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.DeviceInfo;
  33 import org.whispersystems.signalservice.api.messages.multidevice.ReadMessage;
  34 import org.whispersystems.signalservice.api.messages.multidevice.SentTranscriptMessage;
  35 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  36 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  37 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  38 import org.whispersystems.signalservice.api.push.exceptions.NetworkFailureException;
  39 import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
  40 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
  41
  42 import java.io.File;
  43 import java.io.IOException;
  44 import java.net.URI;
  45 import java.net.URISyntaxException;
  46 import java.security.Security;
  47 import java.util.ArrayList;
  48 import java.util.List;
  49 import java.util.concurrent.TimeoutException;
  50
  51 public class Main {
  52
  53     public static final String SIGNAL_BUSNAME = "org.asamk.Signal";
  54     public static final String SIGNAL_OBJECTPATH = "/org/asamk/Signal";
  55
  56     public static void main(String[] args) {
  57         // Workaround for BKS truststore
  58         Security.insertProviderAt(new org.bouncycastle.jce.provider.BouncyCastleProvider(), 1);
  59
  60         Namespace ns = parseArgs(args);
  61         if (ns == null) {
  62             System.exit(1);
  63         }
  64
  65         final String username = ns.getString("username");
  66         Manager m;
  67         Signal ts;
  68         DBusConnection dBusConn = null;
  69         try {
  70             if (ns.getBoolean("dbus") || ns.getBoolean("dbus_system")) {
  71                 try {
  72                     m = null;
  73                     int busType;
  74                     if (ns.getBoolean("dbus_system")) {
  75                         busType = DBusConnection.SYSTEM;
  76                     } else {
  77                         busType = DBusConnection.SESSION;
  78                     }
  79                     dBusConn = DBusConnection.getConnection(busType);
  80                     ts = (Signal) dBusConn.getRemoteObject(
  81                             SIGNAL_BUSNAME, SIGNAL_OBJECTPATH,
  82                             Signal.class);
  83                 } catch (DBusException e) {
  84                     e.printStackTrace();
  85                     if (dBusConn != null) {
  86                         dBusConn.disconnect();
  87                     }
  88                     System.exit(3);
  89                     return;
  90                 }
  91             } else {
  92                 String settingsPath = ns.getString("config");
  93                 if (TextUtils.isEmpty(settingsPath)) {
  94                     settingsPath = System.getProperty("user.home") + "/.config/signal";
  95                     if (!new File(settingsPath).exists()) {
  96                         String legacySettingsPath = System.getProperty("user.home") + "/.config/textsecure";
  97                         if (new File(legacySettingsPath).exists()) {
  98                             settingsPath = legacySettingsPath;
  99                         }
 100                     }
 101                 }
 102
 103                 m = new Manager(username, settingsPath);
 104                 ts = m;
 105                 if (m.userExists()) {
 106                     try {
 107                         m.load();
 108                     } catch (Exception e) {
 109                         System.err.println("Error loading state file \"" + m.getFileName() + "\": " + e.getMessage());
 110                         System.exit(2);
 111                         return;
 112                     }
 113                 }
 114             }
 115
 116             switch (ns.getString("command")) {
 117                 case "register":
 118                     if (dBusConn != null) {
 119                         System.err.println("register is not yet implemented via dbus");
 120                         System.exit(1);
 121                     }
 122                     if (!m.userHasKeys()) {
 123                         m.createNewIdentity();
 124                     }
 125                     try {
 126                         m.register(ns.getBoolean("voice"));
 127                     } catch (IOException e) {
 128                         System.err.println("Request verify error: " + e.getMessage());
 129                         System.exit(3);
 130                     }
 131                     break;
 132                 case "verify":
 133                     if (dBusConn != null) {
 134                         System.err.println("verify is not yet implemented via dbus");
 135                         System.exit(1);
 136                     }
 137                     if (!m.userHasKeys()) {
 138                         System.err.println("User has no keys, first call register.");
 139                         System.exit(1);
 140                     }
 141                     if (m.isRegistered()) {
 142                         System.err.println("User registration is already verified");
 143                         System.exit(1);
 144                     }
 145                     try {
 146                         m.verifyAccount(ns.getString("verificationCode"));
 147                     } catch (IOException e) {
 148                         System.err.println("Verify error: " + e.getMessage());
 149                         System.exit(3);
 150                     }
 151                     break;
 152                 case "link":
 153                     if (dBusConn != null) {
 154                         System.err.println("link is not yet implemented via dbus");
 155                         System.exit(1);
 156                     }
 157
 158                     // When linking, username is null and we always have to create keys
 159                     m.createNewIdentity();
 160
 161                     String deviceName = ns.getString("name");
 162                     if (deviceName == null) {
 163                         deviceName = "cli";
 164                     }
 165                     try {
 166                         System.out.println(m.getDeviceLinkUri());
 167                         m.finishDeviceLink(deviceName);
 168                         System.out.println("Associated with: " + m.getUsername());
 169                     } catch (TimeoutException e) {
 170                         System.err.println("Link request timed out, please try again.");
 171                         System.exit(3);
 172                     } catch (IOException e) {
 173                         System.err.println("Link request error: " + e.getMessage());
 174                         System.exit(3);
 175                     } catch (InvalidKeyException e) {
 176                         e.printStackTrace();
 177                         System.exit(3);
 178                     } catch (UserAlreadyExists e) {
 179                         System.err.println("The user " + e.getUsername() + " already exists\nDelete \"" + e.getFileName() + "\" before trying again.");
 180                         System.exit(3);
 181                     }
 182                     break;
 183                 case "addDevice":
 184                     if (dBusConn != null) {
 185                         System.err.println("link is not yet implemented via dbus");
 186                         System.exit(1);
 187                     }
 188                     if (!m.isRegistered()) {
 189                         System.err.println("User is not registered.");
 190                         System.exit(1);
 191                     }
 192                     try {
 193                         m.addDeviceLink(new URI(ns.getString("uri")));
 194                     } catch (IOException e) {
 195                         e.printStackTrace();
 196                         System.exit(3);
 197                     } catch (InvalidKeyException e) {
 198                         e.printStackTrace();
 199                         System.exit(2);
 200                     } catch (URISyntaxException e) {
 201                         e.printStackTrace();
 202                         System.exit(2);
 203                     }
 204                     break;
 205                 case "listDevices":
 206                     if (dBusConn != null) {
 207                         System.err.println("listDevices is not yet implemented via dbus");
 208                         System.exit(1);
 209                     }
 210                     if (!m.isRegistered()) {
 211                         System.err.println("User is not registered.");
 212                         System.exit(1);
 213                     }
 214                     try {
 215                         List<DeviceInfo> devices = m.getLinkedDevices();
 216                         for (DeviceInfo d : devices) {
 217                             System.out.println("Device " + d.getId() + (d.getId() == m.getDeviceId() ? " (this device)" : "") + ":");
 218                             System.out.println(" Name: " + d.getName());
 219                             System.out.println(" Created: " + d.getCreated());
 220                             System.out.println(" Last seen: " + d.getLastSeen());
 221                         }
 222                     } catch (IOException e) {
 223                         e.printStackTrace();
 224                         System.exit(3);
 225                     }
 226                     break;
 227                 case "send":
 228                     if (dBusConn == null && !m.isRegistered()) {
 229                         System.err.println("User is not registered.");
 230                         System.exit(1);
 231                     }
 232
 233                     if (ns.getBoolean("endsession")) {
 234                         if (ns.getList("recipient") == null) {
 235                             System.err.println("No recipients given");
 236                             System.err.println("Aborting sending.");
 237                             System.exit(1);
 238                         }
 239                         try {
 240                             ts.sendEndSessionMessage(ns.<String>getList("recipient"));
 241                         } catch (IOException e) {
 242                             handleIOException(e);
 243                         } catch (EncapsulatedExceptions e) {
 244                             handleEncapsulatedExceptions(e);
 245                         } catch (AssertionError e) {
 246                             handleAssertionError(e);
 247                         } catch (DBusExecutionException e) {
 248                             handleDBusExecutionException(e);
 249                         } catch (UntrustedIdentityException e) {
 250                             e.printStackTrace();
 251                         }
 252                     } else {
 253                         String messageText = ns.getString("message");
 254                         if (messageText == null) {
 255                             try {
 256                                 messageText = IOUtils.toString(System.in);
 257                             } catch (IOException e) {
 258                                 System.err.println("Failed to read message from stdin: " + e.getMessage());
 259                                 System.err.println("Aborting sending.");
 260                                 System.exit(1);
 261                             }
 262                         }
 263
 264                         try {
 265                             List<String> attachments = ns.getList("attachment");
 266                             if (attachments == null) {
 267                                 attachments = new ArrayList<>();
 268                             }
 269                             if (ns.getString("group") != null) {
 270                                 byte[] groupId = decodeGroupId(ns.getString("group"));
 271                                 ts.sendGroupMessage(messageText, attachments, groupId);
 272                             } else {
 273                                 ts.sendMessage(messageText, attachments, ns.<String>getList("recipient"));
 274                             }
 275                         } catch (IOException e) {
 276                             handleIOException(e);
 277                         } catch (EncapsulatedExceptions e) {
 278                             handleEncapsulatedExceptions(e);
 279                         } catch (AssertionError e) {
 280                             handleAssertionError(e);
 281                         } catch (GroupNotFoundException e) {
 282                             handleGroupNotFoundException(e);
 283                         } catch (AttachmentInvalidException e) {
 284                             System.err.println("Failed to add attachment: " + e.getMessage());
 285                             System.err.println("Aborting sending.");
 286                             System.exit(1);
 287                         } catch (DBusExecutionException e) {
 288                             handleDBusExecutionException(e);
 289                         } catch (UntrustedIdentityException e) {
 290                             e.printStackTrace();
 291                         }
 292                     }
 293
 294                     break;
 295                 case "receive":
 296                     if (dBusConn != null) {
 297                         try {
 298                             dBusConn.addSigHandler(Signal.MessageReceived.class, new DBusSigHandler<Signal.MessageReceived>() {
 299                                 @Override
 300                                 public void handle(Signal.MessageReceived s) {
 301                                     System.out.print(String.format("Envelope from: %s\nTimestamp: %d\nBody: %s\n",
 302                                             s.getSender(), s.getTimestamp(), s.getMessage()));
 303                                     if (s.getGroupId().length > 0) {
 304                                         System.out.println("Group info:");
 305                                         System.out.println("  Id: " + Base64.encodeBytes(s.getGroupId()));
 306                                     }
 307                                     if (s.getAttachments().size() > 0) {
 308                                         System.out.println("Attachments: ");
 309                                         for (String attachment : s.getAttachments()) {
 310                                             System.out.println("-  Stored plaintext in: " + attachment);
 311                                         }
 312                                     }
 313                                     System.out.println();
 314                                 }
 315                             });
 316                         } catch (DBusException e) {
 317                             e.printStackTrace();
 318                         }
 319                         while (true) {
 320                             try {
 321                                 Thread.sleep(10000);
 322                             } catch (InterruptedException e) {
 323                                 System.exit(0);
 324                             }
 325                         }
 326                     }
 327                     if (!m.isRegistered()) {
 328                         System.err.println("User is not registered.");
 329                         System.exit(1);
 330                     }
 331                     int timeout = 5;
 332                     if (ns.getInt("timeout") != null) {
 333                         timeout = ns.getInt("timeout");
 334                     }
 335                     boolean returnOnTimeout = true;
 336                     if (timeout < 0) {
 337                         returnOnTimeout = false;
 338                         timeout = 3600;
 339                     }
 340                     try {
 341                         m.receiveMessages(timeout, returnOnTimeout, new ReceiveMessageHandler(m));
 342                     } catch (IOException e) {
 343                         System.err.println("Error while receiving messages: " + e.getMessage());
 344                         System.exit(3);
 345                     } catch (AssertionError e) {
 346                         handleAssertionError(e);
 347                     }
 348                     break;
 349                 case "quitGroup":
 350                     if (dBusConn != null) {
 351                         System.err.println("quitGroup is not yet implemented via dbus");
 352                         System.exit(1);
 353                     }
 354                     if (!m.isRegistered()) {
 355                         System.err.println("User is not registered.");
 356                         System.exit(1);
 357                     }
 358
 359                     try {
 360                         m.sendQuitGroupMessage(decodeGroupId(ns.getString("group")));
 361                     } catch (IOException e) {
 362                         handleIOException(e);
 363                     } catch (EncapsulatedExceptions e) {
 364                         handleEncapsulatedExceptions(e);
 365                     } catch (AssertionError e) {
 366                         handleAssertionError(e);
 367                     } catch (GroupNotFoundException e) {
 368                         handleGroupNotFoundException(e);
 369                     } catch (UntrustedIdentityException e) {
 370                         e.printStackTrace();
 371                     }
 372
 373                     break;
 374                 case "updateGroup":
 375                     if (dBusConn != null) {
 376                         System.err.println("updateGroup is not yet implemented via dbus");
 377                         System.exit(1);
 378                     }
 379                     if (!m.isRegistered()) {
 380                         System.err.println("User is not registered.");
 381                         System.exit(1);
 382                     }
 383
 384                     try {
 385                         byte[] groupId = null;
 386                         if (ns.getString("group") != null) {
 387                             groupId = decodeGroupId(ns.getString("group"));
 388                         }
 389                         byte[] newGroupId = m.sendUpdateGroupMessage(groupId, ns.getString("name"), ns.<String>getList("member"), ns.getString("avatar"));
 390                         if (groupId == null) {
 391                             System.out.println("Creating new group \"" + Base64.encodeBytes(newGroupId) + "\" …");
 392                         }
 393                     } catch (IOException e) {
 394                         handleIOException(e);
 395                     } catch (AttachmentInvalidException e) {
 396                         System.err.println("Failed to add avatar attachment for group\": " + e.getMessage());
 397                         System.err.println("Aborting sending.");
 398                         System.exit(1);
 399                     } catch (GroupNotFoundException e) {
 400                         handleGroupNotFoundException(e);
 401                     } catch (EncapsulatedExceptions e) {
 402                         handleEncapsulatedExceptions(e);
 403                     } catch (UntrustedIdentityException e) {
 404                         e.printStackTrace();
 405                     }
 406
 407                     break;
 408                 case "daemon":
 409                     if (dBusConn != null) {
 410                         System.err.println("Stop it.");
 411                         System.exit(1);
 412                     }
 413                     if (!m.isRegistered()) {
 414                         System.err.println("User is not registered.");
 415                         System.exit(1);
 416                     }
 417                     DBusConnection conn = null;
 418                     try {
 419                         try {
 420                             int busType;
 421                             if (ns.getBoolean("system")) {
 422                                 busType = DBusConnection.SYSTEM;
 423                             } else {
 424                                 busType = DBusConnection.SESSION;
 425                             }
 426                             conn = DBusConnection.getConnection(busType);
 427                             conn.exportObject(SIGNAL_OBJECTPATH, m);
 428                             conn.requestBusName(SIGNAL_BUSNAME);
 429                         } catch (DBusException e) {
 430                             e.printStackTrace();
 431                             System.exit(3);
 432                         }
 433                         try {
 434                             m.receiveMessages(3600, false, new DbusReceiveMessageHandler(m, conn));
 435                         } catch (IOException e) {
 436                             System.err.println("Error while receiving messages: " + e.getMessage());
 437                             System.exit(3);
 438                         } catch (AssertionError e) {
 439                             handleAssertionError(e);
 440                         }
 441                     } finally {
 442                         if (conn != null) {
 443                             conn.disconnect();
 444                         }
 445                     }
 446
 447                     break;
 448             }
 449             System.exit(0);
 450         } finally {
 451             if (dBusConn != null) {
 452                 dBusConn.disconnect();
 453             }
 454         }
 455     }
 456
 457     private static void handleGroupNotFoundException(GroupNotFoundException e) {
 458         System.err.println("Failed to send to group: " + e.getMessage());
 459         System.err.println("Aborting sending.");
 460         System.exit(1);
 461     }
 462
 463     private static void handleDBusExecutionException(DBusExecutionException e) {
 464         System.err.println("Cannot connect to dbus: " + e.getMessage());
 465         System.err.println("Aborting.");
 466         System.exit(1);
 467     }
 468
 469     private static byte[] decodeGroupId(String groupId) {
 470         try {
 471             return Base64.decode(groupId);
 472         } catch (IOException e) {
 473             System.err.println("Failed to decode groupId (must be base64) \"" + groupId + "\": " + e.getMessage());
 474             System.err.println("Aborting sending.");
 475             System.exit(1);
 476             return null;
 477         }
 478     }
 479
 480     private static Namespace parseArgs(String[] args) {
 481         ArgumentParser parser = ArgumentParsers.newArgumentParser("signal-cli")
 482                 .defaultHelp(true)
 483                 .description("Commandline interface for Signal.")
 484                 .version(Manager.PROJECT_NAME + " " + Manager.PROJECT_VERSION);
 485
 486         parser.addArgument("-v", "--version")
 487                 .help("Show package version.")
 488                 .action(Arguments.version());
 489         parser.addArgument("--config")
 490                 .help("Set the path, where to store the config (Default: $HOME/.config/signal-cli).");
 491
 492         MutuallyExclusiveGroup mut = parser.addMutuallyExclusiveGroup();
 493         mut.addArgument("-u", "--username")
 494                 .help("Specify your phone number, that will be used for verification.");
 495         mut.addArgument("--dbus")
 496                 .help("Make request via user dbus.")
 497                 .action(Arguments.storeTrue());
 498         mut.addArgument("--dbus-system")
 499                 .help("Make request via system dbus.")
 500                 .action(Arguments.storeTrue());
 501
 502         Subparsers subparsers = parser.addSubparsers()
 503                 .title("subcommands")
 504                 .dest("command")
 505                 .description("valid subcommands")
 506                 .help("additional help");
 507
 508         Subparser parserLink = subparsers.addParser("link");
 509         parserLink.addArgument("-n", "--name")
 510                 .help("Specify a name to describe this new device.");
 511
 512         Subparser parserAddDevice = subparsers.addParser("addDevice");
 513         parserAddDevice.addArgument("--uri")
 514                 .required(true)
 515                 .help("Specify the uri contained in the QR code shown by the new device.");
 516
 517         Subparser parserDevices = subparsers.addParser("listDevices");
 518
 519         Subparser parserRegister = subparsers.addParser("register");
 520         parserRegister.addArgument("-v", "--voice")
 521                 .help("The verification should be done over voice, not sms.")
 522                 .action(Arguments.storeTrue());
 523
 524         Subparser parserVerify = subparsers.addParser("verify");
 525         parserVerify.addArgument("verificationCode")
 526                 .help("The verification code you received via sms or voice call.");
 527
 528         Subparser parserSend = subparsers.addParser("send");
 529         parserSend.addArgument("-g", "--group")
 530                 .help("Specify the recipient group ID.");
 531         parserSend.addArgument("recipient")
 532                 .help("Specify the recipients' phone number.")
 533                 .nargs("*");
 534         parserSend.addArgument("-m", "--message")
 535                 .help("Specify the message, if missing standard input is used.");
 536         parserSend.addArgument("-a", "--attachment")
 537                 .nargs("*")
 538                 .help("Add file as attachment");
 539         parserSend.addArgument("-e", "--endsession")
 540                 .help("Clear session state and send end session message.")
 541                 .action(Arguments.storeTrue());
 542
 543         Subparser parserLeaveGroup = subparsers.addParser("quitGroup");
 544         parserLeaveGroup.addArgument("-g", "--group")
 545                 .required(true)
 546                 .help("Specify the recipient group ID.");
 547
 548         Subparser parserUpdateGroup = subparsers.addParser("updateGroup");
 549         parserUpdateGroup.addArgument("-g", "--group")
 550                 .help("Specify the recipient group ID.");
 551         parserUpdateGroup.addArgument("-n", "--name")
 552                 .help("Specify the new group name.");
 553         parserUpdateGroup.addArgument("-a", "--avatar")
 554                 .help("Specify a new group avatar image file");
 555         parserUpdateGroup.addArgument("-m", "--member")
 556                 .nargs("*")
 557                 .help("Specify one or more members to add to the group");
 558
 559         Subparser parserReceive = subparsers.addParser("receive");
 560         parserReceive.addArgument("-t", "--timeout")
 561                 .type(int.class)
 562                 .help("Number of seconds to wait for new messages (negative values disable timeout)");
 563
 564         Subparser parserDaemon = subparsers.addParser("daemon");
 565         parserDaemon.addArgument("--system")
 566                 .action(Arguments.storeTrue())
 567                 .help("Use DBus system bus instead of user bus.");
 568
 569         try {
 570             Namespace ns = parser.parseArgs(args);
 571             if ("link".equals(ns.getString("command"))) {
 572                 if (ns.getString("username") != null) {
 573                     parser.printUsage();
 574                     System.err.println("You cannot specify a username (phone number) when linking");
 575                     System.exit(2);
 576                 }
 577             } else if (!ns.getBoolean("dbus") && !ns.getBoolean("dbus_system")) {
 578                 if (ns.getString("username") == null) {
 579                     parser.printUsage();
 580                     System.err.println("You need to specify a username (phone number)");
 581                     System.exit(2);
 582                 }
 583                 if (!PhoneNumberFormatter.isValidNumber(ns.getString("username"))) {
 584                     System.err.println("Invalid username (phone number), make sure you include the country code.");
 585                     System.exit(2);
 586                 }
 587             }
 588             if (ns.getList("recipient") != null && !ns.getList("recipient").isEmpty() && ns.getString("group") != null) {
 589                 System.err.println("You cannot specify recipients by phone number and groups a the same time");
 590                 System.exit(2);
 591             }
 592             return ns;
 593         } catch (ArgumentParserException e) {
 594             parser.handleError(e);
 595             return null;
 596         }
 597     }
 598
 599     private static void handleAssertionError(AssertionError e) {
 600         System.err.println("Failed to send/receive message (Assertion): " + e.getMessage());
 601         e.printStackTrace();
 602         System.err.println("If you use an Oracle JRE please check if you have unlimited strength crypto enabled, see README");
 603         System.exit(1);
 604     }
 605
 606     private static void handleEncapsulatedExceptions(EncapsulatedExceptions e) {
 607         System.err.println("Failed to send (some) messages:");
 608         for (NetworkFailureException n : e.getNetworkExceptions()) {
 609             System.err.println("Network failure for \"" + n.getE164number() + "\": " + n.getMessage());
 610         }
 611         for (UnregisteredUserException n : e.getUnregisteredUserExceptions()) {
 612             System.err.println("Unregistered user \"" + n.getE164Number() + "\": " + n.getMessage());
 613         }
 614         for (UntrustedIdentityException n : e.getUntrustedIdentityExceptions()) {
 615             System.err.println("Untrusted Identity for \"" + n.getE164Number() + "\": " + n.getMessage());
 616         }
 617     }
 618
 619     private static void handleIOException(IOException e) {
 620         System.err.println("Failed to send message: " + e.getMessage());
 621     }
 622
 623     private static class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {
 624         final Manager m;
 625
 626         public ReceiveMessageHandler(Manager m) {
 627             this.m = m;
 628         }
 629
 630         @Override
 631         public void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, GroupInfo group) {
 632             SignalServiceAddress source = envelope.getSourceAddress();
 633             System.out.println(String.format("Envelope from: %s (device: %d)", source.getNumber(), envelope.getSourceDevice()));
 634             if (source.getRelay().isPresent()) {
 635                 System.out.println("Relayed by: " + source.getRelay().get());
 636             }
 637             System.out.println("Timestamp: " + envelope.getTimestamp());
 638
 639             if (envelope.isReceipt()) {
 640                 System.out.println("Got receipt.");
 641             } else if (envelope.isSignalMessage() | envelope.isPreKeySignalMessage()) {
 642                 if (content == null) {
 643                     System.out.println("Failed to decrypt message.");
 644                 } else {
 645                     if (content.getDataMessage().isPresent()) {
 646                         SignalServiceDataMessage message = content.getDataMessage().get();
 647                         handleSignalServiceDataMessage(message, group);
 648                     }
 649                     if (content.getSyncMessage().isPresent()) {
 650                         System.out.println("Received a sync message");
 651                         SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
 652
 653                         if (syncMessage.getContacts().isPresent()) {
 654                             System.out.println("Received sync contacts");
 655                             printAttachment(syncMessage.getContacts().get());
 656                         }
 657                         if (syncMessage.getGroups().isPresent()) {
 658                             System.out.println("Received sync groups");
 659                             printAttachment(syncMessage.getGroups().get());
 660                         }
 661                         if (syncMessage.getRead().isPresent()) {
 662                             System.out.println("Received sync read messages list");
 663                             for (ReadMessage rm : syncMessage.getRead().get()) {
 664                                 System.out.println("From: " + rm.getSender() + " Message timestamp: " + rm.getTimestamp());
 665                             }
 666                         }
 667                         if (syncMessage.getRequest().isPresent()) {
 668                             System.out.println("Received sync request");
 669                             if (syncMessage.getRequest().get().isContactsRequest()) {
 670                                 System.out.println(" - contacts request");
 671                             }
 672                             if (syncMessage.getRequest().get().isGroupsRequest()) {
 673                                 System.out.println(" - groups request");
 674                             }
 675                         }
 676                         if (syncMessage.getSent().isPresent()) {
 677                             System.out.println("Received sync sent message");
 678                             final SentTranscriptMessage sentTranscriptMessage = syncMessage.getSent().get();
 679                             System.out.println("To: " + (sentTranscriptMessage.getDestination().isPresent() ? sentTranscriptMessage.getDestination().get() : "Unknown") + " , Message timestamp: " + sentTranscriptMessage.getTimestamp());
 680                             SignalServiceDataMessage message = sentTranscriptMessage.getMessage();
 681                             handleSignalServiceDataMessage(message, null);
 682                         }
 683                     }
 684                 }
 685             } else {
 686                 System.out.println("Unknown message received.");
 687             }
 688             System.out.println();
 689         }
 690
 691         // TODO remove group parameter
 692         private void handleSignalServiceDataMessage(SignalServiceDataMessage message, GroupInfo group) {
 693             System.out.println("Message timestamp: " + message.getTimestamp());
 694
 695             if (message.getBody().isPresent()) {
 696                 System.out.println("Body: " + message.getBody().get());
 697             }
 698             if (message.getGroupInfo().isPresent()) {
 699                 SignalServiceGroup groupInfo = message.getGroupInfo().get();
 700                 System.out.println("Group info:");
 701                 System.out.println("  Id: " + Base64.encodeBytes(groupInfo.getGroupId()));
 702                 if (groupInfo.getName().isPresent()) {
 703                     System.out.println("  Name: " + groupInfo.getName().get());
 704                 } else if (group != null) {
 705                     System.out.println("  Name: " + group.name);
 706                 } else {
 707                     System.out.println("  Name: <Unknown group>");
 708                 }
 709                 System.out.println("  Type: " + groupInfo.getType());
 710                 if (groupInfo.getMembers().isPresent()) {
 711                     for (String member : groupInfo.getMembers().get()) {
 712                         System.out.println("  Member: " + member);
 713                     }
 714                 }
 715                 if (groupInfo.getAvatar().isPresent()) {
 716                     System.out.println("  Avatar:");
 717                     printAttachment(groupInfo.getAvatar().get());
 718                 }
 719             }
 720             if (message.isEndSession()) {
 721                 System.out.println("Is end session");
 722             }
 723
 724             if (message.getAttachments().isPresent()) {
 725                 System.out.println("Attachments: ");
 726                 for (SignalServiceAttachment attachment : message.getAttachments().get()) {
 727                     printAttachment(attachment);
 728                 }
 729             }
 730         }
 731
 732         private void printAttachment(SignalServiceAttachment attachment) {
 733             System.out.println("- " + attachment.getContentType() + " (" + (attachment.isPointer() ? "Pointer" : "") + (attachment.isStream() ? "Stream" : "") + ")");
 734             if (attachment.isPointer()) {
 735                 final SignalServiceAttachmentPointer pointer = attachment.asPointer();
 736                 System.out.println("  Id: " + pointer.getId() + " Key length: " + pointer.getKey().length + (pointer.getRelay().isPresent() ? " Relay: " + pointer.getRelay().get() : ""));
 737                 System.out.println("  Size: " + (pointer.getSize().isPresent() ? pointer.getSize().get() + " bytes" : "<unavailable>") + (pointer.getPreview().isPresent() ? " (Preview is available: " + pointer.getPreview().get().length + " bytes)" : ""));
 738                 File file = m.getAttachmentFile(pointer.getId());
 739                 if (file.exists()) {
 740                     System.out.println("  Stored plaintext in: " + file);
 741                 }
 742             }
 743         }
 744     }
 745
 746     private static class DbusReceiveMessageHandler extends ReceiveMessageHandler {
 747         final DBusConnection conn;
 748
 749         public DbusReceiveMessageHandler(Manager m, DBusConnection conn) {
 750             super(m);
 751             this.conn = conn;
 752         }
 753
 754         @Override
 755         public void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent content, GroupInfo group) {
 756             super.handleMessage(envelope, content, group);
 757
 758             if (!envelope.isReceipt() && content != null && content.getDataMessage().isPresent()) {
 759                 SignalServiceDataMessage message = content.getDataMessage().get();
 760
 761                 if (!message.isEndSession() &&
 762                         !(message.getGroupInfo().isPresent() &&
 763                                 message.getGroupInfo().get().getType() != SignalServiceGroup.Type.DELIVER)) {
 764                     List<String> attachments = new ArrayList<>();
 765                     if (message.getAttachments().isPresent()) {
 766                         for (SignalServiceAttachment attachment : message.getAttachments().get()) {
 767                             if (attachment.isPointer()) {
 768                                 attachments.add(m.getAttachmentFile(attachment.asPointer().getId()).getAbsolutePath());
 769                             }
 770                         }
 771                     }
 772
 773                     try {
 774                         conn.sendSignal(new Signal.MessageReceived(
 775                                 SIGNAL_OBJECTPATH,
 776                                 message.getTimestamp(),
 777                                 envelope.getSource(),
 778                                 message.getGroupInfo().isPresent() ? message.getGroupInfo().get().getGroupId() : new byte[0],
 779                                 message.getBody().isPresent() ? message.getBody().get() : "",
 780                                 attachments));
 781                     } catch (DBusException e) {
 782                         e.printStackTrace();
 783                     }
 784                 }
 785             }
 786         }
 787
 788         private void printAttachment(SignalServiceAttachment attachment) {
 789             System.out.println("- " + attachment.getContentType() + " (" + (attachment.isPointer() ? "Pointer" : "") + (attachment.isStream() ? "Stream" : "") + ")");
 790             if (attachment.isPointer()) {
 791                 final SignalServiceAttachmentPointer pointer = attachment.asPointer();
 792                 System.out.println("  Id: " + pointer.getId() + " Key length: " + pointer.getKey().length + (pointer.getRelay().isPresent() ? " Relay: " + pointer.getRelay().get() : ""));
 793                 System.out.println("  Size: " + (pointer.getSize().isPresent() ? pointer.getSize().get() + " bytes" : "<unavailable>") + (pointer.getPreview().isPresent() ? " (Preview is available: " + pointer.getPreview().get().length + " bytes)" : ""));
 794                 File file = m.getAttachmentFile(pointer.getId());
 795                 if (file.exists()) {
 796                     System.out.println("  Stored plaintext in: " + file);
 797                 }
 798             }
 799         }
 800     }
 801 }