nmode's Git Repositories - signal-cli/blob - src/main/java/org/asamk/signal/Manager.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.databind.DeserializationFeature;
  22 import com.fasterxml.jackson.databind.JsonNode;
  23 import com.fasterxml.jackson.databind.ObjectMapper;
  24 import com.fasterxml.jackson.databind.SerializationFeature;
  25 import com.fasterxml.jackson.databind.node.ObjectNode;
  26 import org.apache.http.util.TextUtils;
  27 import org.asamk.Signal;
  28 import org.whispersystems.libsignal.*;
  29 import org.whispersystems.libsignal.ecc.Curve;
  30 import org.whispersystems.libsignal.ecc.ECKeyPair;
  31 import org.whispersystems.libsignal.ecc.ECPublicKey;
  32 import org.whispersystems.libsignal.state.PreKeyRecord;
  33 import org.whispersystems.libsignal.state.SignalProtocolStore;
  34 import org.whispersystems.libsignal.state.SignedPreKeyRecord;
  35 import org.whispersystems.libsignal.util.KeyHelper;
  36 import org.whispersystems.libsignal.util.Medium;
  37 import org.whispersystems.libsignal.util.guava.Optional;
  38 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
  39 import org.whispersystems.signalservice.api.SignalServiceMessagePipe;
  40 import org.whispersystems.signalservice.api.SignalServiceMessageReceiver;
  41 import org.whispersystems.signalservice.api.SignalServiceMessageSender;
  42 import org.whispersystems.signalservice.api.crypto.SignalServiceCipher;
  43 import org.whispersystems.signalservice.api.crypto.UntrustedIdentityException;
  44 import org.whispersystems.signalservice.api.messages.*;
  45 import org.whispersystems.signalservice.api.messages.multidevice.*;
  46 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  47 import org.whispersystems.signalservice.api.push.TrustStore;
  48 import org.whispersystems.signalservice.api.push.exceptions.AuthorizationFailedException;
  49 import org.whispersystems.signalservice.api.push.exceptions.EncapsulatedExceptions;
  50 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  51 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
  52 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
  53
  54 import java.io.*;
  55 import java.net.URI;
  56 import java.net.URISyntaxException;
  57 import java.net.URLDecoder;
  58 import java.net.URLEncoder;
  59 import java.nio.file.Files;
  60 import java.nio.file.Paths;
  61 import java.util.*;
  62 import java.util.concurrent.TimeUnit;
  63 import java.util.concurrent.TimeoutException;
  64
  65 class Manager implements Signal {
  66     private final static String URL = "https://textsecure-service.whispersystems.org";
  67     private final static TrustStore TRUST_STORE = new WhisperTrustStore();
  68
  69     public final static String PROJECT_NAME = Manager.class.getPackage().getImplementationTitle();
  70     public final static String PROJECT_VERSION = Manager.class.getPackage().getImplementationVersion();
  71     private final static String USER_AGENT = PROJECT_NAME == null ? null : PROJECT_NAME + " " + PROJECT_VERSION;
  72
  73     private final static int PREKEY_MINIMUM_COUNT = 20;
  74     private static final int PREKEY_BATCH_SIZE = 100;
  75
  76     private final String settingsPath;
  77     private final String dataPath;
  78     private final String attachmentsPath;
  79
  80     private final ObjectMapper jsonProcessot = new ObjectMapper();
  81     private String username;
  82     private int deviceId = SignalServiceAddress.DEFAULT_DEVICE_ID;
  83     private String password;
  84     private String signalingKey;
  85     private int preKeyIdOffset;
  86     private int nextSignedPreKeyId;
  87
  88     private boolean registered = false;
  89
  90     private SignalProtocolStore signalProtocolStore;
  91     private SignalServiceAccountManager accountManager;
  92     private JsonGroupStore groupStore;
  93
  94     public Manager(String username, String settingsPath) {
  95         this.username = username;
  96         this.settingsPath = settingsPath;
  97         this.dataPath = this.settingsPath + "/data";
  98         this.attachmentsPath = this.settingsPath + "/attachments";
  99
 100         jsonProcessot.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.NONE); // disable autodetect
 101         jsonProcessot.enable(SerializationFeature.INDENT_OUTPUT); // for pretty print, you can disable it.
 102         jsonProcessot.enable(SerializationFeature.WRITE_NULL_MAP_VALUES);
 103         jsonProcessot.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
 104     }
 105
 106     public String getUsername() {
 107         return username;
 108     }
 109
 110     public int getDeviceId() {
 111         return deviceId;
 112     }
 113
 114     public String getFileName() {
 115         new File(dataPath).mkdirs();
 116         return dataPath + "/" + username;
 117     }
 118
 119     public boolean userExists() {
 120         if (username == null) {
 121             return false;
 122         }
 123         File f = new File(getFileName());
 124         return !(!f.exists() || f.isDirectory());
 125     }
 126
 127     public boolean userHasKeys() {
 128         return signalProtocolStore != null;
 129     }
 130
 131     private JsonNode getNotNullNode(JsonNode parent, String name) throws InvalidObjectException {
 132         JsonNode node = parent.get(name);
 133         if (node == null) {
 134             throw new InvalidObjectException(String.format("Incorrect file format: expected parameter %s not found ", name));
 135         }
 136
 137         return node;
 138     }
 139
 140     public void load() throws IOException, InvalidKeyException {
 141         JsonNode rootNode = jsonProcessot.readTree(new File(getFileName()));
 142
 143         JsonNode node = rootNode.get("deviceId");
 144         if (node != null) {
 145             deviceId = node.asInt();
 146         }
 147         username = getNotNullNode(rootNode, "username").asText();
 148         password = getNotNullNode(rootNode, "password").asText();
 149         if (rootNode.has("signalingKey")) {
 150             signalingKey = getNotNullNode(rootNode, "signalingKey").asText();
 151         }
 152         if (rootNode.has("preKeyIdOffset")) {
 153             preKeyIdOffset = getNotNullNode(rootNode, "preKeyIdOffset").asInt(0);
 154         } else {
 155             preKeyIdOffset = 0;
 156         }
 157         if (rootNode.has("nextSignedPreKeyId")) {
 158             nextSignedPreKeyId = getNotNullNode(rootNode, "nextSignedPreKeyId").asInt();
 159         } else {
 160             nextSignedPreKeyId = 0;
 161         }
 162         signalProtocolStore = jsonProcessot.convertValue(getNotNullNode(rootNode, "axolotlStore"), JsonSignalProtocolStore.class);
 163         registered = getNotNullNode(rootNode, "registered").asBoolean();
 164         JsonNode groupStoreNode = rootNode.get("groupStore");
 165         if (groupStoreNode != null) {
 166             groupStore = jsonProcessot.convertValue(groupStoreNode, JsonGroupStore.class);
 167         }
 168         if (groupStore == null) {
 169             groupStore = new JsonGroupStore();
 170         }
 171         accountManager = new SignalServiceAccountManager(URL, TRUST_STORE, username, password, deviceId, USER_AGENT);
 172         try {
 173             if (registered && accountManager.getPreKeysCount() < PREKEY_MINIMUM_COUNT) {
 174                 refreshPreKeys();
 175                 save();
 176             }
 177         } catch (AuthorizationFailedException e) {
 178             System.err.println("Authorization failed, was the number registered elsewhere?");
 179         }
 180     }
 181
 182     private void save() {
 183         ObjectNode rootNode = jsonProcessot.createObjectNode();
 184         rootNode.put("username", username)
 185                 .put("deviceId", deviceId)
 186                 .put("password", password)
 187                 .put("signalingKey", signalingKey)
 188                 .put("preKeyIdOffset", preKeyIdOffset)
 189                 .put("nextSignedPreKeyId", nextSignedPreKeyId)
 190                 .put("registered", registered)
 191                 .putPOJO("axolotlStore", signalProtocolStore)
 192                 .putPOJO("groupStore", groupStore)
 193         ;
 194         try {
 195             jsonProcessot.writeValue(new File(getFileName()), rootNode);
 196         } catch (Exception e) {
 197             System.err.println(String.format("Error saving file: %s", e.getMessage()));
 198         }
 199     }
 200
 201     public void createNewIdentity() {
 202         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 203         int registrationId = KeyHelper.generateRegistrationId(false);
 204         signalProtocolStore = new JsonSignalProtocolStore(identityKey, registrationId);
 205         groupStore = new JsonGroupStore();
 206         registered = false;
 207         save();
 208     }
 209
 210     public boolean isRegistered() {
 211         return registered;
 212     }
 213
 214     public void register(boolean voiceVerication) throws IOException {
 215         password = Util.getSecret(18);
 216
 217         accountManager = new SignalServiceAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 218
 219         if (voiceVerication)
 220             accountManager.requestVoiceVerificationCode();
 221         else
 222             accountManager.requestSmsVerificationCode();
 223
 224         registered = false;
 225         save();
 226     }
 227
 228     public URI getDeviceLinkUri() throws TimeoutException, IOException {
 229         password = Util.getSecret(18);
 230
 231         accountManager = new SignalServiceAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 232         String uuid = accountManager.getNewDeviceUuid();
 233
 234         registered = false;
 235         try {
 236             return new URI("tsdevice:/?uuid=" + URLEncoder.encode(uuid, "utf-8") + "&pub_key=" + URLEncoder.encode(Base64.encodeBytesWithoutPadding(signalProtocolStore.getIdentityKeyPair().getPublicKey().serialize()), "utf-8"));
 237         } catch (URISyntaxException e) {
 238             // Shouldn't happen
 239             return null;
 240         }
 241     }
 242
 243     public void finishDeviceLink(String deviceName) throws IOException, InvalidKeyException, TimeoutException, UserAlreadyExists {
 244         signalingKey = Util.getSecret(52);
 245         SignalServiceAccountManager.NewDeviceRegistrationReturn ret = accountManager.finishNewDeviceRegistration(signalProtocolStore.getIdentityKeyPair(), signalingKey, false, true, signalProtocolStore.getLocalRegistrationId(), deviceName);
 246         deviceId = ret.getDeviceId();
 247         username = ret.getNumber();
 248         // TODO do this check before actually registering
 249         if (userExists()) {
 250             throw new UserAlreadyExists(username, getFileName());
 251         }
 252         signalProtocolStore = new JsonSignalProtocolStore(ret.getIdentity(), signalProtocolStore.getLocalRegistrationId());
 253
 254         registered = true;
 255         refreshPreKeys();
 256
 257         requestSyncGroups();
 258         requestSyncContacts();
 259
 260         save();
 261     }
 262
 263     public List<DeviceInfo> getLinkedDevices() throws IOException {
 264         return accountManager.getDevices();
 265     }
 266
 267     public static Map<String, String> getQueryMap(String query) {
 268         String[] params = query.split("&");
 269         Map<String, String> map = new HashMap<>();
 270         for (String param : params) {
 271             String name = null;
 272             try {
 273                 name = URLDecoder.decode(param.split("=")[0], "utf-8");
 274             } catch (UnsupportedEncodingException e) {
 275                 // Impossible
 276             }
 277             String value = null;
 278             try {
 279                 value = URLDecoder.decode(param.split("=")[1], "utf-8");
 280             } catch (UnsupportedEncodingException e) {
 281                 // Impossible
 282             }
 283             map.put(name, value);
 284         }
 285         return map;
 286     }
 287
 288     public void addDeviceLink(URI linkUri) throws IOException, InvalidKeyException {
 289         Map<String, String> query = getQueryMap(linkUri.getQuery());
 290         String deviceIdentifier = query.get("uuid");
 291         String publicKeyEncoded = query.get("pub_key");
 292
 293         if (TextUtils.isEmpty(deviceIdentifier) || TextUtils.isEmpty(publicKeyEncoded)) {
 294             throw new RuntimeException("Invalid device link uri");
 295         }
 296
 297         ECPublicKey deviceKey = Curve.decodePoint(Base64.decode(publicKeyEncoded), 0);
 298
 299         addDeviceLink(deviceIdentifier, deviceKey);
 300     }
 301
 302     private void addDeviceLink(String deviceIdentifier, ECPublicKey deviceKey) throws IOException, InvalidKeyException {
 303         IdentityKeyPair identityKeyPair = signalProtocolStore.getIdentityKeyPair();
 304         String verificationCode = accountManager.getNewDeviceVerificationCode();
 305
 306         accountManager.addDevice(deviceIdentifier, deviceKey, identityKeyPair, verificationCode);
 307     }
 308
 309     private List<PreKeyRecord> generatePreKeys() {
 310         List<PreKeyRecord> records = new LinkedList<>();
 311
 312         for (int i = 0; i < PREKEY_BATCH_SIZE; i++) {
 313             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 314             ECKeyPair keyPair = Curve.generateKeyPair();
 315             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 316
 317             signalProtocolStore.storePreKey(preKeyId, record);
 318             records.add(record);
 319         }
 320
 321         preKeyIdOffset = (preKeyIdOffset + PREKEY_BATCH_SIZE + 1) % Medium.MAX_VALUE;
 322         save();
 323
 324         return records;
 325     }
 326
 327     private PreKeyRecord getOrGenerateLastResortPreKey() {
 328         if (signalProtocolStore.containsPreKey(Medium.MAX_VALUE)) {
 329             try {
 330                 return signalProtocolStore.loadPreKey(Medium.MAX_VALUE);
 331             } catch (InvalidKeyIdException e) {
 332                 signalProtocolStore.removePreKey(Medium.MAX_VALUE);
 333             }
 334         }
 335
 336         ECKeyPair keyPair = Curve.generateKeyPair();
 337         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 338
 339         signalProtocolStore.storePreKey(Medium.MAX_VALUE, record);
 340         save();
 341
 342         return record;
 343     }
 344
 345     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 346         try {
 347             ECKeyPair keyPair = Curve.generateKeyPair();
 348             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 349             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 350
 351             signalProtocolStore.storeSignedPreKey(nextSignedPreKeyId, record);
 352             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 353             save();
 354
 355             return record;
 356         } catch (InvalidKeyException e) {
 357             throw new AssertionError(e);
 358         }
 359     }
 360
 361     public void verifyAccount(String verificationCode) throws IOException {
 362         verificationCode = verificationCode.replace("-", "");
 363         signalingKey = Util.getSecret(52);
 364         accountManager.verifyAccountWithCode(verificationCode, signalingKey, signalProtocolStore.getLocalRegistrationId(), false, true);
 365
 366         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 367         registered = true;
 368
 369         refreshPreKeys();
 370         save();
 371     }
 372
 373     private void refreshPreKeys() throws IOException {
 374         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 375         PreKeyRecord lastResortKey = getOrGenerateLastResortPreKey();
 376         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(signalProtocolStore.getIdentityKeyPair());
 377
 378         accountManager.setPreKeys(signalProtocolStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 379     }
 380
 381
 382     private static List<SignalServiceAttachment> getSignalServiceAttachments(List<String> attachments) throws AttachmentInvalidException {
 383         List<SignalServiceAttachment> SignalServiceAttachments = null;
 384         if (attachments != null) {
 385             SignalServiceAttachments = new ArrayList<>(attachments.size());
 386             for (String attachment : attachments) {
 387                 try {
 388                     SignalServiceAttachments.add(createAttachment(attachment));
 389                 } catch (IOException e) {
 390                     throw new AttachmentInvalidException(attachment, e);
 391                 }
 392             }
 393         }
 394         return SignalServiceAttachments;
 395     }
 396
 397     private static SignalServiceAttachment createAttachment(String attachment) throws IOException {
 398         File attachmentFile = new File(attachment);
 399         InputStream attachmentStream = new FileInputStream(attachmentFile);
 400         final long attachmentSize = attachmentFile.length();
 401         String mime = Files.probeContentType(Paths.get(attachment));
 402         return new SignalServiceAttachmentStream(attachmentStream, mime, attachmentSize, null);
 403     }
 404
 405     @Override
 406     public void sendGroupMessage(String messageText, List<String> attachments,
 407                                  byte[] groupId)
 408             throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, UntrustedIdentityException {
 409         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 410         if (attachments != null) {
 411             messageBuilder.withAttachments(getSignalServiceAttachments(attachments));
 412         }
 413         if (groupId != null) {
 414             SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.DELIVER)
 415                     .withId(groupId)
 416                     .build();
 417             messageBuilder.asGroupMessage(group);
 418         }
 419         SignalServiceDataMessage message = messageBuilder.build();
 420
 421         Set<String> members = groupStore.getGroup(groupId).members;
 422         members.remove(this.username);
 423         sendMessage(message, members);
 424     }
 425
 426     public void sendQuitGroupMessage(byte[] groupId) throws GroupNotFoundException, IOException, EncapsulatedExceptions, UntrustedIdentityException {
 427         SignalServiceGroup group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.QUIT)
 428                 .withId(groupId)
 429                 .build();
 430
 431         SignalServiceDataMessage message = SignalServiceDataMessage.newBuilder()
 432                 .asGroupMessage(group)
 433                 .build();
 434
 435         final GroupInfo g = groupStore.getGroup(groupId);
 436         g.members.remove(this.username);
 437         groupStore.updateGroup(g);
 438
 439         sendMessage(message, g.members);
 440     }
 441
 442     public byte[] sendUpdateGroupMessage(byte[] groupId, String name, Collection<String> members, String avatarFile) throws IOException, EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, UntrustedIdentityException {
 443         GroupInfo g;
 444         if (groupId == null) {
 445             // Create new group
 446             g = new GroupInfo(Util.getSecretBytes(16));
 447             g.members.add(username);
 448         } else {
 449             g = groupStore.getGroup(groupId);
 450         }
 451
 452         if (name != null) {
 453             g.name = name;
 454         }
 455
 456         if (members != null) {
 457             for (String member : members) {
 458                 try {
 459                     g.members.add(canonicalizeNumber(member));
 460                 } catch (InvalidNumberException e) {
 461                     System.err.println("Failed to add member \"" + member + "\" to group: " + e.getMessage());
 462                     System.err.println("Aborting…");
 463                     System.exit(1);
 464                 }
 465             }
 466         }
 467
 468         SignalServiceGroup.Builder group = SignalServiceGroup.newBuilder(SignalServiceGroup.Type.UPDATE)
 469                 .withId(g.groupId)
 470                 .withName(g.name)
 471                 .withMembers(new ArrayList<>(g.members));
 472
 473         if (avatarFile != null) {
 474             try {
 475                 group.withAvatar(createAttachment(avatarFile));
 476                 // TODO
 477                 g.avatarId = 0;
 478             } catch (IOException e) {
 479                 throw new AttachmentInvalidException(avatarFile, e);
 480             }
 481         }
 482
 483         groupStore.updateGroup(g);
 484
 485         SignalServiceDataMessage message = SignalServiceDataMessage.newBuilder()
 486                 .asGroupMessage(group.build())
 487                 .build();
 488
 489         final Set<String> membersSend = g.members;
 490         membersSend.remove(this.username);
 491         sendMessage(message, membersSend);
 492         return g.groupId;
 493     }
 494
 495     @Override
 496     public void sendMessage(String message, List<String> attachments, String recipient)
 497             throws EncapsulatedExceptions, AttachmentInvalidException, IOException, UntrustedIdentityException {
 498         List<String> recipients = new ArrayList<>(1);
 499         recipients.add(recipient);
 500         sendMessage(message, attachments, recipients);
 501     }
 502
 503     @Override
 504     public void sendMessage(String messageText, List<String> attachments,
 505                             List<String> recipients)
 506             throws IOException, EncapsulatedExceptions, AttachmentInvalidException, UntrustedIdentityException {
 507         final SignalServiceDataMessage.Builder messageBuilder = SignalServiceDataMessage.newBuilder().withBody(messageText);
 508         if (attachments != null) {
 509             messageBuilder.withAttachments(getSignalServiceAttachments(attachments));
 510         }
 511         SignalServiceDataMessage message = messageBuilder.build();
 512
 513         sendMessage(message, recipients);
 514     }
 515
 516     @Override
 517     public void sendEndSessionMessage(List<String> recipients) throws IOException, EncapsulatedExceptions, UntrustedIdentityException {
 518         SignalServiceDataMessage message = SignalServiceDataMessage.newBuilder()
 519                 .asEndSessionMessage()
 520                 .build();
 521
 522         sendMessage(message, recipients);
 523     }
 524
 525     private void requestSyncGroups() throws IOException {
 526         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
 527         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 528         try {
 529             sendMessage(message);
 530         } catch (EncapsulatedExceptions encapsulatedExceptions) {
 531             encapsulatedExceptions.printStackTrace();
 532         } catch (UntrustedIdentityException e) {
 533             e.printStackTrace();
 534         }
 535     }
 536
 537     private void requestSyncContacts() throws IOException {
 538         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.CONTACTS).build();
 539         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));
 540         try {
 541             sendMessage(message);
 542         } catch (EncapsulatedExceptions encapsulatedExceptions) {
 543             encapsulatedExceptions.printStackTrace();
 544         } catch (UntrustedIdentityException e) {
 545             e.printStackTrace();
 546         }
 547     }
 548
 549     private void sendMessage(SignalServiceSyncMessage message)
 550             throws IOException, EncapsulatedExceptions, UntrustedIdentityException {
 551         SignalServiceMessageSender messageSender = new SignalServiceMessageSender(URL, TRUST_STORE, username, password,
 552                 deviceId, signalProtocolStore, USER_AGENT, Optional.<SignalServiceMessageSender.EventListener>absent());
 553         messageSender.sendMessage(message);
 554     }
 555
 556     private void sendMessage(SignalServiceDataMessage message, Collection<String> recipients)
 557             throws IOException, EncapsulatedExceptions, UntrustedIdentityException {
 558         try {
 559             SignalServiceMessageSender messageSender = new SignalServiceMessageSender(URL, TRUST_STORE, username, password,
 560                     deviceId, signalProtocolStore, USER_AGENT, Optional.<SignalServiceMessageSender.EventListener>absent());
 561
 562             Set<SignalServiceAddress> recipientsTS = new HashSet<>(recipients.size());
 563             for (String recipient : recipients) {
 564                 try {
 565                     recipientsTS.add(getPushAddress(recipient));
 566                 } catch (InvalidNumberException e) {
 567                     System.err.println("Failed to add recipient \"" + recipient + "\": " + e.getMessage());
 568                     System.err.println("Aborting sending.");
 569                     save();
 570                     return;
 571                 }
 572             }
 573
 574             if (message.getGroupInfo().isPresent()) {
 575                 messageSender.sendMessage(new ArrayList<>(recipientsTS), message);
 576             } else {
 577                 // Send to all individually, so sync messages are sent correctly
 578                 for (SignalServiceAddress address : recipientsTS) {
 579                     messageSender.sendMessage(address, message);
 580                 }
 581             }
 582
 583             if (message.isEndSession()) {
 584                 for (SignalServiceAddress recipient : recipientsTS) {
 585                     handleEndSession(recipient.getNumber());
 586                 }
 587             }
 588         } finally {
 589             save();
 590         }
 591     }
 592
 593     private SignalServiceContent decryptMessage(SignalServiceEnvelope envelope) {
 594         SignalServiceCipher cipher = new SignalServiceCipher(new SignalServiceAddress(username), signalProtocolStore);
 595         try {
 596             return cipher.decrypt(envelope);
 597         } catch (Exception e) {
 598             // TODO handle all exceptions
 599             e.printStackTrace();
 600             return null;
 601         }
 602     }
 603
 604     private void handleEndSession(String source) {
 605         signalProtocolStore.deleteAllSessions(source);
 606     }
 607
 608     public interface ReceiveMessageHandler {
 609         void handleMessage(SignalServiceEnvelope envelope, SignalServiceContent decryptedContent, GroupInfo group);
 610     }
 611
 612     private GroupInfo handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, String source, String destination) {
 613         GroupInfo group = null;
 614         if (message.getGroupInfo().isPresent()) {
 615             SignalServiceGroup groupInfo = message.getGroupInfo().get();
 616             switch (groupInfo.getType()) {
 617                 case UPDATE:
 618                     try {
 619                         group = groupStore.getGroup(groupInfo.getGroupId());
 620                     } catch (GroupNotFoundException e) {
 621                         group = new GroupInfo(groupInfo.getGroupId());
 622                     }
 623
 624                     if (groupInfo.getAvatar().isPresent()) {
 625                         SignalServiceAttachment avatar = groupInfo.getAvatar().get();
 626                         if (avatar.isPointer()) {
 627                             long avatarId = avatar.asPointer().getId();
 628                             try {
 629                                 retrieveAttachment(avatar.asPointer());
 630                                 // TODO store group avatar in /avatar/groups folder
 631                                 group.avatarId = avatarId;
 632                             } catch (IOException | InvalidMessageException e) {
 633                                 System.err.println("Failed to retrieve group avatar (" + avatarId + "): " + e.getMessage());
 634                             }
 635                         }
 636                     }
 637
 638                     if (groupInfo.getName().isPresent()) {
 639                         group.name = groupInfo.getName().get();
 640                     }
 641
 642                     if (groupInfo.getMembers().isPresent()) {
 643                         group.members.addAll(groupInfo.getMembers().get());
 644                     }
 645
 646                     groupStore.updateGroup(group);
 647                     break;
 648                 case DELIVER:
 649                     try {
 650                         group = groupStore.getGroup(groupInfo.getGroupId());
 651                     } catch (GroupNotFoundException e) {
 652                     }
 653                     break;
 654                 case QUIT:
 655                     try {
 656                         group = groupStore.getGroup(groupInfo.getGroupId());
 657                         group.members.remove(source);
 658                         groupStore.updateGroup(group);
 659                     } catch (GroupNotFoundException e) {
 660                     }
 661                     break;
 662             }
 663         }
 664         if (message.isEndSession()) {
 665             handleEndSession(isSync ? destination : source);
 666         }
 667         if (message.getAttachments().isPresent()) {
 668             for (SignalServiceAttachment attachment : message.getAttachments().get()) {
 669                 if (attachment.isPointer()) {
 670                     try {
 671                         retrieveAttachment(attachment.asPointer());
 672                     } catch (IOException | InvalidMessageException e) {
 673                         System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
 674                     }
 675                 }
 676             }
 677         }
 678         return group;
 679     }
 680
 681     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 682         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(URL, TRUST_STORE, username, password, deviceId, signalingKey, USER_AGENT);
 683         SignalServiceMessagePipe messagePipe = null;
 684
 685         try {
 686             messagePipe = messageReceiver.createMessagePipe();
 687
 688             while (true) {
 689                 SignalServiceEnvelope envelope;
 690                 SignalServiceContent content = null;
 691                 GroupInfo group = null;
 692                 try {
 693                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 694                     if (!envelope.isReceipt()) {
 695                         content = decryptMessage(envelope);
 696                         if (content != null) {
 697                             if (content.getDataMessage().isPresent()) {
 698                                 SignalServiceDataMessage message = content.getDataMessage().get();
 699                                 group = handleSignalServiceDataMessage(message, false, envelope.getSource(), username);
 700                             }
 701                             if (content.getSyncMessage().isPresent()) {
 702                                 SignalServiceSyncMessage syncMessage = content.getSyncMessage().get();
 703                                 if (syncMessage.getSent().isPresent()) {
 704                                     SignalServiceDataMessage message = syncMessage.getSent().get().getMessage();
 705                                     group = handleSignalServiceDataMessage(message, true, envelope.getSource(), syncMessage.getSent().get().getDestination().get());
 706                                 }
 707                                 if (syncMessage.getRequest().isPresent()) {
 708                                     RequestMessage rm = syncMessage.getRequest().get();
 709                                     if (rm.isContactsRequest()) {
 710                                         // TODO implement when we have contacts
 711                                     }
 712                                     if (rm.isGroupsRequest()) {
 713                                         try {
 714                                             sendGroups();
 715                                         } catch (EncapsulatedExceptions encapsulatedExceptions) {
 716                                             encapsulatedExceptions.printStackTrace();
 717                                         } catch (UntrustedIdentityException e) {
 718                                             e.printStackTrace();
 719                                         }
 720                                     }
 721                                 }
 722                                 if (syncMessage.getGroups().isPresent()) {
 723                                     try {
 724                                         DeviceGroupsInputStream s = new DeviceGroupsInputStream(retrieveAttachmentAsStream(syncMessage.getGroups().get().asPointer()));
 725                                         DeviceGroup g;
 726                                         while ((g = s.read()) != null) {
 727                                             GroupInfo syncGroup;
 728                                             try {
 729                                                 syncGroup = groupStore.getGroup(g.getId());
 730                                             } catch (GroupNotFoundException e) {
 731                                                 syncGroup = new GroupInfo(g.getId());
 732                                             }
 733                                             if (g.getName().isPresent()) {
 734                                                 syncGroup.name = g.getName().get();
 735                                             }
 736                                             syncGroup.members.addAll(g.getMembers());
 737                                             syncGroup.active = g.isActive();
 738
 739                                             if (g.getAvatar().isPresent()) {
 740                                                 byte[] ava = new byte[(int) g.getAvatar().get().getLength()];
 741                                                 org.whispersystems.signalservice.internal.util.Util.readFully(g.getAvatar().get().getInputStream(), ava);
 742                                                 // TODO store group avatar in /avatar/groups folder
 743                                             }
 744                                             groupStore.updateGroup(syncGroup);
 745                                         }
 746                                     } catch (Exception e) {
 747                                         e.printStackTrace();
 748                                     }
 749                                 }
 750                                 if (syncMessage.getContacts().isPresent()) {
 751                                     try {
 752                                         DeviceContactsInputStream s = new DeviceContactsInputStream(retrieveAttachmentAsStream(syncMessage.getContacts().get().asPointer()));
 753                                         DeviceContact c;
 754                                         while ((c = s.read()) != null) {
 755                                             // TODO implement when we have contact storage
 756                                             if (c.getName().isPresent()) {
 757                                                 c.getName().get();
 758                                             }
 759                                             c.getNumber();
 760
 761                                             if (c.getAvatar().isPresent()) {
 762                                                 byte[] ava = new byte[(int) c.getAvatar().get().getLength()];
 763                                                 org.whispersystems.signalservice.internal.util.Util.readFully(c.getAvatar().get().getInputStream(), ava);
 764                                                 // TODO store contact avatar in /avatar/contacts folder
 765                                             }
 766                                         }
 767                                     } catch (Exception e) {
 768                                         e.printStackTrace();
 769                                     }
 770                                 }
 771                             }
 772                         }
 773                     }
 774                     save();
 775                     handler.handleMessage(envelope, content, group);
 776                 } catch (TimeoutException e) {
 777                     if (returnOnTimeout)
 778                         return;
 779                 } catch (InvalidVersionException e) {
 780                     System.err.println("Ignoring error: " + e.getMessage());
 781                 }
 782             }
 783         } finally {
 784             if (messagePipe != null)
 785                 messagePipe.shutdown();
 786         }
 787     }
 788
 789     public File getAttachmentFile(long attachmentId) {
 790         return new File(attachmentsPath, attachmentId + "");
 791     }
 792
 793     private File retrieveAttachment(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
 794         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(URL, TRUST_STORE, username, password, deviceId, signalingKey, USER_AGENT);
 795
 796         File tmpFile = File.createTempFile("ts_attach_" + pointer.getId(), ".tmp");
 797         InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile);
 798
 799         new File(attachmentsPath).mkdirs();
 800         File outputFile = getAttachmentFile(pointer.getId());
 801         OutputStream output = null;
 802         try {
 803             output = new FileOutputStream(outputFile);
 804             byte[] buffer = new byte[4096];
 805             int read;
 806
 807             while ((read = input.read(buffer)) != -1) {
 808                 output.write(buffer, 0, read);
 809             }
 810         } catch (FileNotFoundException e) {
 811             e.printStackTrace();
 812             return null;
 813         } finally {
 814             if (output != null) {
 815                 output.close();
 816                 output = null;
 817             }
 818             if (!tmpFile.delete()) {
 819                 System.err.println("Failed to delete temp file: " + tmpFile);
 820             }
 821         }
 822         if (pointer.getPreview().isPresent()) {
 823             File previewFile = new File(outputFile + ".preview");
 824             try {
 825                 output = new FileOutputStream(previewFile);
 826                 byte[] preview = pointer.getPreview().get();
 827                 output.write(preview, 0, preview.length);
 828             } catch (FileNotFoundException e) {
 829                 e.printStackTrace();
 830                 return null;
 831             } finally {
 832                 if (output != null) {
 833                     output.close();
 834                 }
 835             }
 836         }
 837         return outputFile;
 838     }
 839
 840     private InputStream retrieveAttachmentAsStream(SignalServiceAttachmentPointer pointer) throws IOException, InvalidMessageException {
 841         final SignalServiceMessageReceiver messageReceiver = new SignalServiceMessageReceiver(URL, TRUST_STORE, username, password, deviceId, signalingKey, USER_AGENT);
 842         File file = File.createTempFile("ts_tmp", "tmp");
 843         file.deleteOnExit();
 844
 845         return messageReceiver.retrieveAttachment(pointer, file);
 846     }
 847
 848     private String canonicalizeNumber(String number) throws InvalidNumberException {
 849         String localNumber = username;
 850         return PhoneNumberFormatter.formatNumber(number, localNumber);
 851     }
 852
 853     private SignalServiceAddress getPushAddress(String number) throws InvalidNumberException {
 854         String e164number = canonicalizeNumber(number);
 855         return new SignalServiceAddress(e164number);
 856     }
 857
 858     @Override
 859     public boolean isRemote() {
 860         return false;
 861     }
 862
 863     private void sendGroups() throws IOException, EncapsulatedExceptions, UntrustedIdentityException {
 864         File contactsFile = File.createTempFile("multidevice-contact-update", ".tmp");
 865
 866         try {
 867             DeviceGroupsOutputStream out = new DeviceGroupsOutputStream(new FileOutputStream(contactsFile));
 868             try {
 869                 for (GroupInfo record : groupStore.getGroups()) {
 870                     out.write(new DeviceGroup(record.groupId, Optional.fromNullable(record.name),
 871                             new ArrayList<>(record.members), Optional.of(new SignalServiceAttachmentStream(new FileInputStream("/home/sebastian/Bilder/00026_150512_14-00-18.JPG"), "octet", new File("/home/sebastian/Bilder/00026_150512_14-00-18.JPG").length(), null)),
 872                             record.active));
 873                 }
 874             } finally {
 875                 out.close();
 876             }
 877
 878             if (contactsFile.exists() && contactsFile.length() > 0) {
 879                 FileInputStream contactsFileStream = new FileInputStream(contactsFile);
 880                 SignalServiceAttachmentStream attachmentStream = SignalServiceAttachment.newStreamBuilder()
 881                         .withStream(contactsFileStream)
 882                         .withContentType("application/octet-stream")
 883                         .withLength(contactsFile.length())
 884                         .build();
 885
 886                 sendMessage(SignalServiceSyncMessage.forGroups(attachmentStream));
 887             }
 888         } finally {
 889             if (contactsFile != null) contactsFile.delete();
 890         }
 891     }
 892 }