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

   1 /**
   2  * Copyright (C) 2015 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;
  18
  19 import com.fasterxml.jackson.annotation.JsonAutoDetect;
  20 import com.fasterxml.jackson.annotation.PropertyAccessor;
  21 import com.fasterxml.jackson.core.JsonGenerator;
  22 import com.fasterxml.jackson.databind.DeserializationFeature;
  23 import com.fasterxml.jackson.databind.ObjectMapper;
  24 import com.fasterxml.jackson.databind.SerializationFeature;
  25 import com.fasterxml.jackson.databind.node.ObjectNode;
  26 import net.sourceforge.argparse4j.ArgumentParsers;
  27 import net.sourceforge.argparse4j.impl.Arguments;
  28 import net.sourceforge.argparse4j.inf.*;
  29 import org.apache.http.util.TextUtils;
  30 import org.asamk.Signal;
  31 import org.asamk.signal.storage.contacts.ContactInfo;
  32 import org.asamk.signal.storage.groups.GroupInfo;
  33 import org.asamk.signal.storage.protocol.JsonIdentityKeyStore;
  34 import org.asamk.signal.util.Hex;
  35 import org.freedesktop.dbus.DBusConnection;
  36 import org.freedesktop.dbus.DBusSigHandler;
  37 import org.freedesktop.dbus.exceptions.DBusException;
  38 import org.freedesktop.dbus.exceptions.DBusExecutionException;
  39 import org.whispersystems.libsignal.InvalidKeyException;
  40 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  41 import org.whispersystems.signalservice.api.messages.*;
  42 import org.whispersystems.signalservice.api.messages.multidevice.*;
  43 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  44 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  45 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  46 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  47 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
  48 import org.whispersystems.signalservice.internal.util.Base64;
  49
  50 import java.io.File;
  51 import java.io.IOException;
  52 import java.io.InputStream;
  53 import java.io.StringWriter;
  54 import java.net.URI;
  55 import java.net.URISyntaxException;
  56 import java.nio.charset.Charset;
  57 import java.security.Security;
  58 import java.text.DateFormat;
  59 import java.text.SimpleDateFormat;
  60 import java.util.*;
  61 import java.util.concurrent.TimeUnit;
  62 import java.util.concurrent.TimeoutException;
  63
  64 public class Main {
  65
  66     public static final String SIGNAL_BUSNAME = "org.asamk.Signal";
  67     public static final String SIGNAL_OBJECTPATH = "/org/asamk/Signal";
  68
  69     private static final TimeZone tzUTC = TimeZone.getTimeZone("UTC");
  70
  71     public static void main(String[] args) {
  72         // Workaround for BKS truststore
  73         Security.insertProviderAt(new org.bouncycastle.jce.provider.BouncyCastleProvider(), 1);
  74
  75         Namespace ns = parseArgs(args);
  76         if (ns == null) {
  77             System.exit(1);
  78         }
  79
  80         int res = handleCommands(ns);
  81         System.exit(res);
  82     }
  83
  84     private static int handleCommands(Namespace ns) {
  85         final String username = ns.getString("username");
  86         Manager m;
  87         Signal ts;
  88         DBusConnection dBusConn = null;
  89         try {
  90             if (ns.getBoolean("dbus") || ns.getBoolean("dbus_system")) {
  91                 try {
  92                     m = null;
  93                     int busType;
  94                     if (ns.getBoolean("dbus_system")) {
  95                         busType = DBusConnection.SYSTEM;
  96                     } else {
  97                         busType = DBusConnection.SESSION;
  98                     }
  99                     dBusConn = DBusConnection.getConnection(busType);
 100                     ts = (Signal) dBusConn.getRemoteObject(
 101                             SIGNAL_BUSNAME, SIGNAL_OBJECTPATH,
 102                             Signal.class);
 103                 } catch (UnsatisfiedLinkError e) {
 104                     System.err.println("Missing native library dependency for dbus service: " + e.getMessage());
 105                     return 1;
 106                 } catch (DBusException e) {
 107                     e.printStackTrace();
 108                     if (dBusConn != null) {
 109                         dBusConn.disconnect();
 110                     }
 111                     return 3;
 112                 }
 113             } else {
 114                 String settingsPath = ns.getString("config");
 115                 if (TextUtils.isEmpty(settingsPath)) {
 116                     settingsPath = System.getProperty("user.home") + "/.config/signal";
 117                     if (!new File(settingsPath).exists()) {
 118                         String legacySettingsPath = System.getProperty("user.home") + "/.config/textsecure";
 119                         if (new File(legacySettingsPath).exists()) {
 120                             settingsPath = legacySettingsPath;
 121                         }
 122                     }
 123                 }
 124
 125                 m = new Manager(username, settingsPath);
 126                 ts = m;
 127                 if (m.userExists()) {
 128                     try {
 129                         m.init();
 130                     } catch (Exception e) {
 131                         System.err.println("Error loading state file \"" + m.getFileName() + "\": " + e.getMessage());
 132                         return 2;
 133                     }
 134                 }
 135             }
 136
 137             switch (ns.getString("command")) {
 138                 case "register":
 139                     if (dBusConn != null) {
 140                         System.err.println("register is not yet implemented via dbus");
 141                         return 1;
 142                     }
 143                     if (!m.userHasKeys()) {
 144                         m.createNewIdentity();
 145                     }
 146                     try {
 147                         m.register(ns.getBoolean("voice"));
 148                     } catch (IOException e) {
 149                         System.err.println("Request verify error: " + e.getMessage());
 150                         return 3;
 151                     }
 152                     break;
 153                 case "unregister":
 154                     if (dBusConn != null) {
 155                         System.err.println("unregister is not yet implemented via dbus");
 156                         return 1;
 157                     }
 158                     if (!m.isRegistered()) {
 159                         System.err.println("User is not registered.");
 160                         return 1;
 161                     }
 162                     try {
 163                         m.unregister();
 164                     } catch (IOException e) {
 165                         System.err.println("Unregister error: " + e.getMessage());
 166                         return 3;
 167                     }
 168                     break;
 169                 case "updateAccount":
 170                     if (dBusConn != null) {
 171                         System.err.println("updateAccount is not yet implemented via dbus");
 172                         return 1;
 173                     }
 174                     if (!m.isRegistered()) {
 175                         System.err.println("User is not registered.");
 176                         return 1;
 177                     }
 178                     try {
 179                         m.updateAccountAttributes();
 180                     } catch (IOException e) {
 181                         System.err.println("UpdateAccount error: " + e.getMessage());
 182                         return 3;
 183                     }
 184                     break;
 185                 case "verify":
 186                     if (dBusConn != null) {
 187                         System.err.println("verify is not yet implemented via dbus");
 188                         return 1;
 189                     }
 190                     if (!m.userHasKeys()) {
 191                         System.err.println("User has no keys, first call register.");
 192                         return 1;
 193                     }
 194                     if (m.isRegistered()) {
 195                         System.err.println("User registration is already verified");
 196                         return 1;
 197                     }
 198                     try {
 199                         m.verifyAccount(ns.getString("verificationCode"));
 200                     } catch (IOException e) {
 201                         System.err.println("Verify error: " + e.getMessage());
 202                         return 3;
 203                     }
 204                     break;
 205                 case "link":
 206                     if (dBusConn != null) {
 207                         System.err.println("link is not yet implemented via dbus");
 208                         return 1;
 209                     }
 210
 211                     // When linking, username is null and we always have to create keys
 212                     m.createNewIdentity();
 213
 214                     String deviceName = ns.getString("name");
 215                     if (deviceName == null) {
 216                         deviceName = "cli";
 217                     }
 218                     try {
 219                         System.out.println(m.getDeviceLinkUri());
 220                         m.finishDeviceLink(deviceName);
 221                         System.out.println("Associated with: " + m.getUsername());
 222                     } catch (TimeoutException e) {
 223                         System.err.println("Link request timed out, please try again.");
 224                         return 3;
 225                     } catch (IOException e) {
 226                         System.err.println("Link request error: " + e.getMessage());
 227                         return 3;
 228                     } catch (AssertionError e) {
 229                         handleAssertionError(e);
 230                         return 1;
 231                     } catch (InvalidKeyException e) {
 232                         e.printStackTrace();
 233                         return 2;
 234                     } catch (UserAlreadyExists e) {
 235                         System.err.println("The user " + e.getUsername() + " already exists\nDelete \"" + e.getFileName() + "\" before trying again.");
 236                         return 1;
 237                     }
 238                     break;
 239                 case "addDevice":
 240                     if (dBusConn != null) {
 241                         System.err.println("link is not yet implemented via dbus");
 242                         return 1;
 243                     }
 244                     if (!m.isRegistered()) {
 245                         System.err.println("User is not registered.");
 246                         return 1;
 247                     }
 248                     try {
 249                         m.addDeviceLink(new URI(ns.getString("uri")));
 250                     } catch (IOException e) {
 251                         e.printStackTrace();
 252                         return 3;
 253                     } catch (InvalidKeyException e) {
 254                         e.printStackTrace();
 255                         return 2;
 256                     } catch (AssertionError e) {
 257                         handleAssertionError(e);
 258                         return 1;
 259                     } catch (URISyntaxException e) {
 260                         e.printStackTrace();
 261                         return 2;
 262                     }
 263                     break;
 264                 case "listDevices":
 265                     if (dBusConn != null) {
 266                         System.err.println("listDevices is not yet implemented via dbus");
 267                         return 1;
 268                     }
 269                     if (!m.isRegistered()) {
 270                         System.err.println("User is not registered.");
 271                         return 1;
 272                     }
 273                     try {
 274                         List<DeviceInfo> devices = m.getLinkedDevices();
 275                         for (DeviceInfo d : devices) {
 276                             System.out.println("Device " + d.getId() + (d.getId() == m.getDeviceId() ? " (this device)" : "") + ":");
 277                             System.out.println(" Name: " + d.getName());
 278                             System.out.println(" Created: " + formatTimestamp(d.getCreated()));
 279                             System.out.println(" Last seen: " + formatTimestamp(d.getLastSeen()));
 280                         }
 281                     } catch (IOException e) {
 282                         e.printStackTrace();
 283                         return 3;
 284                     }
 285                     break;
 286                 case "removeDevice":
 287                     if (dBusConn != null) {
 288                         System.err.println("removeDevice is not yet implemented via dbus");
 289                         return 1;
 290                     }
 291                     if (!m.isRegistered()) {
 292                         System.err.println("User is not registered.");
 293                         return 1;
 294                     }
 295                     try {
 296                         int deviceId = ns.getInt("deviceId");
 297                         m.removeLinkedDevices(deviceId);
 298                     } catch (IOException e) {
 299                         e.printStackTrace();
 300                         return 3;
 301                     }
 302                     break;
 303                 case "send":
 304                     if (dBusConn == null && !m.isRegistered()) {
 305                         System.err.println("User is not registered.");
 306                         return 1;
 307                     }
 308
 309                     if (ns.getBoolean("endsession")) {
 310                         if (ns.getList("recipient") == null) {
 311                             System.err.println("No recipients given");
 312                             System.err.println("Aborting sending.");
 313                             return 1;
 314                         }
 315                         try {
 316                             ts.sendEndSessionMessage(ns.<String>getList("recipient"));
 317                         } catch (IOException e) {
 318                             handleIOException(e);
 319                             return 3;
 320                         } catch (EncapsulatedExceptions e) {
 321                             handleEncapsulatedExceptions(e);
 322                             return 3;
 323                         } catch (AssertionError e) {
 324                             handleAssertionError(e);
 325                             return 1;
 326                         } catch (DBusExecutionException e) {
 327                             handleDBusExecutionException(e);
 328                             return 1;
 329                         }
 330                     } else {
 331                         String messageText = ns.getString("message");
 332                         if (messageText == null) {
 333                             try {
 334                                 messageText = readAll(System.in);
 335                             } catch (IOException e) {
 336                                 System.err.println("Failed to read message from stdin: " + e.getMessage());
 337                                 System.err.println("Aborting sending.");
 338                                 return 1;
 339                             }
 340                         }
 341
 342                         try {
 343                             List<String> attachments = ns.getList("attachment");
 344                             if (attachments == null) {
 345                                 attachments = new ArrayList<>();
 346                             }
 347                             if (ns.getString("group") != null) {
 348                                 byte[] groupId = decodeGroupId(ns.getString("group"));
 349                                 ts.sendGroupMessage(messageText, attachments, groupId);
 350                             } else {
 351                                 ts.sendMessage(messageText, attachments, ns.<String>getList("recipient"));
 352                             }
 353                         } catch (IOException e) {
 354                             handleIOException(e);
 355                             return 3;
 356                         } catch (EncapsulatedExceptions e) {
 357                             handleEncapsulatedExceptions(e);
 358                             return 3;
 359                         } catch (AssertionError e) {
 360                             handleAssertionError(e);
 361                             return 1;
 362                         } catch (GroupNotFoundException e) {
 363                             handleGroupNotFoundException(e);
 364                             return 1;
 365                         } catch (NotAGroupMemberException e) {
 366                             handleNotAGroupMemberException(e);
 367                             return 1;
 368                         } catch (AttachmentInvalidException e) {
 369                             System.err.println("Failed to add attachment: " + e.getMessage());
 370                             System.err.println("Aborting sending.");
 371                             return 1;
 372                         } catch (DBusExecutionException e) {
 373                             handleDBusExecutionException(e);
 374                             return 1;
 375                         }
 376                     }
 377
 378                     break;
 379                 case "receive":
 380                     if (dBusConn != null) {
 381                         try {
 382                             dBusConn.addSigHandler(Signal.MessageReceived.class, new DBusSigHandler<Signal.MessageReceived>() {
 383                                 @Override
 384                                 public void handle(Signal.MessageReceived s) {
 385                                     System.out.print(String.format("Envelope from: %s\nTimestamp: %s\nBody: %s\n",
 386                                             s.getSender(), formatTimestamp(s.getTimestamp()), s.getMessage()));
 387                                     if (s.getGroupId().length > 0) {
 388                                         System.out.println("Group info:");
 389                                         System.out.println("  Id: " + Base64.encodeBytes(s.getGroupId()));
 390                                     }
 391                                     if (s.getAttachments().size() > 0) {
 392                                         System.out.println("Attachments: ");
 393                                         for (String attachment : s.getAttachments()) {
 394                                             System.out.println("-  Stored plaintext in: " + attachment);
 395                                         }
 396                                     }
 397                                     System.out.println();
 398                                 }
 399                             });
 400                             dBusConn.addSigHandler(Signal.ReceiptReceived.class, new DBusSigHandler<Signal.ReceiptReceived>() {
 401                                 @Override
 402                                 public void handle(Signal.ReceiptReceived s) {
 403                                     System.out.print(String.format("Receipt from: %s\nTimestamp: %s\n",
 404                                             s.getSender(), formatTimestamp(s.getTimestamp())));
 405                                 }
 406                             });
 407                         } catch (UnsatisfiedLinkError e) {
 408                             System.err.println("Missing native library dependency for dbus service: " + e.getMessage());
 409                             return 1;
 410                         } catch (DBusException e) {
 411                             e.printStackTrace();
 412                             return 1;
 413                         }
 414                         while (true) {
 415                             try {
 416                                 Thread.sleep(10000);
 417                             } catch (InterruptedException e) {
 418                                 return 0;
 419                             }
 420                         }
 421                     }
 422                     if (!m.isRegistered()) {
 423                         System.err.println("User is not registered.");
 424                         return 1;
 425                     }
 426                     double timeout = 5;
 427                     if (ns.getDouble("timeout") != null) {
 428                         timeout = ns.getDouble("timeout");
 429                     }
 430                     boolean returnOnTimeout = true;
 431                     if (timeout < 0) {
 432                         returnOnTimeout = false;
 433                         timeout = 3600;
 434                     }
 435                     boolean ignoreAttachments = ns.getBoolean("ignore_attachments");
 436                     try {
 437                         final Manager.ReceiveMessageHandler handler = ns.getBoolean("json") ? new JsonReceiveMessageHandler(m) : new ReceiveMessageHandler(m);
 438                         m.receiveMessages((long) (timeout * 1000), TimeUnit.MILLISECONDS, returnOnTimeout, ignoreAttachments, handler);
 439                     } catch (IOException e) {
 440                         System.err.println("Error while receiving messages: " + e.getMessage());
 441                         return 3;
 442                     } catch (AssertionError e) {
 443                         handleAssertionError(e);
 444                         return 1;
 445                     }
 446                     break;
 447                 case "quitGroup":
 448                     if (dBusConn != null) {
 449                         System.err.println("quitGroup is not yet implemented via dbus");
 450                         return 1;
 451                     }
 452                     if (!m.isRegistered()) {
 453                         System.err.println("User is not registered.");
 454                         return 1;
 455                     }
 456
 457                     try {
 458                         m.sendQuitGroupMessage(decodeGroupId(ns.getString("group")));
 459                     } catch (IOException e) {
 460                         handleIOException(e);
 461                         return 3;
 462                     } catch (EncapsulatedExceptions e) {
 463                         handleEncapsulatedExceptions(e);
 464                         return 3;
 465                     } catch (AssertionError e) {
 466                         handleAssertionError(e);
 467                         return 1;
 468                     } catch (GroupNotFoundException e) {
 469                         handleGroupNotFoundException(e);
 470                         return 1;
 471                     } catch (NotAGroupMemberException e) {
 472                         handleNotAGroupMemberException(e);
 473                         return 1;
 474                     }
 475
 476                     break;
 477                 case "updateGroup":
 478                     if (dBusConn == null && !m.isRegistered()) {
 479                         System.err.println("User is not registered.");
 480                         return 1;
 481                     }
 482
 483                     try {
 484                         byte[] groupId = null;
 485                         if (ns.getString("group") != null) {
 486                             groupId = decodeGroupId(ns.getString("group"));
 487                         }
 488                         if (groupId == null) {
 489                             groupId = new byte[0];
 490                         }
 491                         String groupName = ns.getString("name");
 492                         if (groupName == null) {
 493                             groupName = "";
 494                         }
 495                         List<String> groupMembers = ns.<String>getList("member");
 496                         if (groupMembers == null) {
 497                             groupMembers = new ArrayList<String>();
 498                         }
 499                         String groupAvatar = ns.getString("avatar");
 500                         if (groupAvatar == null) {
 501                             groupAvatar = "";
 502                         }
 503                         byte[] newGroupId = ts.updateGroup(groupId, groupName, groupMembers, groupAvatar);
 504                         if (groupId.length != newGroupId.length) {
 505                             System.out.println("Creating new group \"" + Base64.encodeBytes(newGroupId) + "\" …");
 506                         }
 507                     } catch (IOException e) {
 508                         handleIOException(e);
 509                         return 3;
 510                     } catch (AttachmentInvalidException e) {
 511                         System.err.println("Failed to add avatar attachment for group\": " + e.getMessage());
 512                         System.err.println("Aborting sending.");
 513                         return 1;
 514                     } catch (GroupNotFoundException e) {
 515                         handleGroupNotFoundException(e);
 516                         return 1;
 517                     } catch (NotAGroupMemberException e) {
 518                         handleNotAGroupMemberException(e);
 519                         return 1;
 520                     } catch (EncapsulatedExceptions e) {
 521                         handleEncapsulatedExceptions(e);
 522                         return 3;
 523                     }
 524
 525                     break;
 526                 case "listGroups":
 527                     if (dBusConn != null) {
 528                         System.err.println("listGroups is not yet implemented via dbus");
 529                         return 1;
 530                     }
 531                     if (!m.isRegistered()) {
 532                         System.err.println("User is not registered.");
 533                         return 1;
 534                     }
 535
 536                     List<GroupInfo> groups = m.getGroups();
 537                     boolean detailed = ns.getBoolean("detailed");
 538
 539                     for (GroupInfo group : groups) {
 540                         printGroup(group, detailed);
 541                     }
 542                     break;
 543                 case "listIdentities":
 544                     if (dBusConn != null) {
 545                         System.err.println("listIdentities is not yet implemented via dbus");
 546                         return 1;
 547                     }
 548                     if (!m.isRegistered()) {
 549                         System.err.println("User is not registered.");
 550                         return 1;
 551                     }
 552                     if (ns.get("number") == null) {
 553                         for (Map.Entry<String, List<JsonIdentityKeyStore.Identity>> keys : m.getIdentities().entrySet()) {
 554                             for (JsonIdentityKeyStore.Identity id : keys.getValue()) {
 555                                 printIdentityFingerprint(m, keys.getKey(), id);
 556                             }
 557                         }
 558                     } else {
 559                         String number = ns.getString("number");
 560                         for (JsonIdentityKeyStore.Identity id : m.getIdentities(number)) {
 561                             printIdentityFingerprint(m, number, id);
 562                         }
 563                     }
 564                     break;
 565                 case "trust":
 566                     if (dBusConn != null) {
 567                         System.err.println("trust is not yet implemented via dbus");
 568                         return 1;
 569                     }
 570                     if (!m.isRegistered()) {
 571                         System.err.println("User is not registered.");
 572                         return 1;
 573                     }
 574                     String number = ns.getString("number");
 575                     if (ns.getBoolean("trust_all_known_keys")) {
 576                         boolean res = m.trustIdentityAllKeys(number);
 577                         if (!res) {
 578                             System.err.println("Failed to set the trust for this number, make sure the number is correct.");
 579                             return 1;
 580                         }
 581                     } else {
 582                         String fingerprint = ns.getString("verified_fingerprint");
 583                         if (fingerprint != null) {
 584                             fingerprint = fingerprint.replaceAll(" ", "");
 585                             if (fingerprint.length() == 66) {
 586                                 byte[] fingerprintBytes;
 587                                 try {
 588                                     fingerprintBytes = Hex.toByteArray(fingerprint.toLowerCase(Locale.ROOT));
 589                                 } catch (Exception e) {
 590                                     System.err.println("Failed to parse the fingerprint, make sure the fingerprint is a correctly encoded hex string without additional characters.");
 591                                     return 1;
 592                                 }
 593                                 boolean res = m.trustIdentityVerified(number, fingerprintBytes);
 594                                 if (!res) {
 595                                     System.err.println("Failed to set the trust for the fingerprint of this number, make sure the number and the fingerprint are correct.");
 596                                     return 1;
 597                                 }
 598                             } else if (fingerprint.length() == 60) {
 599                                 boolean res = m.trustIdentityVerifiedSafetyNumber(number, fingerprint);
 600                                 if (!res) {
 601                                     System.err.println("Failed to set the trust for the safety number of this phone number, make sure the phone number and the safety number are correct.");
 602                                     return 1;
 603                                 }
 604                             } else {
 605                                 System.err.println("Fingerprint has invalid format, either specify the old hex fingerprint or the new safety number");
 606                                 return 1;
 607                             }
 608                         } else {
 609                             System.err.println("You need to specify the fingerprint you have verified with -v FINGERPRINT");
 610                             return 1;
 611                         }
 612                     }
 613                     break;
 614                 case "daemon":
 615                     if (dBusConn != null) {
 616                         System.err.println("Stop it.");
 617                         return 1;
 618                     }
 619                     if (!m.isRegistered()) {
 620                         System.err.println("User is not registered.");
 621                         return 1;
 622                     }
 623                     DBusConnection conn = null;
 624                     try {
 625                         try {
 626                             int busType;
 627                             if (ns.getBoolean("system")) {
 628                                 busType = DBusConnection.SYSTEM;
 629                             } else {
 630                                 busType = DBusConnection.SESSION;
 631                             }
 632                             conn = DBusConnection.getConnection(busType);
 633                             conn.exportObject(SIGNAL_OBJECTPATH, m);
 634                             conn.requestBusName(SIGNAL_BUSNAME);
 635                         } catch (UnsatisfiedLinkError e) {
 636                             System.err.println("Missing native library dependency for dbus service: " + e.getMessage());
 637                             return 1;
 638                         } catch (DBusException e) {
 639                             e.printStackTrace();
 640                             return 2;
 641                         }
 642                         ignoreAttachments = ns.getBoolean("ignore_attachments");
 643                         try {
 644                             m.receiveMessages(1, TimeUnit.HOURS, false, ignoreAttachments, new DbusReceiveMessageHandler(m, conn));
 645                         } catch (IOException e) {
 646                             System.err.println("Error while receiving messages: " + e.getMessage());
 647                             return 3;
 648                         } catch (AssertionError e) {
 649                             handleAssertionError(e);
 650                             return 1;
 651                         }
 652                     } finally {
 653                         if (conn != null) {
 654                             conn.disconnect();
 655                         }
 656                     }
 657
 658                     break;
 659             }
 660             return 0;
 661         } finally {
 662             if (dBusConn != null) {
 663                 dBusConn.disconnect();
 664             }
 665         }
 666     }
 667
 668     private static void printIdentityFingerprint(Manager m, String theirUsername, JsonIdentityKeyStore.Identity theirId) {
 669         String digits = formatSafetyNumber(m.computeSafetyNumber(theirUsername, theirId.getIdentityKey()));
 670         System.out.println(String.format("%s: %s Added: %s Fingerprint: %s Safety Number: %s", theirUsername,
 671                 theirId.getTrustLevel(), theirId.getDateAdded(), Hex.toStringCondensed(theirId.getFingerprint()), digits));
 672     }
 673
 674     private static void printGroup(GroupInfo group, boolean detailed) {
 675         if (detailed) {
 676             System.out.println(String.format("Id: %s Name: %s  Active: %s Members: %s",
 677                     Base64.encodeBytes(group.groupId), group.name, group.active, group.members));
 678         } else {
 679             System.out.println(String.format("Id: %s Name: %s  Active: %s", Base64.encodeBytes(group.groupId),
 680                     group.name, group.active));
 681         }
 682     }
 683
 684     private static String formatSafetyNumber(String digits) {
 685         final int partCount = 12;
 686         int partSize = digits.length() / partCount;
 687         StringBuilder f = new StringBuilder(digits.length() + partCount);
 688         for (int i = 0; i < partCount; i++) {
 689             f.append(digits.substring(i * partSize, (i * partSize) + partSize)).append(" ");
 690         }
 691         return f.toString();
 692     }
 693
 694     private static void handleGroupNotFoundException(GroupNotFoundException e) {
 695         System.err.println("Failed to send to group: " + e.getMessage());
 696         System.err.println("Aborting sending.");
 697     }
 698
 699     private static void handleNotAGroupMemberException(NotAGroupMemberException e) {
 700         System.err.println("Failed to send to group: " + e.getMessage());
 701         System.err.println("Update the group on another device to readd the user to this group.");
 702         System.err.println("Aborting sending.");
 703     }
 704
 705
 706     private static void handleDBusExecutionException(DBusExecutionException e) {
 707         System.err.println("Cannot connect to dbus: " + e.getMessage());
 708         System.err.println("Aborting.");
 709     }
 710
 711     private static byte[] decodeGroupId(String groupId) {
 712         try {
 713             return Base64.decode(groupId);
 714         } catch (IOException e) {
 715             System.err.println("Failed to decode groupId (must be base64) \"" + groupId + "\": " + e.getMessage());
 716             System.err.println("Aborting sending.");
 717             System.exit(1);
 718             return null;
 719         }
 720     }
 721
 722     private static Namespace parseArgs(String[] args) {
 723         ArgumentParser parser = ArgumentParsers.newArgumentParser("signal-cli")
 724                 .defaultHelp(true)
 725                 .description("Commandline interface for Signal.")
 726                 .version(Manager.PROJECT_NAME + " " + Manager.PROJECT_VERSION);
 727
 728         parser.addArgument("-v", "--version")
 729                 .help("Show package version.")
 730                 .action(Arguments.version());
 731         parser.addArgument("--config")
 732                 .help("Set the path, where to store the config (Default: $HOME/.config/signal).");
 733
 734         MutuallyExclusiveGroup mut = parser.addMutuallyExclusiveGroup();
 735         mut.addArgument("-u", "--username")
 736                 .help("Specify your phone number, that will be used for verification.");
 737         mut.addArgument("--dbus")
 738                 .help("Make request via user dbus.")
 739                 .action(Arguments.storeTrue());
 740         mut.addArgument("--dbus-system")
 741                 .help("Make request via system dbus.")
 742                 .action(Arguments.storeTrue());
 743
 744         Subparsers subparsers = parser.addSubparsers()
 745                 .title("subcommands")
 746                 .dest("command")
 747                 .description("valid subcommands")
 748                 .help("additional help");
 749
 750         Subparser parserLink = subparsers.addParser("link");
 751         parserLink.addArgument("-n", "--name")
 752                 .help("Specify a name to describe this new device.");
 753
 754         Subparser parserAddDevice = subparsers.addParser("addDevice");
 755         parserAddDevice.addArgument("--uri")
 756                 .required(true)
 757                 .help("Specify the uri contained in the QR code shown by the new device.");
 758
 759         Subparser parserDevices = subparsers.addParser("listDevices");
 760
 761         Subparser parserRemoveDevice = subparsers.addParser("removeDevice");
 762         parserRemoveDevice.addArgument("-d", "--deviceId")
 763                 .type(int.class)
 764                 .required(true)
 765                 .help("Specify the device you want to remove. Use listDevices to see the deviceIds.");
 766
 767         Subparser parserRegister = subparsers.addParser("register");
 768         parserRegister.addArgument("-v", "--voice")
 769                 .help("The verification should be done over voice, not sms.")
 770                 .action(Arguments.storeTrue());
 771
 772         Subparser parserUnregister = subparsers.addParser("unregister");
 773         parserUnregister.help("Unregister the current device from the signal server.");
 774
 775         Subparser parserUpdateAccount = subparsers.addParser("updateAccount");
 776         parserUpdateAccount.help("Update the account attributes on the signal server.");
 777
 778         Subparser parserVerify = subparsers.addParser("verify");
 779         parserVerify.addArgument("verificationCode")
 780                 .help("The verification code you received via sms or voice call.");
 781
 782         Subparser parserSend = subparsers.addParser("send");
 783         parserSend.addArgument("-g", "--group")
 784                 .help("Specify the recipient group ID.");
 785         parserSend.addArgument("recipient")
 786                 .help("Specify the recipients' phone number.")
 787                 .nargs("*");
 788         parserSend.addArgument("-m", "--message")
 789                 .help("Specify the message, if missing standard input is used.");
 790         parserSend.addArgument("-a", "--attachment")
 791                 .nargs("*")
 792                 .help("Add file as attachment");
 793         parserSend.addArgument("-e", "--endsession")
 794                 .help("Clear session state and send end session message.")
 795                 .action(Arguments.storeTrue());
 796
 797         Subparser parserLeaveGroup = subparsers.addParser("quitGroup");
 798         parserLeaveGroup.addArgument("-g", "--group")
 799                 .required(true)
 800                 .help("Specify the recipient group ID.");
 801
 802         Subparser parserUpdateGroup = subparsers.addParser("updateGroup");
 803         parserUpdateGroup.addArgument("-g", "--group")
 804                 .help("Specify the recipient group ID.");
 805         parserUpdateGroup.addArgument("-n", "--name")
 806                 .help("Specify the new group name.");
 807         parserUpdateGroup.addArgument("-a", "--avatar")
 808                 .help("Specify a new group avatar image file");
 809         parserUpdateGroup.addArgument("-m", "--member")
 810                 .nargs("*")
 811                 .help("Specify one or more members to add to the group");
 812
 813         Subparser parserListGroups = subparsers.addParser("listGroups");
 814         parserListGroups.addArgument("-d", "--detailed").action(Arguments.storeTrue())
 815                 .help("List members of each group");
 816         parserListGroups.help("List group name and ids");
 817
 818         Subparser parserListIdentities = subparsers.addParser("listIdentities");
 819         parserListIdentities.addArgument("-n", "--number")
 820                 .help("Only show identity keys for the given phone number.");
 821
 822         Subparser parserTrust = subparsers.addParser("trust");
 823         parserTrust.addArgument("number")
 824                 .help("Specify the phone number, for which to set the trust.")
 825                 .required(true);
 826         MutuallyExclusiveGroup mutTrust = parserTrust.addMutuallyExclusiveGroup();
 827         mutTrust.addArgument("-a", "--trust-all-known-keys")
 828                 .help("Trust all known keys of this user, only use this for testing.")
 829                 .action(Arguments.storeTrue());
 830         mutTrust.addArgument("-v", "--verified-fingerprint")
 831                 .help("Specify the fingerprint of the key, only use this option if you have verified the fingerprint.");
 832
 833         Subparser parserReceive = subparsers.addParser("receive");
 834         parserReceive.addArgument("-t", "--timeout")
 835                 .type(double.class)
 836                 .help("Number of seconds to wait for new messages (negative values disable timeout)");
 837         parserReceive.addArgument("--ignore-attachments")
 838                 .help("Don’t download attachments of received messages.")
 839                 .action(Arguments.storeTrue());
 840         parserReceive.addArgument("--json")
 841                 .help("Output received messages in json format, one json object per line.")
 842                 .action(Arguments.storeTrue());
 843
 844         Subparser parserDaemon = subparsers.addParser("daemon");
 845         parserDaemon.addArgument("--system")
 846                 .action(Arguments.storeTrue())
 847                 .help("Use DBus system bus instead of user bus.");
 848         parserDaemon.addArgument("--ignore-attachments")
 849                 .help("Don’t download attachments of received messages.")
 850                 .action(Arguments.storeTrue());
 851
 852         try {
 853             Namespace ns = parser.parseArgs(args);
 854             if ("link".equals(ns.getString("command"))) {
 855                 if (ns.getString("username") != null) {
 856                     parser.printUsage();
 857                     System.err.println("You cannot specify a username (phone number) when linking");
 858                     System.exit(2);
 859                 }
 860             } else if (!ns.getBoolean("dbus") && !ns.getBoolean("dbus_system")) {
 861                 if (ns.getString("username") == null) {
 862                     parser.printUsage();
 863                     System.err.println("You need to specify a username (phone number)");
 864                     System.exit(2);
 865                 }
 866                 if (!PhoneNumberFormatter.isValidNumber(ns.getString("username"))) {
 867                     System.err.println("Invalid username (phone number), make sure you include the country code.");
 868                     System.exit(2);
 869                 }
 870             }
 871             if (ns.getList("recipient") != null && !ns.getList("recipient").isEmpty() && ns.getString("group") != null) {
 872                 System.err.println("You cannot specify recipients by phone number and groups a the same time");
 873                 System.exit(2);
 874             }
 875             return ns;
 876         } catch (ArgumentParserException e) {
 877             parser.handleError(e);
 878             return null;
 879         }
 880     }
 881
 882     private static void handleAssertionError(AssertionError e) {
 883         System.err.println("Failed to send/receive message (Assertion): " + e.getMessage());
 884         e.printStackTrace();
 885         System.err.println("If you use an Oracle JRE please check if you have unlimited strength crypto enabled, see README");
 886     }
 887
 888     private static void handleEncapsulatedExceptions(EncapsulatedExceptions e) {
 889         System.err.println("Failed to send (some) messages:");
 890         for (NetworkFailureException n : e.getNetworkExceptions()) {
 891             System.err.println("Network failure for \"" + n.getE164number() + "\": " + n.getMessage());
 892         }
 893         for (UnregisteredUserException n : e.getUnregisteredUserExceptions()) {
 894             System.err.println("Unregistered user \"" + n.getE164Number() + "\": " + n.getMessage());
 895         }
 896         for (UntrustedIdentityException n : e.getUntrustedIdentityExceptions()) {
 897             System.err.println("Untrusted Identity for \"" + n.getE164Number() + "\": " + n.getMessage());
 898         }
 899     }
 900
 901     private static void handleIOException(IOException e) {
 902         System.err.println("Failed to send message: " + e.getMessage());
 903     }
 904
 905     private static String readAll(InputStream in) throws IOException {
 906         StringWriter output = new StringWriter();
 907         byte[] buffer = new byte[4096];
 908         long count = 0;
 909         int n;
 910         while (-1 != (n = System.in.read(buffer))) {
 911             output.write(new String(buffer, 0, n, Charset.defaultCharset()));
 912             count += n;
 913         }
 914         return output.toString();
 915     }
 916
 917     private static class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {
 918         final Manager m;
 919
 920         public ReceiveMessageHandler(Manager m) {
 921             this.m = m;
 922         }
 923
 924         @Override
 925         public void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, Throwable exception) {
 926             SignalServiceAddress source = envelope.getSourceAddress();
 927             ContactInfo sourceContact = m.getContact(source.getNumber());
 928             System.out.println(String.format("Envelope from: %s (device: %d)", (sourceContact == null ? "" : "“" + sourceContact.name + "” ") + source.getNumber(), envelope.getSourceDevice()));
 929             if (source.getRelay().isPresent()) {
 930                 System.out.println("Relayed by: " + source.getRelay().get());
 931             }
 932             System.out.println("Timestamp: " + formatTimestamp(envelope.getTimestamp()));
 933
 934             if (envelope.isReceipt()) {
 935                 System.out.println("Got receipt.");
 936             } else if (envelope.isSignalMessage() | envelope.isPreKeySignalMessage()) {
 937                 if (exception != null) {
 938                     if (exception instanceof org.whispersystems.libsignal.UntrustedIdentityException) {
 939                         org.whispersystems.libsignal.UntrustedIdentityException e = (org.whispersystems.libsignal.UntrustedIdentityException) exception;
 940                         System.out.println("The user’s key is untrusted, either the user has reinstalled Signal or a third party sent this message.");
 941                         System.out.println("Use 'signal-cli -u " + m.getUsername() + " listIdentities -n " + e.getName() + "', verify the key and run 'signal-cli -u " + m.getUsername() + " trust -v \"FINGER_PRINT\" " + e.getName() + "' to mark it as trusted");
 942                         System.out.println("If you don't care about security, use 'signal-cli -u " + m.getUsername() + " trust -a " + e.getName() + "' to trust it without verification");
 943                     } else {
 944                         System.out.println("Exception: " + exception.getMessage() + " (" + exception.getClass().getSimpleName() + ")");
 945                     }
 946                 }
 947                 if (content == null) {
 948                     System.out.println("Failed to decrypt message.");
 949                 } else {
 950                     if (content.getDataMessage().isPresent()) {
 951                         SignalServiceDataMessage message = content.getDataMessage().get();
 952                         handleSignalServiceDataMessage(message);
 953                     }
 954                     if (content.getSyncMessage().isPresent()) {
 955                         System.out.println("Received a sync message");
 956                         SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
 957
 958                         if (syncMessage.getContacts().isPresent()) {
 959                             final ContactsMessage contactsMessage = syncMessage.getContacts().get();
 960                             if (contactsMessage.isComplete()) {
 961                                 System.out.println("Received complete sync contacts");
 962                             } else {
 963                                 System.out.println("Received sync contacts");
 964                             }
 965                             printAttachment(contactsMessage.getContactsStream());
 966                         }
 967                         if (syncMessage.getGroups().isPresent()) {
 968                             System.out.println("Received sync groups");
 969                             printAttachment(syncMessage.getGroups().get());
 970                         }
 971                         if (syncMessage.getRead().isPresent()) {
 972                             System.out.println("Received sync read messages list");
 973                             for (ReadMessage rm : syncMessage.getRead().get()) {
 974                                 ContactInfo fromContact = m.getContact(rm.getSender());
 975                                 System.out.println("From: " + (fromContact == null ? "" : "“" + fromContact.name + "” ") + rm.getSender() + " Message timestamp: " + formatTimestamp(rm.getTimestamp()));
 976                             }
 977                         }
 978                         if (syncMessage.getRequest().isPresent()) {
 979                             System.out.println("Received sync request");
 980                             if (syncMessage.getRequest().get().isContactsRequest()) {
 981                                 System.out.println(" - contacts request");
 982                             }
 983                             if (syncMessage.getRequest().get().isGroupsRequest()) {
 984                                 System.out.println(" - groups request");
 985                             }
 986                         }
 987                         if (syncMessage.getSent().isPresent()) {
 988                             System.out.println("Received sync sent message");
 989                             final SentTranscriptMessage sentTranscriptMessage = syncMessage.getSent().get();
 990                             String to;
 991                             if (sentTranscriptMessage.getDestination().isPresent()) {
 992                                 String dest = sentTranscriptMessage.getDestination().get();
 993                                 ContactInfo destContact = m.getContact(dest);
 994                                 to = (destContact == null ? "" : "“" + destContact.name + "” ") + dest;
 995                             } else {
 996                                 to = "Unknown";
 997                             }
 998                             System.out.println("To: " + to + " , Message timestamp: " + formatTimestamp(sentTranscriptMessage.getTimestamp()));
 999                             if (sentTranscriptMessage.getExpirationStartTimestamp() > 0) {
1000                                 System.out.println("Expiration started at: " + formatTimestamp(sentTranscriptMessage.getExpirationStartTimestamp()));
1001                             }
1002                             SignalServiceDataMessage message = sentTranscriptMessage.getMessage();
1003                             handleSignalServiceDataMessage(message);
1004                         }
1005                         if (syncMessage.getBlockedList().isPresent()) {
1006                             System.out.println("Received sync message with block list");
1007                             System.out.println("Blocked numbers:");
1008                             final BlockedListMessage blockedList = syncMessage.getBlockedList().get();
1009                             for (String number : blockedList.getNumbers()) {
1010                                 System.out.println(" - " + number);
1011                             }
1012                         }
1013                         if (syncMessage.getVerified().isPresent()) {
1014                             System.out.println("Received sync message with verified identities:");
1015                             final VerifiedMessage verifiedMessage = syncMessage.getVerified().get();
1016                             System.out.println(" - " + verifiedMessage.getDestination() + ": " + verifiedMessage.getVerified());
1017                             String safetyNumber = formatSafetyNumber(m.computeSafetyNumber(verifiedMessage.getDestination(), verifiedMessage.getIdentityKey()));
1018                             System.out.println("   " + safetyNumber);
1019                         }
1020                     }
1021                 }
1022             } else {
1023                 System.out.println("Unknown message received.");
1024             }
1025             System.out.println();
1026         }
1027
1028         private void handleSignalServiceDataMessage(SignalServiceDataMessage message) {
1029             System.out.println("Message timestamp: " + formatTimestamp(message.getTimestamp()));
1030
1031             if (message.getBody().isPresent()) {
1032                 System.out.println("Body: " + message.getBody().get());
1033             }
1034             if (message.getGroupInfo().isPresent()) {
1035                 SignalServiceGroup groupInfo = message.getGroupInfo().get();
1036                 System.out.println("Group info:");
1037                 System.out.println("  Id: " + Base64.encodeBytes(groupInfo.getGroupId()));
1038                 if (groupInfo.getType() == SignalServiceGroup.Type.UPDATE && groupInfo.getName().isPresent()) {
1039                     System.out.println("  Name: " + groupInfo.getName().get());
1040                 } else {
1041                     GroupInfo group = m.getGroup(groupInfo.getGroupId());
1042                     if (group != null) {
1043                         System.out.println("  Name: " + group.name);
1044                     } else {
1045                         System.out.println("  Name: <Unknown group>");
1046                     }
1047                 }
1048                 System.out.println("  Type: " + groupInfo.getType());
1049                 if (groupInfo.getMembers().isPresent()) {
1050                     for (String member : groupInfo.getMembers().get()) {
1051                         System.out.println("  Member: " + member);
1052                     }
1053                 }
1054                 if (groupInfo.getAvatar().isPresent()) {
1055                     System.out.println("  Avatar:");
1056                     printAttachment(groupInfo.getAvatar().get());
1057                 }
1058             }
1059             if (message.isEndSession()) {
1060                 System.out.println("Is end session");
1061             }
1062             if (message.isExpirationUpdate()) {
1063                 System.out.println("Is Expiration update: " + message.isExpirationUpdate());
1064             }
1065             if (message.getExpiresInSeconds() > 0) {
1066                 System.out.println("Expires in: " + message.getExpiresInSeconds() + " seconds");
1067             }
1068
1069             if (message.getAttachments().isPresent()) {
1070                 System.out.println("Attachments: ");
1071                 for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1072                     printAttachment(attachment);
1073                 }
1074             }
1075         }
1076
1077         private void printAttachment(SignalServiceAttachment attachment) {
1078             System.out.println("- " + attachment.getContentType() + " (" + (attachment.isPointer() ? "Pointer" : "") + (attachment.isStream() ? "Stream" : "") + ")");
1079             if (attachment.isPointer()) {
1080                 final SignalServiceAttachmentPointer pointer = attachment.asPointer();
1081                 System.out.println("  Id: " + pointer.getId() + " Key length: " + pointer.getKey().length + (pointer.getRelay().isPresent() ? " Relay: " + pointer.getRelay().get() : ""));
1082                 System.out.println("  Filename: " + (pointer.getFileName().isPresent() ? pointer.getFileName().get() : "-"));
1083                 System.out.println("  Size: " + (pointer.getSize().isPresent() ? pointer.getSize().get() + " bytes" : "<unavailable>") + (pointer.getPreview().isPresent() ? " (Preview is available: " + pointer.getPreview().get().length + " bytes)" : ""));
1084                 System.out.println("  Voice note: " + (pointer.getVoiceNote() ? "yes" : "no"));
1085                 File file = m.getAttachmentFile(pointer.getId());
1086                 if (file.exists()) {
1087                     System.out.println("  Stored plaintext in: " + file);
1088                 }
1089             }
1090         }
1091     }
1092
1093     private static class DbusReceiveMessageHandler extends ReceiveMessageHandler {
1094         final DBusConnection conn;
1095
1096         public DbusReceiveMessageHandler(Manager m, DBusConnection conn) {
1097             super(m);
1098             this.conn = conn;
1099         }
1100
1101         @Override
1102         public void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, Throwable exception) {
1103             super.handleMessage(envelope, content, exception);
1104
1105             if (envelope.isReceipt()) {
1106                 try {
1107                     conn.sendSignal(new Signal.ReceiptReceived(
1108                             SIGNAL_OBJECTPATH,
1109                             envelope.getTimestamp(),
1110                             envelope.getSource()
1111                     ));
1112                 } catch (DBusException e) {
1113                     e.printStackTrace();
1114                 }
1115             } else if (content != null && content.getDataMessage().isPresent()) {
1116                 SignalServiceDataMessage message = content.getDataMessage().get();
1117
1118                 if (!message.isEndSession() &&
1119                         !(message.getGroupInfo().isPresent() &&
1120                                 message.getGroupInfo().get().getType() != SignalServiceGroup.Type.DELIVER)) {
1121                     List<String> attachments = new ArrayList<>();
1122                     if (message.getAttachments().isPresent()) {
1123                         for (SignalServiceAttachment attachment : message.getAttachments().get()) {
1124                             if (attachment.isPointer()) {
1125                                 attachments.add(m.getAttachmentFile(attachment.asPointer().getId()).getAbsolutePath());
1126                             }
1127                         }
1128                     }
1129
1130                     try {
1131                         conn.sendSignal(new Signal.MessageReceived(
1132                                 SIGNAL_OBJECTPATH,
1133                                 message.getTimestamp(),
1134                                 envelope.getSource(),
1135                                 message.getGroupInfo().isPresent() ? message.getGroupInfo().get().getGroupId() : new byte[0],
1136                                 message.getBody().isPresent() ? message.getBody().get() : "",
1137                                 attachments));
1138                     } catch (DBusException e) {
1139                         e.printStackTrace();
1140                     }
1141                 }
1142             }
1143         }
1144     }
1145
1146     private static class JsonReceiveMessageHandler implements Manager.ReceiveMessageHandler {
1147         final Manager m;
1148         final ObjectMapper jsonProcessor;
1149
1150         public JsonReceiveMessageHandler(Manager m) {
1151             this.m = m;
1152             this.jsonProcessor = new ObjectMapper();
1153             jsonProcessor.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); // disable autodetect
1154             jsonProcessor.enable(SerializationFeature.WRITE_NULL_MAP_VALUES);
1155             jsonProcessor.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
1156             jsonProcessor.disable(JsonGenerator.Feature.AUTO_CLOSE_TARGET);
1157         }
1158
1159         @Override
1160         public void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, Throwable exception) {
1161             ObjectNode result = jsonProcessor.createObjectNode();
1162             if (exception != null) {
1163                 result.putPOJO("error", new JsonError(exception));
1164             }
1165             if (envelope != null) {
1166                 result.putPOJO("envelope", new JsonMessageEnvelope(envelope, content));
1167             }
1168             try {
1169                 jsonProcessor.writeValue(System.out, result);
1170                 System.out.println();
1171             } catch (IOException e) {
1172                 e.printStackTrace();
1173             }
1174         }
1175     }
1176
1177     private static String formatTimestamp(long timestamp) {
1178         Date date = new Date(timestamp);
1179         final DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"); // Quoted "Z" to indicate UTC, no timezone offset
1180         df.setTimeZone(tzUTC);
1181         return timestamp + " (" + df.format(date) + ")";
1182     }
1183 }