nmode's Git Repositories - signal-cli/blob - src/main/java/cli/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 cli;
  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.whispersystems.libaxolotl.*;
  27 import org.whispersystems.libaxolotl.ecc.Curve;
  28 import org.whispersystems.libaxolotl.ecc.ECKeyPair;
  29 import org.whispersystems.libaxolotl.state.PreKeyRecord;
  30 import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;
  31 import org.whispersystems.libaxolotl.util.KeyHelper;
  32 import org.whispersystems.libaxolotl.util.Medium;
  33 import org.whispersystems.libaxolotl.util.guava.Optional;
  34 import org.whispersystems.textsecure.api.TextSecureAccountManager;
  35 import org.whispersystems.textsecure.api.TextSecureMessagePipe;
  36 import org.whispersystems.textsecure.api.TextSecureMessageReceiver;
  37 import org.whispersystems.textsecure.api.TextSecureMessageSender;
  38 import org.whispersystems.textsecure.api.crypto.TextSecureCipher;
  39 import org.whispersystems.textsecure.api.messages.*;
  40 import org.whispersystems.textsecure.api.push.TextSecureAddress;
  41 import org.whispersystems.textsecure.api.push.TrustStore;
  42 import org.whispersystems.textsecure.api.push.exceptions.EncapsulatedExceptions;
  43 import org.whispersystems.textsecure.api.util.InvalidNumberException;
  44 import org.whispersystems.textsecure.api.util.PhoneNumberFormatter;
  45
  46 import java.io.*;
  47 import java.util.*;
  48 import java.util.concurrent.TimeUnit;
  49 import java.util.concurrent.TimeoutException;
  50
  51 class Manager {
  52     private final static String URL = "https://textsecure-service.whispersystems.org";
  53     private final static TrustStore TRUST_STORE = new WhisperTrustStore();
  54
  55     public final static String PROJECT_NAME = Manager.class.getPackage().getImplementationTitle();
  56     public final static String PROJECT_VERSION = Manager.class.getPackage().getImplementationVersion();
  57     private final static String USER_AGENT = PROJECT_NAME + " " + PROJECT_VERSION;
  58
  59     private final static String settingsPath = System.getProperty("user.home") + "/.config/textsecure";
  60     private final static String dataPath = settingsPath + "/data";
  61     private final static String attachmentsPath = settingsPath + "/attachments";
  62
  63     private final ObjectMapper jsonProcessot = new ObjectMapper();
  64     private String username;
  65     private String password;
  66     private String signalingKey;
  67     private int preKeyIdOffset;
  68     private int nextSignedPreKeyId;
  69
  70     private boolean registered = false;
  71
  72     private JsonAxolotlStore axolotlStore;
  73     private TextSecureAccountManager accountManager;
  74     private JsonGroupStore groupStore;
  75
  76     public Manager(String username) {
  77         this.username = username;
  78         jsonProcessot.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.NONE); // disable autodetect
  79         jsonProcessot.enable(SerializationFeature.INDENT_OUTPUT); // for pretty print, you can disable it.
  80         jsonProcessot.enable(SerializationFeature.WRITE_NULL_MAP_VALUES);
  81         jsonProcessot.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
  82     }
  83
  84     public String getFileName() {
  85         new File(dataPath).mkdirs();
  86         return dataPath + "/" + username;
  87     }
  88
  89     public boolean userExists() {
  90         File f = new File(getFileName());
  91         return !(!f.exists() || f.isDirectory());
  92     }
  93
  94     public boolean userHasKeys() {
  95         return axolotlStore != null;
  96     }
  97
  98     private JsonNode getNotNullNode(JsonNode parent, String name) throws InvalidObjectException {
  99         JsonNode node = parent.get(name);
 100         if (node == null) {
 101             throw new InvalidObjectException(String.format("Incorrect file format: expected parameter %s not found ", name));
 102         }
 103
 104         return node;
 105     }
 106
 107     public void load() throws IOException, InvalidKeyException {
 108         JsonNode rootNode = jsonProcessot.readTree(new File(getFileName()));
 109
 110         username = getNotNullNode(rootNode, "username").asText();
 111         password = getNotNullNode(rootNode, "password").asText();
 112         if (rootNode.has("signalingKey")) {
 113             signalingKey = getNotNullNode(rootNode, "signalingKey").asText();
 114         }
 115         if (rootNode.has("preKeyIdOffset")) {
 116             preKeyIdOffset = getNotNullNode(rootNode, "preKeyIdOffset").asInt(0);
 117         } else {
 118             preKeyIdOffset = 0;
 119         }
 120         if (rootNode.has("nextSignedPreKeyId")) {
 121             nextSignedPreKeyId = getNotNullNode(rootNode, "nextSignedPreKeyId").asInt();
 122         } else {
 123             nextSignedPreKeyId = 0;
 124         }
 125         axolotlStore = jsonProcessot.convertValue(getNotNullNode(rootNode, "axolotlStore"), JsonAxolotlStore.class); //new JsonAxolotlStore(in.getJSONObject("axolotlStore"));
 126         registered = getNotNullNode(rootNode, "registered").asBoolean();
 127         JsonNode groupStoreNode = rootNode.get("groupStore");
 128         if (groupStoreNode != null) {
 129             groupStore = jsonProcessot.convertValue(groupStoreNode, JsonGroupStore.class);
 130         }
 131         if (groupStore == null) {
 132             groupStore = new JsonGroupStore();
 133         }
 134         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 135     }
 136
 137     public void save() {
 138         ObjectNode rootNode = jsonProcessot.createObjectNode();
 139         rootNode.put("username", username)
 140                 .put("password", password)
 141                 .put("signalingKey", signalingKey)
 142                 .put("preKeyIdOffset", preKeyIdOffset)
 143                 .put("nextSignedPreKeyId", nextSignedPreKeyId)
 144                 .put("registered", registered)
 145                 .putPOJO("axolotlStore", axolotlStore)
 146                 .putPOJO("groupStore", groupStore)
 147         ;
 148         try {
 149             jsonProcessot.writeValue(new File(getFileName()), rootNode);
 150         } catch (Exception e) {
 151             System.err.println(String.format("Error saving file: %s", e.getMessage()));
 152         }
 153     }
 154
 155     public void createNewIdentity() {
 156         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 157         int registrationId = KeyHelper.generateRegistrationId(false);
 158         axolotlStore = new JsonAxolotlStore(identityKey, registrationId);
 159         groupStore = new JsonGroupStore();
 160         registered = false;
 161     }
 162
 163     public boolean isRegistered() {
 164         return registered;
 165     }
 166
 167     public void register(boolean voiceVerication) throws IOException {
 168         password = Util.getSecret(18);
 169
 170         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 171
 172         if (voiceVerication)
 173             accountManager.requestVoiceVerificationCode();
 174         else
 175             accountManager.requestSmsVerificationCode();
 176
 177         registered = false;
 178     }
 179
 180     private static final int BATCH_SIZE = 100;
 181
 182     private List<PreKeyRecord> generatePreKeys() {
 183         List<PreKeyRecord> records = new LinkedList<>();
 184
 185         for (int i = 0; i < BATCH_SIZE; i++) {
 186             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 187             ECKeyPair keyPair = Curve.generateKeyPair();
 188             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 189
 190             axolotlStore.storePreKey(preKeyId, record);
 191             records.add(record);
 192         }
 193
 194         preKeyIdOffset = (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE;
 195         return records;
 196     }
 197
 198     private PreKeyRecord generateLastResortPreKey() {
 199         if (axolotlStore.containsPreKey(Medium.MAX_VALUE)) {
 200             try {
 201                 return axolotlStore.loadPreKey(Medium.MAX_VALUE);
 202             } catch (InvalidKeyIdException e) {
 203                 axolotlStore.removePreKey(Medium.MAX_VALUE);
 204             }
 205         }
 206
 207         ECKeyPair keyPair = Curve.generateKeyPair();
 208         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 209
 210         axolotlStore.storePreKey(Medium.MAX_VALUE, record);
 211
 212         return record;
 213     }
 214
 215     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 216         try {
 217             ECKeyPair keyPair = Curve.generateKeyPair();
 218             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 219             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 220
 221             axolotlStore.storeSignedPreKey(nextSignedPreKeyId, record);
 222             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 223
 224             return record;
 225         } catch (InvalidKeyException e) {
 226             throw new AssertionError(e);
 227         }
 228     }
 229
 230     public void verifyAccount(String verificationCode) throws IOException {
 231         verificationCode = verificationCode.replace("-", "");
 232         signalingKey = Util.getSecret(52);
 233         accountManager.verifyAccountWithCode(verificationCode, signalingKey, axolotlStore.getLocalRegistrationId(), false);
 234
 235         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 236         registered = true;
 237
 238         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 239
 240         PreKeyRecord lastResortKey = generateLastResortPreKey();
 241
 242         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(axolotlStore.getIdentityKeyPair());
 243
 244         accountManager.setPreKeys(axolotlStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 245     }
 246
 247     public void sendMessage(List<String> recipients, TextSecureDataMessage message)
 248             throws IOException, EncapsulatedExceptions {
 249         TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, username, password,
 250                 axolotlStore, USER_AGENT, Optional.<TextSecureMessageSender.EventListener>absent());
 251
 252         Set<TextSecureAddress> recipientsTS = new HashSet<>(recipients.size());
 253         for (String recipient : recipients) {
 254             try {
 255                 recipientsTS.add(getPushAddress(recipient));
 256             } catch (InvalidNumberException e) {
 257                 System.err.println("Failed to add recipient \"" + recipient + "\": " + e.getMessage());
 258                 System.err.println("Aborting sending.");
 259                 return;
 260             }
 261         }
 262
 263         messageSender.sendMessage(new ArrayList<>(recipientsTS), message);
 264
 265         if (message.isEndSession()) {
 266             for (TextSecureAddress recipient : recipientsTS) {
 267                 handleEndSession(recipient.getNumber());
 268             }
 269         }
 270     }
 271
 272     private TextSecureContent decryptMessage(TextSecureEnvelope envelope) {
 273         TextSecureCipher cipher = new TextSecureCipher(new TextSecureAddress(username), axolotlStore);
 274         try {
 275             return cipher.decrypt(envelope);
 276         } catch (Exception e) {
 277             // TODO handle all exceptions
 278             e.printStackTrace();
 279             return null;
 280         }
 281     }
 282
 283     private void handleEndSession(String source) {
 284         axolotlStore.deleteAllSessions(source);
 285     }
 286
 287     public interface ReceiveMessageHandler {
 288         void handleMessage(TextSecureEnvelope envelope, TextSecureContent decryptedContent, GroupInfo group);
 289     }
 290
 291     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 292         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 293         TextSecureMessagePipe messagePipe = null;
 294
 295         try {
 296             messagePipe = messageReceiver.createMessagePipe();
 297
 298             while (true) {
 299                 TextSecureEnvelope envelope;
 300                 TextSecureContent content = null;
 301                 GroupInfo group = null;
 302                 try {
 303                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 304                     if (!envelope.isReceipt()) {
 305                         content = decryptMessage(envelope);
 306                         if (content != null) {
 307                             if (content.getDataMessage().isPresent()) {
 308                                 TextSecureDataMessage message = content.getDataMessage().get();
 309                                 if (message.getGroupInfo().isPresent()) {
 310                                     TextSecureGroup groupInfo = message.getGroupInfo().get();
 311                                     switch (groupInfo.getType()) {
 312                                         case UPDATE:
 313                                             group = groupStore.getGroup(groupInfo.getGroupId());
 314                                             if (group == null) {
 315                                                 group = new GroupInfo(groupInfo.getGroupId());
 316                                             }
 317
 318                                             if (groupInfo.getAvatar().isPresent()) {
 319                                                 TextSecureAttachment avatar = groupInfo.getAvatar().get();
 320                                                 if (avatar.isPointer()) {
 321                                                     long avatarId = avatar.asPointer().getId();
 322                                                     try {
 323                                                         retrieveAttachment(avatar.asPointer());
 324                                                         group.avatarId = avatarId;
 325                                                     } catch (IOException | InvalidMessageException e) {
 326                                                         System.err.println("Failed to retrieve group avatar (" + avatarId + "): " + e.getMessage());
 327                                                     }
 328                                                 }
 329                                             }
 330
 331                                             if (groupInfo.getName().isPresent()) {
 332                                                 group.name = groupInfo.getName().get();
 333                                             }
 334
 335                                             if (groupInfo.getMembers().isPresent()) {
 336                                                 group.members.addAll(groupInfo.getMembers().get());
 337                                             }
 338
 339                                             groupStore.updateGroup(group);
 340                                             break;
 341                                         case DELIVER:
 342                                             group = groupStore.getGroup(groupInfo.getGroupId());
 343                                             break;
 344                                         case QUIT:
 345                                             group = groupStore.getGroup(groupInfo.getGroupId());
 346                                             if (group != null) {
 347                                                 group.members.remove(envelope.getSource());
 348                                             }
 349                                             break;
 350                                     }
 351                                 }
 352                                 if (message.isEndSession()) {
 353                                     handleEndSession(envelope.getSource());
 354                                 }
 355                                 if (message.getAttachments().isPresent()) {
 356                                     for (TextSecureAttachment attachment : message.getAttachments().get()) {
 357                                         if (attachment.isPointer()) {
 358                                             try {
 359                                                 retrieveAttachment(attachment.asPointer());
 360                                             } catch (IOException | InvalidMessageException e) {
 361                                                 System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
 362                                             }
 363                                         }
 364                                     }
 365                                 }
 366                             }
 367                         }
 368                     }
 369                     handler.handleMessage(envelope, content, group);
 370                 } catch (TimeoutException e) {
 371                     if (returnOnTimeout)
 372                         return;
 373                 } catch (InvalidVersionException e) {
 374                     System.err.println("Ignoring error: " + e.getMessage());
 375                 }
 376                 save();
 377             }
 378         } finally {
 379             if (messagePipe != null)
 380                 messagePipe.shutdown();
 381         }
 382     }
 383
 384     public File getAttachmentFile(long attachmentId) {
 385         return new File(attachmentsPath + "/" + attachmentId);
 386     }
 387
 388     private File retrieveAttachment(TextSecureAttachmentPointer pointer) throws IOException, InvalidMessageException {
 389         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 390
 391         File tmpFile = File.createTempFile("ts_attach_" + pointer.getId(), ".tmp");
 392         InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile);
 393
 394         new File(attachmentsPath).mkdirs();
 395         File outputFile = getAttachmentFile(pointer.getId());
 396         OutputStream output = null;
 397         try {
 398             output = new FileOutputStream(outputFile);
 399             byte[] buffer = new byte[4096];
 400             int read;
 401
 402             while ((read = input.read(buffer)) != -1) {
 403                 output.write(buffer, 0, read);
 404             }
 405         } catch (FileNotFoundException e) {
 406             e.printStackTrace();
 407             return null;
 408         } finally {
 409             if (output != null) {
 410                 output.close();
 411                 output = null;
 412             }
 413             if (!tmpFile.delete()) {
 414                 System.err.println("Failed to delete temp file: " + tmpFile);
 415             }
 416         }
 417         if (pointer.getPreview().isPresent()) {
 418             File previewFile = new File(outputFile + ".preview");
 419             try {
 420                 output = new FileOutputStream(previewFile);
 421                 byte[] preview = pointer.getPreview().get();
 422                 output.write(preview, 0, preview.length);
 423             } catch (FileNotFoundException e) {
 424                 e.printStackTrace();
 425                 return null;
 426             } finally {
 427                 if (output != null) {
 428                     output.close();
 429                 }
 430             }
 431         }
 432         return outputFile;
 433     }
 434
 435     public String canonicalizeNumber(String number) throws InvalidNumberException {
 436         String localNumber = username;
 437         return PhoneNumberFormatter.formatNumber(number, localNumber);
 438     }
 439
 440     private TextSecureAddress getPushAddress(String number) throws InvalidNumberException {
 441         String e164number = canonicalizeNumber(number);
 442         return new TextSecureAddress(e164number);
 443     }
 444
 445     public GroupInfo getGroupInfo(byte[] groupId) {
 446         return groupStore.getGroup(groupId);
 447     }
 448
 449     public void setGroupInfo(GroupInfo group) {
 450         groupStore.updateGroup(group);
 451     }
 452
 453     public String getUsername() {
 454         return username;
 455     }
 456 }