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

   1 /*
   2   Copyright (C) 2015-2018 AsamK
   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.*;
  21 import org.asamk.signal.storage.SignalAccount;
  22 import org.asamk.signal.storage.contacts.ContactInfo;
  23 import org.asamk.signal.storage.groups.GroupInfo;
  24 import org.asamk.signal.storage.groups.JsonGroupStore;
  25 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  26 import org.asamk.signal.storage.threads.ThreadInfo;
  27 import org.asamk.signal.util.IOUtils;
  28 import org.asamk.signal.util.Util;
  29 import org.signal.libsignal.metadata.*;
  30 import org.whispersystems.libsignal.*;
  31 import org.whispersystems.libsignal.ecc.Curve;
  32 import org.whispersystems.libsignal.ecc.ECKeyPair;
  33 import org.whispersystems.libsignal.ecc.ECPublicKey;
  34 import org.whispersystems.libsignal.state.PreKeyRecord;
  35 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  36 import org.whispersystems.libsignal.util.KeyHelper;
  37 import org.whispersystems.libsignal.util.Medium;
  38 import org.whispersystems.libsignal.util.guava.Optional;
  39 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  40 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  41 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  42 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  43 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  44 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  45 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  46 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  47 import org.whispersystems.signalservice.api.messages.*;
  48 import org.whispersystems.signalservice.api.messages.multidevice.*;
  49 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  50 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  51 import org.whispersystems.signalservice.api.push.exceptions.AuthorizationFailedException;
  52 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  53 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  54 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  55 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  56 import org.whispersystems.signalservice.api.util.SleepTimer;
  57 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
  58 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
  59 import org.whispersystems.signalservice.internal.util.Base64;
  60
  61 import java.io.*;
  62 import java.net.URI;
  63 import java.nio.file.Files;
  64 import java.nio.file.Paths;
  65 import java.nio.file.StandardCopyOption;
  66 import java.util.*;
  67 import java.util.concurrent.TimeUnit;
  68 import java.util.concurrent.TimeoutException;
  69
  70 public class Manager implements Signal {
  71
  72     private final String settingsPath;
  73     private final String dataPath;
  74     private final String attachmentsPath;
  75     private final String avatarsPath;
  76     private final SleepTimer timer = new UptimeSleepTimer();
  77
  78     private SignalAccount account;
  79     private String username;
  80     private SignalServiceAccountManager accountManager;
  81     private SignalServiceMessagePipe messagePipe = null;
  82     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
  83
  84     public Manager(String username, String settingsPath) {
  85         this.username = username;
  86         this.settingsPath = settingsPath;
  87         this.dataPath = this.settingsPath + "/data";
  88         this.attachmentsPath = this.settingsPath + "/attachments";
  89         this.avatarsPath = this.settingsPath + "/avatars";
  90
  91     }
  92
  93     public String getUsername() {
  94         return username;
  95     }
  96
  97     private IdentityKey getIdentity() {
  98         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
  99     }
 100
 101     public int getDeviceId() {
 102         return account.getDeviceId();
 103     }
 104
 105     private String getMessageCachePath() {
 106         return this.dataPath + "/" + username + ".d/msg-cache";
 107     }
 108
 109     private String getMessageCachePath(String sender) {
 110         return getMessageCachePath() + "/" + sender.replace("/", "_");
 111     }
 112
 113     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 114         String cachePath = getMessageCachePath(sender);
 115         IOUtils.createPrivateDirectories(cachePath);
 116         return new File(cachePath + "/" + now + "_" + timestamp);
 117     }
 118
 119     public boolean userHasKeys() {
 120         return account != null && account.getSignalProtocolStore() != null;
 121     }
 122
 123     public void init() throws IOException {
 124         if (!SignalAccount.userExists(dataPath, username)) {
 125             return;
 126         }
 127         account = SignalAccount.load(dataPath, username);
 128
 129         migrateLegacyConfigs();
 130
 131         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 132         try {
 133             if (account.isRegistered() && accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 134                 refreshPreKeys();
 135                 account.save();
 136             }
 137         } catch (AuthorizationFailedException e) {
 138             System.err.println("Authorization failed, was the number registered elsewhere?");
 139         }
 140     }
 141
 142     private void migrateLegacyConfigs() {
 143         // Copy group avatars that were previously stored in the attachments folder
 144         // to the new avatar folder
 145         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 146             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 147                 File avatarFile = getGroupAvatarFile(g.groupId);
 148                 File attachmentFile = getAttachmentFile(g.getAvatarId());
 149                 if (!avatarFile.exists() && attachmentFile.exists()) {
 150                     try {
 151                         IOUtils.createPrivateDirectories(avatarsPath);
 152                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 153                     } catch (Exception e) {
 154                         // Ignore
 155                     }
 156                 }
 157             }
 158             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 159             account.save();
 160         }
 161         if (account.getProfileKey() == null) {
 162             // Old config file, creating new profile key
 163             account.setProfileKey(KeyUtils.createProfileKey());
 164         }
 165     }
 166
 167     private void createNewIdentity() throws IOException {
 168         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 169         int registrationId = KeyHelper.generateRegistrationId(false);
 170         if (username == null) {
 171             account = SignalAccount.createTemporaryAccount(identityKey, registrationId);
 172         } else {
 173             byte[] profileKey = KeyUtils.createProfileKey();
 174             account = SignalAccount.create(dataPath, username, identityKey, registrationId, profileKey);
 175             account.save();
 176         }
 177     }
 178
 179     public boolean isRegistered() {
 180         return account != null && account.isRegistered();
 181     }
 182
 183     public void register(boolean voiceVerification) throws IOException {
 184         if (account == null) {
 185             createNewIdentity();
 186         }
 187         account.setPassword(KeyUtils.createPassword());
 188         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, account.getUsername(), account.getPassword(), BaseConfig.USER_AGENT, timer);
 189
 190         if (voiceVerification)
 191             accountManager.requestVoiceVerificationCode();
 192         else
 193             accountManager.requestSmsVerificationCode();
 194
 195         account.setRegistered(false);
 196         account.save();
 197     }
 198
 199     public void updateAccountAttributes() throws IOException {
 200         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), getSelfUnidentifiedAccessKey(), false);
 201     }
 202
 203     public void unregister() throws IOException {
 204         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 205         // If this is the master device, other users can't send messages to this number anymore.
 206         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 207         accountManager.setGcmId(Optional.<String>absent());
 208     }
 209
 210     public String getDeviceLinkUri() throws TimeoutException, IOException {
 211         if (account == null) {
 212             createNewIdentity();
 213         }
 214         account.setPassword(KeyUtils.createPassword());
 215         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, username, account.getPassword(), BaseConfig.USER_AGENT, timer);
 216         String uuid = accountManager.getNewDeviceUuid();
 217
 218         return Utils.createDeviceLinkUri(new Utils.DeviceLinkInfo(uuid, getIdentity().getPublicKey()));
 219     }
 220
 221     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 222         account.setSignalingKey(KeyUtils.createSignalingKey());
 223         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 224
 225         username = ret.getNumber();
 226         // TODO do this check before actually registering
 227         if (SignalAccount.userExists(dataPath, username)) {
 228             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 229         }
 230
 231         // Create new account with the synced identity
 232         byte[] profileKey = ret.getProfileKey();
 233         if (profileKey == null) {
 234             profileKey = KeyUtils.createProfileKey();
 235         }
 236         account = SignalAccount.createLinkedAccount(dataPath, username, account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 237
 238         refreshPreKeys();
 239
 240         requestSyncGroups();
 241         requestSyncContacts();
 242         requestSyncBlocked();
 243         requestSyncConfiguration();
 244
 245         account.save();
 246     }
 247
 248     public List<DeviceInfo> getLinkedDevices() throws IOException {
 249         List<DeviceInfo> devices = accountManager.getDevices();
 250         account.setMultiDevice(devices.size() > 1);
 251         return devices;
 252     }
 253
 254     public void removeLinkedDevices(int deviceId) throws IOException {
 255         accountManager.removeDevice(deviceId);
 256     }
 257
 258     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 259         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 260
 261         addDevice(info.deviceIdentifier, info.deviceKey);
 262     }
 263
 264     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 265         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 266         String verificationCode = accountManager.getNewDeviceVerificationCode();
 267
 268         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey()), verificationCode);
 269         account.setMultiDevice(true);
 270     }
 271
 272     private List<PreKeyRecord> generatePreKeys() {
 273         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 274
 275         final int offset = account.getPreKeyIdOffset();
 276         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 277             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 278             ECKeyPair keyPair = Curve.generateKeyPair();
 279             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 280
 281             records.add(record);
 282         }
 283
 284         account.addPreKeys(records);
 285         account.save();
 286
 287         return records;
 288     }
 289
 290     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 291         try {
 292             ECKeyPair keyPair = Curve.generateKeyPair();
 293             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 294             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 295
 296             account.addSignedPreKey(record);
 297             account.save();
 298
 299             return record;
 300         } catch (InvalidKeyException e) {
 301             throw new AssertionError(e);
 302         }
 303     }
 304
 305     public void verifyAccount(String verificationCode, String pin) throws IOException {
 306         verificationCode = verificationCode.replace("-", "");
 307         account.setSignalingKey(KeyUtils.createSignalingKey());
 308         // TODO make unrestricted unidentified access configurable
 309         accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, getSelfUnidentifiedAccessKey(), false);
 310
 311         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 312         account.setRegistered(true);
 313         account.setRegistrationLockPin(pin);
 314
 315         refreshPreKeys();
 316         account.save();
 317     }
 318
 319     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 320         accountManager.setPin(pin);
 321         if (pin.isPresent()) {
 322             account.setRegistrationLockPin(pin.get());
 323         } else {
 324             account.setRegistrationLockPin(null);
 325         }
 326         account.save();
 327     }
 328
 329     private void refreshPreKeys() throws IOException {
 330         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 331         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 332         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 333
 334         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 335     }
 336
 337     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 338         File file = getGroupAvatarFile(groupId);
 339         if (!file.exists()) {
 340             return Optional.absent();
 341         }
 342
 343         return Optional.of(Utils.createAttachment(file));
 344     }
 345
 346     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 347         File file = getContactAvatarFile(number);
 348         if (!file.exists()) {
 349             return Optional.absent();
 350         }
 351
 352         return Optional.of(Utils.createAttachment(file));
 353     }
 354
 355     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 356         GroupInfo g = account.getGroupStore().getGroup(groupId);
 357         if (g == null) {
 358             throw new GroupNotFoundException(groupId);
 359         }
 360         for (String member : g.members) {
 361             if (member.equals(this.username)) {
 362                 return g;
 363             }
 364         }
 365         throw new NotAGroupMemberException(groupId, g.name);
 366     }
 367
 368     public List<GroupInfo> getGroups() {
 369         return account.getGroupStore().getGroups();
 370     }
 371
 372     @Override
 373     public void sendGroupMessage(String messageText, List<String> attachments,
 374                                  byte[] groupId)
 375             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 376         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 377         if (attachments != null) {
 378             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 379         }
 380         if (groupId != null) {
 381             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 382                     .withId(groupId)
 383                     .build();
 384             messageBuilder.asGroupMessage(group);
 385         }
 386         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 387         if (thread != null) {
 388             messageBuilder.withExpiration(thread.messageExpirationTime);
 389         }
 390
 391         final GroupInfo g = getGroupForSending(groupId);
 392
 393         // Don't send group message to ourself
 394         final List<String> membersSend = new ArrayList<>(g.members);
 395         membersSend.remove(this.username);
 396         sendMessageLegacy(messageBuilder, membersSend);
 397     }
 398
 399     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 400         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 401                 .withId(groupId)
 402                 .build();
 403
 404         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 405                 .asGroupMessage(group);
 406
 407         final GroupInfo g = getGroupForSending(groupId);
 408         g.members.remove(this.username);
 409         account.getGroupStore().updateGroup(g);
 410
 411         sendMessageLegacy(messageBuilder, g.members);
 412     }
 413
 414     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 415         GroupInfo g;
 416         if (groupId == null) {
 417             // Create new group
 418             g = new GroupInfo(KeyUtils.createGroupId());
 419             g.members.add(username);
 420         } else {
 421             g = getGroupForSending(groupId);
 422         }
 423
 424         if (name != null) {
 425             g.name = name;
 426         }
 427
 428         if (members != null) {
 429             Set<String> newMembers = new HashSet<>();
 430             for (String member : members) {
 431                 try {
 432                     member = Utils.canonicalizeNumber(member, username);
 433                 } catch (InvalidNumberException e) {
 434                     System.err.println("Failed to add member \"" + member + "\" to group: " + e.getMessage());
 435                     System.err.println("Aborting…");
 436                     System.exit(1);
 437                 }
 438                 if (g.members.contains(member)) {
 439                     continue;
 440                 }
 441                 newMembers.add(member);
 442                 g.members.add(member);
 443             }
 444             final List<ContactTokenDetails> contacts = accountManager.getContacts(newMembers);
 445             if (contacts.size() != newMembers.size()) {
 446                 // Some of the new members are not registered on Signal
 447                 for (ContactTokenDetails contact : contacts) {
 448                     newMembers.remove(contact.getNumber());
 449                 }
 450                 System.err.println("Failed to add members " + Util.join(", ", newMembers) + " to group: Not registered on Signal");
 451                 System.err.println("Aborting…");
 452                 System.exit(1);
 453             }
 454         }
 455
 456         if (avatarFile != null) {
 457             IOUtils.createPrivateDirectories(avatarsPath);
 458             File aFile = getGroupAvatarFile(g.groupId);
 459             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 460         }
 461
 462         account.getGroupStore().updateGroup(g);
 463
 464         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 465
 466         // Don't send group message to ourself
 467         final List<String> membersSend = new ArrayList<>(g.members);
 468         membersSend.remove(this.username);
 469         sendMessageLegacy(messageBuilder, membersSend);
 470         return g.groupId;
 471     }
 472
 473     private void sendUpdateGroupMessage(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 474         if (groupId == null) {
 475             return;
 476         }
 477         GroupInfo g = getGroupForSending(groupId);
 478
 479         if (!g.members.contains(recipient)) {
 480             return;
 481         }
 482
 483         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 484
 485         // Send group message only to the recipient who requested it
 486         final List<String> membersSend = new ArrayList<>();
 487         membersSend.add(recipient);
 488         sendMessageLegacy(messageBuilder, membersSend);
 489     }
 490
 491     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 492         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 493                 .withId(g.groupId)
 494                 .withName(g.name)
 495                 .withMembers(new ArrayList<>(g.members));
 496
 497         File aFile = getGroupAvatarFile(g.groupId);
 498         if (aFile.exists()) {
 499             try {
 500                 group.withAvatar(Utils.createAttachment(aFile));
 501             } catch (IOException e) {
 502                 throw new AttachmentInvalidException(aFile.toString(), e);
 503             }
 504         }
 505
 506         return SignalServiceDataMessage.newBuilder()
 507                 .asGroupMessage(group.build());
 508     }
 509
 510     private void sendGroupInfoRequest(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 511         if (groupId == null) {
 512             return;
 513         }
 514
 515         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 516                 .withId(groupId);
 517
 518         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 519                 .asGroupMessage(group.build());
 520
 521         // Send group info request message to the recipient who sent us a message with this groupId
 522         final List<String> membersSend = new ArrayList<>();
 523         membersSend.add(recipient);
 524         sendMessageLegacy(messageBuilder, membersSend);
 525     }
 526
 527     @Override
 528     public void sendMessage(String message, List<String> attachments, String recipient)
 529             throws EncapsulatedExceptions, AttachmentInvalidException, IOException {
 530         List<String> recipients = new ArrayList<>(1);
 531         recipients.add(recipient);
 532         sendMessage(message, attachments, recipients);
 533     }
 534
 535     @Override
 536     public void sendMessage(String messageText, List<String> attachments,
 537                             List<String> recipients)
 538             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 539         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 540         if (attachments != null) {
 541             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 542         }
 543         sendMessageLegacy(messageBuilder, recipients);
 544     }
 545
 546     @Override
 547     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions {
 548         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 549                 .asEndSessionMessage();
 550
 551         sendMessageLegacy(messageBuilder, recipients);
 552     }
 553
 554     @Override
 555     public String getContactName(String number) {
 556         ContactInfo contact = account.getContactStore().getContact(number);
 557         if (contact == null) {
 558             return "";
 559         } else {
 560             return contact.name;
 561         }
 562     }
 563
 564     @Override
 565     public void setContactName(String number, String name) {
 566         ContactInfo contact = account.getContactStore().getContact(number);
 567         if (contact == null) {
 568             contact = new ContactInfo();
 569             contact.number = number;
 570             System.err.println("Add contact " + number + " named " + name);
 571         } else {
 572             System.err.println("Updating contact " + number + " name " + contact.name + " -> " + name);
 573         }
 574         contact.name = name;
 575         account.getContactStore().updateContact(contact);
 576         account.save();
 577     }
 578
 579     @Override
 580     public List<byte[]> getGroupIds() {
 581         List<GroupInfo> groups = getGroups();
 582         List<byte[]> ids = new ArrayList<>(groups.size());
 583         for (GroupInfo group : groups) {
 584             ids.add(group.groupId);
 585         }
 586         return ids;
 587     }
 588
 589     @Override
 590     public String getGroupName(byte[] groupId) {
 591         GroupInfo group = getGroup(groupId);
 592         if (group == null) {
 593             return "";
 594         } else {
 595             return group.name;
 596         }
 597     }
 598
 599     @Override
 600     public List<String> getGroupMembers(byte[] groupId) {
 601         GroupInfo group = getGroup(groupId);
 602         if (group == null) {
 603             return new ArrayList<>();
 604         } else {
 605             return new ArrayList<>(group.members);
 606         }
 607     }
 608
 609     @Override
 610     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 611         if (groupId.length == 0) {
 612             groupId = null;
 613         }
 614         if (name.isEmpty()) {
 615             name = null;
 616         }
 617         if (members.size() == 0) {
 618             members = null;
 619         }
 620         if (avatar.isEmpty()) {
 621             avatar = null;
 622         }
 623         return sendUpdateGroupMessage(groupId, name, members, avatar);
 624     }
 625
 626     /**
 627      * Change the expiration timer for a thread (number of groupId)
 628      *
 629      * @param numberOrGroupId
 630      * @param messageExpirationTimer
 631      */
 632     public void setExpirationTimer(String numberOrGroupId, int messageExpirationTimer) {
 633         ThreadInfo thread = account.getThreadStore().getThread(numberOrGroupId);
 634         thread.messageExpirationTime = messageExpirationTimer;
 635         account.getThreadStore().updateThread(thread);
 636     }
 637
 638     private void requestSyncGroups() throws IOException {
 639         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 640         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 641         try {
 642             sendSyncMessage(message);
 643         } catch (UntrustedIdentityException e) {
 644             e.printStackTrace();
 645         }
 646     }
 647
 648     private void requestSyncContacts() throws IOException {
 649         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 650         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 651         try {
 652             sendSyncMessage(message);
 653         } catch (UntrustedIdentityException e) {
 654             e.printStackTrace();
 655         }
 656     }
 657
 658     private void requestSyncBlocked() throws IOException {
 659         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 660         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 661         try {
 662             sendSyncMessage(message);
 663         } catch (UntrustedIdentityException e) {
 664             e.printStackTrace();
 665         }
 666     }
 667
 668     private void requestSyncConfiguration() throws IOException {
 669         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 670         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 671         try {
 672             sendSyncMessage(message);
 673         } catch (UntrustedIdentityException e) {
 674             e.printStackTrace();
 675         }
 676     }
 677
 678     private byte[] getSelfUnidentifiedAccessKey() {
 679         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 680     }
 681
 682     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 683         // TODO implement
 684         return null;
 685     }
 686
 687     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 688         // TODO implement
 689         return Optional.absent();
 690     }
 691
 692     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
 693         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
 694         for (SignalServiceAddress recipient : recipients) {
 695             result.add(Optional.<UnidentifiedAccessPair>absent());
 696         }
 697         return result;
 698     }
 699
 700     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
 701         // TODO implement
 702         return Optional.absent();
 703     }
 704
 705     private void sendSyncMessage(SignalServiceSyncMessage message)
 706             throws IOException, UntrustedIdentityException {
 707         SignalServiceMessageSender messageSender = new SignalServiceMessageSender(BaseConfig.serviceConfiguration, username, account.getPassword(),
 708                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 709         try {
 710             messageSender.sendMessage(message, getAccessForSync());
 711         } catch (UntrustedIdentityException e) {
 712             account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 713             throw e;
 714         }
 715     }
 716
 717     /**
 718      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
 719      */
 720     private void sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 721             throws EncapsulatedExceptions, IOException {
 722         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
 723
 724         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
 725         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
 726         List<NetworkFailureException> networkExceptions = new LinkedList<>();
 727
 728         for (SendMessageResult result : results) {
 729             if (result.isUnregisteredFailure()) {
 730                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getNumber(), null));
 731             } else if (result.isNetworkFailure()) {
 732                 networkExceptions.add(new NetworkFailureException(result.getAddress().getNumber(), null));
 733             } else if (result.getIdentityFailure() != null) {
 734                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getNumber(), result.getIdentityFailure().getIdentityKey()));
 735             }
 736         }
 737         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
 738             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
 739         }
 740     }
 741
 742     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 743             throws IOException {
 744         Set<SignalServiceAddress> recipientsTS = Utils.getSignalServiceAddresses(recipients, username);
 745         if (recipientsTS == null) {
 746             account.save();
 747             return Collections.emptyList();
 748         }
 749
 750         SignalServiceDataMessage message = null;
 751         try {
 752             SignalServiceMessageSender messageSender = new SignalServiceMessageSender(BaseConfig.serviceConfiguration, username, account.getPassword(),
 753                     account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 754
 755             message = messageBuilder.build();
 756             if (message.getGroupInfo().isPresent()) {
 757                 try {
 758                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipientsTS), getAccessFor(recipientsTS), message);
 759                     for (SendMessageResult r : result) {
 760                         if (r.getIdentityFailure() != null) {
 761                             account.getSignalProtocolStore().saveIdentity(r.getAddress().getNumber(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
 762                         }
 763                     }
 764                     return result;
 765                 } catch (UntrustedIdentityException e) {
 766                     account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 767                     return Collections.emptyList();
 768                 }
 769             } else {
 770                 // Send to all individually, so sync messages are sent correctly
 771                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 772                 for (SignalServiceAddress address : recipientsTS) {
 773                     ThreadInfo thread = account.getThreadStore().getThread(address.getNumber());
 774                     if (thread != null) {
 775                         messageBuilder.withExpiration(thread.messageExpirationTime);
 776                     } else {
 777                         messageBuilder.withExpiration(0);
 778                     }
 779                     message = messageBuilder.build();
 780                     try {
 781                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
 782                         results.add(result);
 783                     } catch (UntrustedIdentityException e) {
 784                         account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 785                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
 786                     }
 787                 }
 788                 return results;
 789             }
 790         } finally {
 791             if (message != null && message.isEndSession()) {
 792                 for (SignalServiceAddress recipient : recipientsTS) {
 793                     handleEndSession(recipient.getNumber());
 794                 }
 795             }
 796             account.save();
 797         }
 798     }
 799
 800     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, ProtocolUntrustedIdentityException, SelfSendException {
 801         SignalServiceCipher cipher = new SignalServiceCipher(new SignalServiceAddress(username), account.getSignalProtocolStore(), Utils.getCertificateValidator());
 802         try {
 803             return cipher.decrypt(envelope);
 804         } catch (ProtocolUntrustedIdentityException e) {
 805             // TODO We don't get the new untrusted identity from ProtocolUntrustedIdentityException anymore ... we need to get it from somewhere else
 806 //            account.getSignalProtocolStore().saveIdentity(e.getSender(), e.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
 807             throw e;
 808         }
 809     }
 810
 811     private void handleEndSession(String source) {
 812         account.getSignalProtocolStore().deleteAllSessions(source);
 813     }
 814
 815     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, String source, String destination, boolean ignoreAttachments) {
 816         String threadId;
 817         if (message.getGroupInfo().isPresent()) {
 818             SignalServiceGroup groupInfo = message.getGroupInfo().get();
 819             threadId = Base64.encodeBytes(groupInfo.getGroupId());
 820             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
 821             switch (groupInfo.getType()) {
 822                 case UPDATE:
 823                     if (group == null) {
 824                         group = new GroupInfo(groupInfo.getGroupId());
 825                     }
 826
 827                     if (groupInfo.getAvatar().isPresent()) {
 828                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
 829                         if (avatar.isPointer()) {
 830                             try {
 831                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
 832                             } catch (IOException | InvalidMessageException e) {
 833                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
 834                             }
 835                         }
 836                     }
 837
 838                     if (groupInfo.getName().isPresent()) {
 839                         group.name = groupInfo.getName().get();
 840                     }
 841
 842                     if (groupInfo.getMembers().isPresent()) {
 843                         group.members.addAll(groupInfo.getMembers().get());
 844                     }
 845
 846                     account.getGroupStore().updateGroup(group);
 847                     break;
 848                 case DELIVER:
 849                     if (group == null) {
 850                         try {
 851                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 852                         } catch (IOException | EncapsulatedExceptions e) {
 853                             e.printStackTrace();
 854                         }
 855                     }
 856                     break;
 857                 case QUIT:
 858                     if (group == null) {
 859                         try {
 860                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 861                         } catch (IOException | EncapsulatedExceptions e) {
 862                             e.printStackTrace();
 863                         }
 864                     } else {
 865                         group.members.remove(source);
 866                         account.getGroupStore().updateGroup(group);
 867                     }
 868                     break;
 869                 case REQUEST_INFO:
 870                     if (group != null) {
 871                         try {
 872                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
 873                         } catch (IOException | EncapsulatedExceptions e) {
 874                             e.printStackTrace();
 875                         } catch (NotAGroupMemberException e) {
 876                             // We have left this group, so don't send a group update message
 877                         }
 878                     }
 879                     break;
 880             }
 881         } else {
 882             if (isSync) {
 883                 threadId = destination;
 884             } else {
 885                 threadId = source;
 886             }
 887         }
 888         if (message.isEndSession()) {
 889             handleEndSession(isSync ? destination : source);
 890         }
 891         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
 892             ThreadInfo thread = account.getThreadStore().getThread(threadId);
 893             if (thread == null) {
 894                 thread = new ThreadInfo();
 895                 thread.id = threadId;
 896             }
 897             if (thread.messageExpirationTime != message.getExpiresInSeconds()) {
 898                 thread.messageExpirationTime = message.getExpiresInSeconds();
 899                 account.getThreadStore().updateThread(thread);
 900             }
 901         }
 902         if (message.getAttachments().isPresent() && !ignoreAttachments) {
 903             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
 904                 if (attachment.isPointer()) {
 905                     try {
 906                         retrieveAttachment(attachment.asPointer());
 907                     } catch (IOException | InvalidMessageException e) {
 908                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
 909                     }
 910                 }
 911             }
 912         }
 913         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
 914             if (source.equals(username)) {
 915                 this.account.setProfileKey(message.getProfileKey().get());
 916             }
 917             ContactInfo contact = account.getContactStore().getContact(source);
 918             if (contact == null) {
 919                 contact = new ContactInfo();
 920                 contact.number = source;
 921             }
 922             contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
 923         }
 924     }
 925
 926     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
 927         final File cachePath = new File(getMessageCachePath());
 928         if (!cachePath.exists()) {
 929             return;
 930         }
 931         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
 932             if (!dir.isDirectory()) {
 933                 continue;
 934             }
 935
 936             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
 937                 if (!fileEntry.isFile()) {
 938                     continue;
 939                 }
 940                 SignalServiceEnvelope envelope;
 941                 try {
 942                     envelope = Utils.loadEnvelope(fileEntry);
 943                     if (envelope == null) {
 944                         continue;
 945                     }
 946                 } catch (IOException e) {
 947                     e.printStackTrace();
 948                     continue;
 949                 }
 950                 SignalServiceContent content = null;
 951                 if (!envelope.isReceipt()) {
 952                     try {
 953                         content = decryptMessage(envelope);
 954                     } catch (Exception e) {
 955                         continue;
 956                     }
 957                     handleMessage(envelope, content, ignoreAttachments);
 958                 }
 959                 account.save();
 960                 handler.handleMessage(envelope, content, null);
 961                 try {
 962                     Files.delete(fileEntry.toPath());
 963                 } catch (IOException e) {
 964                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
 965                 }
 966             }
 967             // Try to delete directory if empty
 968             dir.delete();
 969         }
 970     }
 971
 972     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
 973         retryFailedReceivedMessages(handler, ignoreAttachments);
 974         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
 975
 976         try {
 977             if (messagePipe == null) {
 978                 messagePipe = messageReceiver.createMessagePipe();
 979             }
 980
 981             while (true) {
 982                 SignalServiceEnvelope envelope;
 983                 SignalServiceContent content = null;
 984                 Exception exception = null;
 985                 final long now = new Date().getTime();
 986                 try {
 987                     envelope = messagePipe.read(timeout, unit, new SignalServiceMessagePipe.MessagePipeCallback() {
 988                         @Override
 989                         public void onMessage(SignalServiceEnvelope envelope) {
 990                             // store message on disk, before acknowledging receipt to the server
 991                             try {
 992                                 File cacheFile = getMessageCacheFile(envelope.getSource(), now, envelope.getTimestamp());
 993                                 Utils.storeEnvelope(envelope, cacheFile);
 994                             } catch (IOException e) {
 995                                 System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
 996                             }
 997                         }
 998                     });
 999                 } catch (TimeoutException e) {
1000                     if (returnOnTimeout)
1001                         return;
1002                     continue;
1003                 } catch (InvalidVersionException e) {
1004                     System.err.println("Ignoring error: " + e.getMessage());
1005                     continue;
1006                 }
1007                 if (!envelope.isReceipt()) {
1008                     try {
1009                         content = decryptMessage(envelope);
1010                     } catch (Exception e) {
1011                         exception = e;
1012                     }
1013                     handleMessage(envelope, content, ignoreAttachments);
1014                 }
1015                 account.save();
1016                 handler.handleMessage(envelope, content, exception);
1017                 if (!(exception instanceof ProtocolUntrustedIdentityException)) {
1018                     File cacheFile = null;
1019                     try {
1020                         cacheFile = getMessageCacheFile(envelope.getSource(), now, envelope.getTimestamp());
1021                         Files.delete(cacheFile.toPath());
1022                         // Try to delete directory if empty
1023                         new File(getMessageCachePath()).delete();
1024                     } catch (IOException e) {
1025                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1026                     }
1027                 }
1028             }
1029         } finally {
1030             if (messagePipe != null) {
1031                 messagePipe.shutdown();
1032                 messagePipe = null;
1033             }
1034         }
1035     }
1036
1037     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1038         if (content != null) {
1039             if (content.getDataMessage().isPresent()) {
1040                 SignalServiceDataMessage message = content.getDataMessage().get();
1041                 handleSignalServiceDataMessage(message, false, envelope.getSource(), username, ignoreAttachments);
1042             }
1043             if (content.getSyncMessage().isPresent()) {
1044                 account.setMultiDevice(true);
1045                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1046                 if (syncMessage.getSent().isPresent()) {
1047                     SignalServiceDataMessage message = syncMessage.getSent().get().getMessage();
1048                     handleSignalServiceDataMessage(message, true, envelope.getSource(), syncMessage.getSent().get().getDestination().get(), ignoreAttachments);
1049                 }
1050                 if (syncMessage.getRequest().isPresent()) {
1051                     RequestMessage rm = syncMessage.getRequest().get();
1052                     if (rm.isContactsRequest()) {
1053                         try {
1054                             sendContacts();
1055                         } catch (UntrustedIdentityException | IOException e) {
1056                             e.printStackTrace();
1057                         }
1058                     }
1059                     if (rm.isGroupsRequest()) {
1060                         try {
1061                             sendGroups();
1062                         } catch (UntrustedIdentityException | IOException e) {
1063                             e.printStackTrace();
1064                         }
1065                     }
1066                     // TODO Handle rm.isBlockedListRequest(); rm.isConfigurationRequest();
1067                 }
1068                 if (syncMessage.getGroups().isPresent()) {
1069                     File tmpFile = null;
1070                     try {
1071                         tmpFile = IOUtils.createTempFile();
1072                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1073                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1074                             DeviceGroup g;
1075                             while ((g = s.read()) != null) {
1076                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1077                                 if (syncGroup == null) {
1078                                     syncGroup = new GroupInfo(g.getId());
1079                                 }
1080                                 if (g.getName().isPresent()) {
1081                                     syncGroup.name = g.getName().get();
1082                                 }
1083                                 syncGroup.members.addAll(g.getMembers());
1084                                 syncGroup.active = g.isActive();
1085                                 if (g.getColor().isPresent()) {
1086                                     syncGroup.color = g.getColor().get();
1087                                 }
1088
1089                                 if (g.getAvatar().isPresent()) {
1090                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1091                                 }
1092                                 account.getGroupStore().updateGroup(syncGroup);
1093                             }
1094                         }
1095                     } catch (Exception e) {
1096                         e.printStackTrace();
1097                     } finally {
1098                         if (tmpFile != null) {
1099                             try {
1100                                 Files.delete(tmpFile.toPath());
1101                             } catch (IOException e) {
1102                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1103                             }
1104                         }
1105                     }
1106                 }
1107                 if (syncMessage.getBlockedList().isPresent()) {
1108                     // TODO store list of blocked numbers
1109                 }
1110                 if (syncMessage.getContacts().isPresent()) {
1111                     File tmpFile = null;
1112                     try {
1113                         tmpFile = IOUtils.createTempFile();
1114                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1115                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1116                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1117                             if (contactsMessage.isComplete()) {
1118                                 account.getContactStore().clear();
1119                             }
1120                             DeviceContact c;
1121                             while ((c = s.read()) != null) {
1122                                 if (c.getNumber().equals(account.getUsername()) && c.getProfileKey().isPresent()) {
1123                                     account.setProfileKey(c.getProfileKey().get());
1124                                 }
1125                                 ContactInfo contact = account.getContactStore().getContact(c.getNumber());
1126                                 if (contact == null) {
1127                                     contact = new ContactInfo();
1128                                     contact.number = c.getNumber();
1129                                 }
1130                                 if (c.getName().isPresent()) {
1131                                     contact.name = c.getName().get();
1132                                 }
1133                                 if (c.getColor().isPresent()) {
1134                                     contact.color = c.getColor().get();
1135                                 }
1136                                 if (c.getProfileKey().isPresent()) {
1137                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get());
1138                                 }
1139                                 if (c.getVerified().isPresent()) {
1140                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1141                                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1142                                 }
1143                                 if (c.getExpirationTimer().isPresent()) {
1144                                     ThreadInfo thread = account.getThreadStore().getThread(c.getNumber());
1145                                     thread.messageExpirationTime = c.getExpirationTimer().get();
1146                                     account.getThreadStore().updateThread(thread);
1147                                 }
1148                                 if (c.isBlocked()) {
1149                                     // TODO store list of blocked numbers
1150                                 }
1151                                 account.getContactStore().updateContact(contact);
1152
1153                                 if (c.getAvatar().isPresent()) {
1154                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1155                                 }
1156                             }
1157                         }
1158                     } catch (Exception e) {
1159                         e.printStackTrace();
1160                     } finally {
1161                         if (tmpFile != null) {
1162                             try {
1163                                 Files.delete(tmpFile.toPath());
1164                             } catch (IOException e) {
1165                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1166                             }
1167                         }
1168                     }
1169                 }
1170                 if (syncMessage.getVerified().isPresent()) {
1171                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1172                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1173                 }
1174                 if (syncMessage.getConfiguration().isPresent()) {
1175                     // TODO
1176                 }
1177             }
1178         }
1179     }
1180
1181     private File getContactAvatarFile(String number) {
1182         return new File(avatarsPath, "contact-" + number);
1183     }
1184
1185     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1186         IOUtils.createPrivateDirectories(avatarsPath);
1187         if (attachment.isPointer()) {
1188             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1189             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1190         } else {
1191             SignalServiceAttachmentStream stream = attachment.asStream();
1192             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1193         }
1194     }
1195
1196     private File getGroupAvatarFile(byte[] groupId) {
1197         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1198     }
1199
1200     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1201         IOUtils.createPrivateDirectories(avatarsPath);
1202         if (attachment.isPointer()) {
1203             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1204             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1205         } else {
1206             SignalServiceAttachmentStream stream = attachment.asStream();
1207             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1208         }
1209     }
1210
1211     public File getAttachmentFile(long attachmentId) {
1212         return new File(attachmentsPath, attachmentId + "");
1213     }
1214
1215     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1216         IOUtils.createPrivateDirectories(attachmentsPath);
1217         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1218     }
1219
1220     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1221         if (storePreview && pointer.getPreview().isPresent()) {
1222             File previewFile = new File(outputFile + ".preview");
1223             try (OutputStream output = new FileOutputStream(previewFile)) {
1224                 byte[] preview = pointer.getPreview().get();
1225                 output.write(preview, 0, preview.length);
1226             } catch (FileNotFoundException e) {
1227                 e.printStackTrace();
1228                 return null;
1229             }
1230         }
1231
1232         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
1233
1234         File tmpFile = IOUtils.createTempFile();
1235         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1236             try (OutputStream output = new FileOutputStream(outputFile)) {
1237                 byte[] buffer = new byte[4096];
1238                 int read;
1239
1240                 while ((read = input.read(buffer)) != -1) {
1241                     output.write(buffer, 0, read);
1242                 }
1243             } catch (FileNotFoundException e) {
1244                 e.printStackTrace();
1245                 return null;
1246             }
1247         } finally {
1248             try {
1249                 Files.delete(tmpFile.toPath());
1250             } catch (IOException e) {
1251                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1252             }
1253         }
1254         return outputFile;
1255     }
1256
1257     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1258         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
1259         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1260     }
1261
1262     @Override
1263     public boolean isRemote() {
1264         return false;
1265     }
1266
1267     private void sendGroups() throws IOException, UntrustedIdentityException {
1268         File groupsFile = IOUtils.createTempFile();
1269
1270         try {
1271             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1272                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1273                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1274                     ThreadInfo info = account.getThreadStore().getThread(Base64.encodeBytes(record.groupId));
1275                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1276                             new ArrayList<>(record.members), createGroupAvatarAttachment(record.groupId),
1277                             record.active, Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1278                             Optional.fromNullable(record.color), false));
1279                 }
1280             }
1281
1282             if (groupsFile.exists() && groupsFile.length() > 0) {
1283                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1284                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1285                             .withStream(groupsFileStream)
1286                             .withContentType("application/octet-stream")
1287                             .withLength(groupsFile.length())
1288                             .build();
1289
1290                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1291                 }
1292             }
1293         } finally {
1294             try {
1295                 Files.delete(groupsFile.toPath());
1296             } catch (IOException e) {
1297                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1298             }
1299         }
1300     }
1301
1302     private void sendContacts() throws IOException, UntrustedIdentityException {
1303         File contactsFile = IOUtils.createTempFile();
1304
1305         try {
1306             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1307                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1308                 for (ContactInfo record : account.getContactStore().getContacts()) {
1309                     VerifiedMessage verifiedMessage = null;
1310                     ThreadInfo info = account.getThreadStore().getThread(record.number);
1311                     if (getIdentities().containsKey(record.number)) {
1312                         JsonIdentityKeyStore.Identity currentIdentity = null;
1313                         for (JsonIdentityKeyStore.Identity id : getIdentities().get(record.number)) {
1314                             if (currentIdentity == null || id.getDateAdded().after(currentIdentity.getDateAdded())) {
1315                                 currentIdentity = id;
1316                             }
1317                         }
1318                         if (currentIdentity != null) {
1319                             verifiedMessage = new VerifiedMessage(record.number, currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1320                         }
1321                     }
1322
1323                     byte[] profileKey = record.profileKey == null ? null : Base64.decode(record.profileKey);
1324                     // TODO store list of blocked numbers
1325                     boolean blocked = false;
1326                     out.write(new DeviceContact(record.number, Optional.fromNullable(record.name),
1327                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1328                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), blocked, Optional.fromNullable(info != null ? info.messageExpirationTime : null)));
1329                 }
1330
1331                 if (account.getProfileKey() != null) {
1332                     // Send our own profile key as well
1333                     out.write(new DeviceContact(account.getUsername(),
1334                             Optional.<String>absent(), Optional.<SignalServiceAttachmentStream>absent(),
1335                             Optional.<String>absent(), Optional.<VerifiedMessage>absent(),
1336                             Optional.of(account.getProfileKey()),
1337                             false, Optional.<Integer>absent()));
1338                 }
1339             }
1340
1341             if (contactsFile.exists() && contactsFile.length() > 0) {
1342                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1343                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1344                             .withStream(contactsFileStream)
1345                             .withContentType("application/octet-stream")
1346                             .withLength(contactsFile.length())
1347                             .build();
1348
1349                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1350                 }
1351             }
1352         } finally {
1353             try {
1354                 Files.delete(contactsFile.toPath());
1355             } catch (IOException e) {
1356                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1357             }
1358         }
1359     }
1360
1361     private void sendVerifiedMessage(String destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1362         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1363         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1364     }
1365
1366     public ContactInfo getContact(String number) {
1367         return account.getContactStore().getContact(number);
1368     }
1369
1370     public GroupInfo getGroup(byte[] groupId) {
1371         return account.getGroupStore().getGroup(groupId);
1372     }
1373
1374     public Map<String, List<JsonIdentityKeyStore.Identity>> getIdentities() {
1375         return account.getSignalProtocolStore().getIdentities();
1376     }
1377
1378     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) {
1379         return account.getSignalProtocolStore().getIdentities(number);
1380     }
1381
1382     /**
1383      * Trust this the identity with this fingerprint
1384      *
1385      * @param name        username of the identity
1386      * @param fingerprint Fingerprint
1387      */
1388     public boolean trustIdentityVerified(String name, byte[] fingerprint) {
1389         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1390         if (ids == null) {
1391             return false;
1392         }
1393         for (JsonIdentityKeyStore.Identity id : ids) {
1394             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1395                 continue;
1396             }
1397
1398             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1399             try {
1400                 sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1401             } catch (IOException | UntrustedIdentityException e) {
1402                 e.printStackTrace();
1403             }
1404             account.save();
1405             return true;
1406         }
1407         return false;
1408     }
1409
1410     /**
1411      * Trust this the identity with this safety number
1412      *
1413      * @param name         username of the identity
1414      * @param safetyNumber Safety number
1415      */
1416     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) {
1417         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1418         if (ids == null) {
1419             return false;
1420         }
1421         for (JsonIdentityKeyStore.Identity id : ids) {
1422             if (!safetyNumber.equals(computeSafetyNumber(name, id.getIdentityKey()))) {
1423                 continue;
1424             }
1425
1426             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1427             try {
1428                 sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1429             } catch (IOException | UntrustedIdentityException e) {
1430                 e.printStackTrace();
1431             }
1432             account.save();
1433             return true;
1434         }
1435         return false;
1436     }
1437
1438     /**
1439      * Trust all keys of this identity without verification
1440      *
1441      * @param name username of the identity
1442      */
1443     public boolean trustIdentityAllKeys(String name) {
1444         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1445         if (ids == null) {
1446             return false;
1447         }
1448         for (JsonIdentityKeyStore.Identity id : ids) {
1449             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1450                 account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1451                 try {
1452                     sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1453                 } catch (IOException | UntrustedIdentityException e) {
1454                     e.printStackTrace();
1455                 }
1456             }
1457         }
1458         account.save();
1459         return true;
1460     }
1461
1462     public String computeSafetyNumber(String theirUsername, IdentityKey theirIdentityKey) {
1463         return Utils.computeSafetyNumber(username, getIdentity(), theirUsername, theirIdentityKey);
1464     }
1465
1466     public interface ReceiveMessageHandler {
1467
1468         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
1469     }
1470 }