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