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

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