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         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 132     }
 133
 134     public void save() {
 135         ObjectNode rootNode = jsonProcessot.createObjectNode();
 136         rootNode.put("username", username)
 137                 .put("password", password)
 138                 .put("signalingKey", signalingKey)
 139                 .put("preKeyIdOffset", preKeyIdOffset)
 140                 .put("nextSignedPreKeyId", nextSignedPreKeyId)
 141                 .put("registered", registered)
 142                 .putPOJO("axolotlStore", axolotlStore)
 143                 .putPOJO("groupStore", groupStore)
 144         ;
 145         try {
 146             jsonProcessot.writeValue(new File(getFileName()), rootNode);
 147         } catch (Exception e) {
 148             System.err.println(String.format("Error saving file: %s", e.getMessage()));
 149         }
 150     }
 151
 152     public void createNewIdentity() {
 153         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 154         int registrationId = KeyHelper.generateRegistrationId(false);
 155         axolotlStore = new JsonAxolotlStore(identityKey, registrationId);
 156         groupStore = new JsonGroupStore();
 157         registered = false;
 158     }
 159
 160     public boolean isRegistered() {
 161         return registered;
 162     }
 163
 164     public void register(boolean voiceVerication) throws IOException {
 165         password = Util.getSecret(18);
 166
 167         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 168
 169         if (voiceVerication)
 170             accountManager.requestVoiceVerificationCode();
 171         else
 172             accountManager.requestSmsVerificationCode();
 173
 174         registered = false;
 175     }
 176
 177     private static final int BATCH_SIZE = 100;
 178
 179     private List<PreKeyRecord> generatePreKeys() {
 180         List<PreKeyRecord> records = new LinkedList<>();
 181
 182         for (int i = 0; i < BATCH_SIZE; i++) {
 183             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 184             ECKeyPair keyPair = Curve.generateKeyPair();
 185             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 186
 187             axolotlStore.storePreKey(preKeyId, record);
 188             records.add(record);
 189         }
 190
 191         preKeyIdOffset = (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE;
 192         return records;
 193     }
 194
 195     private PreKeyRecord generateLastResortPreKey() {
 196         if (axolotlStore.containsPreKey(Medium.MAX_VALUE)) {
 197             try {
 198                 return axolotlStore.loadPreKey(Medium.MAX_VALUE);
 199             } catch (InvalidKeyIdException e) {
 200                 axolotlStore.removePreKey(Medium.MAX_VALUE);
 201             }
 202         }
 203
 204         ECKeyPair keyPair = Curve.generateKeyPair();
 205         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 206
 207         axolotlStore.storePreKey(Medium.MAX_VALUE, record);
 208
 209         return record;
 210     }
 211
 212     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 213         try {
 214             ECKeyPair keyPair = Curve.generateKeyPair();
 215             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 216             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 217
 218             axolotlStore.storeSignedPreKey(nextSignedPreKeyId, record);
 219             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 220
 221             return record;
 222         } catch (InvalidKeyException e) {
 223             throw new AssertionError(e);
 224         }
 225     }
 226
 227     public void verifyAccount(String verificationCode) throws IOException {
 228         verificationCode = verificationCode.replace("-", "");
 229         signalingKey = Util.getSecret(52);
 230         accountManager.verifyAccountWithCode(verificationCode, signalingKey, axolotlStore.getLocalRegistrationId(), false);
 231
 232         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 233         registered = true;
 234
 235         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 236
 237         PreKeyRecord lastResortKey = generateLastResortPreKey();
 238
 239         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(axolotlStore.getIdentityKeyPair());
 240
 241         accountManager.setPreKeys(axolotlStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 242     }
 243
 244     public void sendMessage(List<String> recipients, TextSecureDataMessage message)
 245             throws IOException, EncapsulatedExceptions {
 246         TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, username, password,
 247                 axolotlStore, USER_AGENT, Optional.<TextSecureMessageSender.EventListener>absent());
 248
 249         Set<TextSecureAddress> recipientsTS = new HashSet<>(recipients.size());
 250         for (String recipient : recipients) {
 251             try {
 252                 recipientsTS.add(getPushAddress(recipient));
 253             } catch (InvalidNumberException e) {
 254                 System.err.println("Failed to add recipient \"" + recipient + "\": " + e.getMessage());
 255                 System.err.println("Aborting sending.");
 256                 return;
 257             }
 258         }
 259
 260         messageSender.sendMessage(new ArrayList<>(recipientsTS), message);
 261
 262         if (message.isEndSession()) {
 263             for (TextSecureAddress recipient : recipientsTS) {
 264                 handleEndSession(recipient.getNumber());
 265             }
 266         }
 267     }
 268
 269     private TextSecureContent decryptMessage(TextSecureEnvelope envelope) {
 270         TextSecureCipher cipher = new TextSecureCipher(new TextSecureAddress(username), axolotlStore);
 271         try {
 272             return cipher.decrypt(envelope);
 273         } catch (Exception e) {
 274             // TODO handle all exceptions
 275             e.printStackTrace();
 276             return null;
 277         }
 278     }
 279
 280     private void handleEndSession(String source) {
 281         axolotlStore.deleteAllSessions(source);
 282     }
 283
 284     public interface ReceiveMessageHandler {
 285         void handleMessage(TextSecureEnvelope envelope, TextSecureContent decryptedContent, GroupInfo group);
 286     }
 287
 288     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 289         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 290         TextSecureMessagePipe messagePipe = null;
 291
 292         try {
 293             messagePipe = messageReceiver.createMessagePipe();
 294
 295             while (true) {
 296                 TextSecureEnvelope envelope;
 297                 TextSecureContent content = null;
 298                 GroupInfo group = null;
 299                 try {
 300                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 301                     if (!envelope.isReceipt()) {
 302                         content = decryptMessage(envelope);
 303                         if (content != null) {
 304                             if (content.getDataMessage().isPresent()) {
 305                                 TextSecureDataMessage message = content.getDataMessage().get();
 306                                 if (message.getGroupInfo().isPresent()) {
 307                                     TextSecureGroup groupInfo = message.getGroupInfo().get();
 308                                     switch (groupInfo.getType()) {
 309                                         case UPDATE:
 310                                             group = groupStore.getGroup(groupInfo.getGroupId());
 311                                             if (group == null) {
 312                                                 group = new GroupInfo(groupInfo.getGroupId());
 313                                             }
 314
 315                                             if (groupInfo.getAvatar().isPresent()) {
 316                                                 TextSecureAttachment avatar = groupInfo.getAvatar().get();
 317                                                 if (avatar.isPointer()) {
 318                                                     long avatarId = avatar.asPointer().getId();
 319                                                     try {
 320                                                         retrieveAttachment(avatar.asPointer());
 321                                                         group.avatarId = avatarId;
 322                                                     } catch (IOException | InvalidMessageException e) {
 323                                                         System.err.println("Failed to retrieve group avatar (" + avatarId + "): " + e.getMessage());
 324                                                     }
 325                                                 }
 326                                             }
 327
 328                                             if (groupInfo.getName().isPresent()) {
 329                                                 group.name = groupInfo.getName().get();
 330                                             }
 331
 332                                             if (groupInfo.getMembers().isPresent()) {
 333                                                 group.members.addAll(groupInfo.getMembers().get());
 334                                             }
 335
 336                                             groupStore.updateGroup(group);
 337                                             break;
 338                                         case DELIVER:
 339                                             group = groupStore.getGroup(groupInfo.getGroupId());
 340                                             break;
 341                                         case QUIT:
 342                                             group = groupStore.getGroup(groupInfo.getGroupId());
 343                                             if (group != null) {
 344                                                 group.members.remove(envelope.getSource());
 345                                             }
 346                                             break;
 347                                     }
 348                                 }
 349                                 if (message.isEndSession()) {
 350                                     handleEndSession(envelope.getSource());
 351                                 }
 352                                 if (message.getAttachments().isPresent()) {
 353                                     for (TextSecureAttachment attachment : message.getAttachments().get()) {
 354                                         if (attachment.isPointer()) {
 355                                             try {
 356                                                 retrieveAttachment(attachment.asPointer());
 357                                             } catch (IOException | InvalidMessageException e) {
 358                                                 System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
 359                                             }
 360                                         }
 361                                     }
 362                                 }
 363                             }
 364                         }
 365                     }
 366                     handler.handleMessage(envelope, content, group);
 367                 } catch (TimeoutException e) {
 368                     if (returnOnTimeout)
 369                         return;
 370                 } catch (InvalidVersionException e) {
 371                     System.err.println("Ignoring error: " + e.getMessage());
 372                 }
 373                 save();
 374             }
 375         } finally {
 376             if (messagePipe != null)
 377                 messagePipe.shutdown();
 378         }
 379     }
 380
 381     public File getAttachmentFile(long attachmentId) {
 382         return new File(attachmentsPath + "/" + attachmentId);
 383     }
 384
 385     private File retrieveAttachment(TextSecureAttachmentPointer pointer) throws IOException, InvalidMessageException {
 386         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 387
 388         File tmpFile = File.createTempFile("ts_attach_" + pointer.getId(), ".tmp");
 389         InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile);
 390
 391         new File(attachmentsPath).mkdirs();
 392         File outputFile = getAttachmentFile(pointer.getId());
 393         OutputStream output = null;
 394         try {
 395             output = new FileOutputStream(outputFile);
 396             byte[] buffer = new byte[4096];
 397             int read;
 398
 399             while ((read = input.read(buffer)) != -1) {
 400                 output.write(buffer, 0, read);
 401             }
 402         } catch (FileNotFoundException e) {
 403             e.printStackTrace();
 404             return null;
 405         } finally {
 406             if (output != null) {
 407                 output.close();
 408                 output = null;
 409             }
 410             if (!tmpFile.delete()) {
 411                 System.err.println("Failed to delete temp file: " + tmpFile);
 412             }
 413         }
 414         if (pointer.getPreview().isPresent()) {
 415             File previewFile = new File(outputFile + ".preview");
 416             try {
 417                 output = new FileOutputStream(previewFile);
 418                 byte[] preview = pointer.getPreview().get();
 419                 output.write(preview, 0, preview.length);
 420             } catch (FileNotFoundException e) {
 421                 e.printStackTrace();
 422                 return null;
 423             } finally {
 424                 if (output != null) {
 425                     output.close();
 426                 }
 427             }
 428         }
 429         return outputFile;
 430     }
 431
 432     public String canonicalizeNumber(String number) throws InvalidNumberException {
 433         String localNumber = username;
 434         return PhoneNumberFormatter.formatNumber(number, localNumber);
 435     }
 436
 437     private TextSecureAddress getPushAddress(String number) throws InvalidNumberException {
 438         String e164number = canonicalizeNumber(number);
 439         return new TextSecureAddress(e164number);
 440     }
 441
 442     public GroupInfo getGroupInfo(byte[] groupId) {
 443         return groupStore.getGroup(groupId);
 444     }
 445
 446     public void setGroupInfo(GroupInfo group) {
 447         groupStore.updateGroup(group);
 448     }
 449
 450     public String getUsername() {
 451         return username;
 452     }
 453 }