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