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.push.UnsupportedDataMessageException;
  60 import org.whispersystems.signalservice.internal.util.Base64;
  61
  62 import java.io.*;
  63 import java.net.URI;
  64 import java.nio.file.Files;
  65 import java.nio.file.Paths;
  66 import java.nio.file.StandardCopyOption;
  67 import java.util.*;
  68 import java.util.concurrent.TimeUnit;
  69 import java.util.concurrent.TimeoutException;
  70
  71 public class Manager implements Signal {
  72
  73     private final String settingsPath;
  74     private final String dataPath;
  75     private final String attachmentsPath;
  76     private final String avatarsPath;
  77     private final SleepTimer timer = new UptimeSleepTimer();
  78
  79     private SignalAccount account;
  80     private String username;
  81     private SignalServiceAccountManager accountManager;
  82     private SignalServiceMessagePipe messagePipe = null;
  83     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
  84
  85     public Manager(String username, String settingsPath) {
  86         this.username = username;
  87         this.settingsPath = settingsPath;
  88         this.dataPath = this.settingsPath + "/data";
  89         this.attachmentsPath = this.settingsPath + "/attachments";
  90         this.avatarsPath = this.settingsPath + "/avatars";
  91
  92     }
  93
  94     public String getUsername() {
  95         return username;
  96     }
  97
  98     private IdentityKey getIdentity() {
  99         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
 100     }
 101
 102     public int getDeviceId() {
 103         return account.getDeviceId();
 104     }
 105
 106     private String getMessageCachePath() {
 107         return this.dataPath + "/" + username + ".d/msg-cache";
 108     }
 109
 110     private String getMessageCachePath(String sender) {
 111         return getMessageCachePath() + "/" + sender.replace("/", "_");
 112     }
 113
 114     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 115         String cachePath = getMessageCachePath(sender);
 116         IOUtils.createPrivateDirectories(cachePath);
 117         return new File(cachePath + "/" + now + "_" + timestamp);
 118     }
 119
 120     public boolean userHasKeys() {
 121         return account != null && account.getSignalProtocolStore() != null;
 122     }
 123
 124     public void init() throws IOException {
 125         if (!SignalAccount.userExists(dataPath, username)) {
 126             return;
 127         }
 128         account = SignalAccount.load(dataPath, username);
 129
 130         migrateLegacyConfigs();
 131
 132         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 133         try {
 134             if (account.isRegistered() && accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 135                 refreshPreKeys();
 136                 account.save();
 137             }
 138         } catch (AuthorizationFailedException e) {
 139             System.err.println("Authorization failed, was the number registered elsewhere?");
 140             throw e;
 141         }
 142     }
 143
 144     private void migrateLegacyConfigs() {
 145         // Copy group avatars that were previously stored in the attachments folder
 146         // to the new avatar folder
 147         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 148             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 149                 File avatarFile = getGroupAvatarFile(g.groupId);
 150                 File attachmentFile = getAttachmentFile(g.getAvatarId());
 151                 if (!avatarFile.exists() && attachmentFile.exists()) {
 152                     try {
 153                         IOUtils.createPrivateDirectories(avatarsPath);
 154                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 155                     } catch (Exception e) {
 156                         // Ignore
 157                     }
 158                 }
 159             }
 160             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 161             account.save();
 162         }
 163         if (account.getProfileKey() == null) {
 164             // Old config file, creating new profile key
 165             account.setProfileKey(KeyUtils.createProfileKey());
 166             account.save();
 167         }
 168     }
 169
 170     private void createNewIdentity() throws IOException {
 171         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 172         int registrationId = KeyHelper.generateRegistrationId(false);
 173         if (username == null) {
 174             account = SignalAccount.createTemporaryAccount(identityKey, registrationId);
 175         } else {
 176             byte[] profileKey = KeyUtils.createProfileKey();
 177             account = SignalAccount.create(dataPath, username, identityKey, registrationId, profileKey);
 178             account.save();
 179         }
 180     }
 181
 182     public boolean isRegistered() {
 183         return account != null && account.isRegistered();
 184     }
 185
 186     public void register(boolean voiceVerification) throws IOException {
 187         if (account == null) {
 188             createNewIdentity();
 189         }
 190         account.setPassword(KeyUtils.createPassword());
 191         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, account.getUsername(), account.getPassword(), BaseConfig.USER_AGENT, timer);
 192
 193         if (voiceVerification) {
 194             accountManager.requestVoiceVerificationCode(Locale.getDefault(), Optional.<String>absent(), Optional.<String>absent());
 195         } else {
 196             accountManager.requestSmsVerificationCode(false, Optional.<String>absent(), Optional.<String>absent());
 197         }
 198
 199         account.setRegistered(false);
 200         account.save();
 201     }
 202
 203     public void updateAccountAttributes() throws IOException {
 204         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), getSelfUnidentifiedAccessKey(), false);
 205     }
 206
 207     public void unregister() throws IOException {
 208         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 209         // If this is the master device, other users can't send messages to this number anymore.
 210         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 211         accountManager.setGcmId(Optional.<String>absent());
 212
 213         account.setRegistered(false);
 214         account.save();
 215     }
 216
 217     public String getDeviceLinkUri() throws TimeoutException, IOException {
 218         if (account == null) {
 219             createNewIdentity();
 220         }
 221         account.setPassword(KeyUtils.createPassword());
 222         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, username, account.getPassword(), BaseConfig.USER_AGENT, timer);
 223         String uuid = accountManager.getNewDeviceUuid();
 224
 225         return Utils.createDeviceLinkUri(new Utils.DeviceLinkInfo(uuid, getIdentity().getPublicKey()));
 226     }
 227
 228     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 229         account.setSignalingKey(KeyUtils.createSignalingKey());
 230         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 231
 232         username = ret.getNumber();
 233         // TODO do this check before actually registering
 234         if (SignalAccount.userExists(dataPath, username)) {
 235             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 236         }
 237
 238         // Create new account with the synced identity
 239         byte[] profileKey = ret.getProfileKey();
 240         if (profileKey == null) {
 241             profileKey = KeyUtils.createProfileKey();
 242         }
 243         account = SignalAccount.createLinkedAccount(dataPath, username, account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 244
 245         refreshPreKeys();
 246
 247         requestSyncGroups();
 248         requestSyncContacts();
 249         requestSyncBlocked();
 250         requestSyncConfiguration();
 251
 252         account.save();
 253     }
 254
 255     public List<DeviceInfo> getLinkedDevices() throws IOException {
 256         List<DeviceInfo> devices = accountManager.getDevices();
 257         account.setMultiDevice(devices.size() > 1);
 258         account.save();
 259         return devices;
 260     }
 261
 262     public void removeLinkedDevices(int deviceId) throws IOException {
 263         accountManager.removeDevice(deviceId);
 264         List<DeviceInfo> devices = accountManager.getDevices();
 265         account.setMultiDevice(devices.size() > 1);
 266         account.save();
 267     }
 268
 269     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 270         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 271
 272         addDevice(info.deviceIdentifier, info.deviceKey);
 273     }
 274
 275     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 276         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 277         String verificationCode = accountManager.getNewDeviceVerificationCode();
 278
 279         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey()), verificationCode);
 280         account.setMultiDevice(true);
 281         account.save();
 282     }
 283
 284     private List<PreKeyRecord> generatePreKeys() {
 285         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 286
 287         final int offset = account.getPreKeyIdOffset();
 288         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 289             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 290             ECKeyPair keyPair = Curve.generateKeyPair();
 291             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 292
 293             records.add(record);
 294         }
 295
 296         account.addPreKeys(records);
 297         account.save();
 298
 299         return records;
 300     }
 301
 302     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 303         try {
 304             ECKeyPair keyPair = Curve.generateKeyPair();
 305             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 306             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 307
 308             account.addSignedPreKey(record);
 309             account.save();
 310
 311             return record;
 312         } catch (InvalidKeyException e) {
 313             throw new AssertionError(e);
 314         }
 315     }
 316
 317     public void verifyAccount(String verificationCode, String pin) throws IOException {
 318         verificationCode = verificationCode.replace("-", "");
 319         account.setSignalingKey(KeyUtils.createSignalingKey());
 320         // TODO make unrestricted unidentified access configurable
 321         accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, getSelfUnidentifiedAccessKey(), false);
 322
 323         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 324         account.setRegistered(true);
 325         account.setRegistrationLockPin(pin);
 326
 327         refreshPreKeys();
 328         account.save();
 329     }
 330
 331     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 332         accountManager.setPin(pin);
 333         if (pin.isPresent()) {
 334             account.setRegistrationLockPin(pin.get());
 335         } else {
 336             account.setRegistrationLockPin(null);
 337         }
 338         account.save();
 339     }
 340
 341     private void refreshPreKeys() throws IOException {
 342         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 343         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 344         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 345
 346         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 347     }
 348
 349     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 350         File file = getGroupAvatarFile(groupId);
 351         if (!file.exists()) {
 352             return Optional.absent();
 353         }
 354
 355         return Optional.of(Utils.createAttachment(file));
 356     }
 357
 358     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 359         File file = getContactAvatarFile(number);
 360         if (!file.exists()) {
 361             return Optional.absent();
 362         }
 363
 364         return Optional.of(Utils.createAttachment(file));
 365     }
 366
 367     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 368         GroupInfo g = account.getGroupStore().getGroup(groupId);
 369         if (g == null) {
 370             throw new GroupNotFoundException(groupId);
 371         }
 372         for (String member : g.members) {
 373             if (member.equals(this.username)) {
 374                 return g;
 375             }
 376         }
 377         throw new NotAGroupMemberException(groupId, g.name);
 378     }
 379
 380     public List<GroupInfo> getGroups() {
 381         return account.getGroupStore().getGroups();
 382     }
 383
 384     @Override
 385     public void sendGroupMessage(String messageText, List<String> attachments,
 386                                  byte[] groupId)
 387             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 388         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 389         if (attachments != null) {
 390             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 391         }
 392         if (groupId != null) {
 393             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 394                     .withId(groupId)
 395                     .build();
 396             messageBuilder.asGroupMessage(group);
 397         }
 398         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 399         if (thread != null) {
 400             messageBuilder.withExpiration(thread.messageExpirationTime);
 401         }
 402
 403         final GroupInfo g = getGroupForSending(groupId);
 404
 405         // Don't send group message to ourself
 406         final List<String> membersSend = new ArrayList<>(g.members);
 407         membersSend.remove(this.username);
 408         sendMessageLegacy(messageBuilder, membersSend);
 409     }
 410
 411     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 412         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 413                 .withId(groupId)
 414                 .build();
 415
 416         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 417                 .asGroupMessage(group);
 418
 419         final GroupInfo g = getGroupForSending(groupId);
 420         g.members.remove(this.username);
 421         account.getGroupStore().updateGroup(g);
 422
 423         sendMessageLegacy(messageBuilder, g.members);
 424     }
 425
 426     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 427         GroupInfo g;
 428         if (groupId == null) {
 429             // Create new group
 430             g = new GroupInfo(KeyUtils.createGroupId());
 431             g.members.add(username);
 432         } else {
 433             g = getGroupForSending(groupId);
 434         }
 435
 436         if (name != null) {
 437             g.name = name;
 438         }
 439
 440         if (members != null) {
 441             Set<String> newMembers = new HashSet<>();
 442             for (String member : members) {
 443                 try {
 444                     member = Utils.canonicalizeNumber(member, username);
 445                 } catch (InvalidNumberException e) {
 446                     System.err.println("Failed to add member \"" + member + "\" to group: " + e.getMessage());
 447                     System.err.println("Aborting…");
 448                     System.exit(1);
 449                 }
 450                 if (g.members.contains(member)) {
 451                     continue;
 452                 }
 453                 newMembers.add(member);
 454                 g.members.add(member);
 455             }
 456             final List<ContactTokenDetails> contacts = accountManager.getContacts(newMembers);
 457             if (contacts.size() != newMembers.size()) {
 458                 // Some of the new members are not registered on Signal
 459                 for (ContactTokenDetails contact : contacts) {
 460                     newMembers.remove(contact.getNumber());
 461                 }
 462                 System.err.println("Failed to add members " + Util.join(", ", newMembers) + " to group: Not registered on Signal");
 463                 System.err.println("Aborting…");
 464                 System.exit(1);
 465             }
 466         }
 467
 468         if (avatarFile != null) {
 469             IOUtils.createPrivateDirectories(avatarsPath);
 470             File aFile = getGroupAvatarFile(g.groupId);
 471             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 472         }
 473
 474         account.getGroupStore().updateGroup(g);
 475
 476         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 477
 478         // Don't send group message to ourself
 479         final List<String> membersSend = new ArrayList<>(g.members);
 480         membersSend.remove(this.username);
 481         sendMessageLegacy(messageBuilder, membersSend);
 482         return g.groupId;
 483     }
 484
 485     private void sendUpdateGroupMessage(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 486         if (groupId == null) {
 487             return;
 488         }
 489         GroupInfo g = getGroupForSending(groupId);
 490
 491         if (!g.members.contains(recipient)) {
 492             return;
 493         }
 494
 495         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 496
 497         // Send group message only to the recipient who requested it
 498         final List<String> membersSend = new ArrayList<>();
 499         membersSend.add(recipient);
 500         sendMessageLegacy(messageBuilder, membersSend);
 501     }
 502
 503     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 504         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 505                 .withId(g.groupId)
 506                 .withName(g.name)
 507                 .withMembers(new ArrayList<>(g.members));
 508
 509         File aFile = getGroupAvatarFile(g.groupId);
 510         if (aFile.exists()) {
 511             try {
 512                 group.withAvatar(Utils.createAttachment(aFile));
 513             } catch (IOException e) {
 514                 throw new AttachmentInvalidException(aFile.toString(), e);
 515             }
 516         }
 517
 518         return SignalServiceDataMessage.newBuilder()
 519                 .asGroupMessage(group.build());
 520     }
 521
 522     private void sendGroupInfoRequest(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 523         if (groupId == null) {
 524             return;
 525         }
 526
 527         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 528                 .withId(groupId);
 529
 530         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 531                 .asGroupMessage(group.build());
 532
 533         // Send group info request message to the recipient who sent us a message with this groupId
 534         final List<String> membersSend = new ArrayList<>();
 535         membersSend.add(recipient);
 536         sendMessageLegacy(messageBuilder, membersSend);
 537     }
 538
 539     @Override
 540     public void sendMessage(String message, List<String> attachments, String recipient)
 541             throws EncapsulatedExceptions, AttachmentInvalidException, IOException {
 542         List<String> recipients = new ArrayList<>(1);
 543         recipients.add(recipient);
 544         sendMessage(message, attachments, recipients);
 545     }
 546
 547     @Override
 548     public void sendMessage(String messageText, List<String> attachments,
 549                             List<String> recipients)
 550             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 551         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 552         if (attachments != null) {
 553             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 554         }
 555         sendMessageLegacy(messageBuilder, recipients);
 556     }
 557
 558     @Override
 559     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions {
 560         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 561                 .asEndSessionMessage();
 562
 563         sendMessageLegacy(messageBuilder, recipients);
 564     }
 565
 566     @Override
 567     public String getContactName(String number) {
 568         ContactInfo contact = account.getContactStore().getContact(number);
 569         if (contact == null) {
 570             return "";
 571         } else {
 572             return contact.name;
 573         }
 574     }
 575
 576     @Override
 577     public void setContactName(String number, String name) {
 578         ContactInfo contact = account.getContactStore().getContact(number);
 579         if (contact == null) {
 580             contact = new ContactInfo();
 581             contact.number = number;
 582             System.err.println("Add contact " + number + " named " + name);
 583         } else {
 584             System.err.println("Updating contact " + number + " name " + contact.name + " -> " + name);
 585         }
 586         contact.name = name;
 587         account.getContactStore().updateContact(contact);
 588         account.save();
 589     }
 590
 591     @Override
 592     public List<byte[]> getGroupIds() {
 593         List<GroupInfo> groups = getGroups();
 594         List<byte[]> ids = new ArrayList<>(groups.size());
 595         for (GroupInfo group : groups) {
 596             ids.add(group.groupId);
 597         }
 598         return ids;
 599     }
 600
 601     @Override
 602     public String getGroupName(byte[] groupId) {
 603         GroupInfo group = getGroup(groupId);
 604         if (group == null) {
 605             return "";
 606         } else {
 607             return group.name;
 608         }
 609     }
 610
 611     @Override
 612     public List<String> getGroupMembers(byte[] groupId) {
 613         GroupInfo group = getGroup(groupId);
 614         if (group == null) {
 615             return new ArrayList<>();
 616         } else {
 617             return new ArrayList<>(group.members);
 618         }
 619     }
 620
 621     @Override
 622     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 623         if (groupId.length == 0) {
 624             groupId = null;
 625         }
 626         if (name.isEmpty()) {
 627             name = null;
 628         }
 629         if (members.size() == 0) {
 630             members = null;
 631         }
 632         if (avatar.isEmpty()) {
 633             avatar = null;
 634         }
 635         return sendUpdateGroupMessage(groupId, name, members, avatar);
 636     }
 637
 638     /**
 639      * Change the expiration timer for a thread (number of groupId)
 640      *
 641      * @param numberOrGroupId
 642      * @param messageExpirationTimer
 643      */
 644     public void setExpirationTimer(String numberOrGroupId, int messageExpirationTimer) {
 645         ThreadInfo thread = account.getThreadStore().getThread(numberOrGroupId);
 646         thread.messageExpirationTime = messageExpirationTimer;
 647         account.getThreadStore().updateThread(thread);
 648     }
 649
 650     private void requestSyncGroups() throws IOException {
 651         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 652         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 653         try {
 654             sendSyncMessage(message);
 655         } catch (UntrustedIdentityException e) {
 656             e.printStackTrace();
 657         }
 658     }
 659
 660     private void requestSyncContacts() throws IOException {
 661         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 662         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 663         try {
 664             sendSyncMessage(message);
 665         } catch (UntrustedIdentityException e) {
 666             e.printStackTrace();
 667         }
 668     }
 669
 670     private void requestSyncBlocked() throws IOException {
 671         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 672         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 673         try {
 674             sendSyncMessage(message);
 675         } catch (UntrustedIdentityException e) {
 676             e.printStackTrace();
 677         }
 678     }
 679
 680     private void requestSyncConfiguration() throws IOException {
 681         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 682         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 683         try {
 684             sendSyncMessage(message);
 685         } catch (UntrustedIdentityException e) {
 686             e.printStackTrace();
 687         }
 688     }
 689
 690     private byte[] getSelfUnidentifiedAccessKey() {
 691         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 692     }
 693
 694     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 695         // TODO implement
 696         return null;
 697     }
 698
 699     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 700         // TODO implement
 701         return Optional.absent();
 702     }
 703
 704     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
 705         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
 706         for (SignalServiceAddress recipient : recipients) {
 707             result.add(Optional.<UnidentifiedAccessPair>absent());
 708         }
 709         return result;
 710     }
 711
 712     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
 713         // TODO implement
 714         return Optional.absent();
 715     }
 716
 717     private void sendSyncMessage(SignalServiceSyncMessage message)
 718             throws IOException, UntrustedIdentityException {
 719         SignalServiceMessageSender messageSender = new SignalServiceMessageSender(BaseConfig.serviceConfiguration, username, account.getPassword(),
 720                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 721         try {
 722             messageSender.sendMessage(message, getAccessForSync());
 723         } catch (UntrustedIdentityException e) {
 724             account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 725             throw e;
 726         }
 727     }
 728
 729     /**
 730      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
 731      */
 732     private void sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 733             throws EncapsulatedExceptions, IOException {
 734         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
 735
 736         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
 737         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
 738         List<NetworkFailureException> networkExceptions = new LinkedList<>();
 739
 740         for (SendMessageResult result : results) {
 741             if (result.isUnregisteredFailure()) {
 742                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getNumber(), null));
 743             } else if (result.isNetworkFailure()) {
 744                 networkExceptions.add(new NetworkFailureException(result.getAddress().getNumber(), null));
 745             } else if (result.getIdentityFailure() != null) {
 746                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getNumber(), result.getIdentityFailure().getIdentityKey()));
 747             }
 748         }
 749         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
 750             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
 751         }
 752     }
 753
 754     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 755             throws IOException {
 756         Set<SignalServiceAddress> recipientsTS = Utils.getSignalServiceAddresses(recipients, username);
 757         if (recipientsTS == null) {
 758             account.save();
 759             return Collections.emptyList();
 760         }
 761
 762         SignalServiceDataMessage message = null;
 763         try {
 764             SignalServiceMessageSender messageSender = new SignalServiceMessageSender(BaseConfig.serviceConfiguration, username, account.getPassword(),
 765                     account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 766
 767             message = messageBuilder.build();
 768             if (message.getGroupInfo().isPresent()) {
 769                 try {
 770                     final boolean isRecipientUpdate = true;
 771                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipientsTS), getAccessFor(recipientsTS), isRecipientUpdate, message);
 772                     for (SendMessageResult r : result) {
 773                         if (r.getIdentityFailure() != null) {
 774                             account.getSignalProtocolStore().saveIdentity(r.getAddress().getNumber(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
 775                         }
 776                     }
 777                     return result;
 778                 } catch (UntrustedIdentityException e) {
 779                     account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 780                     return Collections.emptyList();
 781                 }
 782             } else if (recipientsTS.size() == 1 && recipientsTS.contains(new SignalServiceAddress(username))) {
 783                 SignalServiceAddress recipient = new SignalServiceAddress(username);
 784                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
 785                 SentTranscriptMessage transcript = new SentTranscriptMessage(recipient.getNumber(),
 786                         message.getTimestamp(),
 787                         message,
 788                         message.getExpiresInSeconds(),
 789                         Collections.singletonMap(recipient.getNumber(), unidentifiedAccess.isPresent()),
 790                         false);
 791                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
 792
 793                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 794                 try {
 795                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
 796                 } catch (UntrustedIdentityException e) {
 797                     account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 798                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
 799                 }
 800                 return results;
 801             } else {
 802                 // Send to all individually, so sync messages are sent correctly
 803                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 804                 for (SignalServiceAddress address : recipientsTS) {
 805                     ThreadInfo thread = account.getThreadStore().getThread(address.getNumber());
 806                     if (thread != null) {
 807                         messageBuilder.withExpiration(thread.messageExpirationTime);
 808                     } else {
 809                         messageBuilder.withExpiration(0);
 810                     }
 811                     message = messageBuilder.build();
 812                     try {
 813                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
 814                         results.add(result);
 815                     } catch (UntrustedIdentityException e) {
 816                         account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 817                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
 818                     }
 819                 }
 820                 return results;
 821             }
 822         } finally {
 823             if (message != null && message.isEndSession()) {
 824                 for (SignalServiceAddress recipient : recipientsTS) {
 825                     handleEndSession(recipient.getNumber());
 826                 }
 827             }
 828             account.save();
 829         }
 830     }
 831
 832     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, ProtocolUntrustedIdentityException, SelfSendException, UnsupportedDataMessageException {
 833         SignalServiceCipher cipher = new SignalServiceCipher(new SignalServiceAddress(username), account.getSignalProtocolStore(), Utils.getCertificateValidator());
 834         try {
 835             return cipher.decrypt(envelope);
 836         } catch (ProtocolUntrustedIdentityException e) {
 837             // TODO We don't get the new untrusted identity from ProtocolUntrustedIdentityException anymore ... we need to get it from somewhere else
 838 //            account.getSignalProtocolStore().saveIdentity(e.getSender(), e.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
 839             throw e;
 840         }
 841     }
 842
 843     private void handleEndSession(String source) {
 844         account.getSignalProtocolStore().deleteAllSessions(source);
 845     }
 846
 847     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, String source, String destination, boolean ignoreAttachments) {
 848         String threadId;
 849         if (message.getGroupInfo().isPresent()) {
 850             SignalServiceGroup groupInfo = message.getGroupInfo().get();
 851             threadId = Base64.encodeBytes(groupInfo.getGroupId());
 852             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
 853             switch (groupInfo.getType()) {
 854                 case UPDATE:
 855                     if (group == null) {
 856                         group = new GroupInfo(groupInfo.getGroupId());
 857                     }
 858
 859                     if (groupInfo.getAvatar().isPresent()) {
 860                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
 861                         if (avatar.isPointer()) {
 862                             try {
 863                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
 864                             } catch (IOException | InvalidMessageException e) {
 865                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
 866                             }
 867                         }
 868                     }
 869
 870                     if (groupInfo.getName().isPresent()) {
 871                         group.name = groupInfo.getName().get();
 872                     }
 873
 874                     if (groupInfo.getMembers().isPresent()) {
 875                         group.members.addAll(groupInfo.getMembers().get());
 876                     }
 877
 878                     account.getGroupStore().updateGroup(group);
 879                     break;
 880                 case DELIVER:
 881                     if (group == null) {
 882                         try {
 883                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 884                         } catch (IOException | EncapsulatedExceptions e) {
 885                             e.printStackTrace();
 886                         }
 887                     }
 888                     break;
 889                 case QUIT:
 890                     if (group == null) {
 891                         try {
 892                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 893                         } catch (IOException | EncapsulatedExceptions e) {
 894                             e.printStackTrace();
 895                         }
 896                     } else {
 897                         group.members.remove(source);
 898                         account.getGroupStore().updateGroup(group);
 899                     }
 900                     break;
 901                 case REQUEST_INFO:
 902                     if (group != null) {
 903                         try {
 904                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
 905                         } catch (IOException | EncapsulatedExceptions e) {
 906                             e.printStackTrace();
 907                         } catch (NotAGroupMemberException e) {
 908                             // We have left this group, so don't send a group update message
 909                         }
 910                     }
 911                     break;
 912             }
 913         } else {
 914             if (isSync) {
 915                 threadId = destination;
 916             } else {
 917                 threadId = source;
 918             }
 919         }
 920         if (message.isEndSession()) {
 921             handleEndSession(isSync ? destination : source);
 922         }
 923         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
 924             ThreadInfo thread = account.getThreadStore().getThread(threadId);
 925             if (thread == null) {
 926                 thread = new ThreadInfo();
 927                 thread.id = threadId;
 928             }
 929             if (thread.messageExpirationTime != message.getExpiresInSeconds()) {
 930                 thread.messageExpirationTime = message.getExpiresInSeconds();
 931                 account.getThreadStore().updateThread(thread);
 932             }
 933         }
 934         if (message.getAttachments().isPresent() && !ignoreAttachments) {
 935             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
 936                 if (attachment.isPointer()) {
 937                     try {
 938                         retrieveAttachment(attachment.asPointer());
 939                     } catch (IOException | InvalidMessageException e) {
 940                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
 941                     }
 942                 }
 943             }
 944         }
 945         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
 946             if (source.equals(username)) {
 947                 this.account.setProfileKey(message.getProfileKey().get());
 948             }
 949             ContactInfo contact = account.getContactStore().getContact(source);
 950             if (contact == null) {
 951                 contact = new ContactInfo();
 952                 contact.number = source;
 953             }
 954             contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
 955         }
 956     }
 957
 958     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
 959         final File cachePath = new File(getMessageCachePath());
 960         if (!cachePath.exists()) {
 961             return;
 962         }
 963         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
 964             if (!dir.isDirectory()) {
 965                 continue;
 966             }
 967
 968             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
 969                 if (!fileEntry.isFile()) {
 970                     continue;
 971                 }
 972                 SignalServiceEnvelope envelope;
 973                 try {
 974                     envelope = Utils.loadEnvelope(fileEntry);
 975                     if (envelope == null) {
 976                         continue;
 977                     }
 978                 } catch (IOException e) {
 979                     e.printStackTrace();
 980                     continue;
 981                 }
 982                 SignalServiceContent content = null;
 983                 if (!envelope.isReceipt()) {
 984                     try {
 985                         content = decryptMessage(envelope);
 986                     } catch (Exception e) {
 987                         continue;
 988                     }
 989                     handleMessage(envelope, content, ignoreAttachments);
 990                 }
 991                 account.save();
 992                 handler.handleMessage(envelope, content, null);
 993                 try {
 994                     Files.delete(fileEntry.toPath());
 995                 } catch (IOException e) {
 996                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
 997                 }
 998             }
 999             // Try to delete directory if empty
1000             dir.delete();
1001         }
1002     }
1003
1004     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1005         retryFailedReceivedMessages(handler, ignoreAttachments);
1006         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
1007
1008         try {
1009             if (messagePipe == null) {
1010                 messagePipe = messageReceiver.createMessagePipe();
1011             }
1012
1013             while (true) {
1014                 SignalServiceEnvelope envelope;
1015                 SignalServiceContent content = null;
1016                 Exception exception = null;
1017                 final long now = new Date().getTime();
1018                 try {
1019                     envelope = messagePipe.read(timeout, unit, new SignalServiceMessagePipe.MessagePipeCallback() {
1020                         @Override
1021                         public void onMessage(SignalServiceEnvelope envelope) {
1022                             // store message on disk, before acknowledging receipt to the server
1023                             try {
1024                                 File cacheFile = getMessageCacheFile(envelope.getSource(), now, envelope.getTimestamp());
1025                                 Utils.storeEnvelope(envelope, cacheFile);
1026                             } catch (IOException e) {
1027                                 System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1028                             }
1029                         }
1030                     });
1031                 } catch (TimeoutException e) {
1032                     if (returnOnTimeout)
1033                         return;
1034                     continue;
1035                 } catch (InvalidVersionException e) {
1036                     System.err.println("Ignoring error: " + e.getMessage());
1037                     continue;
1038                 }
1039                 if (!envelope.isReceipt()) {
1040                     try {
1041                         content = decryptMessage(envelope);
1042                     } catch (Exception e) {
1043                         exception = e;
1044                     }
1045                     handleMessage(envelope, content, ignoreAttachments);
1046                 }
1047                 account.save();
1048                 handler.handleMessage(envelope, content, exception);
1049                 if (!(exception instanceof ProtocolUntrustedIdentityException)) {
1050                     File cacheFile = null;
1051                     try {
1052                         cacheFile = getMessageCacheFile(envelope.getSource(), now, envelope.getTimestamp());
1053                         Files.delete(cacheFile.toPath());
1054                         // Try to delete directory if empty
1055                         new File(getMessageCachePath()).delete();
1056                     } catch (IOException e) {
1057                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1058                     }
1059                 }
1060             }
1061         } finally {
1062             if (messagePipe != null) {
1063                 messagePipe.shutdown();
1064                 messagePipe = null;
1065             }
1066         }
1067     }
1068
1069     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1070         if (content != null) {
1071             if (content.getDataMessage().isPresent()) {
1072                 SignalServiceDataMessage message = content.getDataMessage().get();
1073                 handleSignalServiceDataMessage(message, false, envelope.getSource(), username, ignoreAttachments);
1074             }
1075             if (content.getSyncMessage().isPresent()) {
1076                 account.setMultiDevice(true);
1077                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1078                 if (syncMessage.getSent().isPresent()) {
1079                     SignalServiceDataMessage message = syncMessage.getSent().get().getMessage();
1080                     handleSignalServiceDataMessage(message, true, envelope.getSource(), syncMessage.getSent().get().getDestination().get(), ignoreAttachments);
1081                 }
1082                 if (syncMessage.getRequest().isPresent()) {
1083                     RequestMessage rm = syncMessage.getRequest().get();
1084                     if (rm.isContactsRequest()) {
1085                         try {
1086                             sendContacts();
1087                         } catch (UntrustedIdentityException | IOException e) {
1088                             e.printStackTrace();
1089                         }
1090                     }
1091                     if (rm.isGroupsRequest()) {
1092                         try {
1093                             sendGroups();
1094                         } catch (UntrustedIdentityException | IOException e) {
1095                             e.printStackTrace();
1096                         }
1097                     }
1098                     // TODO Handle rm.isBlockedListRequest(); rm.isConfigurationRequest();
1099                 }
1100                 if (syncMessage.getGroups().isPresent()) {
1101                     File tmpFile = null;
1102                     try {
1103                         tmpFile = IOUtils.createTempFile();
1104                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1105                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1106                             DeviceGroup g;
1107                             while ((g = s.read()) != null) {
1108                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1109                                 if (syncGroup == null) {
1110                                     syncGroup = new GroupInfo(g.getId());
1111                                 }
1112                                 if (g.getName().isPresent()) {
1113                                     syncGroup.name = g.getName().get();
1114                                 }
1115                                 syncGroup.members.addAll(g.getMembers());
1116                                 syncGroup.active = g.isActive();
1117                                 if (g.getColor().isPresent()) {
1118                                     syncGroup.color = g.getColor().get();
1119                                 }
1120
1121                                 if (g.getAvatar().isPresent()) {
1122                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1123                                 }
1124                                 account.getGroupStore().updateGroup(syncGroup);
1125                             }
1126                         }
1127                     } catch (Exception e) {
1128                         e.printStackTrace();
1129                     } finally {
1130                         if (tmpFile != null) {
1131                             try {
1132                                 Files.delete(tmpFile.toPath());
1133                             } catch (IOException e) {
1134                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1135                             }
1136                         }
1137                     }
1138                 }
1139                 if (syncMessage.getBlockedList().isPresent()) {
1140                     // TODO store list of blocked numbers
1141                 }
1142                 if (syncMessage.getContacts().isPresent()) {
1143                     File tmpFile = null;
1144                     try {
1145                         tmpFile = IOUtils.createTempFile();
1146                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1147                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1148                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1149                             if (contactsMessage.isComplete()) {
1150                                 account.getContactStore().clear();
1151                             }
1152                             DeviceContact c;
1153                             while ((c = s.read()) != null) {
1154                                 if (c.getNumber().equals(account.getUsername()) && c.getProfileKey().isPresent()) {
1155                                     account.setProfileKey(c.getProfileKey().get());
1156                                 }
1157                                 ContactInfo contact = account.getContactStore().getContact(c.getNumber());
1158                                 if (contact == null) {
1159                                     contact = new ContactInfo();
1160                                     contact.number = c.getNumber();
1161                                 }
1162                                 if (c.getName().isPresent()) {
1163                                     contact.name = c.getName().get();
1164                                 }
1165                                 if (c.getColor().isPresent()) {
1166                                     contact.color = c.getColor().get();
1167                                 }
1168                                 if (c.getProfileKey().isPresent()) {
1169                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get());
1170                                 }
1171                                 if (c.getVerified().isPresent()) {
1172                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1173                                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1174                                 }
1175                                 if (c.getExpirationTimer().isPresent()) {
1176                                     ThreadInfo thread = account.getThreadStore().getThread(c.getNumber());
1177                                     if (thread == null) {
1178                                         thread = new ThreadInfo();
1179                                         thread.id = c.getNumber();
1180                                     }
1181                                     thread.messageExpirationTime = c.getExpirationTimer().get();
1182                                     account.getThreadStore().updateThread(thread);
1183                                 }
1184                                 if (c.isBlocked()) {
1185                                     // TODO store list of blocked numbers
1186                                 }
1187                                 account.getContactStore().updateContact(contact);
1188
1189                                 if (c.getAvatar().isPresent()) {
1190                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1191                                 }
1192                             }
1193                         }
1194                     } catch (Exception e) {
1195                         e.printStackTrace();
1196                     } finally {
1197                         if (tmpFile != null) {
1198                             try {
1199                                 Files.delete(tmpFile.toPath());
1200                             } catch (IOException e) {
1201                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1202                             }
1203                         }
1204                     }
1205                 }
1206                 if (syncMessage.getVerified().isPresent()) {
1207                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1208                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1209                 }
1210                 if (syncMessage.getConfiguration().isPresent()) {
1211                     // TODO
1212                 }
1213             }
1214         }
1215     }
1216
1217     private File getContactAvatarFile(String number) {
1218         return new File(avatarsPath, "contact-" + number);
1219     }
1220
1221     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1222         IOUtils.createPrivateDirectories(avatarsPath);
1223         if (attachment.isPointer()) {
1224             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1225             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1226         } else {
1227             SignalServiceAttachmentStream stream = attachment.asStream();
1228             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1229         }
1230     }
1231
1232     private File getGroupAvatarFile(byte[] groupId) {
1233         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1234     }
1235
1236     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1237         IOUtils.createPrivateDirectories(avatarsPath);
1238         if (attachment.isPointer()) {
1239             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1240             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1241         } else {
1242             SignalServiceAttachmentStream stream = attachment.asStream();
1243             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1244         }
1245     }
1246
1247     public File getAttachmentFile(long attachmentId) {
1248         return new File(attachmentsPath, attachmentId + "");
1249     }
1250
1251     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1252         IOUtils.createPrivateDirectories(attachmentsPath);
1253         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1254     }
1255
1256     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1257         if (storePreview && pointer.getPreview().isPresent()) {
1258             File previewFile = new File(outputFile + ".preview");
1259             try (OutputStream output = new FileOutputStream(previewFile)) {
1260                 byte[] preview = pointer.getPreview().get();
1261                 output.write(preview, 0, preview.length);
1262             } catch (FileNotFoundException e) {
1263                 e.printStackTrace();
1264                 return null;
1265             }
1266         }
1267
1268         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
1269
1270         File tmpFile = IOUtils.createTempFile();
1271         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1272             try (OutputStream output = new FileOutputStream(outputFile)) {
1273                 byte[] buffer = new byte[4096];
1274                 int read;
1275
1276                 while ((read = input.read(buffer)) != -1) {
1277                     output.write(buffer, 0, read);
1278                 }
1279             } catch (FileNotFoundException e) {
1280                 e.printStackTrace();
1281                 return null;
1282             }
1283         } finally {
1284             try {
1285                 Files.delete(tmpFile.toPath());
1286             } catch (IOException e) {
1287                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1288             }
1289         }
1290         return outputFile;
1291     }
1292
1293     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1294         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
1295         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1296     }
1297
1298     @Override
1299     public boolean isRemote() {
1300         return false;
1301     }
1302
1303     private void sendGroups() throws IOException, UntrustedIdentityException {
1304         File groupsFile = IOUtils.createTempFile();
1305
1306         try {
1307             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1308                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1309                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1310                     ThreadInfo info = account.getThreadStore().getThread(Base64.encodeBytes(record.groupId));
1311                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1312                             new ArrayList<>(record.members), createGroupAvatarAttachment(record.groupId),
1313                             record.active, Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1314                             Optional.fromNullable(record.color), false));
1315                 }
1316             }
1317
1318             if (groupsFile.exists() && groupsFile.length() > 0) {
1319                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1320                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1321                             .withStream(groupsFileStream)
1322                             .withContentType("application/octet-stream")
1323                             .withLength(groupsFile.length())
1324                             .build();
1325
1326                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1327                 }
1328             }
1329         } finally {
1330             try {
1331                 Files.delete(groupsFile.toPath());
1332             } catch (IOException e) {
1333                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1334             }
1335         }
1336     }
1337
1338     private void sendContacts() throws IOException, UntrustedIdentityException {
1339         File contactsFile = IOUtils.createTempFile();
1340
1341         try {
1342             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1343                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1344                 for (ContactInfo record : account.getContactStore().getContacts()) {
1345                     VerifiedMessage verifiedMessage = null;
1346                     ThreadInfo info = account.getThreadStore().getThread(record.number);
1347                     if (getIdentities().containsKey(record.number)) {
1348                         JsonIdentityKeyStore.Identity currentIdentity = null;
1349                         for (JsonIdentityKeyStore.Identity id : getIdentities().get(record.number)) {
1350                             if (currentIdentity == null || id.getDateAdded().after(currentIdentity.getDateAdded())) {
1351                                 currentIdentity = id;
1352                             }
1353                         }
1354                         if (currentIdentity != null) {
1355                             verifiedMessage = new VerifiedMessage(record.number, currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1356                         }
1357                     }
1358
1359                     byte[] profileKey = record.profileKey == null ? null : Base64.decode(record.profileKey);
1360                     // TODO store list of blocked numbers
1361                     boolean blocked = false;
1362                     out.write(new DeviceContact(record.number, Optional.fromNullable(record.name),
1363                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1364                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), blocked, Optional.fromNullable(info != null ? info.messageExpirationTime : null)));
1365                 }
1366
1367                 if (account.getProfileKey() != null) {
1368                     // Send our own profile key as well
1369                     out.write(new DeviceContact(account.getUsername(),
1370                             Optional.<String>absent(), Optional.<SignalServiceAttachmentStream>absent(),
1371                             Optional.<String>absent(), Optional.<VerifiedMessage>absent(),
1372                             Optional.of(account.getProfileKey()),
1373                             false, Optional.<Integer>absent()));
1374                 }
1375             }
1376
1377             if (contactsFile.exists() && contactsFile.length() > 0) {
1378                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1379                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1380                             .withStream(contactsFileStream)
1381                             .withContentType("application/octet-stream")
1382                             .withLength(contactsFile.length())
1383                             .build();
1384
1385                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1386                 }
1387             }
1388         } finally {
1389             try {
1390                 Files.delete(contactsFile.toPath());
1391             } catch (IOException e) {
1392                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1393             }
1394         }
1395     }
1396
1397     private void sendVerifiedMessage(String destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1398         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1399         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1400     }
1401
1402     public ContactInfo getContact(String number) {
1403         return account.getContactStore().getContact(number);
1404     }
1405
1406     public GroupInfo getGroup(byte[] groupId) {
1407         return account.getGroupStore().getGroup(groupId);
1408     }
1409
1410     public Map<String, List<JsonIdentityKeyStore.Identity>> getIdentities() {
1411         return account.getSignalProtocolStore().getIdentities();
1412     }
1413
1414     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) {
1415         return account.getSignalProtocolStore().getIdentities(number);
1416     }
1417
1418     /**
1419      * Trust this the identity with this fingerprint
1420      *
1421      * @param name        username of the identity
1422      * @param fingerprint Fingerprint
1423      */
1424     public boolean trustIdentityVerified(String name, byte[] fingerprint) {
1425         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1426         if (ids == null) {
1427             return false;
1428         }
1429         for (JsonIdentityKeyStore.Identity id : ids) {
1430             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1431                 continue;
1432             }
1433
1434             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1435             try {
1436                 sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1437             } catch (IOException | UntrustedIdentityException e) {
1438                 e.printStackTrace();
1439             }
1440             account.save();
1441             return true;
1442         }
1443         return false;
1444     }
1445
1446     /**
1447      * Trust this the identity with this safety number
1448      *
1449      * @param name         username of the identity
1450      * @param safetyNumber Safety number
1451      */
1452     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) {
1453         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1454         if (ids == null) {
1455             return false;
1456         }
1457         for (JsonIdentityKeyStore.Identity id : ids) {
1458             if (!safetyNumber.equals(computeSafetyNumber(name, id.getIdentityKey()))) {
1459                 continue;
1460             }
1461
1462             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1463             try {
1464                 sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1465             } catch (IOException | UntrustedIdentityException e) {
1466                 e.printStackTrace();
1467             }
1468             account.save();
1469             return true;
1470         }
1471         return false;
1472     }
1473
1474     /**
1475      * Trust all keys of this identity without verification
1476      *
1477      * @param name username of the identity
1478      */
1479     public boolean trustIdentityAllKeys(String name) {
1480         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1481         if (ids == null) {
1482             return false;
1483         }
1484         for (JsonIdentityKeyStore.Identity id : ids) {
1485             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1486                 account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1487                 try {
1488                     sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1489                 } catch (IOException | UntrustedIdentityException e) {
1490                     e.printStackTrace();
1491                 }
1492             }
1493         }
1494         account.save();
1495         return true;
1496     }
1497
1498     public String computeSafetyNumber(String theirUsername, IdentityKey theirIdentityKey) {
1499         return Utils.computeSafetyNumber(username, getIdentity(), theirUsername, theirIdentityKey);
1500     }
1501
1502     public interface ReceiveMessageHandler {
1503
1504         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
1505     }
1506 }