decode(encryptedProfile.getUnidentifiedAccess())) ? null : encryptedProfile.getUnidentifiedAccess(),
1038                     encryptedProfile.isUnrestrictedUnidentifiedAccess()
1039             );
1040         } catch (InvalidCiphertextException e) {
1041             return null;
1042         }
1043     }
1044
1045     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
1046         ContactInfo contact = account.getContactStore().getContact(recipient);
1047         if (contact == null || contact.profileKey == null) {
1048             return null;
1049         }
1050         ProfileKey theirProfileKey;
1051         try {
1052             theirProfileKey = new ProfileKey(Base64.decode(contact.profileKey));
1053         } catch (InvalidInputException | IOException e) {
1054             throw new AssertionError(e);
1055         }
1056         SignalProfile targetProfile;
1057         try {
1058             targetProfile = decryptProfile(getRecipientProfile(recipient, Optional.absent()), theirProfileKey);
1059         } catch (IOException e) {
1060             System.err.println("Failed to get recipient profile: " + e);
1061             return null;
1062         }
1063
1064         if (targetProfile == null || targetProfile.getUnidentifiedAccess() == null) {
1065             return null;
1066         }
1067
1068         if (targetProfile.isUnrestrictedUnidentifiedAccess()) {
1069             return KeyUtils.createUnrestrictedUnidentifiedAccess();
1070         }
1071
1072         return UnidentifiedAccess.deriveAccessKeyFrom(theirProfileKey);
1073     }
1074
1075     private Optional<UnidentifiedAccessPair> getAccessForSync() {
1076         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1077         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1078
1079         if (selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1080             return Optional.absent();
1081         }
1082
1083         try {
1084             return Optional.of(new UnidentifiedAccessPair(
1085                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1086                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1087             ));
1088         } catch (InvalidCertificateException e) {
1089             return Optional.absent();
1090         }
1091     }
1092
1093     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
1094         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
1095         for (SignalServiceAddress recipient : recipients) {
1096             result.add(getAccessFor(recipient));
1097         }
1098         return result;
1099     }
1100
1101     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
1102         byte[] recipientUnidentifiedAccessKey = getTargetUnidentifiedAccessKey(recipient);
1103         byte[] selfUnidentifiedAccessKey = getSelfUnidentifiedAccessKey();
1104         byte[] selfUnidentifiedAccessCertificate = getSenderCertificate();
1105
1106         if (recipientUnidentifiedAccessKey == null || selfUnidentifiedAccessKey == null || selfUnidentifiedAccessCertificate == null) {
1107             return Optional.absent();
1108         }
1109
1110         try {
1111             return Optional.of(new UnidentifiedAccessPair(
1112                     new UnidentifiedAccess(recipientUnidentifiedAccessKey, selfUnidentifiedAccessCertificate),
1113                     new UnidentifiedAccess(selfUnidentifiedAccessKey, selfUnidentifiedAccessCertificate)
1114             ));
1115         } catch (InvalidCertificateException e) {
1116             return Optional.absent();
1117         }
1118     }
1119
1120     private Optional<UnidentifiedAccess> getUnidentifiedAccess(SignalServiceAddress recipient) {
1121         Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1122
1123         if (unidentifiedAccess.isPresent()) {
1124             return unidentifiedAccess.get().getTargetUnidentifiedAccess();
1125         }
1126
1127         return Optional.absent();
1128     }
1129
1130     private void sendSyncMessage(SignalServiceSyncMessage message)
1131             throws IOException, UntrustedIdentityException {
1132         SignalServiceMessageSender messageSender = getMessageSender();
1133         try {
1134             messageSender.sendMessage(message, getAccessForSync());
1135         } catch (UntrustedIdentityException e) {
1136             account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1137             throw e;
1138         }
1139     }
1140
1141     /**
1142      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
1143      */
1144     private long sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1145             throws EncapsulatedExceptions, IOException {
1146         final long timestamp = System.currentTimeMillis();
1147         messageBuilder.withTimestamp(timestamp);
1148         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
1149
1150         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
1151         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
1152         List<NetworkFailureException> networkExceptions = new LinkedList<>();
1153
1154         for (SendMessageResult result : results) {
1155             if (result.isUnregisteredFailure()) {
1156                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getLegacyIdentifier(), null));
1157             } else if (result.isNetworkFailure()) {
1158                 networkExceptions.add(new NetworkFailureException(result.getAddress().getLegacyIdentifier(), null));
1159             } else if (result.getIdentityFailure() != null) {
1160                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getLegacyIdentifier(), result.getIdentityFailure().getIdentityKey()));
1161             }
1162         }
1163         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
1164             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
1165         }
1166         return timestamp;
1167     }
1168
1169     private Collection<SignalServiceAddress> getSignalServiceAddresses(Collection<String> numbers) throws InvalidNumberException {
1170         final Set<SignalServiceAddress> signalServiceAddresses = new HashSet<>(numbers.size());
1171
1172         for (String number : numbers) {
1173             signalServiceAddresses.add(canonicalizeAndResolveSignalServiceAddress(number));
1174         }
1175         return signalServiceAddresses;
1176     }
1177
1178     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<SignalServiceAddress> recipients)
1179             throws IOException {
1180         if (messagePipe == null) {
1181             messagePipe = getMessageReceiver().createMessagePipe();
1182         }
1183         if (unidentifiedMessagePipe == null) {
1184             unidentifiedMessagePipe = getMessageReceiver().createUnidentifiedMessagePipe();
1185         }
1186         SignalServiceDataMessage message = null;
1187         try {
1188             SignalServiceMessageSender messageSender = getMessageSender();
1189
1190             message = messageBuilder.build();
1191             if (message.getGroupContext().isPresent()) {
1192                 try {
1193                     final boolean isRecipientUpdate = false;
1194                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipients), getAccessFor(recipients), isRecipientUpdate, message);
1195                     for (SendMessageResult r : result) {
1196                         if (r.getIdentityFailure() != null) {
1197                             account.getSignalProtocolStore().saveIdentity(r.getAddress(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
1198                         }
1199                     }
1200                     return result;
1201                 } catch (UntrustedIdentityException e) {
1202                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1203                     return Collections.emptyList();
1204                 }
1205             } else if (recipients.size() == 1 && recipients.contains(account.getSelfAddress())) {
1206                 SignalServiceAddress recipient = account.getSelfAddress();
1207                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
1208                 SentTranscriptMessage transcript = new SentTranscriptMessage(Optional.of(recipient),
1209                         message.getTimestamp(),
1210                         message,
1211                         message.getExpiresInSeconds(),
1212                         Collections.singletonMap(recipient, unidentifiedAccess.isPresent()),
1213                         false);
1214                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
1215
1216                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1217                 try {
1218                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
1219                 } catch (UntrustedIdentityException e) {
1220                     account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1221                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
1222                 }
1223                 return results;
1224             } else {
1225                 // Send to all individually, so sync messages are sent correctly
1226                 List<SendMessageResult> results = new ArrayList<>(recipients.size());
1227                 for (SignalServiceAddress address : recipients) {
1228                     ContactInfo contact = account.getContactStore().getContact(address);
1229                     if (contact != null) {
1230                         messageBuilder.withExpiration(contact.messageExpirationTime);
1231                         messageBuilder.withProfileKey(account.getProfileKey().serialize());
1232                     } else {
1233                         messageBuilder.withExpiration(0);
1234                         messageBuilder.withProfileKey(null);
1235                     }
1236                     message = messageBuilder.build();
1237                     try {
1238                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
1239                         results.add(result);
1240                     } catch (UntrustedIdentityException e) {
1241                         account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(e.getIdentifier()), e.getIdentityKey(), TrustLevel.UNTRUSTED);
1242                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
1243                     }
1244                 }
1245                 return results;
1246             }
1247         } finally {
1248             if (message != null && message.isEndSession()) {
1249                 for (SignalServiceAddress recipient : recipients) {
1250                     handleEndSession(recipient);
1251                 }
1252             }
1253             account.save();
1254         }
1255     }
1256
1257     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, SelfSendException, UnsupportedDataMessageException, org.whispersystems.libsignal.UntrustedIdentityException {
1258         SignalServiceCipher cipher = new SignalServiceCipher(account.getSelfAddress(), account.getSignalProtocolStore(), Utils.getCertificateValidator());
1259         try {
1260             return cipher.decrypt(envelope);
1261         } catch (ProtocolUntrustedIdentityException e) {
1262             if (e.getCause() instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
1263                 org.whispersystems.libsignal.UntrustedIdentityException identityException = (org.whispersystems.libsignal.UntrustedIdentityException) e.getCause();
1264                 account.getSignalProtocolStore().saveIdentity(resolveSignalServiceAddress(identityException.getName()), identityException.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
1265                 throw identityException;
1266             }
1267             throw new AssertionError(e);
1268         }
1269     }
1270
1271     private void handleEndSession(SignalServiceAddress source) {
1272         account.getSignalProtocolStore().deleteAllSessions(source);
1273     }
1274
1275     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, SignalServiceAddress source, SignalServiceAddress destination, boolean ignoreAttachments) {
1276         if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1277             SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1278             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1279             switch (groupInfo.getType()) {
1280                 case UPDATE:
1281                     if (group == null) {
1282                         group = new GroupInfo(groupInfo.getGroupId());
1283                     }
1284
1285                     if (groupInfo.getAvatar().isPresent()) {
1286                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
1287                         if (avatar.isPointer()) {
1288                             try {
1289                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
1290                             } catch (IOException | InvalidMessageException e) {
1291                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
1292                             }
1293                         }
1294                     }
1295
1296                     if (groupInfo.getName().isPresent()) {
1297                         group.name = groupInfo.getName().get();
1298                     }
1299
1300                     if (groupInfo.getMembers().isPresent()) {
1301                         group.addMembers(groupInfo.getMembers().get()
1302                                 .stream()
1303                                 .map(this::resolveSignalServiceAddress)
1304                                 .collect(Collectors.toSet()));
1305                     }
1306
1307                     account.getGroupStore().updateGroup(group);
1308                     break;
1309                 case DELIVER:
1310                     if (group == null) {
1311                         try {
1312                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1313                         } catch (IOException | EncapsulatedExceptions e) {
1314                             e.printStackTrace();
1315                         }
1316                     }
1317                     break;
1318                 case QUIT:
1319                     if (group == null) {
1320                         try {
1321                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
1322                         } catch (IOException | EncapsulatedExceptions e) {
1323                             e.printStackTrace();
1324                         }
1325                     } else {
1326                         group.removeMember(source);
1327                         account.getGroupStore().updateGroup(group);
1328                     }
1329                     break;
1330                 case REQUEST_INFO:
1331                     if (group != null) {
1332                         try {
1333                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
1334                         } catch (IOException | EncapsulatedExceptions e) {
1335                             e.printStackTrace();
1336                         } catch (NotAGroupMemberException e) {
1337                             // We have left this group, so don't send a group update message
1338                         }
1339                     }
1340                     break;
1341             }
1342         }
1343         final SignalServiceAddress conversationPartnerAddress = isSync ? destination : source;
1344         if (message.isEndSession()) {
1345             handleEndSession(conversationPartnerAddress);
1346         }
1347         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1348             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1349                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1350                 GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
1351                 if (group == null) {
1352                     group = new GroupInfo(groupInfo.getGroupId());
1353                 }
1354                 if (group.messageExpirationTime != message.getExpiresInSeconds()) {
1355                     group.messageExpirationTime = message.getExpiresInSeconds();
1356                     account.getGroupStore().updateGroup(group);
1357                 }
1358             } else {
1359                 ContactInfo contact = account.getContactStore().getContact(conversationPartnerAddress);
1360                 if (contact == null) {
1361                     contact = new ContactInfo(conversationPartnerAddress);
1362                 }
1363                 if (contact.messageExpirationTime != message.getExpiresInSeconds()) {
1364                     contact.messageExpirationTime = message.getExpiresInSeconds();
1365                     account.getContactStore().updateContact(contact);
1366                 }
1367             }
1368         }
1369         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1370             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1371                 if (attachment.isPointer()) {
1372                     try {
1373                         retrieveAttachment(attachment.asPointer());
1374                     } catch (IOException | InvalidMessageException e) {
1375                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
1376                     }
1377                 }
1378             }
1379         }
1380         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1381             if (source.matches(account.getSelfAddress())) {
1382                 try {
1383                     this.account.setProfileKey(new ProfileKey(message.getProfileKey().get()));
1384                 } catch (InvalidInputException ignored) {
1385                 }
1386                 ContactInfo contact = account.getContactStore().getContact(source);
1387                 if (contact != null) {
1388                     contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1389                     account.getContactStore().updateContact(contact);
1390                 }
1391             } else {
1392                 ContactInfo contact = account.getContactStore().getContact(source);
1393                 if (contact == null) {
1394                     contact = new ContactInfo(source);
1395                 }
1396                 contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1397                 account.getContactStore().updateContact(contact);
1398             }
1399         }
1400         if (message.getPreviews().isPresent()) {
1401             final List<SignalServiceDataMessage.Preview> previews = message.getPreviews().get();
1402             for (SignalServiceDataMessage.Preview preview : previews) {
1403                 if (preview.getImage().isPresent() && preview.getImage().get().isPointer()) {
1404                     SignalServiceAttachmentPointer attachment = preview.getImage().get().asPointer();
1405                     try {
1406                         retrieveAttachment(attachment);
1407                     } catch (IOException | InvalidMessageException e) {
1408                         System.err.println("Failed to retrieve attachment (" + attachment.getId() + "): " + e.getMessage());
1409                     }
1410                 }
1411             }
1412         }
1413     }
1414
1415     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1416         final File cachePath = new File(getMessageCachePath());
1417         if (!cachePath.exists()) {
1418             return;
1419         }
1420         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1421             if (!dir.isDirectory()) {
1422                 retryFailedReceivedMessage(handler, ignoreAttachments, dir);
1423                 continue;
1424             }
1425
1426             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1427                 if (!fileEntry.isFile()) {
1428                     continue;
1429                 }
1430                 retryFailedReceivedMessage(handler, ignoreAttachments, fileEntry);
1431             }
1432             // Try to delete directory if empty
1433             dir.delete();
1434         }
1435     }
1436
1437     private void retryFailedReceivedMessage(final ReceiveMessageHandler handler, final boolean ignoreAttachments, final File fileEntry) {
1438         SignalServiceEnvelope envelope;
1439         try {
1440             envelope = Utils.loadEnvelope(fileEntry);
1441             if (envelope == null) {
1442                 return;
1443             }
1444         } catch (IOException e) {
1445             e.printStackTrace();
1446             return;
1447         }
1448         SignalServiceContent content = null;
1449         if (!envelope.isReceipt()) {
1450             try {
1451                 content = decryptMessage(envelope);
1452             } catch (Exception e) {
1453                 return;
1454             }
1455             handleMessage(envelope, content, ignoreAttachments);
1456         }
1457         account.save();
1458         handler.handleMessage(envelope, content, null);
1459         try {
1460             Files.delete(fileEntry.toPath());
1461         } catch (IOException e) {
1462             System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1463         }
1464     }
1465
1466     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1467         retryFailedReceivedMessages(handler, ignoreAttachments);
1468         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1469
1470         try {
1471             if (messagePipe == null) {
1472                 messagePipe = messageReceiver.createMessagePipe();
1473             }
1474
1475             while (true) {
1476                 SignalServiceEnvelope envelope;
1477                 SignalServiceContent content = null;
1478                 Exception exception = null;
1479                 final long now = new Date().getTime();
1480                 try {
1481                     envelope = messagePipe.read(timeout, unit, envelope1 -> {
1482                         // store message on disk, before acknowledging receipt to the server
1483                         try {
1484                             File cacheFile = getMessageCacheFile(envelope1.getSourceE164().get(), now, envelope1.getTimestamp());
1485                             Utils.storeEnvelope(envelope1, cacheFile);
1486                         } catch (IOException e) {
1487                             System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1488                         }
1489                     });
1490                 } catch (TimeoutException e) {
1491                     if (returnOnTimeout)
1492                         return;
1493                     continue;
1494                 } catch (InvalidVersionException e) {
1495                     System.err.println("Ignoring error: " + e.getMessage());
1496                     continue;
1497                 }
1498                 if (!envelope.isReceipt()) {
1499                     try {
1500                         content = decryptMessage(envelope);
1501                     } catch (Exception e) {
1502                         exception = e;
1503                     }
1504                     handleMessage(envelope, content, ignoreAttachments);
1505                 }
1506                 account.save();
1507                 if (!isMessageBlocked(envelope, content)) {
1508                     handler.handleMessage(envelope, content, exception);
1509                 }
1510                 if (!(exception instanceof org.whispersystems.libsignal.UntrustedIdentityException)) {
1511                     File cacheFile = null;
1512                     try {
1513                         cacheFile = getMessageCacheFile(envelope.getSourceE164().get(), now, envelope.getTimestamp());
1514                         Files.delete(cacheFile.toPath());
1515                         // Try to delete directory if empty
1516                         new File(getMessageCachePath()).delete();
1517                     } catch (IOException e) {
1518                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1519                     }
1520                 }
1521             }
1522         } finally {
1523             if (messagePipe != null) {
1524                 messagePipe.shutdown();
1525                 messagePipe = null;
1526             }
1527         }
1528     }
1529
1530     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
1531         SignalServiceAddress source;
1532         if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1533             source = envelope.getSourceAddress();
1534         } else if (content != null) {
1535             source = content.getSender();
1536         } else {
1537             return false;
1538         }
1539         ContactInfo sourceContact = account.getContactStore().getContact(source);
1540         if (sourceContact != null && sourceContact.blocked) {
1541             return true;
1542         }
1543
1544         if (content != null && content.getDataMessage().isPresent()) {
1545             SignalServiceDataMessage message = content.getDataMessage().get();
1546             if (message.getGroupContext().isPresent() && message.getGroupContext().get().getGroupV1().isPresent()) {
1547                 SignalServiceGroup groupInfo = message.getGroupContext().get().getGroupV1().get();
1548                 GroupInfo group = getGroup(groupInfo.getGroupId());
1549                 if (groupInfo.getType() == SignalServiceGroup.Type.DELIVER && group != null && group.blocked) {
1550                     return true;
1551                 }
1552             }
1553         }
1554         return false;
1555     }
1556
1557     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1558         if (content != null) {
1559             SignalServiceAddress sender;
1560             if (!envelope.isUnidentifiedSender() && envelope.hasSource()) {
1561                 sender = envelope.getSourceAddress();
1562             } else {
1563                 sender = content.getSender();
1564             }
1565             if (content.getDataMessage().isPresent()) {
1566                 SignalServiceDataMessage message = content.getDataMessage().get();
1567
1568                 if (content.isNeedsReceipt()) {
1569                     try {
1570                         sendReceipt(sender, message.getTimestamp());
1571                     } catch (IOException | UntrustedIdentityException | IllegalArgumentException e) {
1572                         e.printStackTrace();
1573                     }
1574                 }
1575
1576                 handleSignalServiceDataMessage(message, false, sender, account.getSelfAddress(), ignoreAttachments);
1577             }
1578             if (content.getSyncMessage().isPresent()) {
1579                 account.setMultiDevice(true);
1580                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1581                 if (syncMessage.getSent().isPresent()) {
1582                     SentTranscriptMessage message = syncMessage.getSent().get();
1583                     handleSignalServiceDataMessage(message.getMessage(), true, sender, message.getDestination().orNull(), ignoreAttachments);
1584                 }
1585                 if (syncMessage.getRequest().isPresent()) {
1586                     RequestMessage rm = syncMessage.getRequest().get();
1587                     if (rm.isContactsRequest()) {
1588                         try {
1589                             sendContacts();
1590                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1591                             e.printStackTrace();
1592                         }
1593                     }
1594                     if (rm.isGroupsRequest()) {
1595                         try {
1596                             sendGroups();
1597                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1598                             e.printStackTrace();
1599                         }
1600                     }
1601                     if (rm.isBlockedListRequest()) {
1602                         try {
1603                             sendBlockedList();
1604                         } catch (UntrustedIdentityException | IOException | IllegalArgumentException e) {
1605                             e.printStackTrace();
1606                         }
1607                     }
1608                     // TODO Handle rm.isConfigurationRequest();
1609                 }
1610                 if (syncMessage.getGroups().isPresent()) {
1611                     File tmpFile = null;
1612                     try {
1613                         tmpFile = IOUtils.createTempFile();
1614                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1615                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1616                             DeviceGroup g;
1617                             while ((g = s.read()) != null) {
1618                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1619                                 if (syncGroup == null) {
1620                                     syncGroup = new GroupInfo(g.getId());
1621                                 }
1622                                 if (g.getName().isPresent()) {
1623                                     syncGroup.name = g.getName().get();
1624                                 }
1625                                 syncGroup.addMembers(g.getMembers()
1626                                         .stream()
1627                                         .map(this::resolveSignalServiceAddress)
1628                                         .collect(Collectors.toSet()));
1629                                 if (!g.isActive()) {
1630                                     syncGroup.removeMember(account.getSelfAddress());
1631                                 } else {
1632                                     // Add ourself to the member set as it's marked as active
1633                                     syncGroup.addMembers(Collections.singleton(account.getSelfAddress()));
1634                                 }
1635                                 syncGroup.blocked = g.isBlocked();
1636                                 if (g.getColor().isPresent()) {
1637                                     syncGroup.color = g.getColor().get();
1638                                 }
1639
1640                                 if (g.getAvatar().isPresent()) {
1641                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1642                                 }
1643                                 syncGroup.inboxPosition = g.getInboxPosition().orNull();
1644                                 syncGroup.archived = g.isArchived();
1645                                 account.getGroupStore().updateGroup(syncGroup);
1646                             }
1647                         }
1648                     } catch (Exception e) {
1649                         e.printStackTrace();
1650                     } finally {
1651                         if (tmpFile != null) {
1652                             try {
1653                                 Files.delete(tmpFile.toPath());
1654                             } catch (IOException e) {
1655                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1656                             }
1657                         }
1658                     }
1659                 }
1660                 if (syncMessage.getBlockedList().isPresent()) {
1661                     final BlockedListMessage blockedListMessage = syncMessage.getBlockedList().get();
1662                     for (SignalServiceAddress address : blockedListMessage.getAddresses()) {
1663                         setContactBlocked(resolveSignalServiceAddress(address), true);
1664                     }
1665                     for (byte[] groupId : blockedListMessage.getGroupIds()) {
1666                         try {
1667                             setGroupBlocked(groupId, true);
1668                         } catch (GroupNotFoundException e) {
1669                             System.err.println("BlockedListMessage contained groupID that was not found in GroupStore: " + Base64.encodeBytes(groupId));
1670                         }
1671                     }
1672                 }
1673                 if (syncMessage.getContacts().isPresent()) {
1674                     File tmpFile = null;
1675                     try {
1676                         tmpFile = IOUtils.createTempFile();
1677                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1678                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1679                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1680                             if (contactsMessage.isComplete()) {
1681                                 account.getContactStore().clear();
1682                             }
1683                             DeviceContact c;
1684                             while ((c = s.read()) != null) {
1685                                 if (c.getAddress().matches(account.getSelfAddress()) && c.getProfileKey().isPresent()) {
1686                                     account.setProfileKey(c.getProfileKey().get());
1687                                 }
1688                                 final SignalServiceAddress address = resolveSignalServiceAddress(c.getAddress());
1689                                 ContactInfo contact = account.getContactStore().getContact(address);
1690                                 if (contact == null) {
1691                                     contact = new ContactInfo(address);
1692                                 }
1693                                 if (c.getName().isPresent()) {
1694                                     contact.name = c.getName().get();
1695                                 }
1696                                 if (c.getColor().isPresent()) {
1697                                     contact.color = c.getColor().get();
1698                                 }
1699                                 if (c.getProfileKey().isPresent()) {
1700                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get().serialize());
1701                                 }
1702                                 if (c.getVerified().isPresent()) {
1703                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1704                                     account.getSignalProtocolStore().setIdentityTrustLevel(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1705                                 }
1706                                 if (c.getExpirationTimer().isPresent()) {
1707                                     contact.messageExpirationTime = c.getExpirationTimer().get();
1708                                 }
1709                                 contact.blocked = c.isBlocked();
1710                                 contact.inboxPosition = c.getInboxPosition().orNull();
1711                                 contact.archived = c.isArchived();
1712                                 account.getContactStore().updateContact(contact);
1713
1714                                 if (c.getAvatar().isPresent()) {
1715                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1716                                 }
1717                             }
1718                         }
1719                     } catch (Exception e) {
1720                         e.printStackTrace();
1721                     } finally {
1722                         if (tmpFile != null) {
1723                             try {
1724                                 Files.delete(tmpFile.toPath());
1725                             } catch (IOException e) {
1726                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1727                             }
1728                         }
1729                     }
1730                 }
1731                 if (syncMessage.getVerified().isPresent()) {
1732                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1733                     account.getSignalProtocolStore().setIdentityTrustLevel(resolveSignalServiceAddress(verifiedMessage.getDestination()), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1734                 }
1735                 if (syncMessage.getConfiguration().isPresent()) {
1736                     // TODO
1737                 }
1738             }
1739         }
1740     }
1741
1742     private File getContactAvatarFile(String number) {
1743         return new File(avatarsPath, "contact-" + number);
1744     }
1745
1746     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1747         IOUtils.createPrivateDirectories(avatarsPath);
1748         if (attachment.isPointer()) {
1749             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1750             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1751         } else {
1752             SignalServiceAttachmentStream stream = attachment.asStream();
1753             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1754         }
1755     }
1756
1757     private File getGroupAvatarFile(byte[] groupId) {
1758         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1759     }
1760
1761     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1762         IOUtils.createPrivateDirectories(avatarsPath);
1763         if (attachment.isPointer()) {
1764             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1765             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1766         } else {
1767             SignalServiceAttachmentStream stream = attachment.asStream();
1768             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1769         }
1770     }
1771
1772     public File getAttachmentFile(long attachmentId) {
1773         return new File(attachmentsPath, attachmentId + "");
1774     }
1775
1776     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1777         IOUtils.createPrivateDirectories(attachmentsPath);
1778         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1779     }
1780
1781     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1782         if (storePreview && pointer.getPreview().isPresent()) {
1783             File previewFile = new File(outputFile + ".preview");
1784             try (OutputStream output = new FileOutputStream(previewFile)) {
1785                 byte[] preview = pointer.getPreview().get();
1786                 output.write(preview, 0, preview.length);
1787             } catch (FileNotFoundException e) {
1788                 e.printStackTrace();
1789                 return null;
1790             }
1791         }
1792
1793         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1794
1795         File tmpFile = IOUtils.createTempFile();
1796         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1797             try (OutputStream output = new FileOutputStream(outputFile)) {
1798                 byte[] buffer = new byte[4096];
1799                 int read;
1800
1801                 while ((read = input.read(buffer)) != -1) {
1802                     output.write(buffer, 0, read);
1803                 }
1804             } catch (FileNotFoundException e) {
1805                 e.printStackTrace();
1806                 return null;
1807             }
1808         } finally {
1809             try {
1810                 Files.delete(tmpFile.toPath());
1811             } catch (IOException e) {
1812                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1813             }
1814         }
1815         return outputFile;
1816     }
1817
1818     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1819         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1820         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1821     }
1822
1823     @Override
1824     public boolean isRemote() {
1825         return false;
1826     }
1827
1828     private void sendGroups() throws IOException, UntrustedIdentityException {
1829         File groupsFile = IOUtils.createTempFile();
1830
1831         try {
1832             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1833                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1834                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1835                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1836                             new ArrayList<>(record.getMembers()), createGroupAvatarAttachment(record.groupId),
1837                             record.isMember(account.getSelfAddress()), Optional.of(record.messageExpirationTime),
1838                             Optional.fromNullable(record.color), record.blocked, Optional.fromNullable(record.inboxPosition), record.archived));
1839                 }
1840             }
1841
1842             if (groupsFile.exists() && groupsFile.length() > 0) {
1843                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1844                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1845                             .withStream(groupsFileStream)
1846                             .withContentType("application/octet-stream")
1847                             .withLength(groupsFile.length())
1848                             .build();
1849
1850                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1851                 }
1852             }
1853         } finally {
1854             try {
1855                 Files.delete(groupsFile.toPath());
1856             } catch (IOException e) {
1857                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1858             }
1859         }
1860     }
1861
1862     public void sendContacts() throws IOException, UntrustedIdentityException {
1863         File contactsFile = IOUtils.createTempFile();
1864
1865         try {
1866             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1867                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1868                 for (ContactInfo record : account.getContactStore().getContacts()) {
1869                     VerifiedMessage verifiedMessage = null;
1870                     JsonIdentityKeyStore.Identity currentIdentity = account.getSignalProtocolStore().getIdentity(record.getAddress());
1871                     if (currentIdentity != null) {
1872                         verifiedMessage = new VerifiedMessage(record.getAddress(), currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1873                     }
1874
1875                     ProfileKey profileKey = null;
1876                     try {
1877                         profileKey = record.profileKey == null ? null : new ProfileKey(Base64.decode(record.profileKey));
1878                     } catch (InvalidInputException ignored) {
1879                     }
1880                     out.write(new DeviceContact(record.getAddress(), Optional.fromNullable(record.name),
1881                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1882                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), record.blocked,
1883                             Optional.of(record.messageExpirationTime),
1884                             Optional.fromNullable(record.inboxPosition), record.archived));
1885                 }
1886
1887                 if (account.getProfileKey() != null) {
1888                     // Send our own profile key as well
1889                     out.write(new DeviceContact(account.getSelfAddress(),
1890                             Optional.absent(), Optional.absent(),
1891                             Optional.absent(), Optional.absent(),
1892                             Optional.of(account.getProfileKey()),
1893                             false, Optional.absent(), Optional.absent(), false));
1894                 }
1895             }
1896
1897             if (contactsFile.exists() && contactsFile.length() > 0) {
1898                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1899                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1900                             .withStream(contactsFileStream)
1901                             .withContentType("application/octet-stream")
1902                             .withLength(contactsFile.length())
1903                             .build();
1904
1905                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1906                 }
1907             }
1908         } finally {
1909             try {
1910                 Files.delete(contactsFile.toPath());
1911             } catch (IOException e) {
1912                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1913             }
1914         }
1915     }
1916
1917     private void sendBlockedList() throws IOException, UntrustedIdentityException {
1918         List<SignalServiceAddress> addresses = new ArrayList<>();
1919         for (ContactInfo record : account.getContactStore().getContacts()) {
1920             if (record.blocked) {
1921                 addresses.add(record.getAddress());
1922             }
1923         }
1924         List<byte[]> groupIds = new ArrayList<>();
1925         for (GroupInfo record : account.getGroupStore().getGroups()) {
1926             if (record.blocked) {
1927                 groupIds.add(record.groupId);
1928             }
1929         }
1930         sendSyncMessage(SignalServiceSyncMessage.forBlocked(new BlockedListMessage(addresses, groupIds)));
1931     }
1932
1933     private void sendVerifiedMessage(SignalServiceAddress destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1934         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1935         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1936     }
1937
1938     public List<ContactInfo> getContacts() {
1939         return account.getContactStore().getContacts();
1940     }
1941
1942     public ContactInfo getContact(String number) {
1943         return account.getContactStore().getContact(Util.getSignalServiceAddressFromIdentifier(number));
1944     }
1945
1946     public GroupInfo getGroup(byte[] groupId) {
1947         return account.getGroupStore().getGroup(groupId);
1948     }
1949
1950     public List<JsonIdentityKeyStore.Identity> getIdentities() {
1951         return account.getSignalProtocolStore().getIdentities();
1952     }
1953
1954     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) throws InvalidNumberException {
1955         return account.getSignalProtocolStore().getIdentities(canonicalizeAndResolveSignalServiceAddress(number));
1956     }
1957
1958     /**
1959      * Trust this the identity with this fingerprint
1960      *
1961      * @param name        username of the identity
1962      * @param fingerprint Fingerprint
1963      */
1964     public boolean trustIdentityVerified(String name, byte[] fingerprint) throws InvalidNumberException {
1965         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1966         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1967         if (ids == null) {
1968             return false;
1969         }
1970         for (JsonIdentityKeyStore.Identity id : ids) {
1971             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1972                 continue;
1973             }
1974
1975             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1976             try {
1977                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1978             } catch (IOException | UntrustedIdentityException e) {
1979                 e.printStackTrace();
1980             }
1981             account.save();
1982             return true;
1983         }
1984         return false;
1985     }
1986
1987     /**
1988      * Trust this the identity with this safety number
1989      *
1990      * @param name         username of the identity
1991      * @param safetyNumber Safety number
1992      */
1993     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) throws InvalidNumberException {
1994         SignalServiceAddress address = canonicalizeAndResolveSignalServiceAddress(name);
1995         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
1996         if (ids == null) {
1997             return false;
1998         }
1999         for (JsonIdentityKeyStore.Identity id : ids) {
2000             if (!safetyNumber.equals(computeSafetyNumber(address, id.getIdentityKey()))) {
2001                 continue;
2002             }
2003
2004             account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2005             try {
2006                 sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
2007             } catch (IOException | UntrustedIdentityException e) {
2008                 e.printStackTrace();
2009             }
2010             account.save();
2011             return true;
2012         }
2013         return false;
2014     }
2015
2016     /**
2017      * Trust all keys of this identity without verification
2018      *
2019      * @param name username of the identity
2020      */
2021     public boolean trustIdentityAllKeys(String name) {
2022         SignalServiceAddress address = resolveSignalServiceAddress(name);
2023         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(address);
2024         if (ids == null) {
2025             return false;
2026         }
2027         for (JsonIdentityKeyStore.Identity id : ids) {
2028             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
2029                 account.getSignalProtocolStore().setIdentityTrustLevel(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2030                 try {
2031                     sendVerifiedMessage(address, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
2032                 } catch (IOException | UntrustedIdentityException e) {
2033                     e.printStackTrace();
2034                 }
2035             }
2036         }
2037         account.save();
2038         return true;
2039     }
2040
2041     public String computeSafetyNumber(SignalServiceAddress theirAddress, IdentityKey theirIdentityKey) {
2042         return Utils.computeSafetyNumber(account.getSelfAddress(), getIdentity(), theirAddress, theirIdentityKey);
2043     }
2044
2045     public SignalServiceAddress canonicalizeAndResolveSignalServiceAddress(String identifier) throws InvalidNumberException {
2046         String canonicalizedNumber = UuidUtil.isUuid(identifier) ? identifier : Util.canonicalizeNumber(identifier, account.getUsername());
2047         return resolveSignalServiceAddress(canonicalizedNumber);
2048     }
2049
2050     public SignalServiceAddress resolveSignalServiceAddress(String identifier) {
2051         SignalServiceAddress address = Util.getSignalServiceAddressFromIdentifier(identifier);
2052
2053         return resolveSignalServiceAddress(address);
2054     }
2055
2056     public SignalServiceAddress resolveSignalServiceAddress(SignalServiceAddress address) {
2057         if (address.matches(account.getSelfAddress())) {
2058             return account.getSelfAddress();
2059         }
2060
2061         return account.getRecipientStore().resolveServiceAddress(address);
2062     }
2063
2064     public interface ReceiveMessageHandler {
2065
2066         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
2067     }
2068 }