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

   1 /*
   2   Copyright (C) 2015-2018 AsamK
   3
   4   This program is free software: you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation, either version 3 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.asamk.signal.manager;
  18
  19 import org.asamk.Signal;
  20 import org.asamk.signal.*;
  21 import org.asamk.signal.storage.SignalAccount;
  22 import org.asamk.signal.storage.contacts.ContactInfo;
  23 import org.asamk.signal.storage.groups.GroupInfo;
  24 import org.asamk.signal.storage.groups.JsonGroupStore;
  25 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  26 import org.asamk.signal.storage.threads.ThreadInfo;
  27 import org.asamk.signal.util.IOUtils;
  28 import org.asamk.signal.util.Util;
  29 import org.signal.libsignal.metadata.*;
  30 import org.whispersystems.libsignal.*;
  31 import org.whispersystems.libsignal.ecc.Curve;
  32 import org.whispersystems.libsignal.ecc.ECKeyPair;
  33 import org.whispersystems.libsignal.ecc.ECPublicKey;
  34 import org.whispersystems.libsignal.state.PreKeyRecord;
  35 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  36 import org.whispersystems.libsignal.util.KeyHelper;
  37 import org.whispersystems.libsignal.util.Medium;
  38 import org.whispersystems.libsignal.util.guava.Optional;
  39 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  40 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  41 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  42 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  43 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  44 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  45 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  46 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  47 import org.whispersystems.signalservice.api.messages.*;
  48 import org.whispersystems.signalservice.api.messages.multidevice.*;
  49 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  50 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  51 import org.whispersystems.signalservice.api.push.exceptions.AuthorizationFailedException;
  52 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  53 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  54 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  55 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  56 import org.whispersystems.signalservice.api.util.SleepTimer;
  57 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
  58 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
  59 import org.whispersystems.signalservice.internal.util.Base64;
  60
  61 import java.io.*;
  62 import java.net.URI;
  63 import java.nio.file.Files;
  64 import java.nio.file.Paths;
  65 import java.nio.file.StandardCopyOption;
  66 import java.util.*;
  67 import java.util.concurrent.TimeUnit;
  68 import java.util.concurrent.TimeoutException;
  69
  70 public class Manager implements Signal {
  71
  72     private final String settingsPath;
  73     private final String dataPath;
  74     private final String attachmentsPath;
  75     private final String avatarsPath;
  76
  77     private SignalAccount account;
  78
  79     private String username;
  80     private SignalServiceAccountManager accountManager;
  81     private SignalServiceMessagePipe messagePipe = null;
  82     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
  83
  84     private SleepTimer timer = new UptimeSleepTimer();
  85
  86     public Manager(String username, String settingsPath) {
  87         this.username = username;
  88         this.settingsPath = settingsPath;
  89         this.dataPath = this.settingsPath + "/data";
  90         this.attachmentsPath = this.settingsPath + "/attachments";
  91         this.avatarsPath = this.settingsPath + "/avatars";
  92
  93     }
  94
  95     public String getUsername() {
  96         return username;
  97     }
  98
  99     private IdentityKey getIdentity() {
 100         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
 101     }
 102
 103     public int getDeviceId() {
 104         return account.getDeviceId();
 105     }
 106
 107     private String getMessageCachePath() {
 108         return this.dataPath + "/" + username + ".d/msg-cache";
 109     }
 110
 111     private String getMessageCachePath(String sender) {
 112         return getMessageCachePath() + "/" + sender.replace("/", "_");
 113     }
 114
 115     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 116         String cachePath = getMessageCachePath(sender);
 117         IOUtils.createPrivateDirectories(cachePath);
 118         return new File(cachePath + "/" + now + "_" + timestamp);
 119     }
 120
 121     public boolean userHasKeys() {
 122         return account != null && account.getSignalProtocolStore() != null;
 123     }
 124
 125     public void init() throws IOException {
 126         if (!SignalAccount.userExists(dataPath, username)) {
 127             return;
 128         }
 129         account = SignalAccount.load(dataPath, username);
 130
 131         migrateLegacyConfigs();
 132
 133         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 134         try {
 135             if (account.isRegistered() && accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 136                 refreshPreKeys();
 137                 account.save();
 138             }
 139         } catch (AuthorizationFailedException e) {
 140             System.err.println("Authorization failed, was the number registered elsewhere?");
 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         }
 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();
 194         else
 195             accountManager.requestSmsVerificationCode();
 196
 197         account.setRegistered(false);
 198         account.save();
 199     }
 200
 201     public void updateAccountAttributes() throws IOException {
 202         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), getSelfUnidentifiedAccessKey(), false);
 203     }
 204
 205     public void unregister() throws IOException {
 206         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 207         // If this is the master device, other users can't send messages to this number anymore.
 208         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 209         accountManager.setGcmId(Optional.<String>absent());
 210     }
 211
 212     public String getDeviceLinkUri() throws TimeoutException, IOException {
 213         if (account == null) {
 214             createNewIdentity();
 215         }
 216         account.setPassword(KeyUtils.createPassword());
 217         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, username, account.getPassword(), BaseConfig.USER_AGENT, timer);
 218         String uuid = accountManager.getNewDeviceUuid();
 219
 220         return Utils.createDeviceLinkUri(new Utils.DeviceLinkInfo(uuid, getIdentity().getPublicKey()));
 221     }
 222
 223     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 224         account.setSignalingKey(KeyUtils.createSignalingKey());
 225         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 226
 227         username = ret.getNumber();
 228         // TODO do this check before actually registering
 229         if (SignalAccount.userExists(dataPath, username)) {
 230             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 231         }
 232
 233         // Create new account with the synced identity
 234         byte[] profileKey = ret.getProfileKey();
 235         if (profileKey == null) {
 236             profileKey = KeyUtils.createProfileKey();
 237         }
 238         account = SignalAccount.createLinkedAccount(dataPath, username, account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 239
 240         refreshPreKeys();
 241
 242         requestSyncGroups();
 243         requestSyncContacts();
 244         requestSyncBlocked();
 245         requestSyncConfiguration();
 246
 247         account.save();
 248     }
 249
 250     public List<DeviceInfo> getLinkedDevices() throws IOException {
 251         List<DeviceInfo> devices = accountManager.getDevices();
 252         account.setMultiDevice(devices.size() > 1);
 253         return devices;
 254     }
 255
 256     public void removeLinkedDevices(int deviceId) throws IOException {
 257         accountManager.removeDevice(deviceId);
 258     }
 259
 260     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 261         Utils.DeviceLinkInfo info = Utils.parseDeviceLinkUri(linkUri);
 262
 263         addDevice(info.deviceIdentifier, info.deviceKey);
 264     }
 265
 266     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 267         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 268         String verificationCode = accountManager.getNewDeviceVerificationCode();
 269
 270         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey()), verificationCode);
 271         account.setMultiDevice(true);
 272     }
 273
 274     private List<PreKeyRecord> generatePreKeys() {
 275         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 276
 277         final int offset = account.getPreKeyIdOffset();
 278         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 279             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 280             ECKeyPair keyPair = Curve.generateKeyPair();
 281             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 282
 283             records.add(record);
 284         }
 285
 286         account.addPreKeys(records);
 287         account.save();
 288
 289         return records;
 290     }
 291
 292     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 293         try {
 294             ECKeyPair keyPair = Curve.generateKeyPair();
 295             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 296             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 297
 298             account.addSignedPreKey(record);
 299             account.save();
 300
 301             return record;
 302         } catch (InvalidKeyException e) {
 303             throw new AssertionError(e);
 304         }
 305     }
 306
 307     public void verifyAccount(String verificationCode, String pin) throws IOException {
 308         verificationCode = verificationCode.replace("-", "");
 309         account.setSignalingKey(KeyUtils.createSignalingKey());
 310         // TODO make unrestricted unidentified access configurable
 311         accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, getSelfUnidentifiedAccessKey(), false);
 312
 313         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 314         account.setRegistered(true);
 315         account.setRegistrationLockPin(pin);
 316
 317         refreshPreKeys();
 318         account.save();
 319     }
 320
 321     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 322         accountManager.setPin(pin);
 323         if (pin.isPresent()) {
 324             account.setRegistrationLockPin(pin.get());
 325         } else {
 326             account.setRegistrationLockPin(null);
 327         }
 328         account.save();
 329     }
 330
 331     private void refreshPreKeys() throws IOException {
 332         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 333         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 334         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 335
 336         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 337     }
 338
 339     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 340         File file = getGroupAvatarFile(groupId);
 341         if (!file.exists()) {
 342             return Optional.absent();
 343         }
 344
 345         return Optional.of(Utils.createAttachment(file));
 346     }
 347
 348     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 349         File file = getContactAvatarFile(number);
 350         if (!file.exists()) {
 351             return Optional.absent();
 352         }
 353
 354         return Optional.of(Utils.createAttachment(file));
 355     }
 356
 357     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 358         GroupInfo g = account.getGroupStore().getGroup(groupId);
 359         if (g == null) {
 360             throw new GroupNotFoundException(groupId);
 361         }
 362         for (String member : g.members) {
 363             if (member.equals(this.username)) {
 364                 return g;
 365             }
 366         }
 367         throw new NotAGroupMemberException(groupId, g.name);
 368     }
 369
 370     public List<GroupInfo> getGroups() {
 371         return account.getGroupStore().getGroups();
 372     }
 373
 374     @Override
 375     public void sendGroupMessage(String messageText, List<String> attachments,
 376                                  byte[] groupId)
 377             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 378         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 379         if (attachments != null) {
 380             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 381         }
 382         if (groupId != null) {
 383             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 384                     .withId(groupId)
 385                     .build();
 386             messageBuilder.asGroupMessage(group);
 387         }
 388         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 389         if (thread != null) {
 390             messageBuilder.withExpiration(thread.messageExpirationTime);
 391         }
 392
 393         final GroupInfo g = getGroupForSending(groupId);
 394
 395         // Don't send group message to ourself
 396         final List<String> membersSend = new ArrayList<>(g.members);
 397         membersSend.remove(this.username);
 398         sendMessageLegacy(messageBuilder, membersSend);
 399     }
 400
 401     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 402         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 403                 .withId(groupId)
 404                 .build();
 405
 406         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 407                 .asGroupMessage(group);
 408
 409         final GroupInfo g = getGroupForSending(groupId);
 410         g.members.remove(this.username);
 411         account.getGroupStore().updateGroup(g);
 412
 413         sendMessageLegacy(messageBuilder, g.members);
 414     }
 415
 416     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 417         GroupInfo g;
 418         if (groupId == null) {
 419             // Create new group
 420             g = new GroupInfo(KeyUtils.createGroupId());
 421             g.members.add(username);
 422         } else {
 423             g = getGroupForSending(groupId);
 424         }
 425
 426         if (name != null) {
 427             g.name = name;
 428         }
 429
 430         if (members != null) {
 431             Set<String> newMembers = new HashSet<>();
 432             for (String member : members) {
 433                 try {
 434                     member = Utils.canonicalizeNumber(member, username);
 435                 } catch (InvalidNumberException e) {
 436                     System.err.println("Failed to add member \"" + member + "\" to group: " + e.getMessage());
 437                     System.err.println("Aborting…");
 438                     System.exit(1);
 439                 }
 440                 if (g.members.contains(member)) {
 441                     continue;
 442                 }
 443                 newMembers.add(member);
 444                 g.members.add(member);
 445             }
 446             final List<ContactTokenDetails> contacts = accountManager.getContacts(newMembers);
 447             if (contacts.size() != newMembers.size()) {
 448                 // Some of the new members are not registered on Signal
 449                 for (ContactTokenDetails contact : contacts) {
 450                     newMembers.remove(contact.getNumber());
 451                 }
 452                 System.err.println("Failed to add members " + Util.join(", ", newMembers) + " to group: Not registered on Signal");
 453                 System.err.println("Aborting…");
 454                 System.exit(1);
 455             }
 456         }
 457
 458         if (avatarFile != null) {
 459             IOUtils.createPrivateDirectories(avatarsPath);
 460             File aFile = getGroupAvatarFile(g.groupId);
 461             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 462         }
 463
 464         account.getGroupStore().updateGroup(g);
 465
 466         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 467
 468         // Don't send group message to ourself
 469         final List<String> membersSend = new ArrayList<>(g.members);
 470         membersSend.remove(this.username);
 471         sendMessageLegacy(messageBuilder, membersSend);
 472         return g.groupId;
 473     }
 474
 475     private void sendUpdateGroupMessage(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 476         if (groupId == null) {
 477             return;
 478         }
 479         GroupInfo g = getGroupForSending(groupId);
 480
 481         if (!g.members.contains(recipient)) {
 482             return;
 483         }
 484
 485         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 486
 487         // Send group message only to the recipient who requested it
 488         final List<String> membersSend = new ArrayList<>();
 489         membersSend.add(recipient);
 490         sendMessageLegacy(messageBuilder, membersSend);
 491     }
 492
 493     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 494         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 495                 .withId(g.groupId)
 496                 .withName(g.name)
 497                 .withMembers(new ArrayList<>(g.members));
 498
 499         File aFile = getGroupAvatarFile(g.groupId);
 500         if (aFile.exists()) {
 501             try {
 502                 group.withAvatar(Utils.createAttachment(aFile));
 503             } catch (IOException e) {
 504                 throw new AttachmentInvalidException(aFile.toString(), e);
 505             }
 506         }
 507
 508         return SignalServiceDataMessage.newBuilder()
 509                 .asGroupMessage(group.build());
 510     }
 511
 512     private void sendGroupInfoRequest(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 513         if (groupId == null) {
 514             return;
 515         }
 516
 517         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 518                 .withId(groupId);
 519
 520         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 521                 .asGroupMessage(group.build());
 522
 523         // Send group info request message to the recipient who sent us a message with this groupId
 524         final List<String> membersSend = new ArrayList<>();
 525         membersSend.add(recipient);
 526         sendMessageLegacy(messageBuilder, membersSend);
 527     }
 528
 529     @Override
 530     public void sendMessage(String message, List<String> attachments, String recipient)
 531             throws EncapsulatedExceptions, AttachmentInvalidException, IOException {
 532         List<String> recipients = new ArrayList<>(1);
 533         recipients.add(recipient);
 534         sendMessage(message, attachments, recipients);
 535     }
 536
 537     @Override
 538     public void sendMessage(String messageText, List<String> attachments,
 539                             List<String> recipients)
 540             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 541         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 542         if (attachments != null) {
 543             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 544         }
 545         sendMessageLegacy(messageBuilder, recipients);
 546     }
 547
 548     @Override
 549     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions {
 550         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 551                 .asEndSessionMessage();
 552
 553         sendMessageLegacy(messageBuilder, recipients);
 554     }
 555
 556     @Override
 557     public String getContactName(String number) {
 558         ContactInfo contact = account.getContactStore().getContact(number);
 559         if (contact == null) {
 560             return "";
 561         } else {
 562             return contact.name;
 563         }
 564     }
 565
 566     @Override
 567     public void setContactName(String number, String name) {
 568         ContactInfo contact = account.getContactStore().getContact(number);
 569         if (contact == null) {
 570             contact = new ContactInfo();
 571             contact.number = number;
 572             System.err.println("Add contact " + number + " named " + name);
 573         } else {
 574             System.err.println("Updating contact " + number + " name " + contact.name + " -> " + name);
 575         }
 576         contact.name = name;
 577         account.getContactStore().updateContact(contact);
 578         account.save();
 579     }
 580
 581     @Override
 582     public List<byte[]> getGroupIds() {
 583         List<GroupInfo> groups = getGroups();
 584         List<byte[]> ids = new ArrayList<>(groups.size());
 585         for (GroupInfo group : groups) {
 586             ids.add(group.groupId);
 587         }
 588         return ids;
 589     }
 590
 591     @Override
 592     public String getGroupName(byte[] groupId) {
 593         GroupInfo group = getGroup(groupId);
 594         if (group == null) {
 595             return "";
 596         } else {
 597             return group.name;
 598         }
 599     }
 600
 601     @Override
 602     public List<String> getGroupMembers(byte[] groupId) {
 603         GroupInfo group = getGroup(groupId);
 604         if (group == null) {
 605             return new ArrayList<>();
 606         } else {
 607             return new ArrayList<>(group.members);
 608         }
 609     }
 610
 611     @Override
 612     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 613         if (groupId.length == 0) {
 614             groupId = null;
 615         }
 616         if (name.isEmpty()) {
 617             name = null;
 618         }
 619         if (members.size() == 0) {
 620             members = null;
 621         }
 622         if (avatar.isEmpty()) {
 623             avatar = null;
 624         }
 625         return sendUpdateGroupMessage(groupId, name, members, avatar);
 626     }
 627
 628     /**
 629      * Change the expiration timer for a thread (number of groupId)
 630      *
 631      * @param numberOrGroupId
 632      * @param messageExpirationTimer
 633      */
 634     public void setExpirationTimer(String numberOrGroupId, int messageExpirationTimer) {
 635         ThreadInfo thread = account.getThreadStore().getThread(numberOrGroupId);
 636         thread.messageExpirationTime = messageExpirationTimer;
 637         account.getThreadStore().updateThread(thread);
 638     }
 639
 640     private void requestSyncGroups() throws IOException {
 641         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 642         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 643         try {
 644             sendSyncMessage(message);
 645         } catch (UntrustedIdentityException e) {
 646             e.printStackTrace();
 647         }
 648     }
 649
 650     private void requestSyncContacts() throws IOException {
 651         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).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 requestSyncBlocked() throws IOException {
 661         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).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 requestSyncConfiguration() throws IOException {
 671         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).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 byte[] getSelfUnidentifiedAccessKey() {
 681         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 682     }
 683
 684     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 685         // TODO implement
 686         return null;
 687     }
 688
 689     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 690         // TODO implement
 691         return Optional.absent();
 692     }
 693
 694     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
 695         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
 696         for (SignalServiceAddress recipient : recipients) {
 697             result.add(Optional.<UnidentifiedAccessPair>absent());
 698         }
 699         return result;
 700     }
 701
 702     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
 703         // TODO implement
 704         return Optional.absent();
 705     }
 706
 707     private void sendSyncMessage(SignalServiceSyncMessage message)
 708             throws IOException, UntrustedIdentityException {
 709         SignalServiceMessageSender messageSender = new SignalServiceMessageSender(BaseConfig.serviceConfiguration, username, account.getPassword(),
 710                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 711         try {
 712             messageSender.sendMessage(message, getAccessForSync());
 713         } catch (UntrustedIdentityException e) {
 714             account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 715             throw e;
 716         }
 717     }
 718
 719     /**
 720      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
 721      */
 722     private void sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 723             throws EncapsulatedExceptions, IOException {
 724         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
 725
 726         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
 727         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
 728         List<NetworkFailureException> networkExceptions = new LinkedList<>();
 729
 730         for (SendMessageResult result : results) {
 731             if (result.isUnregisteredFailure()) {
 732                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getNumber(), null));
 733             } else if (result.isNetworkFailure()) {
 734                 networkExceptions.add(new NetworkFailureException(result.getAddress().getNumber(), null));
 735             } else if (result.getIdentityFailure() != null) {
 736                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getNumber(), result.getIdentityFailure().getIdentityKey()));
 737             }
 738         }
 739         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
 740             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
 741         }
 742     }
 743
 744     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 745             throws IOException {
 746         Set<SignalServiceAddress> recipientsTS = Utils.getSignalServiceAddresses(recipients, username);
 747         if (recipientsTS == null) {
 748             account.save();
 749             return Collections.emptyList();
 750         }
 751
 752         SignalServiceDataMessage message = null;
 753         try {
 754             SignalServiceMessageSender messageSender = new SignalServiceMessageSender(BaseConfig.serviceConfiguration, username, account.getPassword(),
 755                     account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 756
 757             message = messageBuilder.build();
 758             if (message.getGroupInfo().isPresent()) {
 759                 try {
 760                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipientsTS), getAccessFor(recipientsTS), message);
 761                     for (SendMessageResult r : result) {
 762                         if (r.getIdentityFailure() != null) {
 763                             account.getSignalProtocolStore().saveIdentity(r.getAddress().getNumber(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
 764                         }
 765                     }
 766                     return result;
 767                 } catch (UntrustedIdentityException e) {
 768                     account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 769                     return Collections.emptyList();
 770                 }
 771             } else {
 772                 // Send to all individually, so sync messages are sent correctly
 773                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 774                 for (SignalServiceAddress address : recipientsTS) {
 775                     ThreadInfo thread = account.getThreadStore().getThread(address.getNumber());
 776                     if (thread != null) {
 777                         messageBuilder.withExpiration(thread.messageExpirationTime);
 778                     } else {
 779                         messageBuilder.withExpiration(0);
 780                     }
 781                     message = messageBuilder.build();
 782                     try {
 783                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
 784                         results.add(result);
 785                     } catch (UntrustedIdentityException e) {
 786                         account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 787                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
 788                     }
 789                 }
 790                 return results;
 791             }
 792         } finally {
 793             if (message != null && message.isEndSession()) {
 794                 for (SignalServiceAddress recipient : recipientsTS) {
 795                     handleEndSession(recipient.getNumber());
 796                 }
 797             }
 798             account.save();
 799         }
 800     }
 801
 802     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, ProtocolUntrustedIdentityException, SelfSendException {
 803         SignalServiceCipher cipher = new SignalServiceCipher(new SignalServiceAddress(username), account.getSignalProtocolStore(), Utils.getCertificateValidator());
 804         try {
 805             return cipher.decrypt(envelope);
 806         } catch (ProtocolUntrustedIdentityException e) {
 807             // TODO We don't get the new untrusted identity from ProtocolUntrustedIdentityException anymore ... we need to get it from somewhere else
 808 //            account.getSignalProtocolStore().saveIdentity(e.getSender(), e.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
 809             throw e;
 810         }
 811     }
 812
 813     private void handleEndSession(String source) {
 814         account.getSignalProtocolStore().deleteAllSessions(source);
 815     }
 816
 817     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, String source, String destination, boolean ignoreAttachments) {
 818         String threadId;
 819         if (message.getGroupInfo().isPresent()) {
 820             SignalServiceGroup groupInfo = message.getGroupInfo().get();
 821             threadId = Base64.encodeBytes(groupInfo.getGroupId());
 822             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
 823             switch (groupInfo.getType()) {
 824                 case UPDATE:
 825                     if (group == null) {
 826                         group = new GroupInfo(groupInfo.getGroupId());
 827                     }
 828
 829                     if (groupInfo.getAvatar().isPresent()) {
 830                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
 831                         if (avatar.isPointer()) {
 832                             try {
 833                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
 834                             } catch (IOException | InvalidMessageException e) {
 835                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
 836                             }
 837                         }
 838                     }
 839
 840                     if (groupInfo.getName().isPresent()) {
 841                         group.name = groupInfo.getName().get();
 842                     }
 843
 844                     if (groupInfo.getMembers().isPresent()) {
 845                         group.members.addAll(groupInfo.getMembers().get());
 846                     }
 847
 848                     account.getGroupStore().updateGroup(group);
 849                     break;
 850                 case DELIVER:
 851                     if (group == null) {
 852                         try {
 853                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 854                         } catch (IOException | EncapsulatedExceptions e) {
 855                             e.printStackTrace();
 856                         }
 857                     }
 858                     break;
 859                 case QUIT:
 860                     if (group == null) {
 861                         try {
 862                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 863                         } catch (IOException | EncapsulatedExceptions e) {
 864                             e.printStackTrace();
 865                         }
 866                     } else {
 867                         group.members.remove(source);
 868                         account.getGroupStore().updateGroup(group);
 869                     }
 870                     break;
 871                 case REQUEST_INFO:
 872                     if (group != null) {
 873                         try {
 874                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
 875                         } catch (IOException | EncapsulatedExceptions e) {
 876                             e.printStackTrace();
 877                         } catch (NotAGroupMemberException e) {
 878                             // We have left this group, so don't send a group update message
 879                         }
 880                     }
 881                     break;
 882             }
 883         } else {
 884             if (isSync) {
 885                 threadId = destination;
 886             } else {
 887                 threadId = source;
 888             }
 889         }
 890         if (message.isEndSession()) {
 891             handleEndSession(isSync ? destination : source);
 892         }
 893         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
 894             ThreadInfo thread = account.getThreadStore().getThread(threadId);
 895             if (thread == null) {
 896                 thread = new ThreadInfo();
 897                 thread.id = threadId;
 898             }
 899             if (thread.messageExpirationTime != message.getExpiresInSeconds()) {
 900                 thread.messageExpirationTime = message.getExpiresInSeconds();
 901                 account.getThreadStore().updateThread(thread);
 902             }
 903         }
 904         if (message.getAttachments().isPresent() && !ignoreAttachments) {
 905             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
 906                 if (attachment.isPointer()) {
 907                     try {
 908                         retrieveAttachment(attachment.asPointer());
 909                     } catch (IOException | InvalidMessageException e) {
 910                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
 911                     }
 912                 }
 913             }
 914         }
 915         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
 916             if (source.equals(username)) {
 917                 this.account.setProfileKey(message.getProfileKey().get());
 918             }
 919             ContactInfo contact = account.getContactStore().getContact(source);
 920             if (contact == null) {
 921                 contact = new ContactInfo();
 922                 contact.number = source;
 923             }
 924             contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
 925         }
 926     }
 927
 928     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
 929         final File cachePath = new File(getMessageCachePath());
 930         if (!cachePath.exists()) {
 931             return;
 932         }
 933         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
 934             if (!dir.isDirectory()) {
 935                 continue;
 936             }
 937
 938             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
 939                 if (!fileEntry.isFile()) {
 940                     continue;
 941                 }
 942                 SignalServiceEnvelope envelope;
 943                 try {
 944                     envelope = Utils.loadEnvelope(fileEntry);
 945                     if (envelope == null) {
 946                         continue;
 947                     }
 948                 } catch (IOException e) {
 949                     e.printStackTrace();
 950                     continue;
 951                 }
 952                 SignalServiceContent content = null;
 953                 if (!envelope.isReceipt()) {
 954                     try {
 955                         content = decryptMessage(envelope);
 956                     } catch (Exception e) {
 957                         continue;
 958                     }
 959                     handleMessage(envelope, content, ignoreAttachments);
 960                 }
 961                 account.save();
 962                 handler.handleMessage(envelope, content, null);
 963                 try {
 964                     Files.delete(fileEntry.toPath());
 965                 } catch (IOException e) {
 966                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
 967                 }
 968             }
 969             // Try to delete directory if empty
 970             dir.delete();
 971         }
 972     }
 973
 974     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
 975         retryFailedReceivedMessages(handler, ignoreAttachments);
 976         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
 977
 978         try {
 979             if (messagePipe == null) {
 980                 messagePipe = messageReceiver.createMessagePipe();
 981             }
 982
 983             while (true) {
 984                 SignalServiceEnvelope envelope;
 985                 SignalServiceContent content = null;
 986                 Exception exception = null;
 987                 final long now = new Date().getTime();
 988                 try {
 989                     envelope = messagePipe.read(timeout, unit, new SignalServiceMessagePipe.MessagePipeCallback() {
 990                         @Override
 991                         public void onMessage(SignalServiceEnvelope envelope) {
 992                             // store message on disk, before acknowledging receipt to the server
 993                             try {
 994                                 File cacheFile = getMessageCacheFile(envelope.getSource(), now, envelope.getTimestamp());
 995                                 Utils.storeEnvelope(envelope, cacheFile);
 996                             } catch (IOException e) {
 997                                 System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
 998                             }
 999                         }
1000                     });
1001                 } catch (TimeoutException e) {
1002                     if (returnOnTimeout)
1003                         return;
1004                     continue;
1005                 } catch (InvalidVersionException e) {
1006                     System.err.println("Ignoring error: " + e.getMessage());
1007                     continue;
1008                 }
1009                 if (!envelope.isReceipt()) {
1010                     try {
1011                         content = decryptMessage(envelope);
1012                     } catch (Exception e) {
1013                         exception = e;
1014                     }
1015                     handleMessage(envelope, content, ignoreAttachments);
1016                 }
1017                 account.save();
1018                 handler.handleMessage(envelope, content, exception);
1019                 if (!(exception instanceof ProtocolUntrustedIdentityException)) {
1020                     File cacheFile = null;
1021                     try {
1022                         cacheFile = getMessageCacheFile(envelope.getSource(), now, envelope.getTimestamp());
1023                         Files.delete(cacheFile.toPath());
1024                         // Try to delete directory if empty
1025                         new File(getMessageCachePath()).delete();
1026                     } catch (IOException e) {
1027                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1028                     }
1029                 }
1030             }
1031         } finally {
1032             if (messagePipe != null) {
1033                 messagePipe.shutdown();
1034                 messagePipe = null;
1035             }
1036         }
1037     }
1038
1039     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1040         if (content != null) {
1041             if (content.getDataMessage().isPresent()) {
1042                 SignalServiceDataMessage message = content.getDataMessage().get();
1043                 handleSignalServiceDataMessage(message, false, envelope.getSource(), username, ignoreAttachments);
1044             }
1045             if (content.getSyncMessage().isPresent()) {
1046                 account.setMultiDevice(true);
1047                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1048                 if (syncMessage.getSent().isPresent()) {
1049                     SignalServiceDataMessage message = syncMessage.getSent().get().getMessage();
1050                     handleSignalServiceDataMessage(message, true, envelope.getSource(), syncMessage.getSent().get().getDestination().get(), ignoreAttachments);
1051                 }
1052                 if (syncMessage.getRequest().isPresent()) {
1053                     RequestMessage rm = syncMessage.getRequest().get();
1054                     if (rm.isContactsRequest()) {
1055                         try {
1056                             sendContacts();
1057                         } catch (UntrustedIdentityException | IOException e) {
1058                             e.printStackTrace();
1059                         }
1060                     }
1061                     if (rm.isGroupsRequest()) {
1062                         try {
1063                             sendGroups();
1064                         } catch (UntrustedIdentityException | IOException e) {
1065                             e.printStackTrace();
1066                         }
1067                     }
1068                     // TODO Handle rm.isBlockedListRequest(); rm.isConfigurationRequest();
1069                 }
1070                 if (syncMessage.getGroups().isPresent()) {
1071                     File tmpFile = null;
1072                     try {
1073                         tmpFile = IOUtils.createTempFile();
1074                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1075                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1076                             DeviceGroup g;
1077                             while ((g = s.read()) != null) {
1078                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1079                                 if (syncGroup == null) {
1080                                     syncGroup = new GroupInfo(g.getId());
1081                                 }
1082                                 if (g.getName().isPresent()) {
1083                                     syncGroup.name = g.getName().get();
1084                                 }
1085                                 syncGroup.members.addAll(g.getMembers());
1086                                 syncGroup.active = g.isActive();
1087                                 if (g.getColor().isPresent()) {
1088                                     syncGroup.color = g.getColor().get();
1089                                 }
1090
1091                                 if (g.getAvatar().isPresent()) {
1092                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1093                                 }
1094                                 account.getGroupStore().updateGroup(syncGroup);
1095                             }
1096                         }
1097                     } catch (Exception e) {
1098                         e.printStackTrace();
1099                     } finally {
1100                         if (tmpFile != null) {
1101                             try {
1102                                 Files.delete(tmpFile.toPath());
1103                             } catch (IOException e) {
1104                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1105                             }
1106                         }
1107                     }
1108                 }
1109                 if (syncMessage.getBlockedList().isPresent()) {
1110                     // TODO store list of blocked numbers
1111                 }
1112                 if (syncMessage.getContacts().isPresent()) {
1113                     File tmpFile = null;
1114                     try {
1115                         tmpFile = IOUtils.createTempFile();
1116                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1117                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1118                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1119                             if (contactsMessage.isComplete()) {
1120                                 account.getContactStore().clear();
1121                             }
1122                             DeviceContact c;
1123                             while ((c = s.read()) != null) {
1124                                 if (c.getNumber().equals(account.getUsername()) && c.getProfileKey().isPresent()) {
1125                                     account.setProfileKey(c.getProfileKey().get());
1126                                 }
1127                                 ContactInfo contact = account.getContactStore().getContact(c.getNumber());
1128                                 if (contact == null) {
1129                                     contact = new ContactInfo();
1130                                     contact.number = c.getNumber();
1131                                 }
1132                                 if (c.getName().isPresent()) {
1133                                     contact.name = c.getName().get();
1134                                 }
1135                                 if (c.getColor().isPresent()) {
1136                                     contact.color = c.getColor().get();
1137                                 }
1138                                 if (c.getProfileKey().isPresent()) {
1139                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get());
1140                                 }
1141                                 if (c.getVerified().isPresent()) {
1142                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1143                                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1144                                 }
1145                                 if (c.getExpirationTimer().isPresent()) {
1146                                     ThreadInfo thread = account.getThreadStore().getThread(c.getNumber());
1147                                     thread.messageExpirationTime = c.getExpirationTimer().get();
1148                                     account.getThreadStore().updateThread(thread);
1149                                 }
1150                                 if (c.isBlocked()) {
1151                                     // TODO store list of blocked numbers
1152                                 }
1153                                 account.getContactStore().updateContact(contact);
1154
1155                                 if (c.getAvatar().isPresent()) {
1156                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1157                                 }
1158                             }
1159                         }
1160                     } catch (Exception e) {
1161                         e.printStackTrace();
1162                     } finally {
1163                         if (tmpFile != null) {
1164                             try {
1165                                 Files.delete(tmpFile.toPath());
1166                             } catch (IOException e) {
1167                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1168                             }
1169                         }
1170                     }
1171                 }
1172                 if (syncMessage.getVerified().isPresent()) {
1173                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1174                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1175                 }
1176                 if (syncMessage.getConfiguration().isPresent()) {
1177                     // TODO
1178                 }
1179             }
1180         }
1181     }
1182
1183     private File getContactAvatarFile(String number) {
1184         return new File(avatarsPath, "contact-" + number);
1185     }
1186
1187     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1188         IOUtils.createPrivateDirectories(avatarsPath);
1189         if (attachment.isPointer()) {
1190             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1191             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1192         } else {
1193             SignalServiceAttachmentStream stream = attachment.asStream();
1194             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1195         }
1196     }
1197
1198     private File getGroupAvatarFile(byte[] groupId) {
1199         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1200     }
1201
1202     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1203         IOUtils.createPrivateDirectories(avatarsPath);
1204         if (attachment.isPointer()) {
1205             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1206             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1207         } else {
1208             SignalServiceAttachmentStream stream = attachment.asStream();
1209             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1210         }
1211     }
1212
1213     public File getAttachmentFile(long attachmentId) {
1214         return new File(attachmentsPath, attachmentId + "");
1215     }
1216
1217     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1218         IOUtils.createPrivateDirectories(attachmentsPath);
1219         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1220     }
1221
1222     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1223         if (storePreview && pointer.getPreview().isPresent()) {
1224             File previewFile = new File(outputFile + ".preview");
1225             try (OutputStream output = new FileOutputStream(previewFile)) {
1226                 byte[] preview = pointer.getPreview().get();
1227                 output.write(preview, 0, preview.length);
1228             } catch (FileNotFoundException e) {
1229                 e.printStackTrace();
1230                 return null;
1231             }
1232         }
1233
1234         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
1235
1236         File tmpFile = IOUtils.createTempFile();
1237         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1238             try (OutputStream output = new FileOutputStream(outputFile)) {
1239                 byte[] buffer = new byte[4096];
1240                 int read;
1241
1242                 while ((read = input.read(buffer)) != -1) {
1243                     output.write(buffer, 0, read);
1244                 }
1245             } catch (FileNotFoundException e) {
1246                 e.printStackTrace();
1247                 return null;
1248             }
1249         } finally {
1250             try {
1251                 Files.delete(tmpFile.toPath());
1252             } catch (IOException e) {
1253                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1254             }
1255         }
1256         return outputFile;
1257     }
1258
1259     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1260         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
1261         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1262     }
1263
1264     @Override
1265     public boolean isRemote() {
1266         return false;
1267     }
1268
1269     private void sendGroups() throws IOException, UntrustedIdentityException {
1270         File groupsFile = IOUtils.createTempFile();
1271
1272         try {
1273             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1274                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1275                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1276                     ThreadInfo info = account.getThreadStore().getThread(Base64.encodeBytes(record.groupId));
1277                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1278                             new ArrayList<>(record.members), createGroupAvatarAttachment(record.groupId),
1279                             record.active, Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1280                             Optional.fromNullable(record.color), false));
1281                 }
1282             }
1283
1284             if (groupsFile.exists() && groupsFile.length() > 0) {
1285                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1286                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1287                             .withStream(groupsFileStream)
1288                             .withContentType("application/octet-stream")
1289                             .withLength(groupsFile.length())
1290                             .build();
1291
1292                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1293                 }
1294             }
1295         } finally {
1296             try {
1297                 Files.delete(groupsFile.toPath());
1298             } catch (IOException e) {
1299                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1300             }
1301         }
1302     }
1303
1304     private void sendContacts() throws IOException, UntrustedIdentityException {
1305         File contactsFile = IOUtils.createTempFile();
1306
1307         try {
1308             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1309                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1310                 for (ContactInfo record : account.getContactStore().getContacts()) {
1311                     VerifiedMessage verifiedMessage = null;
1312                     ThreadInfo info = account.getThreadStore().getThread(record.number);
1313                     if (getIdentities().containsKey(record.number)) {
1314                         JsonIdentityKeyStore.Identity currentIdentity = null;
1315                         for (JsonIdentityKeyStore.Identity id : getIdentities().get(record.number)) {
1316                             if (currentIdentity == null || id.getDateAdded().after(currentIdentity.getDateAdded())) {
1317                                 currentIdentity = id;
1318                             }
1319                         }
1320                         if (currentIdentity != null) {
1321                             verifiedMessage = new VerifiedMessage(record.number, currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1322                         }
1323                     }
1324
1325                     byte[] profileKey = record.profileKey == null ? null : Base64.decode(record.profileKey);
1326                     // TODO store list of blocked numbers
1327                     boolean blocked = false;
1328                     out.write(new DeviceContact(record.number, Optional.fromNullable(record.name),
1329                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1330                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), blocked, Optional.fromNullable(info != null ? info.messageExpirationTime : null)));
1331                 }
1332
1333                 if (account.getProfileKey() != null) {
1334                     // Send our own profile key as well
1335                     out.write(new DeviceContact(account.getUsername(),
1336                             Optional.<String>absent(), Optional.<SignalServiceAttachmentStream>absent(),
1337                             Optional.<String>absent(), Optional.<VerifiedMessage>absent(),
1338                             Optional.of(account.getProfileKey()),
1339                             false, Optional.<Integer>absent()));
1340                 }
1341             }
1342
1343             if (contactsFile.exists() && contactsFile.length() > 0) {
1344                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1345                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1346                             .withStream(contactsFileStream)
1347                             .withContentType("application/octet-stream")
1348                             .withLength(contactsFile.length())
1349                             .build();
1350
1351                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1352                 }
1353             }
1354         } finally {
1355             try {
1356                 Files.delete(contactsFile.toPath());
1357             } catch (IOException e) {
1358                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1359             }
1360         }
1361     }
1362
1363     private void sendVerifiedMessage(String destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1364         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1365         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1366     }
1367
1368     public ContactInfo getContact(String number) {
1369         return account.getContactStore().getContact(number);
1370     }
1371
1372     public GroupInfo getGroup(byte[] groupId) {
1373         return account.getGroupStore().getGroup(groupId);
1374     }
1375
1376     public Map<String, List<JsonIdentityKeyStore.Identity>> getIdentities() {
1377         return account.getSignalProtocolStore().getIdentities();
1378     }
1379
1380     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) {
1381         return account.getSignalProtocolStore().getIdentities(number);
1382     }
1383
1384     /**
1385      * Trust this the identity with this fingerprint
1386      *
1387      * @param name        username of the identity
1388      * @param fingerprint Fingerprint
1389      */
1390     public boolean trustIdentityVerified(String name, byte[] fingerprint) {
1391         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1392         if (ids == null) {
1393             return false;
1394         }
1395         for (JsonIdentityKeyStore.Identity id : ids) {
1396             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1397                 continue;
1398             }
1399
1400             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1401             try {
1402                 sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1403             } catch (IOException | UntrustedIdentityException e) {
1404                 e.printStackTrace();
1405             }
1406             account.save();
1407             return true;
1408         }
1409         return false;
1410     }
1411
1412     /**
1413      * Trust this the identity with this safety number
1414      *
1415      * @param name         username of the identity
1416      * @param safetyNumber Safety number
1417      */
1418     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) {
1419         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1420         if (ids == null) {
1421             return false;
1422         }
1423         for (JsonIdentityKeyStore.Identity id : ids) {
1424             if (!safetyNumber.equals(computeSafetyNumber(name, id.getIdentityKey()))) {
1425                 continue;
1426             }
1427
1428             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1429             try {
1430                 sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1431             } catch (IOException | UntrustedIdentityException e) {
1432                 e.printStackTrace();
1433             }
1434             account.save();
1435             return true;
1436         }
1437         return false;
1438     }
1439
1440     /**
1441      * Trust all keys of this identity without verification
1442      *
1443      * @param name username of the identity
1444      */
1445     public boolean trustIdentityAllKeys(String name) {
1446         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1447         if (ids == null) {
1448             return false;
1449         }
1450         for (JsonIdentityKeyStore.Identity id : ids) {
1451             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1452                 account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1453                 try {
1454                     sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1455                 } catch (IOException | UntrustedIdentityException e) {
1456                     e.printStackTrace();
1457                 }
1458             }
1459         }
1460         account.save();
1461         return true;
1462     }
1463
1464     public String computeSafetyNumber(String theirUsername, IdentityKey theirIdentityKey) {
1465         return Utils.computeSafetyNumber(username, getIdentity(), theirUsername, theirIdentityKey);
1466     }
1467
1468     public interface ReceiveMessageHandler {
1469
1470         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
1471     }
1472 }