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