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.apache.http.util.TextUtils;
  20 import org.asamk.Signal;
  21 import org.asamk.signal.*;
  22 import org.asamk.signal.storage.SignalAccount;
  23 import org.asamk.signal.storage.contacts.ContactInfo;
  24 import org.asamk.signal.storage.groups.GroupInfo;
  25 import org.asamk.signal.storage.groups.JsonGroupStore;
  26 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  27 import org.asamk.signal.storage.threads.ThreadInfo;
  28 import org.asamk.signal.util.IOUtils;
  29 import org.asamk.signal.util.Util;
  30 import org.signal.libsignal.metadata.*;
  31 import org.signal.libsignal.metadata.certificate.CertificateValidator;
  32 import org.whispersystems.libsignal.*;
  33 import org.whispersystems.libsignal.ecc.Curve;
  34 import org.whispersystems.libsignal.ecc.ECKeyPair;
  35 import org.whispersystems.libsignal.ecc.ECPublicKey;
  36 import org.whispersystems.libsignal.fingerprint.Fingerprint;
  37 import org.whispersystems.libsignal.fingerprint.NumericFingerprintGenerator;
  38 import org.whispersystems.libsignal.state.PreKeyRecord;
  39 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  40 import org.whispersystems.libsignal.util.KeyHelper;
  41 import org.whispersystems.libsignal.util.Medium;
  42 import org.whispersystems.libsignal.util.guava.Optional;
  43 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  44 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  45 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  46 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  47 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  48 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccess;
  49 import org.whispersystems.signalservice.api.crypto.UnidentifiedAccessPair;
  50 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  51 import org.whispersystems.signalservice.api.messages.*;
  52 import org.whispersystems.signalservice.api.messages.multidevice.*;
  53 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
  54 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  55 import org.whispersystems.signalservice.api.push.exceptions.AuthorizationFailedException;
  56 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  57 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  58 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  59 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  60 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
  61 import org.whispersystems.signalservice.api.util.SleepTimer;
  62 import org.whispersystems.signalservice.api.util.UptimeSleepTimer;
  63 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
  64 import org.whispersystems.signalservice.internal.util.Base64;
  65
  66 import java.io.*;
  67 import java.net.URI;
  68 import java.net.URISyntaxException;
  69 import java.net.URLEncoder;
  70 import java.nio.file.Files;
  71 import java.nio.file.Paths;
  72 import java.nio.file.StandardCopyOption;
  73 import java.util.*;
  74 import java.util.concurrent.TimeUnit;
  75 import java.util.concurrent.TimeoutException;
  76
  77 public class Manager implements Signal {
  78
  79     private final String settingsPath;
  80     private final String dataPath;
  81     private final String attachmentsPath;
  82     private final String avatarsPath;
  83
  84     private SignalAccount account;
  85
  86     private String username;
  87     private SignalServiceAccountManager accountManager;
  88     private SignalServiceMessagePipe messagePipe = null;
  89     private SignalServiceMessagePipe unidentifiedMessagePipe = null;
  90
  91     private SleepTimer timer = new UptimeSleepTimer();
  92
  93     public Manager(String username, String settingsPath) {
  94         this.username = username;
  95         this.settingsPath = settingsPath;
  96         this.dataPath = this.settingsPath + "/data";
  97         this.attachmentsPath = this.settingsPath + "/attachments";
  98         this.avatarsPath = this.settingsPath + "/avatars";
  99
 100     }
 101
 102     private static List<SignalServiceAttachment> getSignalServiceAttachments(List<String> attachments) throws AttachmentInvalidException {
 103         List<SignalServiceAttachment> SignalServiceAttachments = null;
 104         if (attachments != null) {
 105             SignalServiceAttachments = new ArrayList<>(attachments.size());
 106             for (String attachment : attachments) {
 107                 try {
 108                     SignalServiceAttachments.add(createAttachment(new File(attachment)));
 109                 } catch (IOException e) {
 110                     throw new AttachmentInvalidException(attachment, e);
 111                 }
 112             }
 113         }
 114         return SignalServiceAttachments;
 115     }
 116
 117     private static SignalServiceAttachmentStream createAttachment(File attachmentFile) throws IOException {
 118         InputStream attachmentStream = new FileInputStream(attachmentFile);
 119         final long attachmentSize = attachmentFile.length();
 120         String mime = Files.probeContentType(attachmentFile.toPath());
 121         if (mime == null) {
 122             mime = "application/octet-stream";
 123         }
 124         // TODO mabybe add a parameter to set the voiceNote, preview, width, height and caption option
 125         Optional<byte[]> preview = Optional.absent();
 126         Optional<String> caption = Optional.absent();
 127         return new SignalServiceAttachmentStream(attachmentStream, mime, attachmentSize, Optional.of(attachmentFile.getName()), false, preview, 0, 0, caption, null);
 128     }
 129
 130     private static CertificateValidator getCertificateValidator() {
 131         try {
 132             ECPublicKey unidentifiedSenderTrustRoot = Curve.decodePoint(Base64.decode(BaseConfig.UNIDENTIFIED_SENDER_TRUST_ROOT), 0);
 133             return new CertificateValidator(unidentifiedSenderTrustRoot);
 134         } catch (InvalidKeyException | IOException e) {
 135             throw new AssertionError(e);
 136         }
 137     }
 138
 139     public String getUsername() {
 140         return username;
 141     }
 142
 143     private IdentityKey getIdentity() {
 144         return account.getSignalProtocolStore().getIdentityKeyPair().getPublicKey();
 145     }
 146
 147     public int getDeviceId() {
 148         return account.getDeviceId();
 149     }
 150
 151     private String getMessageCachePath() {
 152         return this.dataPath + "/" + username + ".d/msg-cache";
 153     }
 154
 155     private String getMessageCachePath(String sender) {
 156         return getMessageCachePath() + "/" + sender.replace("/", "_");
 157     }
 158
 159     private File getMessageCacheFile(String sender, long now, long timestamp) throws IOException {
 160         String cachePath = getMessageCachePath(sender);
 161         IOUtils.createPrivateDirectories(cachePath);
 162         return new File(cachePath + "/" + now + "_" + timestamp);
 163     }
 164
 165     public boolean userHasKeys() {
 166         return account.getSignalProtocolStore() != null;
 167     }
 168
 169     public void init() throws IOException {
 170         if (!SignalAccount.userExists(dataPath, username)) {
 171             return;
 172         }
 173         account = SignalAccount.load(dataPath, username);
 174
 175         migrateLegacyConfigs();
 176
 177         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), BaseConfig.USER_AGENT, timer);
 178         try {
 179             if (account.isRegistered() && accountManager.getPreKeysCount() < BaseConfig.PREKEY_MINIMUM_COUNT) {
 180                 refreshPreKeys();
 181                 account.save();
 182             }
 183         } catch (AuthorizationFailedException e) {
 184             System.err.println("Authorization failed, was the number registered elsewhere?");
 185         }
 186     }
 187
 188     private void migrateLegacyConfigs() {
 189         // Copy group avatars that were previously stored in the attachments folder
 190         // to the new avatar folder
 191         if (JsonGroupStore.groupsWithLegacyAvatarId.size() > 0) {
 192             for (GroupInfo g : JsonGroupStore.groupsWithLegacyAvatarId) {
 193                 File avatarFile = getGroupAvatarFile(g.groupId);
 194                 File attachmentFile = getAttachmentFile(g.getAvatarId());
 195                 if (!avatarFile.exists() && attachmentFile.exists()) {
 196                     try {
 197                         IOUtils.createPrivateDirectories(avatarsPath);
 198                         Files.copy(attachmentFile.toPath(), avatarFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 199                     } catch (Exception e) {
 200                         // Ignore
 201                     }
 202                 }
 203             }
 204             JsonGroupStore.groupsWithLegacyAvatarId.clear();
 205             account.save();
 206         }
 207         if (account.getProfileKey() == null) {
 208             // Old config file, creating new profile key
 209             account.setProfileKey(KeyUtils.createProfileKey());
 210         }
 211     }
 212
 213     private void createNewIdentity() throws IOException {
 214         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 215         int registrationId = KeyHelper.generateRegistrationId(false);
 216         if (username == null) {
 217             account = SignalAccount.createTemporaryAccount(identityKey, registrationId);
 218         } else {
 219             byte[] profileKey = KeyUtils.createProfileKey();
 220             account = SignalAccount.create(dataPath, username, identityKey, registrationId, profileKey);
 221             account.save();
 222         }
 223     }
 224
 225     public boolean isRegistered() {
 226         return account != null && account.isRegistered();
 227     }
 228
 229     public void register(boolean voiceVerification) throws IOException {
 230         if (account == null) {
 231             createNewIdentity();
 232         }
 233         account.setPassword(KeyUtils.createPassword());
 234         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, account.getUsername(), account.getPassword(), BaseConfig.USER_AGENT, timer);
 235
 236         if (voiceVerification)
 237             accountManager.requestVoiceVerificationCode();
 238         else
 239             accountManager.requestSmsVerificationCode();
 240
 241         account.setRegistered(false);
 242         account.save();
 243     }
 244
 245     public void updateAccountAttributes() throws IOException {
 246         accountManager.setAccountAttributes(account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, account.getRegistrationLockPin(), getSelfUnidentifiedAccessKey(), false);
 247     }
 248
 249     public void unregister() throws IOException {
 250         // When setting an empty GCM id, the Signal-Server also sets the fetchesMessages property to false.
 251         // If this is the master device, other users can't send messages to this number anymore.
 252         // If this is a linked device, other users can still send messages, but this device doesn't receive them anymore.
 253         accountManager.setGcmId(Optional.<String>absent());
 254     }
 255
 256     public URI getDeviceLinkUri() throws TimeoutException, IOException {
 257         if (account == null) {
 258             createNewIdentity();
 259         }
 260         account.setPassword(KeyUtils.createPassword());
 261         accountManager = new SignalServiceAccountManager(BaseConfig.serviceConfiguration, username, account.getPassword(), BaseConfig.USER_AGENT, timer);
 262         String uuid = accountManager.getNewDeviceUuid();
 263
 264         try {
 265             return new URI("tsdevice:/?uuid=" + URLEncoder.encode(uuid, "utf-8") + "&pub_key=" + URLEncoder.encode(Base64.encodeBytesWithoutPadding(getIdentity().serialize()), "utf-8"));
 266         } catch (URISyntaxException e) {
 267             // Shouldn't happen
 268             return null;
 269         }
 270     }
 271
 272     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 273         account.setSignalingKey(KeyUtils.createSignalingKey());
 274         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(account.getSignalProtocolStore().getIdentityKeyPair(), account.getSignalingKey(), false, true, account.getSignalProtocolStore().getLocalRegistrationId(), deviceName);
 275
 276         username = ret.getNumber();
 277         // TODO do this check before actually registering
 278         if (SignalAccount.userExists(dataPath, username)) {
 279             throw new UserAlreadyExists(username, SignalAccount.getFileName(dataPath, username));
 280         }
 281
 282         // Create new account with the synced identity
 283         byte[] profileKey = ret.getProfileKey();
 284         if (profileKey == null) {
 285             profileKey = KeyUtils.createProfileKey();
 286         }
 287         account = SignalAccount.createLinkedAccount(dataPath, username, account.getPassword(), ret.getDeviceId(), ret.getIdentity(), account.getSignalProtocolStore().getLocalRegistrationId(), account.getSignalingKey(), profileKey);
 288
 289         refreshPreKeys();
 290
 291         requestSyncGroups();
 292         requestSyncContacts();
 293
 294         account.save();
 295     }
 296
 297     public List<DeviceInfo> getLinkedDevices() throws IOException {
 298         List<DeviceInfo> devices = accountManager.getDevices();
 299         account.setMultiDevice(devices.size() > 1);
 300         return devices;
 301     }
 302
 303     public void removeLinkedDevices(int deviceId) throws IOException {
 304         accountManager.removeDevice(deviceId);
 305     }
 306
 307     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 308         Map<String, String> query = Util.getQueryMap(linkUri.getRawQuery());
 309         String deviceIdentifier = query.get("uuid");
 310         String publicKeyEncoded = query.get("pub_key");
 311
 312         if (TextUtils.isEmpty(deviceIdentifier) || TextUtils.isEmpty(publicKeyEncoded)) {
 313             throw new RuntimeException("Invalid device link uri");
 314         }
 315
 316         ECPublicKey deviceKey = Curve.decodePoint(Base64.decode(publicKeyEncoded), 0);
 317
 318         addDevice(deviceIdentifier, deviceKey);
 319     }
 320
 321     private void addDevice(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 322         IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 323         String verificationCode = accountManager.getNewDeviceVerificationCode();
 324
 325         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, Optional.of(account.getProfileKey()), verificationCode);
 326         account.setMultiDevice(true);
 327     }
 328
 329     private List<PreKeyRecord> generatePreKeys() {
 330         List<PreKeyRecord> records = new ArrayList<>(BaseConfig.PREKEY_BATCH_SIZE);
 331
 332         final int offset = account.getPreKeyIdOffset();
 333         for (int i = 0; i < BaseConfig.PREKEY_BATCH_SIZE; i++) {
 334             int preKeyId = (offset + i) % Medium.MAX_VALUE;
 335             ECKeyPair keyPair = Curve.generateKeyPair();
 336             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 337
 338             records.add(record);
 339         }
 340
 341         account.addPreKeys(records);
 342         account.save();
 343
 344         return records;
 345     }
 346
 347     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 348         try {
 349             ECKeyPair keyPair = Curve.generateKeyPair();
 350             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 351             SignedPreKeyRecord record = new SignedPreKeyRecord(account.getNextSignedPreKeyId(), System.currentTimeMillis(), keyPair, signature);
 352
 353             account.addSignedPreKey(record);
 354             account.save();
 355
 356             return record;
 357         } catch (InvalidKeyException e) {
 358             throw new AssertionError(e);
 359         }
 360     }
 361
 362     public void verifyAccount(String verificationCode, String pin) throws IOException {
 363         verificationCode = verificationCode.replace("-", "");
 364         account.setSignalingKey(KeyUtils.createSignalingKey());
 365         accountManager.verifyAccountWithCode(verificationCode, account.getSignalingKey(), account.getSignalProtocolStore().getLocalRegistrationId(), true, pin, getSelfUnidentifiedAccessKey(), false);
 366
 367         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 368         account.setRegistered(true);
 369         account.setRegistrationLockPin(pin);
 370
 371         refreshPreKeys();
 372         account.save();
 373     }
 374
 375     public void setRegistrationLockPin(Optional<String> pin) throws IOException {
 376         accountManager.setPin(pin);
 377         if (pin.isPresent()) {
 378             account.setRegistrationLockPin(pin.get());
 379         } else {
 380             account.setRegistrationLockPin(null);
 381         }
 382     }
 383
 384     private void refreshPreKeys() throws IOException {
 385         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 386         final IdentityKeyPair identityKeyPair = account.getSignalProtocolStore().getIdentityKeyPair();
 387         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(identityKeyPair);
 388
 389         accountManager.setPreKeys(getIdentity(), signedPreKeyRecord, oneTimePreKeys);
 390     }
 391
 392     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 393         File file = getGroupAvatarFile(groupId);
 394         if (!file.exists()) {
 395             return Optional.absent();
 396         }
 397
 398         return Optional.of(createAttachment(file));
 399     }
 400
 401     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 402         File file = getContactAvatarFile(number);
 403         if (!file.exists()) {
 404             return Optional.absent();
 405         }
 406
 407         return Optional.of(createAttachment(file));
 408     }
 409
 410     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 411         GroupInfo g = account.getGroupStore().getGroup(groupId);
 412         if (g == null) {
 413             throw new GroupNotFoundException(groupId);
 414         }
 415         for (String member : g.members) {
 416             if (member.equals(this.username)) {
 417                 return g;
 418             }
 419         }
 420         throw new NotAGroupMemberException(groupId, g.name);
 421     }
 422
 423     public List<GroupInfo> getGroups() {
 424         return account.getGroupStore().getGroups();
 425     }
 426
 427     @Override
 428     public void sendGroupMessage(String messageText, List<String> attachments,
 429                                  byte[] groupId)
 430             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 431         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 432         if (attachments != null) {
 433             messageBuilder.withAttachments(getSignalServiceAttachments(attachments));
 434         }
 435         if (groupId != null) {
 436             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 437                     .withId(groupId)
 438                     .build();
 439             messageBuilder.asGroupMessage(group);
 440         }
 441         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 442         if (thread != null) {
 443             messageBuilder.withExpiration(thread.messageExpirationTime);
 444         }
 445
 446         final GroupInfo g = getGroupForSending(groupId);
 447
 448         // Don't send group message to ourself
 449         final List<String> membersSend = new ArrayList<>(g.members);
 450         membersSend.remove(this.username);
 451         sendMessageLegacy(messageBuilder, membersSend);
 452     }
 453
 454     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 455         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 456                 .withId(groupId)
 457                 .build();
 458
 459         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 460                 .asGroupMessage(group);
 461
 462         final GroupInfo g = getGroupForSending(groupId);
 463         g.members.remove(this.username);
 464         account.getGroupStore().updateGroup(g);
 465
 466         sendMessageLegacy(messageBuilder, g.members);
 467     }
 468
 469     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 470         GroupInfo g;
 471         if (groupId == null) {
 472             // Create new group
 473             g = new GroupInfo(KeyUtils.createGroupId());
 474             g.members.add(username);
 475         } else {
 476             g = getGroupForSending(groupId);
 477         }
 478
 479         if (name != null) {
 480             g.name = name;
 481         }
 482
 483         if (members != null) {
 484             Set<String> newMembers = new HashSet<>();
 485             for (String member : members) {
 486                 try {
 487                     member = canonicalizeNumber(member);
 488                 } catch (InvalidNumberException e) {
 489                     System.err.println("Failed to add member \"" + member + "\" to group: " + e.getMessage());
 490                     System.err.println("Aborting…");
 491                     System.exit(1);
 492                 }
 493                 if (g.members.contains(member)) {
 494                     continue;
 495                 }
 496                 newMembers.add(member);
 497                 g.members.add(member);
 498             }
 499             final List<ContactTokenDetails> contacts = accountManager.getContacts(newMembers);
 500             if (contacts.size() != newMembers.size()) {
 501                 // Some of the new members are not registered on Signal
 502                 for (ContactTokenDetails contact : contacts) {
 503                     newMembers.remove(contact.getNumber());
 504                 }
 505                 System.err.println("Failed to add members " + Util.join(", ", newMembers) + " to group: Not registered on Signal");
 506                 System.err.println("Aborting…");
 507                 System.exit(1);
 508             }
 509         }
 510
 511         if (avatarFile != null) {
 512             IOUtils.createPrivateDirectories(avatarsPath);
 513             File aFile = getGroupAvatarFile(g.groupId);
 514             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 515         }
 516
 517         account.getGroupStore().updateGroup(g);
 518
 519         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 520
 521         // Don't send group message to ourself
 522         final List<String> membersSend = new ArrayList<>(g.members);
 523         membersSend.remove(this.username);
 524         sendMessageLegacy(messageBuilder, membersSend);
 525         return g.groupId;
 526     }
 527
 528     private void sendUpdateGroupMessage(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 529         if (groupId == null) {
 530             return;
 531         }
 532         GroupInfo g = getGroupForSending(groupId);
 533
 534         if (!g.members.contains(recipient)) {
 535             return;
 536         }
 537
 538         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 539
 540         // Send group message only to the recipient who requested it
 541         final List<String> membersSend = new ArrayList<>();
 542         membersSend.add(recipient);
 543         sendMessageLegacy(messageBuilder, membersSend);
 544     }
 545
 546     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 547         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 548                 .withId(g.groupId)
 549                 .withName(g.name)
 550                 .withMembers(new ArrayList<>(g.members));
 551
 552         File aFile = getGroupAvatarFile(g.groupId);
 553         if (aFile.exists()) {
 554             try {
 555                 group.withAvatar(createAttachment(aFile));
 556             } catch (IOException e) {
 557                 throw new AttachmentInvalidException(aFile.toString(), e);
 558             }
 559         }
 560
 561         return SignalServiceDataMessage.newBuilder()
 562                 .asGroupMessage(group.build());
 563     }
 564
 565     private void sendGroupInfoRequest(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 566         if (groupId == null) {
 567             return;
 568         }
 569
 570         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 571                 .withId(groupId);
 572
 573         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 574                 .asGroupMessage(group.build());
 575
 576         // Send group info request message to the recipient who sent us a message with this groupId
 577         final List<String> membersSend = new ArrayList<>();
 578         membersSend.add(recipient);
 579         sendMessageLegacy(messageBuilder, membersSend);
 580     }
 581
 582     @Override
 583     public void sendMessage(String message, List<String> attachments, String recipient)
 584             throws EncapsulatedExceptions, AttachmentInvalidException, IOException {
 585         List<String> recipients = new ArrayList<>(1);
 586         recipients.add(recipient);
 587         sendMessage(message, attachments, recipients);
 588     }
 589
 590     @Override
 591     public void sendMessage(String messageText, List<String> attachments,
 592                             List<String> recipients)
 593             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 594         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 595         if (attachments != null) {
 596             messageBuilder.withAttachments(getSignalServiceAttachments(attachments));
 597         }
 598         sendMessageLegacy(messageBuilder, recipients);
 599     }
 600
 601     @Override
 602     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions {
 603         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 604                 .asEndSessionMessage();
 605
 606         sendMessageLegacy(messageBuilder, recipients);
 607     }
 608
 609     @Override
 610     public String getContactName(String number) {
 611         ContactInfo contact = account.getContactStore().getContact(number);
 612         if (contact == null) {
 613             return "";
 614         } else {
 615             return contact.name;
 616         }
 617     }
 618
 619     @Override
 620     public void setContactName(String number, String name) {
 621         ContactInfo contact = account.getContactStore().getContact(number);
 622         if (contact == null) {
 623             contact = new ContactInfo();
 624             contact.number = number;
 625             System.err.println("Add contact " + number + " named " + name);
 626         } else {
 627             System.err.println("Updating contact " + number + " name " + contact.name + " -> " + name);
 628         }
 629         contact.name = name;
 630         account.getContactStore().updateContact(contact);
 631         account.save();
 632     }
 633
 634     @Override
 635     public List<byte[]> getGroupIds() {
 636         List<GroupInfo> groups = getGroups();
 637         List<byte[]> ids = new ArrayList<>(groups.size());
 638         for (GroupInfo group : groups) {
 639             ids.add(group.groupId);
 640         }
 641         return ids;
 642     }
 643
 644     @Override
 645     public String getGroupName(byte[] groupId) {
 646         GroupInfo group = getGroup(groupId);
 647         if (group == null) {
 648             return "";
 649         } else {
 650             return group.name;
 651         }
 652     }
 653
 654     @Override
 655     public List<String> getGroupMembers(byte[] groupId) {
 656         GroupInfo group = getGroup(groupId);
 657         if (group == null) {
 658             return new ArrayList<>();
 659         } else {
 660             return new ArrayList<>(group.members);
 661         }
 662     }
 663
 664     @Override
 665     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 666         if (groupId.length == 0) {
 667             groupId = null;
 668         }
 669         if (name.isEmpty()) {
 670             name = null;
 671         }
 672         if (members.size() == 0) {
 673             members = null;
 674         }
 675         if (avatar.isEmpty()) {
 676             avatar = null;
 677         }
 678         return sendUpdateGroupMessage(groupId, name, members, avatar);
 679     }
 680
 681     /**
 682      * Change the expiration timer for a thread (number of groupId)
 683      *
 684      * @param numberOrGroupId
 685      * @param messageExpirationTimer
 686      */
 687     public void setExpirationTimer(String numberOrGroupId, int messageExpirationTimer) {
 688         ThreadInfo thread = account.getThreadStore().getThread(numberOrGroupId);
 689         thread.messageExpirationTime = messageExpirationTimer;
 690         account.getThreadStore().updateThread(thread);
 691     }
 692
 693     private void requestSyncGroups() throws IOException {
 694         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 695         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 696         try {
 697             sendSyncMessage(message);
 698         } catch (UntrustedIdentityException e) {
 699             e.printStackTrace();
 700         }
 701     }
 702
 703     private void requestSyncContacts() throws IOException {
 704         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 705         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 706         try {
 707             sendSyncMessage(message);
 708         } catch (UntrustedIdentityException e) {
 709             e.printStackTrace();
 710         }
 711     }
 712
 713     private void requestSyncBlocked() throws IOException {
 714         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 715         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 716         try {
 717             sendSyncMessage(message);
 718         } catch (UntrustedIdentityException e) {
 719             e.printStackTrace();
 720         }
 721     }
 722
 723     private void requestSyncConfiguration() throws IOException {
 724         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 725         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 726         try {
 727             sendSyncMessage(message);
 728         } catch (UntrustedIdentityException e) {
 729             e.printStackTrace();
 730         }
 731     }
 732
 733     private byte[] getSelfUnidentifiedAccessKey() {
 734         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 735     }
 736
 737     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 738         // TODO implement
 739         return null;
 740     }
 741
 742     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 743         // TODO implement
 744         return Optional.absent();
 745     }
 746
 747     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
 748         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
 749         for (SignalServiceAddress recipient : recipients) {
 750             result.add(Optional.<UnidentifiedAccessPair>absent());
 751         }
 752         return result;
 753     }
 754
 755     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
 756         // TODO implement
 757         return Optional.absent();
 758     }
 759
 760     private void sendSyncMessage(SignalServiceSyncMessage message)
 761             throws IOException, UntrustedIdentityException {
 762         SignalServiceMessageSender messageSender = new SignalServiceMessageSender(BaseConfig.serviceConfiguration, username, account.getPassword(),
 763                 account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 764         try {
 765             messageSender.sendMessage(message, getAccessForSync());
 766         } catch (UntrustedIdentityException e) {
 767             account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 768             throw e;
 769         }
 770     }
 771
 772     /**
 773      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
 774      */
 775     private void sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 776             throws EncapsulatedExceptions, IOException {
 777         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
 778
 779         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
 780         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
 781         List<NetworkFailureException> networkExceptions = new LinkedList<>();
 782
 783         for (SendMessageResult result : results) {
 784             if (result.isUnregisteredFailure()) {
 785                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getNumber(), null));
 786             } else if (result.isNetworkFailure()) {
 787                 networkExceptions.add(new NetworkFailureException(result.getAddress().getNumber(), null));
 788             } else if (result.getIdentityFailure() != null) {
 789                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getNumber(), result.getIdentityFailure().getIdentityKey()));
 790             }
 791         }
 792         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
 793             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
 794         }
 795     }
 796
 797     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 798             throws IOException {
 799         Set<SignalServiceAddress> recipientsTS = getSignalServiceAddresses(recipients);
 800         if (recipientsTS == null) return Collections.emptyList();
 801
 802         SignalServiceDataMessage message = null;
 803         try {
 804             SignalServiceMessageSender messageSender = new SignalServiceMessageSender(BaseConfig.serviceConfiguration, username, account.getPassword(),
 805                     account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 806
 807             message = messageBuilder.build();
 808             if (message.getGroupInfo().isPresent()) {
 809                 try {
 810                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipientsTS), getAccessFor(recipientsTS), message);
 811                     for (SendMessageResult r : result) {
 812                         if (r.getIdentityFailure() != null) {
 813                             account.getSignalProtocolStore().saveIdentity(r.getAddress().getNumber(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
 814                         }
 815                     }
 816                     return result;
 817                 } catch (UntrustedIdentityException e) {
 818                     account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 819                     return Collections.emptyList();
 820                 }
 821             } else {
 822                 // Send to all individually, so sync messages are sent correctly
 823                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 824                 for (SignalServiceAddress address : recipientsTS) {
 825                     ThreadInfo thread = account.getThreadStore().getThread(address.getNumber());
 826                     if (thread != null) {
 827                         messageBuilder.withExpiration(thread.messageExpirationTime);
 828                     } else {
 829                         messageBuilder.withExpiration(0);
 830                     }
 831                     message = messageBuilder.build();
 832                     try {
 833                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
 834                         results.add(result);
 835                     } catch (UntrustedIdentityException e) {
 836                         account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 837                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
 838                     }
 839                 }
 840                 return results;
 841             }
 842         } finally {
 843             if (message != null && message.isEndSession()) {
 844                 for (SignalServiceAddress recipient : recipientsTS) {
 845                     handleEndSession(recipient.getNumber());
 846                 }
 847             }
 848             account.save();
 849         }
 850     }
 851
 852     private Set<SignalServiceAddress> getSignalServiceAddresses(Collection<String> recipients) {
 853         Set<SignalServiceAddress> recipientsTS = new HashSet<>(recipients.size());
 854         for (String recipient : recipients) {
 855             try {
 856                 recipientsTS.add(getPushAddress(recipient));
 857             } catch (InvalidNumberException e) {
 858                 System.err.println("Failed to add recipient \"" + recipient + "\": " + e.getMessage());
 859                 System.err.println("Aborting sending.");
 860                 account.save();
 861                 return null;
 862             }
 863         }
 864         return recipientsTS;
 865     }
 866
 867     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, ProtocolUntrustedIdentityException, SelfSendException {
 868         SignalServiceCipher cipher = new SignalServiceCipher(new SignalServiceAddress(username), account.getSignalProtocolStore(), getCertificateValidator());
 869         try {
 870             return cipher.decrypt(envelope);
 871         } catch (ProtocolUntrustedIdentityException e) {
 872             // TODO We don't get the new untrusted identity from ProtocolUntrustedIdentityException anymore ... we need to get it from somewhere else
 873 //            account.getSignalProtocolStore().saveIdentity(e.getSender(), e.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
 874             throw e;
 875         }
 876     }
 877
 878     private void handleEndSession(String source) {
 879         account.getSignalProtocolStore().deleteAllSessions(source);
 880     }
 881
 882     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, String source, String destination, boolean ignoreAttachments) {
 883         String threadId;
 884         if (message.getGroupInfo().isPresent()) {
 885             SignalServiceGroup groupInfo = message.getGroupInfo().get();
 886             threadId = Base64.encodeBytes(groupInfo.getGroupId());
 887             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
 888             switch (groupInfo.getType()) {
 889                 case UPDATE:
 890                     if (group == null) {
 891                         group = new GroupInfo(groupInfo.getGroupId());
 892                     }
 893
 894                     if (groupInfo.getAvatar().isPresent()) {
 895                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
 896                         if (avatar.isPointer()) {
 897                             try {
 898                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
 899                             } catch (IOException | InvalidMessageException e) {
 900                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
 901                             }
 902                         }
 903                     }
 904
 905                     if (groupInfo.getName().isPresent()) {
 906                         group.name = groupInfo.getName().get();
 907                     }
 908
 909                     if (groupInfo.getMembers().isPresent()) {
 910                         group.members.addAll(groupInfo.getMembers().get());
 911                     }
 912
 913                     account.getGroupStore().updateGroup(group);
 914                     break;
 915                 case DELIVER:
 916                     if (group == null) {
 917                         try {
 918                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 919                         } catch (IOException | EncapsulatedExceptions e) {
 920                             e.printStackTrace();
 921                         }
 922                     }
 923                     break;
 924                 case QUIT:
 925                     if (group == null) {
 926                         try {
 927                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 928                         } catch (IOException | EncapsulatedExceptions e) {
 929                             e.printStackTrace();
 930                         }
 931                     } else {
 932                         group.members.remove(source);
 933                         account.getGroupStore().updateGroup(group);
 934                     }
 935                     break;
 936                 case REQUEST_INFO:
 937                     if (group != null) {
 938                         try {
 939                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
 940                         } catch (IOException | EncapsulatedExceptions e) {
 941                             e.printStackTrace();
 942                         } catch (NotAGroupMemberException e) {
 943                             // We have left this group, so don't send a group update message
 944                         }
 945                     }
 946                     break;
 947             }
 948         } else {
 949             if (isSync) {
 950                 threadId = destination;
 951             } else {
 952                 threadId = source;
 953             }
 954         }
 955         if (message.isEndSession()) {
 956             handleEndSession(isSync ? destination : source);
 957         }
 958         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
 959             ThreadInfo thread = account.getThreadStore().getThread(threadId);
 960             if (thread == null) {
 961                 thread = new ThreadInfo();
 962                 thread.id = threadId;
 963             }
 964             if (thread.messageExpirationTime != message.getExpiresInSeconds()) {
 965                 thread.messageExpirationTime = message.getExpiresInSeconds();
 966                 account.getThreadStore().updateThread(thread);
 967             }
 968         }
 969         if (message.getAttachments().isPresent() && !ignoreAttachments) {
 970             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
 971                 if (attachment.isPointer()) {
 972                     try {
 973                         retrieveAttachment(attachment.asPointer());
 974                     } catch (IOException | InvalidMessageException e) {
 975                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
 976                     }
 977                 }
 978             }
 979         }
 980         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
 981             ContactInfo contact = account.getContactStore().getContact(source);
 982             if (contact == null) {
 983                 contact = new ContactInfo();
 984                 contact.number = source;
 985             }
 986             contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
 987         }
 988     }
 989
 990     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
 991         final File cachePath = new File(getMessageCachePath());
 992         if (!cachePath.exists()) {
 993             return;
 994         }
 995         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
 996             if (!dir.isDirectory()) {
 997                 continue;
 998             }
 999
1000             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1001                 if (!fileEntry.isFile()) {
1002                     continue;
1003                 }
1004                 SignalServiceEnvelope envelope;
1005                 try {
1006                     envelope = loadEnvelope(fileEntry);
1007                     if (envelope == null) {
1008                         continue;
1009                     }
1010                 } catch (IOException e) {
1011                     e.printStackTrace();
1012                     continue;
1013                 }
1014                 SignalServiceContent content = null;
1015                 if (!envelope.isReceipt()) {
1016                     try {
1017                         content = decryptMessage(envelope);
1018                     } catch (Exception e) {
1019                         continue;
1020                     }
1021                     handleMessage(envelope, content, ignoreAttachments);
1022                 }
1023                 account.save();
1024                 handler.handleMessage(envelope, content, null);
1025                 try {
1026                     Files.delete(fileEntry.toPath());
1027                 } catch (IOException e) {
1028                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1029                 }
1030             }
1031             // Try to delete directory if empty
1032             dir.delete();
1033         }
1034     }
1035
1036     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1037         retryFailedReceivedMessages(handler, ignoreAttachments);
1038         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
1039
1040         try {
1041             if (messagePipe == null) {
1042                 messagePipe = messageReceiver.createMessagePipe();
1043             }
1044
1045             while (true) {
1046                 SignalServiceEnvelope envelope;
1047                 SignalServiceContent content = null;
1048                 Exception exception = null;
1049                 final long now = new Date().getTime();
1050                 try {
1051                     envelope = messagePipe.read(timeout, unit, new SignalServiceMessagePipe.MessagePipeCallback() {
1052                         @Override
1053                         public void onMessage(SignalServiceEnvelope envelope) {
1054                             // store message on disk, before acknowledging receipt to the server
1055                             try {
1056                                 File cacheFile = getMessageCacheFile(envelope.getSource(), now, envelope.getTimestamp());
1057                                 storeEnvelope(envelope, cacheFile);
1058                             } catch (IOException e) {
1059                                 System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1060                             }
1061                         }
1062                     });
1063                 } catch (TimeoutException e) {
1064                     if (returnOnTimeout)
1065                         return;
1066                     continue;
1067                 } catch (InvalidVersionException e) {
1068                     System.err.println("Ignoring error: " + e.getMessage());
1069                     continue;
1070                 }
1071                 if (!envelope.isReceipt()) {
1072                     try {
1073                         content = decryptMessage(envelope);
1074                     } catch (Exception e) {
1075                         exception = e;
1076                     }
1077                     handleMessage(envelope, content, ignoreAttachments);
1078                 }
1079                 account.save();
1080                 handler.handleMessage(envelope, content, exception);
1081                 if (!(exception instanceof ProtocolUntrustedIdentityException)) {
1082                     File cacheFile = null;
1083                     try {
1084                         cacheFile = getMessageCacheFile(envelope.getSource(), now, envelope.getTimestamp());
1085                         Files.delete(cacheFile.toPath());
1086                         // Try to delete directory if empty
1087                         new File(getMessageCachePath()).delete();
1088                     } catch (IOException e) {
1089                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1090                     }
1091                 }
1092             }
1093         } finally {
1094             if (messagePipe != null) {
1095                 messagePipe.shutdown();
1096                 messagePipe = null;
1097             }
1098         }
1099     }
1100
1101     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1102         if (content != null) {
1103             if (content.getDataMessage().isPresent()) {
1104                 SignalServiceDataMessage message = content.getDataMessage().get();
1105                 handleSignalServiceDataMessage(message, false, envelope.getSource(), username, ignoreAttachments);
1106             }
1107             if (content.getSyncMessage().isPresent()) {
1108                 account.setMultiDevice(true);
1109                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1110                 if (syncMessage.getSent().isPresent()) {
1111                     SignalServiceDataMessage message = syncMessage.getSent().get().getMessage();
1112                     handleSignalServiceDataMessage(message, true, envelope.getSource(), syncMessage.getSent().get().getDestination().get(), ignoreAttachments);
1113                 }
1114                 if (syncMessage.getRequest().isPresent()) {
1115                     RequestMessage rm = syncMessage.getRequest().get();
1116                     if (rm.isContactsRequest()) {
1117                         try {
1118                             sendContacts();
1119                         } catch (UntrustedIdentityException | IOException e) {
1120                             e.printStackTrace();
1121                         }
1122                     }
1123                     if (rm.isGroupsRequest()) {
1124                         try {
1125                             sendGroups();
1126                         } catch (UntrustedIdentityException | IOException e) {
1127                             e.printStackTrace();
1128                         }
1129                     }
1130                     // TODO Handle rm.isBlockedListRequest(); rm.isConfigurationRequest();
1131                 }
1132                 if (syncMessage.getGroups().isPresent()) {
1133                     File tmpFile = null;
1134                     try {
1135                         tmpFile = IOUtils.createTempFile();
1136                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1137                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1138                             DeviceGroup g;
1139                             while ((g = s.read()) != null) {
1140                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1141                                 if (syncGroup == null) {
1142                                     syncGroup = new GroupInfo(g.getId());
1143                                 }
1144                                 if (g.getName().isPresent()) {
1145                                     syncGroup.name = g.getName().get();
1146                                 }
1147                                 syncGroup.members.addAll(g.getMembers());
1148                                 syncGroup.active = g.isActive();
1149                                 if (g.getColor().isPresent()) {
1150                                     syncGroup.color = g.getColor().get();
1151                                 }
1152
1153                                 if (g.getAvatar().isPresent()) {
1154                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1155                                 }
1156                                 account.getGroupStore().updateGroup(syncGroup);
1157                             }
1158                         }
1159                     } catch (Exception e) {
1160                         e.printStackTrace();
1161                     } finally {
1162                         if (tmpFile != null) {
1163                             try {
1164                                 Files.delete(tmpFile.toPath());
1165                             } catch (IOException e) {
1166                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1167                             }
1168                         }
1169                     }
1170                 }
1171                 if (syncMessage.getBlockedList().isPresent()) {
1172                     // TODO store list of blocked numbers
1173                 }
1174                 if (syncMessage.getContacts().isPresent()) {
1175                     File tmpFile = null;
1176                     try {
1177                         tmpFile = IOUtils.createTempFile();
1178                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1179                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1180                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1181                             if (contactsMessage.isComplete()) {
1182                                 account.getContactStore().clear();
1183                             }
1184                             DeviceContact c;
1185                             while ((c = s.read()) != null) {
1186                                 if (c.getNumber().equals(account.getUsername()) && c.getProfileKey().isPresent()) {
1187                                     account.setProfileKey(c.getProfileKey().get());
1188                                 }
1189                                 ContactInfo contact = account.getContactStore().getContact(c.getNumber());
1190                                 if (contact == null) {
1191                                     contact = new ContactInfo();
1192                                     contact.number = c.getNumber();
1193                                 }
1194                                 if (c.getName().isPresent()) {
1195                                     contact.name = c.getName().get();
1196                                 }
1197                                 if (c.getColor().isPresent()) {
1198                                     contact.color = c.getColor().get();
1199                                 }
1200                                 if (c.getProfileKey().isPresent()) {
1201                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get());
1202                                 }
1203                                 if (c.getVerified().isPresent()) {
1204                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1205                                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1206                                 }
1207                                 if (c.getExpirationTimer().isPresent()) {
1208                                     ThreadInfo thread = account.getThreadStore().getThread(c.getNumber());
1209                                     thread.messageExpirationTime = c.getExpirationTimer().get();
1210                                     account.getThreadStore().updateThread(thread);
1211                                 }
1212                                 if (c.isBlocked()) {
1213                                     // TODO store list of blocked numbers
1214                                 }
1215                                 account.getContactStore().updateContact(contact);
1216
1217                                 if (c.getAvatar().isPresent()) {
1218                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1219                                 }
1220                             }
1221                         }
1222                     } catch (Exception e) {
1223                         e.printStackTrace();
1224                     } finally {
1225                         if (tmpFile != null) {
1226                             try {
1227                                 Files.delete(tmpFile.toPath());
1228                             } catch (IOException e) {
1229                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1230                             }
1231                         }
1232                     }
1233                 }
1234                 if (syncMessage.getVerified().isPresent()) {
1235                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1236                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1237                 }
1238                 if (syncMessage.getConfiguration().isPresent()) {
1239                     // TODO
1240                 }
1241             }
1242         }
1243     }
1244
1245     private SignalServiceEnvelope loadEnvelope(File file) throws IOException {
1246         try (FileInputStream f = new FileInputStream(file)) {
1247             DataInputStream in = new DataInputStream(f);
1248             int version = in.readInt();
1249             if (version > 2) {
1250                 return null;
1251             }
1252             int type = in.readInt();
1253             String source = in.readUTF();
1254             int sourceDevice = in.readInt();
1255             if (version == 1) {
1256                 // read legacy relay field
1257                 in.readUTF();
1258             }
1259             long timestamp = in.readLong();
1260             byte[] content = null;
1261             int contentLen = in.readInt();
1262             if (contentLen > 0) {
1263                 content = new byte[contentLen];
1264                 in.readFully(content);
1265             }
1266             byte[] legacyMessage = null;
1267             int legacyMessageLen = in.readInt();
1268             if (legacyMessageLen > 0) {
1269                 legacyMessage = new byte[legacyMessageLen];
1270                 in.readFully(legacyMessage);
1271             }
1272             long serverTimestamp = 0;
1273             String uuid = null;
1274             if (version == 2) {
1275                 serverTimestamp = in.readLong();
1276                 uuid = in.readUTF();
1277                 if ("".equals(uuid)) {
1278                     uuid = null;
1279                 }
1280             }
1281             return new SignalServiceEnvelope(type, source, sourceDevice, timestamp, legacyMessage, content, serverTimestamp, uuid);
1282         }
1283     }
1284
1285     private void storeEnvelope(SignalServiceEnvelope envelope, File file) throws IOException {
1286         try (FileOutputStream f = new FileOutputStream(file)) {
1287             try (DataOutputStream out = new DataOutputStream(f)) {
1288                 out.writeInt(2); // version
1289                 out.writeInt(envelope.getType());
1290                 out.writeUTF(envelope.getSource());
1291                 out.writeInt(envelope.getSourceDevice());
1292                 out.writeLong(envelope.getTimestamp());
1293                 if (envelope.hasContent()) {
1294                     out.writeInt(envelope.getContent().length);
1295                     out.write(envelope.getContent());
1296                 } else {
1297                     out.writeInt(0);
1298                 }
1299                 if (envelope.hasLegacyMessage()) {
1300                     out.writeInt(envelope.getLegacyMessage().length);
1301                     out.write(envelope.getLegacyMessage());
1302                 } else {
1303                     out.writeInt(0);
1304                 }
1305                 out.writeLong(envelope.getServerTimestamp());
1306                 String uuid = envelope.getUuid();
1307                 out.writeUTF(uuid == null ? "" : uuid);
1308             }
1309         }
1310     }
1311
1312     private File getContactAvatarFile(String number) {
1313         return new File(avatarsPath, "contact-" + number);
1314     }
1315
1316     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1317         IOUtils.createPrivateDirectories(avatarsPath);
1318         if (attachment.isPointer()) {
1319             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1320             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1321         } else {
1322             SignalServiceAttachmentStream stream = attachment.asStream();
1323             return retrieveAttachment(stream, getContactAvatarFile(number));
1324         }
1325     }
1326
1327     private File getGroupAvatarFile(byte[] groupId) {
1328         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1329     }
1330
1331     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1332         IOUtils.createPrivateDirectories(avatarsPath);
1333         if (attachment.isPointer()) {
1334             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1335             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1336         } else {
1337             SignalServiceAttachmentStream stream = attachment.asStream();
1338             return retrieveAttachment(stream, getGroupAvatarFile(groupId));
1339         }
1340     }
1341
1342     public File getAttachmentFile(long attachmentId) {
1343         return new File(attachmentsPath, attachmentId + "");
1344     }
1345
1346     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1347         IOUtils.createPrivateDirectories(attachmentsPath);
1348         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1349     }
1350
1351     private File retrieveAttachment(SignalServiceAttachmentStream stream, File outputFile) throws IOException {
1352         InputStream input = stream.getInputStream();
1353
1354         try (OutputStream output = new FileOutputStream(outputFile)) {
1355             byte[] buffer = new byte[4096];
1356             int read;
1357
1358             while ((read = input.read(buffer)) != -1) {
1359                 output.write(buffer, 0, read);
1360             }
1361         } catch (FileNotFoundException e) {
1362             e.printStackTrace();
1363             return null;
1364         }
1365         return outputFile;
1366     }
1367
1368     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1369         if (storePreview && pointer.getPreview().isPresent()) {
1370             File previewFile = new File(outputFile + ".preview");
1371             try (OutputStream output = new FileOutputStream(previewFile)) {
1372                 byte[] preview = pointer.getPreview().get();
1373                 output.write(preview, 0, preview.length);
1374             } catch (FileNotFoundException e) {
1375                 e.printStackTrace();
1376                 return null;
1377             }
1378         }
1379
1380         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
1381
1382         File tmpFile = IOUtils.createTempFile();
1383         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1384             try (OutputStream output = new FileOutputStream(outputFile)) {
1385                 byte[] buffer = new byte[4096];
1386                 int read;
1387
1388                 while ((read = input.read(buffer)) != -1) {
1389                     output.write(buffer, 0, read);
1390                 }
1391             } catch (FileNotFoundException e) {
1392                 e.printStackTrace();
1393                 return null;
1394             }
1395         } finally {
1396             try {
1397                 Files.delete(tmpFile.toPath());
1398             } catch (IOException e) {
1399                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1400             }
1401         }
1402         return outputFile;
1403     }
1404
1405     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1406         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
1407         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1408     }
1409
1410     private String canonicalizeNumber(String number) throws InvalidNumberException {
1411         String localNumber = username;
1412         return PhoneNumberFormatter.formatNumber(number, localNumber);
1413     }
1414
1415     private SignalServiceAddress getPushAddress(String number) throws InvalidNumberException {
1416         String e164number = canonicalizeNumber(number);
1417         return new SignalServiceAddress(e164number);
1418     }
1419
1420     @Override
1421     public boolean isRemote() {
1422         return false;
1423     }
1424
1425     private void sendGroups() throws IOException, UntrustedIdentityException {
1426         File groupsFile = IOUtils.createTempFile();
1427
1428         try {
1429             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1430                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1431                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1432                     ThreadInfo info = account.getThreadStore().getThread(Base64.encodeBytes(record.groupId));
1433                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1434                             new ArrayList<>(record.members), createGroupAvatarAttachment(record.groupId),
1435                             record.active, Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1436                             Optional.fromNullable(record.color), false));
1437                 }
1438             }
1439
1440             if (groupsFile.exists() && groupsFile.length() > 0) {
1441                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1442                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1443                             .withStream(groupsFileStream)
1444                             .withContentType("application/octet-stream")
1445                             .withLength(groupsFile.length())
1446                             .build();
1447
1448                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1449                 }
1450             }
1451         } finally {
1452             try {
1453                 Files.delete(groupsFile.toPath());
1454             } catch (IOException e) {
1455                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1456             }
1457         }
1458     }
1459
1460     private void sendContacts() throws IOException, UntrustedIdentityException {
1461         File contactsFile = IOUtils.createTempFile();
1462
1463         try {
1464             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1465                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1466                 for (ContactInfo record : account.getContactStore().getContacts()) {
1467                     VerifiedMessage verifiedMessage = null;
1468                     ThreadInfo info = account.getThreadStore().getThread(record.number);
1469                     if (getIdentities().containsKey(record.number)) {
1470                         JsonIdentityKeyStore.Identity currentIdentity = null;
1471                         for (JsonIdentityKeyStore.Identity id : getIdentities().get(record.number)) {
1472                             if (currentIdentity == null || id.getDateAdded().after(currentIdentity.getDateAdded())) {
1473                                 currentIdentity = id;
1474                             }
1475                         }
1476                         if (currentIdentity != null) {
1477                             verifiedMessage = new VerifiedMessage(record.number, currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1478                         }
1479                     }
1480
1481                     byte[] profileKey = record.profileKey == null ? null : Base64.decode(record.profileKey);
1482                     // TODO store list of blocked numbers
1483                     boolean blocked = false;
1484                     out.write(new DeviceContact(record.number, Optional.fromNullable(record.name),
1485                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1486                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), blocked, Optional.fromNullable(info != null ? info.messageExpirationTime : null)));
1487                 }
1488
1489                 if (account.getProfileKey() != null) {
1490                     // Send our own profile key as well
1491                     out.write(new DeviceContact(account.getUsername(),
1492                             Optional.<String>absent(), Optional.<SignalServiceAttachmentStream>absent(),
1493                             Optional.<String>absent(), Optional.<VerifiedMessage>absent(),
1494                             Optional.of(account.getProfileKey()),
1495                             false, Optional.<Integer>absent()));
1496                 }
1497             }
1498
1499             if (contactsFile.exists() && contactsFile.length() > 0) {
1500                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1501                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1502                             .withStream(contactsFileStream)
1503                             .withContentType("application/octet-stream")
1504                             .withLength(contactsFile.length())
1505                             .build();
1506
1507                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1508                 }
1509             }
1510         } finally {
1511             try {
1512                 Files.delete(contactsFile.toPath());
1513             } catch (IOException e) {
1514                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1515             }
1516         }
1517     }
1518
1519     private void sendVerifiedMessage(String destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1520         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1521         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1522     }
1523
1524     public ContactInfo getContact(String number) {
1525         return account.getContactStore().getContact(number);
1526     }
1527
1528     public GroupInfo getGroup(byte[] groupId) {
1529         return account.getGroupStore().getGroup(groupId);
1530     }
1531
1532     public Map<String, List<JsonIdentityKeyStore.Identity>> getIdentities() {
1533         return account.getSignalProtocolStore().getIdentities();
1534     }
1535
1536     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) {
1537         return account.getSignalProtocolStore().getIdentities(number);
1538     }
1539
1540     /**
1541      * Trust this the identity with this fingerprint
1542      *
1543      * @param name        username of the identity
1544      * @param fingerprint Fingerprint
1545      */
1546     public boolean trustIdentityVerified(String name, byte[] fingerprint) {
1547         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1548         if (ids == null) {
1549             return false;
1550         }
1551         for (JsonIdentityKeyStore.Identity id : ids) {
1552             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1553                 continue;
1554             }
1555
1556             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1557             try {
1558                 sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1559             } catch (IOException | UntrustedIdentityException e) {
1560                 e.printStackTrace();
1561             }
1562             account.save();
1563             return true;
1564         }
1565         return false;
1566     }
1567
1568     /**
1569      * Trust this the identity with this safety number
1570      *
1571      * @param name         username of the identity
1572      * @param safetyNumber Safety number
1573      */
1574     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) {
1575         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1576         if (ids == null) {
1577             return false;
1578         }
1579         for (JsonIdentityKeyStore.Identity id : ids) {
1580             if (!safetyNumber.equals(computeSafetyNumber(name, id.getIdentityKey()))) {
1581                 continue;
1582             }
1583
1584             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1585             try {
1586                 sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1587             } catch (IOException | UntrustedIdentityException e) {
1588                 e.printStackTrace();
1589             }
1590             account.save();
1591             return true;
1592         }
1593         return false;
1594     }
1595
1596     /**
1597      * Trust all keys of this identity without verification
1598      *
1599      * @param name username of the identity
1600      */
1601     public boolean trustIdentityAllKeys(String name) {
1602         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1603         if (ids == null) {
1604             return false;
1605         }
1606         for (JsonIdentityKeyStore.Identity id : ids) {
1607             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1608                 account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1609                 try {
1610                     sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1611                 } catch (IOException | UntrustedIdentityException e) {
1612                     e.printStackTrace();
1613                 }
1614             }
1615         }
1616         account.save();
1617         return true;
1618     }
1619
1620     public String computeSafetyNumber(String theirUsername, IdentityKey theirIdentityKey) {
1621         Fingerprint fingerprint = new NumericFingerprintGenerator(5200).createFor(username, getIdentity(), theirUsername, theirIdentityKey);
1622         return fingerprint.getDisplayableFingerprint().getDisplayText();
1623     }
1624
1625     public interface ReceiveMessageHandler {
1626
1627         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
1628     }
1629 }