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