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 SignalServiceMessageReceiver getMessageReceiver() {
 418         return new SignalServiceMessageReceiver(BaseConfig.serviceConfiguration, username, account.getPassword(), account.getDeviceId(), account.getSignalingKey(), BaseConfig.USER_AGENT, null, timer);
 419     }
 420
 421     private Optional<SignalServiceAttachmentStream> createGroupAvatarAttachment(byte[] groupId) throws IOException {
 422         File file = getGroupAvatarFile(groupId);
 423         if (!file.exists()) {
 424             return Optional.absent();
 425         }
 426
 427         return Optional.of(Utils.createAttachment(file));
 428     }
 429
 430     private Optional<SignalServiceAttachmentStream> createContactAvatarAttachment(String number) throws IOException {
 431         File file = getContactAvatarFile(number);
 432         if (!file.exists()) {
 433             return Optional.absent();
 434         }
 435
 436         return Optional.of(Utils.createAttachment(file));
 437     }
 438
 439     private GroupInfo getGroupForSending(byte[] groupId) throws GroupNotFoundException, NotAGroupMemberException {
 440         GroupInfo g = account.getGroupStore().getGroup(groupId);
 441         if (g == null) {
 442             throw new GroupNotFoundException(groupId);
 443         }
 444         for (String member : g.members) {
 445             if (member.equals(this.username)) {
 446                 return g;
 447             }
 448         }
 449         throw new NotAGroupMemberException(groupId, g.name);
 450     }
 451
 452     public List<GroupInfo> getGroups() {
 453         return account.getGroupStore().getGroups();
 454     }
 455
 456     @Override
 457     public void sendGroupMessage(String messageText, List<String> attachments,
 458                                  byte[] groupId)
 459             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 460         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 461         if (attachments != null) {
 462             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 463         }
 464         if (groupId != null) {
 465             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 466                     .withId(groupId)
 467                     .build();
 468             messageBuilder.asGroupMessage(group);
 469         }
 470         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 471         if (thread != null) {
 472             messageBuilder.withExpiration(thread.messageExpirationTime);
 473         }
 474
 475         final GroupInfo g = getGroupForSending(groupId);
 476
 477         // Don't send group message to ourself
 478         final List<String> membersSend = new ArrayList<>(g.members);
 479         membersSend.remove(this.username);
 480         sendMessageLegacy(messageBuilder, membersSend);
 481     }
 482
 483     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions {
 484         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 485                 .withId(groupId)
 486                 .build();
 487
 488         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 489                 .asGroupMessage(group);
 490
 491         final GroupInfo g = getGroupForSending(groupId);
 492         g.members.remove(this.username);
 493         account.getGroupStore().updateGroup(g);
 494
 495         sendMessageLegacy(messageBuilder, g.members);
 496     }
 497
 498     private byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 499         GroupInfo g;
 500         if (groupId == null) {
 501             // Create new group
 502             g = new GroupInfo(KeyUtils.createGroupId());
 503             g.members.add(username);
 504         } else {
 505             g = getGroupForSending(groupId);
 506         }
 507
 508         if (name != null) {
 509             g.name = name;
 510         }
 511
 512         if (members != null) {
 513             Set<String> newMembers = new HashSet<>();
 514             for (String member : members) {
 515                 try {
 516                     member = Utils.canonicalizeNumber(member, username);
 517                 } catch (InvalidNumberException e) {
 518                     System.err.println("Failed to add member \"" + member + "\" to group: " + e.getMessage());
 519                     System.err.println("Aborting…");
 520                     System.exit(1);
 521                 }
 522                 if (g.members.contains(member)) {
 523                     continue;
 524                 }
 525                 newMembers.add(member);
 526                 g.members.add(member);
 527             }
 528             final List<ContactTokenDetails> contacts = accountManager.getContacts(newMembers);
 529             if (contacts.size() != newMembers.size()) {
 530                 // Some of the new members are not registered on Signal
 531                 for (ContactTokenDetails contact : contacts) {
 532                     newMembers.remove(contact.getNumber());
 533                 }
 534                 System.err.println("Failed to add members " + Util.join(", ", newMembers) + " to group: Not registered on Signal");
 535                 System.err.println("Aborting…");
 536                 System.exit(1);
 537             }
 538         }
 539
 540         if (avatarFile != null) {
 541             IOUtils.createPrivateDirectories(avatarsPath);
 542             File aFile = getGroupAvatarFile(g.groupId);
 543             Files.copy(Paths.get(avatarFile), aFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
 544         }
 545
 546         account.getGroupStore().updateGroup(g);
 547
 548         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 549
 550         // Don't send group message to ourself
 551         final List<String> membersSend = new ArrayList<>(g.members);
 552         membersSend.remove(this.username);
 553         sendMessageLegacy(messageBuilder, membersSend);
 554         return g.groupId;
 555     }
 556
 557     private void sendUpdateGroupMessage(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 558         if (groupId == null) {
 559             return;
 560         }
 561         GroupInfo g = getGroupForSending(groupId);
 562
 563         if (!g.members.contains(recipient)) {
 564             return;
 565         }
 566
 567         SignalServiceDataMessage.Builder messageBuilder = getGroupUpdateMessageBuilder(g);
 568
 569         // Send group message only to the recipient who requested it
 570         final List<String> membersSend = new ArrayList<>();
 571         membersSend.add(recipient);
 572         sendMessageLegacy(messageBuilder, membersSend);
 573     }
 574
 575     private SignalServiceDataMessage.Builder getGroupUpdateMessageBuilder(GroupInfo g) {
 576         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 577                 .withId(g.groupId)
 578                 .withName(g.name)
 579                 .withMembers(new ArrayList<>(g.members));
 580
 581         File aFile = getGroupAvatarFile(g.groupId);
 582         if (aFile.exists()) {
 583             try {
 584                 group.withAvatar(Utils.createAttachment(aFile));
 585             } catch (IOException e) {
 586                 throw new AttachmentInvalidException(aFile.toString(), e);
 587             }
 588         }
 589
 590         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 591                 .asGroupMessage(group.build());
 592
 593         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(g.groupId));
 594         if (thread != null) {
 595             messageBuilder.withExpiration(thread.messageExpirationTime);
 596         }
 597
 598         return messageBuilder;
 599     }
 600
 601     private void sendGroupInfoRequest(byte[] groupId, String recipient) throws IOException, EncapsulatedExceptions {
 602         if (groupId == null) {
 603             return;
 604         }
 605
 606         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.REQUEST_INFO)
 607                 .withId(groupId);
 608
 609         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 610                 .asGroupMessage(group.build());
 611
 612         ThreadInfo thread = account.getThreadStore().getThread(Base64.encodeBytes(groupId));
 613         if (thread != null) {
 614             messageBuilder.withExpiration(thread.messageExpirationTime);
 615         }
 616
 617         // Send group info request message to the recipient who sent us a message with this groupId
 618         final List<String> membersSend = new ArrayList<>();
 619         membersSend.add(recipient);
 620         sendMessageLegacy(messageBuilder, membersSend);
 621     }
 622
 623     @Override
 624     public void sendMessage(String message, List<String> attachments, String recipient)
 625             throws EncapsulatedExceptions, AttachmentInvalidException, IOException {
 626         List<String> recipients = new ArrayList<>(1);
 627         recipients.add(recipient);
 628         sendMessage(message, attachments, recipients);
 629     }
 630
 631     @Override
 632     public void sendMessage(String messageText, List<String> attachments,
 633                             List<String> recipients)
 634             throws IOException, EncapsulatedExceptions, AttachmentInvalidException {
 635         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 636         if (attachments != null) {
 637             messageBuilder.withAttachments(Utils.getSignalServiceAttachments(attachments));
 638         }
 639         messageBuilder.withProfileKey(account.getProfileKey());
 640         sendMessageLegacy(messageBuilder, recipients);
 641     }
 642
 643     @Override
 644     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions {
 645         SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder()
 646                 .asEndSessionMessage();
 647
 648         sendMessageLegacy(messageBuilder, recipients);
 649     }
 650
 651     @Override
 652     public String getContactName(String number) {
 653         ContactInfo contact = account.getContactStore().getContact(number);
 654         if (contact == null) {
 655             return "";
 656         } else {
 657             return contact.name;
 658         }
 659     }
 660
 661     @Override
 662     public void setContactName(String number, String name) {
 663         ContactInfo contact = account.getContactStore().getContact(number);
 664         if (contact == null) {
 665             contact = new ContactInfo();
 666             contact.number = number;
 667             System.err.println("Add contact " + number + " named " + name);
 668         } else {
 669             System.err.println("Updating contact " + number + " name " + contact.name + " -> " + name);
 670         }
 671         contact.name = name;
 672         account.getContactStore().updateContact(contact);
 673         account.save();
 674     }
 675
 676     @Override
 677     public List<byte[]> getGroupIds() {
 678         List<GroupInfo> groups = getGroups();
 679         List<byte[]> ids = new ArrayList<>(groups.size());
 680         for (GroupInfo group : groups) {
 681             ids.add(group.groupId);
 682         }
 683         return ids;
 684     }
 685
 686     @Override
 687     public String getGroupName(byte[] groupId) {
 688         GroupInfo group = getGroup(groupId);
 689         if (group == null) {
 690             return "";
 691         } else {
 692             return group.name;
 693         }
 694     }
 695
 696     @Override
 697     public List<String> getGroupMembers(byte[] groupId) {
 698         GroupInfo group = getGroup(groupId);
 699         if (group == null) {
 700             return new ArrayList<>();
 701         } else {
 702             return new ArrayList<>(group.members);
 703         }
 704     }
 705
 706     @Override
 707     public byte[] updateGroup(byte[] groupId, String name, List<String> members, String avatar) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException {
 708         if (groupId.length == 0) {
 709             groupId = null;
 710         }
 711         if (name.isEmpty()) {
 712             name = null;
 713         }
 714         if (members.size() == 0) {
 715             members = null;
 716         }
 717         if (avatar.isEmpty()) {
 718             avatar = null;
 719         }
 720         return sendUpdateGroupMessage(groupId, name, members, avatar);
 721     }
 722
 723     /**
 724      * Change the expiration timer for a thread (number of groupId)
 725      *
 726      * @param numberOrGroupId
 727      * @param messageExpirationTimer
 728      */
 729     public void setExpirationTimer(String numberOrGroupId, int messageExpirationTimer) {
 730         ThreadInfo thread = account.getThreadStore().getThread(numberOrGroupId);
 731         thread.messageExpirationTime = messageExpirationTimer;
 732         account.getThreadStore().updateThread(thread);
 733     }
 734
 735     private void requestSyncGroups() throws IOException {
 736         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 737         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 738         try {
 739             sendSyncMessage(message);
 740         } catch (UntrustedIdentityException e) {
 741             e.printStackTrace();
 742         }
 743     }
 744
 745     private void requestSyncContacts() throws IOException {
 746         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 747         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 748         try {
 749             sendSyncMessage(message);
 750         } catch (UntrustedIdentityException e) {
 751             e.printStackTrace();
 752         }
 753     }
 754
 755     private void requestSyncBlocked() throws IOException {
 756         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.BLOCKED).build();
 757         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 758         try {
 759             sendSyncMessage(message);
 760         } catch (UntrustedIdentityException e) {
 761             e.printStackTrace();
 762         }
 763     }
 764
 765     private void requestSyncConfiguration() throws IOException {
 766         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONFIGURATION).build();
 767         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 768         try {
 769             sendSyncMessage(message);
 770         } catch (UntrustedIdentityException e) {
 771             e.printStackTrace();
 772         }
 773     }
 774
 775     private byte[] getSelfUnidentifiedAccessKey() {
 776         return UnidentifiedAccess.deriveAccessKeyFrom(account.getProfileKey());
 777     }
 778
 779     private byte[] getTargetUnidentifiedAccessKey(SignalServiceAddress recipient) {
 780         // TODO implement
 781         return null;
 782     }
 783
 784     private Optional<UnidentifiedAccessPair> getAccessForSync() {
 785         // TODO implement
 786         return Optional.absent();
 787     }
 788
 789     private List<Optional<UnidentifiedAccessPair>> getAccessFor(Collection<SignalServiceAddress> recipients) {
 790         List<Optional<UnidentifiedAccessPair>> result = new ArrayList<>(recipients.size());
 791         for (SignalServiceAddress recipient : recipients) {
 792             result.add(Optional.<UnidentifiedAccessPair>absent());
 793         }
 794         return result;
 795     }
 796
 797     private Optional<UnidentifiedAccessPair> getAccessFor(SignalServiceAddress recipient) {
 798         // TODO implement
 799         return Optional.absent();
 800     }
 801
 802     private void sendSyncMessage(SignalServiceSyncMessage message)
 803             throws IOException, UntrustedIdentityException {
 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         try {
 807             messageSender.sendMessage(message, getAccessForSync());
 808         } catch (UntrustedIdentityException e) {
 809             account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 810             throw e;
 811         }
 812     }
 813
 814     /**
 815      * This method throws an EncapsulatedExceptions exception instead of returning a list of SendMessageResult.
 816      */
 817     private void sendMessageLegacy(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 818             throws EncapsulatedExceptions, IOException {
 819         List<SendMessageResult> results = sendMessage(messageBuilder, recipients);
 820
 821         List<UntrustedIdentityException> untrustedIdentities = new LinkedList<>();
 822         List<UnregisteredUserException> unregisteredUsers = new LinkedList<>();
 823         List<NetworkFailureException> networkExceptions = new LinkedList<>();
 824
 825         for (SendMessageResult result : results) {
 826             if (result.isUnregisteredFailure()) {
 827                 unregisteredUsers.add(new UnregisteredUserException(result.getAddress().getNumber(), null));
 828             } else if (result.isNetworkFailure()) {
 829                 networkExceptions.add(new NetworkFailureException(result.getAddress().getNumber(), null));
 830             } else if (result.getIdentityFailure() != null) {
 831                 untrustedIdentities.add(new UntrustedIdentityException("Untrusted", result.getAddress().getNumber(), result.getIdentityFailure().getIdentityKey()));
 832             }
 833         }
 834         if (!untrustedIdentities.isEmpty() || !unregisteredUsers.isEmpty() || !networkExceptions.isEmpty()) {
 835             throw new EncapsulatedExceptions(untrustedIdentities, unregisteredUsers, networkExceptions);
 836         }
 837     }
 838
 839     private List<SendMessageResult> sendMessage(SignalServiceDataMessage.Builder messageBuilder, Collection<String> recipients)
 840             throws IOException {
 841         Set<SignalServiceAddress> recipientsTS = Utils.getSignalServiceAddresses(recipients, username);
 842         if (recipientsTS == null) {
 843             account.save();
 844             return Collections.emptyList();
 845         }
 846
 847         SignalServiceDataMessage message = null;
 848         try {
 849             SignalServiceMessageSender messageSender = new SignalServiceMessageSender(BaseConfig.serviceConfiguration, username, account.getPassword(),
 850                     account.getDeviceId(), account.getSignalProtocolStore(), BaseConfig.USER_AGENT, account.isMultiDevice(), Optional.fromNullable(messagePipe), Optional.fromNullable(unidentifiedMessagePipe), Optional.<SignalServiceMessageSender.EventListener>absent());
 851
 852             message = messageBuilder.build();
 853             if (message.getGroupInfo().isPresent()) {
 854                 try {
 855                     final boolean isRecipientUpdate = false;
 856                     List<SendMessageResult> result = messageSender.sendMessage(new ArrayList<>(recipientsTS), getAccessFor(recipientsTS), isRecipientUpdate, message);
 857                     for (SendMessageResult r : result) {
 858                         if (r.getIdentityFailure() != null) {
 859                             account.getSignalProtocolStore().saveIdentity(r.getAddress().getNumber(), r.getIdentityFailure().getIdentityKey(), TrustLevel.UNTRUSTED);
 860                         }
 861                     }
 862                     return result;
 863                 } catch (UntrustedIdentityException e) {
 864                     account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 865                     return Collections.emptyList();
 866                 }
 867             } else if (recipientsTS.size() == 1 && recipientsTS.contains(new SignalServiceAddress(username))) {
 868                 SignalServiceAddress recipient = new SignalServiceAddress(username);
 869                 final Optional<UnidentifiedAccessPair> unidentifiedAccess = getAccessFor(recipient);
 870                 SentTranscriptMessage transcript = new SentTranscriptMessage(recipient.getNumber(),
 871                         message.getTimestamp(),
 872                         message,
 873                         message.getExpiresInSeconds(),
 874                         Collections.singletonMap(recipient.getNumber(), unidentifiedAccess.isPresent()),
 875                         false);
 876                 SignalServiceSyncMessage syncMessage = SignalServiceSyncMessage.forSentTranscript(transcript);
 877
 878                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 879                 try {
 880                     messageSender.sendMessage(syncMessage, unidentifiedAccess);
 881                 } catch (UntrustedIdentityException e) {
 882                     account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 883                     results.add(SendMessageResult.identityFailure(recipient, e.getIdentityKey()));
 884                 }
 885                 return results;
 886             } else {
 887                 // Send to all individually, so sync messages are sent correctly
 888                 List<SendMessageResult> results = new ArrayList<>(recipientsTS.size());
 889                 for (SignalServiceAddress address : recipientsTS) {
 890                     ThreadInfo thread = account.getThreadStore().getThread(address.getNumber());
 891                     if (thread != null) {
 892                         messageBuilder.withExpiration(thread.messageExpirationTime);
 893                     } else {
 894                         messageBuilder.withExpiration(0);
 895                     }
 896                     message = messageBuilder.build();
 897                     try {
 898                         SendMessageResult result = messageSender.sendMessage(address, getAccessFor(address), message);
 899                         results.add(result);
 900                     } catch (UntrustedIdentityException e) {
 901                         account.getSignalProtocolStore().saveIdentity(e.getE164Number(), e.getIdentityKey(), TrustLevel.UNTRUSTED);
 902                         results.add(SendMessageResult.identityFailure(address, e.getIdentityKey()));
 903                     }
 904                 }
 905                 return results;
 906             }
 907         } finally {
 908             if (message != null && message.isEndSession()) {
 909                 for (SignalServiceAddress recipient : recipientsTS) {
 910                     handleEndSession(recipient.getNumber());
 911                 }
 912             }
 913             account.save();
 914         }
 915     }
 916
 917     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) throws InvalidMetadataMessageException, ProtocolInvalidMessageException, ProtocolDuplicateMessageException, ProtocolLegacyMessageException, ProtocolInvalidKeyIdException, InvalidMetadataVersionException, ProtocolInvalidVersionException, ProtocolNoSessionException, ProtocolInvalidKeyException, ProtocolUntrustedIdentityException, SelfSendException, UnsupportedDataMessageException {
 918         SignalServiceCipher cipher = new SignalServiceCipher(new SignalServiceAddress(username), account.getSignalProtocolStore(), Utils.getCertificateValidator());
 919         try {
 920             return cipher.decrypt(envelope);
 921         } catch (ProtocolUntrustedIdentityException e) {
 922             // TODO We don't get the new untrusted identity from ProtocolUntrustedIdentityException anymore ... we need to get it from somewhere else
 923 //            account.getSignalProtocolStore().saveIdentity(e.getSender(), e.getUntrustedIdentity(), TrustLevel.UNTRUSTED);
 924             throw e;
 925         }
 926     }
 927
 928     private void handleEndSession(String source) {
 929         account.getSignalProtocolStore().deleteAllSessions(source);
 930     }
 931
 932     private void handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, String source, String destination, boolean ignoreAttachments) {
 933         String threadId;
 934         if (message.getGroupInfo().isPresent()) {
 935             SignalServiceGroup groupInfo = message.getGroupInfo().get();
 936             threadId = Base64.encodeBytes(groupInfo.getGroupId());
 937             GroupInfo group = account.getGroupStore().getGroup(groupInfo.getGroupId());
 938             switch (groupInfo.getType()) {
 939                 case UPDATE:
 940                     if (group == null) {
 941                         group = new GroupInfo(groupInfo.getGroupId());
 942                     }
 943
 944                     if (groupInfo.getAvatar().isPresent()) {
 945                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
 946                         if (avatar.isPointer()) {
 947                             try {
 948                                 retrieveGroupAvatarAttachment(avatar.asPointer(), group.groupId);
 949                             } catch (IOException | InvalidMessageException e) {
 950                                 System.err.println("Failed to retrieve group avatar (" + avatar.asPointer().getId() + "): " + e.getMessage());
 951                             }
 952                         }
 953                     }
 954
 955                     if (groupInfo.getName().isPresent()) {
 956                         group.name = groupInfo.getName().get();
 957                     }
 958
 959                     if (groupInfo.getMembers().isPresent()) {
 960                         group.members.addAll(groupInfo.getMembers().get());
 961                     }
 962
 963                     account.getGroupStore().updateGroup(group);
 964                     break;
 965                 case DELIVER:
 966                     if (group == null) {
 967                         try {
 968                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 969                         } catch (IOException | EncapsulatedExceptions e) {
 970                             e.printStackTrace();
 971                         }
 972                     }
 973                     break;
 974                 case QUIT:
 975                     if (group == null) {
 976                         try {
 977                             sendGroupInfoRequest(groupInfo.getGroupId(), source);
 978                         } catch (IOException | EncapsulatedExceptions e) {
 979                             e.printStackTrace();
 980                         }
 981                     } else {
 982                         group.members.remove(source);
 983                         account.getGroupStore().updateGroup(group);
 984                     }
 985                     break;
 986                 case REQUEST_INFO:
 987                     if (group != null) {
 988                         try {
 989                             sendUpdateGroupMessage(groupInfo.getGroupId(), source);
 990                         } catch (IOException | EncapsulatedExceptions e) {
 991                             e.printStackTrace();
 992                         } catch (NotAGroupMemberException e) {
 993                             // We have left this group, so don't send a group update message
 994                         }
 995                     }
 996                     break;
 997             }
 998         } else {
 999             if (isSync) {
1000                 threadId = destination;
1001             } else {
1002                 threadId = source;
1003             }
1004         }
1005         if (message.isEndSession()) {
1006             handleEndSession(isSync ? destination : source);
1007         }
1008         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
1009             ThreadInfo thread = account.getThreadStore().getThread(threadId);
1010             if (thread == null) {
1011                 thread = new ThreadInfo();
1012                 thread.id = threadId;
1013             }
1014             if (thread.messageExpirationTime != message.getExpiresInSeconds()) {
1015                 thread.messageExpirationTime = message.getExpiresInSeconds();
1016                 account.getThreadStore().updateThread(thread);
1017             }
1018         }
1019         if (message.getAttachments().isPresent() && !ignoreAttachments) {
1020             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1021                 if (attachment.isPointer()) {
1022                     try {
1023                         retrieveAttachment(attachment.asPointer());
1024                     } catch (IOException | InvalidMessageException e) {
1025                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
1026                     }
1027                 }
1028             }
1029         }
1030         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
1031             if (source.equals(username)) {
1032                 this.account.setProfileKey(message.getProfileKey().get());
1033             }
1034             ContactInfo contact = account.getContactStore().getContact(source);
1035             if (contact == null) {
1036                 contact = new ContactInfo();
1037                 contact.number = source;
1038             }
1039             contact.profileKey = Base64.encodeBytes(message.getProfileKey().get());
1040         }
1041     }
1042
1043     private void retryFailedReceivedMessages(ReceiveMessageHandler handler, boolean ignoreAttachments) {
1044         final File cachePath = new File(getMessageCachePath());
1045         if (!cachePath.exists()) {
1046             return;
1047         }
1048         for (final File dir : Objects.requireNonNull(cachePath.listFiles())) {
1049             if (!dir.isDirectory()) {
1050                 continue;
1051             }
1052
1053             for (final File fileEntry : Objects.requireNonNull(dir.listFiles())) {
1054                 if (!fileEntry.isFile()) {
1055                     continue;
1056                 }
1057                 SignalServiceEnvelope envelope;
1058                 try {
1059                     envelope = Utils.loadEnvelope(fileEntry);
1060                     if (envelope == null) {
1061                         continue;
1062                     }
1063                 } catch (IOException e) {
1064                     e.printStackTrace();
1065                     continue;
1066                 }
1067                 SignalServiceContent content = null;
1068                 if (!envelope.isReceipt()) {
1069                     try {
1070                         content = decryptMessage(envelope);
1071                     } catch (Exception e) {
1072                         continue;
1073                     }
1074                     handleMessage(envelope, content, ignoreAttachments);
1075                 }
1076                 account.save();
1077                 handler.handleMessage(envelope, content, null);
1078                 try {
1079                     Files.delete(fileEntry.toPath());
1080                 } catch (IOException e) {
1081                     System.err.println("Failed to delete cached message file “" + fileEntry + "”: " + e.getMessage());
1082                 }
1083             }
1084             // Try to delete directory if empty
1085             dir.delete();
1086         }
1087     }
1088
1089     public void receiveMessages(long timeout, TimeUnit unit, boolean returnOnTimeout, boolean ignoreAttachments, ReceiveMessageHandler handler) throws IOException {
1090         retryFailedReceivedMessages(handler, ignoreAttachments);
1091         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1092
1093         try {
1094             if (messagePipe == null) {
1095                 messagePipe = messageReceiver.createMessagePipe();
1096             }
1097
1098             while (true) {
1099                 SignalServiceEnvelope envelope;
1100                 SignalServiceContent content = null;
1101                 Exception exception = null;
1102                 final long now = new Date().getTime();
1103                 try {
1104                     envelope = messagePipe.read(timeout, unit, new SignalServiceMessagePipe.MessagePipeCallback() {
1105                         @Override
1106                         public void onMessage(SignalServiceEnvelope envelope) {
1107                             // store message on disk, before acknowledging receipt to the server
1108                             try {
1109                                 File cacheFile = getMessageCacheFile(envelope.getSource(), now, envelope.getTimestamp());
1110                                 Utils.storeEnvelope(envelope, cacheFile);
1111                             } catch (IOException e) {
1112                                 System.err.println("Failed to store encrypted message in disk cache, ignoring: " + e.getMessage());
1113                             }
1114                         }
1115                     });
1116                 } catch (TimeoutException e) {
1117                     if (returnOnTimeout)
1118                         return;
1119                     continue;
1120                 } catch (InvalidVersionException e) {
1121                     System.err.println("Ignoring error: " + e.getMessage());
1122                     continue;
1123                 }
1124                 if (!envelope.isReceipt()) {
1125                     try {
1126                         content = decryptMessage(envelope);
1127                     } catch (Exception e) {
1128                         exception = e;
1129                     }
1130                     handleMessage(envelope, content, ignoreAttachments);
1131                 }
1132                 account.save();
1133                 handler.handleMessage(envelope, content, exception);
1134                 if (!(exception instanceof ProtocolUntrustedIdentityException)) {
1135                     File cacheFile = null;
1136                     try {
1137                         cacheFile = getMessageCacheFile(envelope.getSource(), now, envelope.getTimestamp());
1138                         Files.delete(cacheFile.toPath());
1139                         // Try to delete directory if empty
1140                         new File(getMessageCachePath()).delete();
1141                     } catch (IOException e) {
1142                         System.err.println("Failed to delete cached message file “" + cacheFile + "”: " + e.getMessage());
1143                     }
1144                 }
1145             }
1146         } finally {
1147             if (messagePipe != null) {
1148                 messagePipe.shutdown();
1149                 messagePipe = null;
1150             }
1151         }
1152     }
1153
1154     private void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments) {
1155         if (content != null) {
1156             if (content.getDataMessage().isPresent()) {
1157                 SignalServiceDataMessage message = content.getDataMessage().get();
1158                 handleSignalServiceDataMessage(message, false, envelope.getSource(), username, ignoreAttachments);
1159             }
1160             if (content.getSyncMessage().isPresent()) {
1161                 account.setMultiDevice(true);
1162                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
1163                 if (syncMessage.getSent().isPresent()) {
1164                     SignalServiceDataMessage message = syncMessage.getSent().get().getMessage();
1165                     handleSignalServiceDataMessage(message, true, envelope.getSource(), syncMessage.getSent().get().getDestination().get(), ignoreAttachments);
1166                 }
1167                 if (syncMessage.getRequest().isPresent()) {
1168                     RequestMessage rm = syncMessage.getRequest().get();
1169                     if (rm.isContactsRequest()) {
1170                         try {
1171                             sendContacts();
1172                         } catch (UntrustedIdentityException | IOException e) {
1173                             e.printStackTrace();
1174                         }
1175                     }
1176                     if (rm.isGroupsRequest()) {
1177                         try {
1178                             sendGroups();
1179                         } catch (UntrustedIdentityException | IOException e) {
1180                             e.printStackTrace();
1181                         }
1182                     }
1183                     // TODO Handle rm.isBlockedListRequest(); rm.isConfigurationRequest();
1184                 }
1185                 if (syncMessage.getGroups().isPresent()) {
1186                     File tmpFile = null;
1187                     try {
1188                         tmpFile = IOUtils.createTempFile();
1189                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer(), tmpFile)) {
1190                             DeviceGroupsInputStream s = new DeviceGroupsInputStream(attachmentAsStream);
1191                             DeviceGroup g;
1192                             while ((g = s.read()) != null) {
1193                                 GroupInfo syncGroup = account.getGroupStore().getGroup(g.getId());
1194                                 if (syncGroup == null) {
1195                                     syncGroup = new GroupInfo(g.getId());
1196                                 }
1197                                 if (g.getName().isPresent()) {
1198                                     syncGroup.name = g.getName().get();
1199                                 }
1200                                 syncGroup.members.addAll(g.getMembers());
1201                                 syncGroup.active = g.isActive();
1202                                 if (g.getColor().isPresent()) {
1203                                     syncGroup.color = g.getColor().get();
1204                                 }
1205
1206                                 if (g.getAvatar().isPresent()) {
1207                                     retrieveGroupAvatarAttachment(g.getAvatar().get(), syncGroup.groupId);
1208                                 }
1209                                 account.getGroupStore().updateGroup(syncGroup);
1210                             }
1211                         }
1212                     } catch (Exception e) {
1213                         e.printStackTrace();
1214                     } finally {
1215                         if (tmpFile != null) {
1216                             try {
1217                                 Files.delete(tmpFile.toPath());
1218                             } catch (IOException e) {
1219                                 System.err.println("Failed to delete received groups temp file “" + tmpFile + "”: " + e.getMessage());
1220                             }
1221                         }
1222                     }
1223                 }
1224                 if (syncMessage.getBlockedList().isPresent()) {
1225                     // TODO store list of blocked numbers
1226                 }
1227                 if (syncMessage.getContacts().isPresent()) {
1228                     File tmpFile = null;
1229                     try {
1230                         tmpFile = IOUtils.createTempFile();
1231                         final ContactsMessage contactsMessage = syncMessage.getContacts().get();
1232                         try (InputStream attachmentAsStream = retrieveAttachmentAsStream(contactsMessage.getContactsStream().asPointer(), tmpFile)) {
1233                             DeviceContactsInputStream s = new DeviceContactsInputStream(attachmentAsStream);
1234                             if (contactsMessage.isComplete()) {
1235                                 account.getContactStore().clear();
1236                             }
1237                             DeviceContact c;
1238                             while ((c = s.read()) != null) {
1239                                 if (c.getNumber().equals(account.getUsername()) && c.getProfileKey().isPresent()) {
1240                                     account.setProfileKey(c.getProfileKey().get());
1241                                 }
1242                                 ContactInfo contact = account.getContactStore().getContact(c.getNumber());
1243                                 if (contact == null) {
1244                                     contact = new ContactInfo();
1245                                     contact.number = c.getNumber();
1246                                 }
1247                                 if (c.getName().isPresent()) {
1248                                     contact.name = c.getName().get();
1249                                 }
1250                                 if (c.getColor().isPresent()) {
1251                                     contact.color = c.getColor().get();
1252                                 }
1253                                 if (c.getProfileKey().isPresent()) {
1254                                     contact.profileKey = Base64.encodeBytes(c.getProfileKey().get());
1255                                 }
1256                                 if (c.getVerified().isPresent()) {
1257                                     final VerifiedMessage verifiedMessage = c.getVerified().get();
1258                                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1259                                 }
1260                                 if (c.getExpirationTimer().isPresent()) {
1261                                     ThreadInfo thread = account.getThreadStore().getThread(c.getNumber());
1262                                     if (thread == null) {
1263                                         thread = new ThreadInfo();
1264                                         thread.id = c.getNumber();
1265                                     }
1266                                     thread.messageExpirationTime = c.getExpirationTimer().get();
1267                                     account.getThreadStore().updateThread(thread);
1268                                 }
1269                                 if (c.isBlocked()) {
1270                                     // TODO store list of blocked numbers
1271                                 }
1272                                 account.getContactStore().updateContact(contact);
1273
1274                                 if (c.getAvatar().isPresent()) {
1275                                     retrieveContactAvatarAttachment(c.getAvatar().get(), contact.number);
1276                                 }
1277                             }
1278                         }
1279                     } catch (Exception e) {
1280                         e.printStackTrace();
1281                     } finally {
1282                         if (tmpFile != null) {
1283                             try {
1284                                 Files.delete(tmpFile.toPath());
1285                             } catch (IOException e) {
1286                                 System.err.println("Failed to delete received contacts temp file “" + tmpFile + "”: " + e.getMessage());
1287                             }
1288                         }
1289                     }
1290                 }
1291                 if (syncMessage.getVerified().isPresent()) {
1292                     final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1293                     account.getSignalProtocolStore().saveIdentity(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey(), TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
1294                 }
1295                 if (syncMessage.getConfiguration().isPresent()) {
1296                     // TODO
1297                 }
1298             }
1299         }
1300     }
1301
1302     private File getContactAvatarFile(String number) {
1303         return new File(avatarsPath, "contact-" + number);
1304     }
1305
1306     private File retrieveContactAvatarAttachment(SignalServiceAttachment attachment, String number) throws IOException, InvalidMessageException {
1307         IOUtils.createPrivateDirectories(avatarsPath);
1308         if (attachment.isPointer()) {
1309             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1310             return retrieveAttachment(pointer, getContactAvatarFile(number), false);
1311         } else {
1312             SignalServiceAttachmentStream stream = attachment.asStream();
1313             return Utils.retrieveAttachment(stream, getContactAvatarFile(number));
1314         }
1315     }
1316
1317     private File getGroupAvatarFile(byte[] groupId) {
1318         return new File(avatarsPath, "group-" + Base64.encodeBytes(groupId).replace("/", "_"));
1319     }
1320
1321     private File retrieveGroupAvatarAttachment(SignalServiceAttachment attachment, byte[] groupId) throws IOException, InvalidMessageException {
1322         IOUtils.createPrivateDirectories(avatarsPath);
1323         if (attachment.isPointer()) {
1324             SignalServiceAttachmentPointer pointer = attachment.asPointer();
1325             return retrieveAttachment(pointer, getGroupAvatarFile(groupId), false);
1326         } else {
1327             SignalServiceAttachmentStream stream = attachment.asStream();
1328             return Utils.retrieveAttachment(stream, getGroupAvatarFile(groupId));
1329         }
1330     }
1331
1332     public File getAttachmentFile(long attachmentId) {
1333         return new File(attachmentsPath, attachmentId + "");
1334     }
1335
1336     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
1337         IOUtils.createPrivateDirectories(attachmentsPath);
1338         return retrieveAttachment(pointer, getAttachmentFile(pointer.getId()), true);
1339     }
1340
1341     private File retrieveAttachment(SignalServiceAttachmentPointer pointer, File outputFile, boolean storePreview) throws IOException, InvalidMessageException {
1342         if (storePreview && pointer.getPreview().isPresent()) {
1343             File previewFile = new File(outputFile + ".preview");
1344             try (OutputStream output = new FileOutputStream(previewFile)) {
1345                 byte[] preview = pointer.getPreview().get();
1346                 output.write(preview, 0, preview.length);
1347             } catch (FileNotFoundException e) {
1348                 e.printStackTrace();
1349                 return null;
1350             }
1351         }
1352
1353         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1354
1355         File tmpFile = IOUtils.createTempFile();
1356         try (InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE)) {
1357             try (OutputStream output = new FileOutputStream(outputFile)) {
1358                 byte[] buffer = new byte[4096];
1359                 int read;
1360
1361                 while ((read = input.read(buffer)) != -1) {
1362                     output.write(buffer, 0, read);
1363                 }
1364             } catch (FileNotFoundException e) {
1365                 e.printStackTrace();
1366                 return null;
1367             }
1368         } finally {
1369             try {
1370                 Files.delete(tmpFile.toPath());
1371             } catch (IOException e) {
1372                 System.err.println("Failed to delete received attachment temp file “" + tmpFile + "”: " + e.getMessage());
1373             }
1374         }
1375         return outputFile;
1376     }
1377
1378     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer, File tmpFile) throws IOException, InvalidMessageException {
1379         final SignalServiceMessageReceiver messageReceiver = getMessageReceiver();
1380         return messageReceiver.retrieveAttachment(pointer, tmpFile, BaseConfig.MAX_ATTACHMENT_SIZE);
1381     }
1382
1383     @Override
1384     public boolean isRemote() {
1385         return false;
1386     }
1387
1388     private void sendGroups() throws IOException, UntrustedIdentityException {
1389         File groupsFile = IOUtils.createTempFile();
1390
1391         try {
1392             try (OutputStream fos = new FileOutputStream(groupsFile)) {
1393                 DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(fos);
1394                 for (GroupInfo record : account.getGroupStore().getGroups()) {
1395                     ThreadInfo info = account.getThreadStore().getThread(Base64.encodeBytes(record.groupId));
1396                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
1397                             new ArrayList<>(record.members), createGroupAvatarAttachment(record.groupId),
1398                             record.active, Optional.fromNullable(info != null ? info.messageExpirationTime : null),
1399                             Optional.fromNullable(record.color), false));
1400                 }
1401             }
1402
1403             if (groupsFile.exists() && groupsFile.length() > 0) {
1404                 try (FileInputStream groupsFileStream = new FileInputStream(groupsFile)) {
1405                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1406                             .withStream(groupsFileStream)
1407                             .withContentType("application/octet-stream")
1408                             .withLength(groupsFile.length())
1409                             .build();
1410
1411                     sendSyncMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
1412                 }
1413             }
1414         } finally {
1415             try {
1416                 Files.delete(groupsFile.toPath());
1417             } catch (IOException e) {
1418                 System.err.println("Failed to delete groups temp file “" + groupsFile + "”: " + e.getMessage());
1419             }
1420         }
1421     }
1422
1423     public void sendContacts() throws IOException, UntrustedIdentityException {
1424         File contactsFile = IOUtils.createTempFile();
1425
1426         try {
1427             try (OutputStream fos = new FileOutputStream(contactsFile)) {
1428                 DeviceContactsOutputStream out = new DeviceContactsOutputStream(fos);
1429                 for (ContactInfo record : account.getContactStore().getContacts()) {
1430                     VerifiedMessage verifiedMessage = null;
1431                     ThreadInfo info = account.getThreadStore().getThread(record.number);
1432                     if (getIdentities().containsKey(record.number)) {
1433                         JsonIdentityKeyStore.Identity currentIdentity = null;
1434                         for (JsonIdentityKeyStore.Identity id : getIdentities().get(record.number)) {
1435                             if (currentIdentity == null || id.getDateAdded().after(currentIdentity.getDateAdded())) {
1436                                 currentIdentity = id;
1437                             }
1438                         }
1439                         if (currentIdentity != null) {
1440                             verifiedMessage = new VerifiedMessage(record.number, currentIdentity.getIdentityKey(), currentIdentity.getTrustLevel().toVerifiedState(), currentIdentity.getDateAdded().getTime());
1441                         }
1442                     }
1443
1444                     byte[] profileKey = record.profileKey == null ? null : Base64.decode(record.profileKey);
1445                     // TODO store list of blocked numbers
1446                     boolean blocked = false;
1447                     out.write(new DeviceContact(record.number, Optional.fromNullable(record.name),
1448                             createContactAvatarAttachment(record.number), Optional.fromNullable(record.color),
1449                             Optional.fromNullable(verifiedMessage), Optional.fromNullable(profileKey), blocked, Optional.fromNullable(info != null ? info.messageExpirationTime : null)));
1450                 }
1451
1452                 if (account.getProfileKey() != null) {
1453                     // Send our own profile key as well
1454                     out.write(new DeviceContact(account.getUsername(),
1455                             Optional.<String>absent(), Optional.<SignalServiceAttachmentStream>absent(),
1456                             Optional.<String>absent(), Optional.<VerifiedMessage>absent(),
1457                             Optional.of(account.getProfileKey()),
1458                             false, Optional.<Integer>absent()));
1459                 }
1460             }
1461
1462             if (contactsFile.exists() && contactsFile.length() > 0) {
1463                 try (FileInputStream contactsFileStream = new FileInputStream(contactsFile)) {
1464                     SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
1465                             .withStream(contactsFileStream)
1466                             .withContentType("application/octet-stream")
1467                             .withLength(contactsFile.length())
1468                             .build();
1469
1470                     sendSyncMessage(SignalServiceSyncMessage.forContacts(new ContactsMessage(attachmentStream, true)));
1471                 }
1472             }
1473         } finally {
1474             try {
1475                 Files.delete(contactsFile.toPath());
1476             } catch (IOException e) {
1477                 System.err.println("Failed to delete contacts temp file “" + contactsFile + "”: " + e.getMessage());
1478             }
1479         }
1480     }
1481
1482     private void sendVerifiedMessage(String destination, IdentityKey identityKey, TrustLevel trustLevel) throws IOException, UntrustedIdentityException {
1483         VerifiedMessage verifiedMessage = new VerifiedMessage(destination, identityKey, trustLevel.toVerifiedState(), System.currentTimeMillis());
1484         sendSyncMessage(SignalServiceSyncMessage.forVerified(verifiedMessage));
1485     }
1486
1487     public List<ContactInfo> getContacts() {
1488         return account.getContactStore().getContacts();
1489     }
1490
1491     public ContactInfo getContact(String number) {
1492         return account.getContactStore().getContact(number);
1493     }
1494
1495     public GroupInfo getGroup(byte[] groupId) {
1496         return account.getGroupStore().getGroup(groupId);
1497     }
1498
1499     public Map<String, List<JsonIdentityKeyStore.Identity>> getIdentities() {
1500         return account.getSignalProtocolStore().getIdentities();
1501     }
1502
1503     public List<JsonIdentityKeyStore.Identity> getIdentities(String number) {
1504         return account.getSignalProtocolStore().getIdentities(number);
1505     }
1506
1507     /**
1508      * Trust this the identity with this fingerprint
1509      *
1510      * @param name        username of the identity
1511      * @param fingerprint Fingerprint
1512      */
1513     public boolean trustIdentityVerified(String name, byte[] fingerprint) {
1514         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1515         if (ids == null) {
1516             return false;
1517         }
1518         for (JsonIdentityKeyStore.Identity id : ids) {
1519             if (!Arrays.equals(id.getIdentityKey().serialize(), fingerprint)) {
1520                 continue;
1521             }
1522
1523             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1524             try {
1525                 sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1526             } catch (IOException | UntrustedIdentityException e) {
1527                 e.printStackTrace();
1528             }
1529             account.save();
1530             return true;
1531         }
1532         return false;
1533     }
1534
1535     /**
1536      * Trust this the identity with this safety number
1537      *
1538      * @param name         username of the identity
1539      * @param safetyNumber Safety number
1540      */
1541     public boolean trustIdentityVerifiedSafetyNumber(String name, String safetyNumber) {
1542         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1543         if (ids == null) {
1544             return false;
1545         }
1546         for (JsonIdentityKeyStore.Identity id : ids) {
1547             if (!safetyNumber.equals(computeSafetyNumber(name, id.getIdentityKey()))) {
1548                 continue;
1549             }
1550
1551             account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1552             try {
1553                 sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_VERIFIED);
1554             } catch (IOException | UntrustedIdentityException e) {
1555                 e.printStackTrace();
1556             }
1557             account.save();
1558             return true;
1559         }
1560         return false;
1561     }
1562
1563     /**
1564      * Trust all keys of this identity without verification
1565      *
1566      * @param name username of the identity
1567      */
1568     public boolean trustIdentityAllKeys(String name) {
1569         List<JsonIdentityKeyStore.Identity> ids = account.getSignalProtocolStore().getIdentities(name);
1570         if (ids == null) {
1571             return false;
1572         }
1573         for (JsonIdentityKeyStore.Identity id : ids) {
1574             if (id.getTrustLevel() == TrustLevel.UNTRUSTED) {
1575                 account.getSignalProtocolStore().saveIdentity(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1576                 try {
1577                     sendVerifiedMessage(name, id.getIdentityKey(), TrustLevel.TRUSTED_UNVERIFIED);
1578                 } catch (IOException | UntrustedIdentityException e) {
1579                     e.printStackTrace();
1580                 }
1581             }
1582         }
1583         account.save();
1584         return true;
1585     }
1586
1587     public String computeSafetyNumber(String theirUsername, IdentityKey theirIdentityKey) {
1588         return Utils.computeSafetyNumber(username, getIdentity(), theirUsername, theirIdentityKey);
1589     }
1590
1591     public interface ReceiveMessageHandler {
1592
1593         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, Throwable e);
1594     }
1595 }