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 net.sourceforge.argparse4j.ArgumentParsers;
  20 import net.sourceforge.argparse4j.impl.Arguments;
  21 import net.sourceforge.argparse4j.inf.*;
  22 import org.apache.commons.io.IOUtils;
  23 import org.apache.http.util.TextUtils;
  24 import org.asamk.Signal;
  25 import org.freedesktop.dbus.DBusConnection;
  26 import org.freedesktop.dbus.DBusSigHandler;
  27 import org.freedesktop.dbus.exceptions.DBusException;
  28 import org.freedesktop.dbus.exceptions.DBusExecutionException;
  29 import org.whispersystems.libsignal.InvalidKeyException;
  30 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  31 import org.whispersystems.signalservice.api.messages.*;
  32 import org.whispersystems.signalservice.api.messages.multidevice.ReadMessage;
  33 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  34 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  35 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  36 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  37 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  38 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  39 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
  40
  41 import java.io.File;
  42 import java.io.IOException;
  43 import java.net.URI;
  44 import java.net.URISyntaxException;
  45 import java.security.Security;
  46 import java.util.ArrayList;
  47 import java.util.List;
  48 import java.util.concurrent.TimeoutException;
  49
  50 public class Main {
  51
  52     public static final String SIGNAL_BUSNAME = "org.asamk.Signal";
  53     public static final String SIGNAL_OBJECTPATH = "/org/asamk/Signal";
  54
  55     public static void main(String[] args) {
  56         // Workaround for BKS truststore
  57         Security.insertProviderAt(new org.bouncycastle.jce.provider.BouncyCastleProvider(), 1);
  58
  59         Namespace ns = parseArgs(args);
  60         if (ns == null) {
  61             System.exit(1);
  62         }
  63
  64         final String username = ns.getString("username");
  65         Manager m;
  66         Signal ts;
  67         DBusConnection dBusConn = null;
  68         try {
  69             if (ns.getBoolean("dbus") || ns.getBoolean("dbus_system")) {
  70                 try {
  71                     m = null;
  72                     int busType;
  73                     if (ns.getBoolean("dbus_system")) {
  74                         busType = DBusConnection.SYSTEM;
  75                     } else {
  76                         busType = DBusConnection.SESSION;
  77                     }
  78                     dBusConn = DBusConnection.getConnection(busType);
  79                     ts = (Signal) dBusConn.getRemoteObject(
  80                             SIGNAL_BUSNAME, SIGNAL_OBJECTPATH,
  81                             Signal.class);
  82                 } catch (DBusException e) {
  83                     e.printStackTrace();
  84                     if (dBusConn != null) {
  85                         dBusConn.disconnect();
  86                     }
  87                     System.exit(3);
  88                     return;
  89                 }
  90             } else {
  91                 String settingsPath = ns.getString("config");
  92                 if (TextUtils.isEmpty(settingsPath)) {
  93                     settingsPath = System.getProperty("user.home") + "/.config/signal";
  94                     if (!new File(settingsPath).exists()) {
  95                         String legacySettingsPath = System.getProperty("user.home") + "/.config/textsecure";
  96                         if (new File(legacySettingsPath).exists()) {
  97                             settingsPath = legacySettingsPath;
  98                         }
  99                     }
 100                 }
 101
 102                 m = new Manager(username, settingsPath);
 103                 ts = m;
 104                 if (m.userExists()) {
 105                     try {
 106                         m.load();
 107                     } catch (Exception e) {
 108                         System.err.println("Error loading state file \"" + m.getFileName() + "\": " + e.getMessage());
 109                         System.exit(2);
 110                         return;
 111                     }
 112                 }
 113             }
 114
 115             switch (ns.getString("command")) {
 116                 case "register":
 117                     if (dBusConn != null) {
 118                         System.err.println("register is not yet implemented via dbus");
 119                         System.exit(1);
 120                     }
 121                     if (!m.userHasKeys()) {
 122                         m.createNewIdentity();
 123                     }
 124                     try {
 125                         m.register(ns.getBoolean("voice"));
 126                     } catch (IOException e) {
 127                         System.err.println("Request verify error: " + e.getMessage());
 128                         System.exit(3);
 129                     }
 130                     break;
 131                 case "verify":
 132                     if (dBusConn != null) {
 133                         System.err.println("verify is not yet implemented via dbus");
 134                         System.exit(1);
 135                     }
 136                     if (!m.userHasKeys()) {
 137                         System.err.println("User has no keys, first call register.");
 138                         System.exit(1);
 139                     }
 140                     if (m.isRegistered()) {
 141                         System.err.println("User registration is already verified");
 142                         System.exit(1);
 143                     }
 144                     try {
 145                         m.verifyAccount(ns.getString("verificationCode"));
 146                     } catch (IOException e) {
 147                         System.err.println("Verify error: " + e.getMessage());
 148                         System.exit(3);
 149                     }
 150                     break;
 151                 case "link":
 152                     if (dBusConn != null) {
 153                         System.err.println("link is not yet implemented via dbus");
 154                         System.exit(1);
 155                     }
 156
 157                     // When linking, username is null and we always have to create keys
 158                     m.createNewIdentity();
 159
 160                     String deviceName = ns.getString("name");
 161                     if (deviceName == null) {
 162                         deviceName = "cli";
 163                     }
 164                     try {
 165                         System.out.println(m.getDeviceLinkUri());
 166                         m.finishDeviceLink(deviceName);
 167                         System.out.println("Associated with: " + m.getUsername());
 168                     } catch (TimeoutException e) {
 169                         System.err.println("Link request timed out, please try again.");
 170                         System.exit(3);
 171                     } catch (IOException e) {
 172                         System.err.println("Link request error: " + e.getMessage());
 173                         System.exit(3);
 174                     } catch (InvalidKeyException e) {
 175                         e.printStackTrace();
 176                         System.exit(3);
 177                     } catch (UserAlreadyExists e) {
 178                         System.err.println("The user " + e.getUsername() + " already exists\nDelete \"" + e.getFileName() + "\" before trying again.");
 179                         System.exit(3);
 180                     }
 181                     break;
 182                 case "addDevice":
 183                     if (dBusConn != null) {
 184                         System.err.println("link is not yet implemented via dbus");
 185                         System.exit(1);
 186                     }
 187                     if (!m.isRegistered()) {
 188                         System.err.println("User is not registered.");
 189                         System.exit(1);
 190                     }
 191                     try {
 192                         m.addDeviceLink(new URI(ns.getString("uri")));
 193                     } catch (IOException e) {
 194                         e.printStackTrace();
 195                         System.exit(3);
 196                     } catch (InvalidKeyException e) {
 197                         e.printStackTrace();
 198                         System.exit(2);
 199                     } catch (URISyntaxException e) {
 200                         e.printStackTrace();
 201                         System.exit(2);
 202                     }
 203                     break;
 204                 case "send":
 205                     if (dBusConn == null && !m.isRegistered()) {
 206                         System.err.println("User is not registered.");
 207                         System.exit(1);
 208                     }
 209
 210                     if (ns.getBoolean("endsession")) {
 211                         if (ns.getList("recipient") == null) {
 212                             System.err.println("No recipients given");
 213                             System.err.println("Aborting sending.");
 214                             System.exit(1);
 215                         }
 216                         try {
 217                             ts.sendEndSessionMessage(ns.<String>getList("recipient"));
 218                         } catch (IOException e) {
 219                             handleIOException(e);
 220                         } catch (EncapsulatedExceptions e) {
 221                             handleEncapsulatedExceptions(e);
 222                         } catch (AssertionError e) {
 223                             handleAssertionError(e);
 224                         } catch (DBusExecutionException e) {
 225                             handleDBusExecutionException(e);
 226                         } catch (UntrustedIdentityException e) {
 227                             e.printStackTrace();
 228                         }
 229                     } else {
 230                         String messageText = ns.getString("message");
 231                         if (messageText == null) {
 232                             try {
 233                                 messageText = IOUtils.toString(System.in);
 234                             } catch (IOException e) {
 235                                 System.err.println("Failed to read message from stdin: " + e.getMessage());
 236                                 System.err.println("Aborting sending.");
 237                                 System.exit(1);
 238                             }
 239                         }
 240
 241                         try {
 242                             List<String> attachments = ns.getList("attachment");
 243                             if (attachments == null) {
 244                                 attachments = new ArrayList<>();
 245                             }
 246                             if (ns.getString("group") != null) {
 247                                 byte[] groupId = decodeGroupId(ns.getString("group"));
 248                                 ts.sendGroupMessage(messageText, attachments, groupId);
 249                             } else {
 250                                 ts.sendMessage(messageText, attachments, ns.<String>getList("recipient"));
 251                             }
 252                         } catch (IOException e) {
 253                             handleIOException(e);
 254                         } catch (EncapsulatedExceptions e) {
 255                             handleEncapsulatedExceptions(e);
 256                         } catch (AssertionError e) {
 257                             handleAssertionError(e);
 258                         } catch (GroupNotFoundException e) {
 259                             handleGroupNotFoundException(e);
 260                         } catch (AttachmentInvalidException e) {
 261                             System.err.println("Failed to add attachment: " + e.getMessage());
 262                             System.err.println("Aborting sending.");
 263                             System.exit(1);
 264                         } catch (DBusExecutionException e) {
 265                             handleDBusExecutionException(e);
 266                         } catch (UntrustedIdentityException e) {
 267                             e.printStackTrace();
 268                         }
 269                     }
 270
 271                     break;
 272                 case "receive":
 273                     if (dBusConn != null) {
 274                         try {
 275                             dBusConn.addSigHandler(Signal.MessageReceived.class, new DBusSigHandler<Signal.MessageReceived>() {
 276                                 @Override
 277                                 public void handle(Signal.MessageReceived s) {
 278                                     System.out.print(String.format("Envelope from: %s\nTimestamp: %d\nBody: %s\n",
 279                                             s.getSender(), s.getTimestamp(), s.getMessage()));
 280                                     if (s.getGroupId().length > 0) {
 281                                         System.out.println("Group info:");
 282                                         System.out.println("  Id: " + Base64.encodeBytes(s.getGroupId()));
 283                                     }
 284                                     if (s.getAttachments().size() > 0) {
 285                                         System.out.println("Attachments: ");
 286                                         for (String attachment : s.getAttachments()) {
 287                                             System.out.println("-  Stored plaintext in: " + attachment);
 288                                         }
 289                                     }
 290                                     System.out.println();
 291                                 }
 292                             });
 293                         } catch (DBusException e) {
 294                             e.printStackTrace();
 295                         }
 296                         while (true) {
 297                             try {
 298                                 Thread.sleep(10000);
 299                             } catch (InterruptedException e) {
 300                                 System.exit(0);
 301                             }
 302                         }
 303                     }
 304                     if (!m.isRegistered()) {
 305                         System.err.println("User is not registered.");
 306                         System.exit(1);
 307                     }
 308                     int timeout = 5;
 309                     if (ns.getInt("timeout") != null) {
 310                         timeout = ns.getInt("timeout");
 311                     }
 312                     boolean returnOnTimeout = true;
 313                     if (timeout < 0) {
 314                         returnOnTimeout = false;
 315                         timeout = 3600;
 316                     }
 317                     try {
 318                         m.receiveMessages(timeout, returnOnTimeout, new ReceiveMessageHandler(m));
 319                     } catch (IOException e) {
 320                         System.err.println("Error while receiving messages: " + e.getMessage());
 321                         System.exit(3);
 322                     } catch (AssertionError e) {
 323                         handleAssertionError(e);
 324                     }
 325                     break;
 326                 case "quitGroup":
 327                     if (dBusConn != null) {
 328                         System.err.println("quitGroup is not yet implemented via dbus");
 329                         System.exit(1);
 330                     }
 331                     if (!m.isRegistered()) {
 332                         System.err.println("User is not registered.");
 333                         System.exit(1);
 334                     }
 335
 336                     try {
 337                         m.sendQuitGroupMessage(decodeGroupId(ns.getString("group")));
 338                     } catch (IOException e) {
 339                         handleIOException(e);
 340                     } catch (EncapsulatedExceptions e) {
 341                         handleEncapsulatedExceptions(e);
 342                     } catch (AssertionError e) {
 343                         handleAssertionError(e);
 344                     } catch (GroupNotFoundException e) {
 345                         handleGroupNotFoundException(e);
 346                     } catch (UntrustedIdentityException e) {
 347                         e.printStackTrace();
 348                     }
 349
 350                     break;
 351                 case "updateGroup":
 352                     if (dBusConn != null) {
 353                         System.err.println("updateGroup is not yet implemented via dbus");
 354                         System.exit(1);
 355                     }
 356                     if (!m.isRegistered()) {
 357                         System.err.println("User is not registered.");
 358                         System.exit(1);
 359                     }
 360
 361                     try {
 362                         byte[] groupId = null;
 363                         if (ns.getString("group") != null) {
 364                             groupId = decodeGroupId(ns.getString("group"));
 365                         }
 366                         byte[] newGroupId = m.sendUpdateGroupMessage(groupId, ns.getString("name"), ns.<String>getList("member"), ns.getString("avatar"));
 367                         if (groupId == null) {
 368                             System.out.println("Creating new group \"" + Base64.encodeBytes(newGroupId) + "\" …");
 369                         }
 370                     } catch (IOException e) {
 371                         handleIOException(e);
 372                     } catch (AttachmentInvalidException e) {
 373                         System.err.println("Failed to add avatar attachment for group\": " + e.getMessage());
 374                         System.err.println("Aborting sending.");
 375                         System.exit(1);
 376                     } catch (GroupNotFoundException e) {
 377                         handleGroupNotFoundException(e);
 378                     } catch (EncapsulatedExceptions e) {
 379                         handleEncapsulatedExceptions(e);
 380                     } catch (UntrustedIdentityException e) {
 381                         e.printStackTrace();
 382                     }
 383
 384                     break;
 385                 case "daemon":
 386                     if (dBusConn != null) {
 387                         System.err.println("Stop it.");
 388                         System.exit(1);
 389                     }
 390                     if (!m.isRegistered()) {
 391                         System.err.println("User is not registered.");
 392                         System.exit(1);
 393                     }
 394                     DBusConnection conn = null;
 395                     try {
 396                         try {
 397                             int busType;
 398                             if (ns.getBoolean("system")) {
 399                                 busType = DBusConnection.SYSTEM;
 400                             } else {
 401                                 busType = DBusConnection.SESSION;
 402                             }
 403                             conn = DBusConnection.getConnection(busType);
 404                             conn.exportObject(SIGNAL_OBJECTPATH, m);
 405                             conn.requestBusName(SIGNAL_BUSNAME);
 406                         } catch (DBusException e) {
 407                             e.printStackTrace();
 408                             System.exit(3);
 409                         }
 410                         try {
 411                             m.receiveMessages(3600, false, new DbusReceiveMessageHandler(m, conn));
 412                         } catch (IOException e) {
 413                             System.err.println("Error while receiving messages: " + e.getMessage());
 414                             System.exit(3);
 415                         } catch (AssertionError e) {
 416                             handleAssertionError(e);
 417                         }
 418                     } finally {
 419                         if (conn != null) {
 420                             conn.disconnect();
 421                         }
 422                     }
 423
 424                     break;
 425             }
 426             System.exit(0);
 427         } finally {
 428             if (dBusConn != null) {
 429                 dBusConn.disconnect();
 430             }
 431         }
 432     }
 433
 434     private static void handleGroupNotFoundException(GroupNotFoundException e) {
 435         System.err.println("Failed to send to group: " + e.getMessage());
 436         System.err.println("Aborting sending.");
 437         System.exit(1);
 438     }
 439
 440     private static void handleDBusExecutionException(DBusExecutionException e) {
 441         System.err.println("Cannot connect to dbus: " + e.getMessage());
 442         System.err.println("Aborting.");
 443         System.exit(1);
 444     }
 445
 446     private static byte[] decodeGroupId(String groupId) {
 447         try {
 448             return Base64.decode(groupId);
 449         } catch (IOException e) {
 450             System.err.println("Failed to decode groupId (must be base64) \"" + groupId + "\": " + e.getMessage());
 451             System.err.println("Aborting sending.");
 452             System.exit(1);
 453             return null;
 454         }
 455     }
 456
 457     private static Namespace parseArgs(String[] args) {
 458         ArgumentParser parser = ArgumentParsers.newArgumentParser("signal-cli")
 459                 .defaultHelp(true)
 460                 .description("Commandline interface for Signal.")
 461                 .version(Manager.PROJECT_NAME + " " + Manager.PROJECT_VERSION);
 462
 463         parser.addArgument("-v", "--version")
 464                 .help("Show package version.")
 465                 .action(Arguments.version());
 466         parser.addArgument("--config")
 467                 .help("Set the path, where to store the config (Default: $HOME/.config/signal-cli).");
 468
 469         MutuallyExclusiveGroup mut = parser.addMutuallyExclusiveGroup();
 470         mut.addArgument("-u", "--username")
 471                 .help("Specify your phone number, that will be used for verification.");
 472         mut.addArgument("--dbus")
 473                 .help("Make request via user dbus.")
 474                 .action(Arguments.storeTrue());
 475         mut.addArgument("--dbus-system")
 476                 .help("Make request via system dbus.")
 477                 .action(Arguments.storeTrue());
 478
 479         Subparsers subparsers = parser.addSubparsers()
 480                 .title("subcommands")
 481                 .dest("command")
 482                 .description("valid subcommands")
 483                 .help("additional help");
 484
 485         Subparser parserLink = subparsers.addParser("link");
 486         parserLink.addArgument("-n", "--name")
 487                 .help("Specify a name to describe this new device.");
 488
 489         Subparser parserAddDevice = subparsers.addParser("addDevice");
 490         parserAddDevice.addArgument("--uri")
 491                 .required(true)
 492                 .help("Specify the uri contained in the QR code shown by the new device.");
 493
 494         Subparser parserRegister = subparsers.addParser("register");
 495         parserRegister.addArgument("-v", "--voice")
 496                 .help("The verification should be done over voice, not sms.")
 497                 .action(Arguments.storeTrue());
 498
 499         Subparser parserVerify = subparsers.addParser("verify");
 500         parserVerify.addArgument("verificationCode")
 501                 .help("The verification code you received via sms or voice call.");
 502
 503         Subparser parserSend = subparsers.addParser("send");
 504         parserSend.addArgument("-g", "--group")
 505                 .help("Specify the recipient group ID.");
 506         parserSend.addArgument("recipient")
 507                 .help("Specify the recipients' phone number.")
 508                 .nargs("*");
 509         parserSend.addArgument("-m", "--message")
 510                 .help("Specify the message, if missing standard input is used.");
 511         parserSend.addArgument("-a", "--attachment")
 512                 .nargs("*")
 513                 .help("Add file as attachment");
 514         parserSend.addArgument("-e", "--endsession")
 515                 .help("Clear session state and send end session message.")
 516                 .action(Arguments.storeTrue());
 517
 518         Subparser parserLeaveGroup = subparsers.addParser("quitGroup");
 519         parserLeaveGroup.addArgument("-g", "--group")
 520                 .required(true)
 521                 .help("Specify the recipient group ID.");
 522
 523         Subparser parserUpdateGroup = subparsers.addParser("updateGroup");
 524         parserUpdateGroup.addArgument("-g", "--group")
 525                 .help("Specify the recipient group ID.");
 526         parserUpdateGroup.addArgument("-n", "--name")
 527                 .help("Specify the new group name.");
 528         parserUpdateGroup.addArgument("-a", "--avatar")
 529                 .help("Specify a new group avatar image file");
 530         parserUpdateGroup.addArgument("-m", "--member")
 531                 .nargs("*")
 532                 .help("Specify one or more members to add to the group");
 533
 534         Subparser parserReceive = subparsers.addParser("receive");
 535         parserReceive.addArgument("-t", "--timeout")
 536                 .type(int.class)
 537                 .help("Number of seconds to wait for new messages (negative values disable timeout)");
 538
 539         Subparser parserDaemon = subparsers.addParser("daemon");
 540         parserDaemon.addArgument("--system")
 541                 .action(Arguments.storeTrue())
 542                 .help("Use DBus system bus instead of user bus.");
 543
 544         try {
 545             Namespace ns = parser.parseArgs(args);
 546             if ("link".equals(ns.getString("command"))) {
 547                 if (ns.getString("username") != null) {
 548                     parser.printUsage();
 549                     System.err.println("You cannot specify a username (phone number) when linking");
 550                     System.exit(2);
 551                 }
 552             } else if (!ns.getBoolean("dbus") && !ns.getBoolean("dbus_system")) {
 553                 if (ns.getString("username") == null) {
 554                     parser.printUsage();
 555                     System.err.println("You need to specify a username (phone number)");
 556                     System.exit(2);
 557                 }
 558                 if (!PhoneNumberFormatter.isValidNumber(ns.getString("username"))) {
 559                     System.err.println("Invalid username (phone number), make sure you include the country code.");
 560                     System.exit(2);
 561                 }
 562             }
 563             if (ns.getList("recipient") != null && !ns.getList("recipient").isEmpty() && ns.getString("group") != null) {
 564                 System.err.println("You cannot specify recipients by phone number and groups a the same time");
 565                 System.exit(2);
 566             }
 567             return ns;
 568         } catch (ArgumentParserException e) {
 569             parser.handleError(e);
 570             return null;
 571         }
 572     }
 573
 574     private static void handleAssertionError(AssertionError e) {
 575         System.err.println("Failed to send/receive message (Assertion): " + e.getMessage());
 576         e.printStackTrace();
 577         System.err.println("If you use an Oracle JRE please check if you have unlimited strength crypto enabled, see README");
 578         System.exit(1);
 579     }
 580
 581     private static void handleEncapsulatedExceptions(EncapsulatedExceptions e) {
 582         System.err.println("Failed to send (some) messages:");
 583         for (NetworkFailureException n : e.getNetworkExceptions()) {
 584             System.err.println("Network failure for \"" + n.getE164number() + "\": " + n.getMessage());
 585         }
 586         for (UnregisteredUserException n : e.getUnregisteredUserExceptions()) {
 587             System.err.println("Unregistered user \"" + n.getE164Number() + "\": " + n.getMessage());
 588         }
 589         for (UntrustedIdentityException n : e.getUntrustedIdentityExceptions()) {
 590             System.err.println("Untrusted Identity for \"" + n.getE164Number() + "\": " + n.getMessage());
 591         }
 592     }
 593
 594     private static void handleIOException(IOException e) {
 595         System.err.println("Failed to send message: " + e.getMessage());
 596     }
 597
 598     private static class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {
 599         final Manager m;
 600
 601         public ReceiveMessageHandler(Manager m) {
 602             this.m = m;
 603         }
 604
 605         @Override
 606         public void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, GroupInfo group) {
 607             SignalServiceAddress source = envelope.getSourceAddress();
 608             System.out.println(String.format("Envelope from: %s (device: %d)", source.getNumber(), envelope.getSourceDevice()));
 609             if (source.getRelay().isPresent()) {
 610                 System.out.println("Relayed by: " + source.getRelay().get());
 611             }
 612             System.out.println("Timestamp: " + envelope.getTimestamp());
 613
 614             if (envelope.isReceipt()) {
 615                 System.out.println("Got receipt.");
 616             } else if (envelope.isSignalMessage() | envelope.isPreKeySignalMessage()) {
 617                 if (content == null) {
 618                     System.out.println("Failed to decrypt message.");
 619                 } else {
 620                     if (content.getDataMessage().isPresent()) {
 621                         SignalServiceDataMessage message = content.getDataMessage().get();
 622                         handleSignalServiceDataMessage(message, group);
 623                     }
 624                     if (content.getSyncMessage().isPresent()) {
 625                         SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
 626
 627                         if (syncMessage.getContacts().isPresent()) {
 628                             System.out.println("Received sync contacts");
 629                             printAttachment(syncMessage.getContacts().get());
 630                         }
 631                         if (syncMessage.getGroups().isPresent()) {
 632                             System.out.println("Received sync groups");
 633                             printAttachment(syncMessage.getGroups().get());
 634                         }
 635                         if (syncMessage.getRead().isPresent()) {
 636                             System.out.println("Received sync read messages list");
 637                             for (ReadMessage rm : syncMessage.getRead().get()) {
 638                                 System.out.println("From: " + rm.getSender() + " Message timestamp: " + rm.getTimestamp());
 639                             }
 640                         }
 641                         if (syncMessage.getRequest().isPresent()) {
 642                             System.out.println("Received sync request");
 643                             if (syncMessage.getRequest().get().isContactsRequest()) {
 644                                 System.out.println(" - contacts request");
 645                             }
 646                             if (syncMessage.getRequest().get().isGroupsRequest()) {
 647                                 System.out.println(" - groups request");
 648                             }
 649                         }
 650                         if (syncMessage.getSent().isPresent()) {
 651                             System.out.println("Received sync sent message");
 652                             final SentTranscriptMessage sentTranscriptMessage = syncMessage.getSent().get();
 653                             System.out.println("To: " + (sentTranscriptMessage.getDestination().isPresent() ? sentTranscriptMessage.getDestination().get() : "Unknown") + " , Message timestamp: " + sentTranscriptMessage.getTimestamp());
 654                             SignalServiceDataMessage message = sentTranscriptMessage.getMessage();
 655                             handleSignalServiceDataMessage(message, null);
 656                         }
 657                     }
 658                 }
 659             } else {
 660                 System.out.println("Unknown message received.");
 661             }
 662             System.out.println();
 663         }
 664
 665         // TODO remove group parameter
 666         private void handleSignalServiceDataMessage(SignalServiceDataMessage message, GroupInfo group) {
 667             System.out.println("Message timestamp: " + message.getTimestamp());
 668
 669             if (message.getBody().isPresent()) {
 670                 System.out.println("Body: " + message.getBody().get());
 671             }
 672             if (message.getGroupInfo().isPresent()) {
 673                 SignalServiceGroup groupInfo = message.getGroupInfo().get();
 674                 System.out.println("Group info:");
 675                 System.out.println("  Id: " + Base64.encodeBytes(groupInfo.getGroupId()));
 676                 if (groupInfo.getName().isPresent()) {
 677                     System.out.println("  Name: " + groupInfo.getName().get());
 678                 } else if (group != null) {
 679                     System.out.println("  Name: " + group.name);
 680                 } else {
 681                     System.out.println("  Name: <Unknown group>");
 682                 }
 683                 System.out.println("  Type: " + groupInfo.getType());
 684                 if (groupInfo.getMembers().isPresent()) {
 685                     for (String member : groupInfo.getMembers().get()) {
 686                         System.out.println("  Member: " + member);
 687                     }
 688                 }
 689                 if (groupInfo.getAvatar().isPresent()) {
 690                     System.out.println("  Avatar:");
 691                     printAttachment(groupInfo.getAvatar().get());
 692                 }
 693             }
 694             if (message.isEndSession()) {
 695                 System.out.println("Is end session");
 696             }
 697
 698             if (message.getAttachments().isPresent()) {
 699                 System.out.println("Attachments: ");
 700                 for (SignalServiceAttachment attachment : message.getAttachments().get()) {
 701                     printAttachment(attachment);
 702                 }
 703             }
 704         }
 705
 706         private void printAttachment(SignalServiceAttachment attachment) {
 707             System.out.println("- " + attachment.getContentType() + " (" + (attachment.isPointer() ? "Pointer" : "") + (attachment.isStream() ? "Stream" : "") + ")");
 708             if (attachment.isPointer()) {
 709                 final SignalServiceAttachmentPointer pointer = attachment.asPointer();
 710                 System.out.println("  Id: " + pointer.getId() + " Key length: " + pointer.getKey().length + (pointer.getRelay().isPresent() ? " Relay: " + pointer.getRelay().get() : ""));
 711                 System.out.println("  Size: " + (pointer.getSize().isPresent() ? pointer.getSize().get() + " bytes" : "<unavailable>") + (pointer.getPreview().isPresent() ? " (Preview is available: " + pointer.getPreview().get().length + " bytes)" : ""));
 712                 File file = m.getAttachmentFile(pointer.getId());
 713                 if (file.exists()) {
 714                     System.out.println("  Stored plaintext in: " + file);
 715                 }
 716             }
 717         }
 718     }
 719
 720     private static class DbusReceiveMessageHandler extends ReceiveMessageHandler {
 721         final DBusConnection conn;
 722
 723         public DbusReceiveMessageHandler(Manager m, DBusConnection conn) {
 724             super(m);
 725             this.conn = conn;
 726         }
 727
 728         @Override
 729         public void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, GroupInfo group) {
 730             super.handleMessage(envelope, content, group);
 731
 732             if (!envelope.isReceipt() && content != null && content.getDataMessage().isPresent()) {
 733                 SignalServiceDataMessage message = content.getDataMessage().get();
 734
 735                 if (!message.isEndSession() &&
 736                         !(message.getGroupInfo().isPresent() &&
 737                                 message.getGroupInfo().get().getType() != SignalServiceGroup.Type.DELIVER)) {
 738                     List<String> attachments = new ArrayList<>();
 739                     if (message.getAttachments().isPresent()) {
 740                         for (SignalServiceAttachment attachment : message.getAttachments().get()) {
 741                             if (attachment.isPointer()) {
 742                                 attachments.add(m.getAttachmentFile(attachment.asPointer().getId()).getAbsolutePath());
 743                             }
 744                         }
 745                     }
 746
 747                     try {
 748                         conn.sendSignal(new Signal.MessageReceived(
 749                                 SIGNAL_OBJECTPATH,
 750                                 message.getTimestamp(),
 751                                 envelope.getSource(),
 752                                 message.getGroupInfo().isPresent() ? message.getGroupInfo().get().getGroupId() : new byte[0],
 753                                 message.getBody().isPresent() ? message.getBody().get() : "",
 754                                 attachments));
 755                     } catch (DBusException e) {
 756                         e.printStackTrace();
 757                     }
 758                 }
 759             }
 760         }
 761
 762         private void printAttachment(SignalServiceAttachment attachment) {
 763             System.out.println("- " + attachment.getContentType() + " (" + (attachment.isPointer() ? "Pointer" : "") + (attachment.isStream() ? "Stream" : "") + ")");
 764             if (attachment.isPointer()) {
 765                 final SignalServiceAttachmentPointer pointer = attachment.asPointer();
 766                 System.out.println("  Id: " + pointer.getId() + " Key length: " + pointer.getKey().length + (pointer.getRelay().isPresent() ? " Relay: " + pointer.getRelay().get() : ""));
 767                 System.out.println("  Size: " + (pointer.getSize().isPresent() ? pointer.getSize().get() + " bytes" : "<unavailable>") + (pointer.getPreview().isPresent() ? " (Preview is available: " + pointer.getPreview().get().length + " bytes)" : ""));
 768                 File file = m.getAttachmentFile(pointer.getId());
 769                 if (file.exists()) {
 770                     System.out.println("  Stored plaintext in: " + file);
 771                 }
 772             }
 773         }
 774     }
 775 }