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.TextSecureAttachmentPointer;
  40 import org.whispersystems.textsecure.api.messages.TextSecureContent;
  41 import org.whispersystems.textsecure.api.messages.TextSecureDataMessage;
  42 import org.whispersystems.textsecure.api.messages.TextSecureEnvelope;
  43 import org.whispersystems.textsecure.api.push.TextSecureAddress;
  44 import org.whispersystems.textsecure.api.push.TrustStore;
  45 import org.whispersystems.textsecure.api.push.exceptions.EncapsulatedExceptions;
  46 import org.whispersystems.textsecure.api.util.InvalidNumberException;
  47 import org.whispersystems.textsecure.api.util.PhoneNumberFormatter;
  48
  49 import java.io.*;
  50 import java.util.LinkedList;
  51 import java.util.List;
  52 import java.util.concurrent.TimeUnit;
  53 import java.util.concurrent.TimeoutException;
  54
  55 class Manager {
  56     private final static String URL = "https://textsecure-service.whispersystems.org";
  57     private final static TrustStore TRUST_STORE = new WhisperTrustStore();
  58
  59     public final static String PROJECT_NAME = Manager.class.getPackage().getImplementationTitle();
  60     public final static String PROJECT_VERSION = Manager.class.getPackage().getImplementationVersion();
  61     private final static String USER_AGENT = PROJECT_NAME + " " + PROJECT_VERSION;
  62
  63     private final static String settingsPath = System.getProperty("user.home") + "/.config/textsecure";
  64     private final static String dataPath = settingsPath + "/data";
  65     private final static String attachmentsPath = settingsPath + "/attachments";
  66
  67     private final ObjectMapper jsonProcessot = new ObjectMapper();
  68     private String username;
  69     private String password;
  70     private String signalingKey;
  71     private int preKeyIdOffset;
  72     private int nextSignedPreKeyId;
  73
  74     private boolean registered = false;
  75
  76     private JsonAxolotlStore axolotlStore;
  77     private TextSecureAccountManager accountManager;
  78
  79     public Manager(String username) {
  80         this.username = username;
  81         jsonProcessot.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.NONE); // disable autodetect
  82         jsonProcessot.enable(SerializationFeature.INDENT_OUTPUT); // for pretty print, you can disable it.
  83         jsonProcessot.enable(SerializationFeature.WRITE_NULL_MAP_VALUES);
  84         jsonProcessot.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
  85     }
  86
  87     public String getFileName() {
  88         new File(dataPath).mkdirs();
  89         return dataPath + "/" + username;
  90     }
  91
  92     public boolean userExists() {
  93         File f = new File(getFileName());
  94         return !(!f.exists() || f.isDirectory());
  95     }
  96
  97     public boolean userHasKeys() {
  98         return axolotlStore != null;
  99     }
 100
 101     private JsonNode getNotNullNode(JsonNode parent, String name) throws InvalidObjectException {
 102         JsonNode node = parent.get(name);
 103         if (node == null) {
 104             throw new InvalidObjectException(String.format("Incorrect file format: expected parameter %s not found ", name));
 105         }
 106
 107         return node;
 108     }
 109
 110
 111     public void load() throws IOException, InvalidKeyException {
 112         JsonNode rootNode = jsonProcessot.readTree(new File(getFileName()));
 113
 114         username = getNotNullNode(rootNode, "username").asText();
 115         password = getNotNullNode(rootNode, "password").asText();
 116         if (rootNode.has("signalingKey")) {
 117             signalingKey = getNotNullNode(rootNode, "signalingKey").asText();
 118         }
 119         if (rootNode.has("preKeyIdOffset")) {
 120             preKeyIdOffset = getNotNullNode(rootNode, "preKeyIdOffset").asInt(0);
 121         } else {
 122             preKeyIdOffset = 0;
 123         }
 124         if (rootNode.has("nextSignedPreKeyId")) {
 125             nextSignedPreKeyId = getNotNullNode(rootNode, "nextSignedPreKeyId").asInt();
 126         } else {
 127             nextSignedPreKeyId = 0;
 128         }
 129         axolotlStore = jsonProcessot.convertValue(getNotNullNode(rootNode, "axolotlStore"), JsonAxolotlStore.class); //new JsonAxolotlStore(in.getJSONObject("axolotlStore"));
 130         registered = getNotNullNode(rootNode, "registered").asBoolean();
 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         ;
 144         try {
 145             jsonProcessot.writeValue(new File(getFileName()), rootNode);
 146         } catch (Exception e) {
 147             System.err.println(String.format("Error saving file: %s", e.getMessage()));
 148         }
 149     }
 150
 151     public void createNewIdentity() {
 152         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 153         int registrationId = KeyHelper.generateRegistrationId(false);
 154         axolotlStore = new JsonAxolotlStore(identityKey, registrationId);
 155         registered = false;
 156     }
 157
 158     public boolean isRegistered() {
 159         return registered;
 160     }
 161
 162     public void register(boolean voiceVerication) throws IOException {
 163         password = Util.getSecret(18);
 164
 165         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 166
 167         if (voiceVerication)
 168             accountManager.requestVoiceVerificationCode();
 169         else
 170             accountManager.requestSmsVerificationCode();
 171
 172         registered = false;
 173     }
 174
 175     private static final int BATCH_SIZE = 100;
 176
 177     private List<PreKeyRecord> generatePreKeys() {
 178         List<PreKeyRecord> records = new LinkedList<>();
 179
 180         for (int i = 0; i < BATCH_SIZE; i++) {
 181             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 182             ECKeyPair keyPair = Curve.generateKeyPair();
 183             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 184
 185             axolotlStore.storePreKey(preKeyId, record);
 186             records.add(record);
 187         }
 188
 189         preKeyIdOffset = (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE;
 190         return records;
 191     }
 192
 193     private PreKeyRecord generateLastResortPreKey() {
 194         if (axolotlStore.containsPreKey(Medium.MAX_VALUE)) {
 195             try {
 196                 return axolotlStore.loadPreKey(Medium.MAX_VALUE);
 197             } catch (InvalidKeyIdException e) {
 198                 axolotlStore.removePreKey(Medium.MAX_VALUE);
 199             }
 200         }
 201
 202         ECKeyPair keyPair = Curve.generateKeyPair();
 203         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 204
 205         axolotlStore.storePreKey(Medium.MAX_VALUE, record);
 206
 207         return record;
 208     }
 209
 210     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 211         try {
 212             ECKeyPair keyPair = Curve.generateKeyPair();
 213             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 214             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 215
 216             axolotlStore.storeSignedPreKey(nextSignedPreKeyId, record);
 217             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 218
 219             return record;
 220         } catch (InvalidKeyException e) {
 221             throw new AssertionError(e);
 222         }
 223     }
 224
 225     public void verifyAccount(String verificationCode) throws IOException {
 226         verificationCode = verificationCode.replace("-", "");
 227         signalingKey = Util.getSecret(52);
 228         accountManager.verifyAccountWithCode(verificationCode, signalingKey, axolotlStore.getLocalRegistrationId(), false);
 229
 230         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 231         registered = true;
 232
 233         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 234
 235         PreKeyRecord lastResortKey = generateLastResortPreKey();
 236
 237         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(axolotlStore.getIdentityKeyPair());
 238
 239         accountManager.setPreKeys(axolotlStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 240     }
 241
 242     public void sendMessage(List<TextSecureAddress> recipients, TextSecureDataMessage message)
 243             throws IOException, EncapsulatedExceptions {
 244         TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, username, password,
 245                 axolotlStore, USER_AGENT, Optional.<TextSecureMessageSender.EventListener>absent());
 246         messageSender.sendMessage(recipients, message);
 247     }
 248
 249     public TextSecureContent decryptMessage(TextSecureEnvelope envelope) {
 250         TextSecureCipher cipher = new TextSecureCipher(new TextSecureAddress(username), axolotlStore);
 251         try {
 252             return cipher.decrypt(envelope);
 253         } catch (Exception e) {
 254             // TODO handle all exceptions
 255             e.printStackTrace();
 256             return null;
 257         }
 258     }
 259
 260     public void handleEndSession(String source) {
 261         axolotlStore.deleteAllSessions(source);
 262     }
 263
 264     public interface ReceiveMessageHandler {
 265         void handleMessage(TextSecureEnvelope envelope);
 266     }
 267
 268     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 269         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 270         TextSecureMessagePipe messagePipe = null;
 271
 272         try {
 273             messagePipe = messageReceiver.createMessagePipe();
 274
 275             while (true) {
 276                 TextSecureEnvelope envelope;
 277                 try {
 278                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 279                     handler.handleMessage(envelope);
 280                 } catch (TimeoutException e) {
 281                     if (returnOnTimeout)
 282                         return;
 283                 } catch (InvalidVersionException e) {
 284                     System.err.println("Ignoring error: " + e.getMessage());
 285                 }
 286                 save();
 287             }
 288         } finally {
 289             if (messagePipe != null)
 290                 messagePipe.shutdown();
 291         }
 292     }
 293
 294     public File retrieveAttachment(TextSecureAttachmentPointer pointer) throws IOException, InvalidMessageException {
 295         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 296
 297         File tmpFile = File.createTempFile("ts_attach_" + pointer.getId(), ".tmp");
 298         InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile);
 299
 300         new File(attachmentsPath).mkdirs();
 301         File outputFile = new File(attachmentsPath + "/" + pointer.getId());
 302         OutputStream output = null;
 303         try {
 304             output = new FileOutputStream(outputFile);
 305             byte[] buffer = new byte[4096];
 306             int read;
 307
 308             while ((read = input.read(buffer)) != -1) {
 309                 output.write(buffer, 0, read);
 310             }
 311         } catch (FileNotFoundException e) {
 312             e.printStackTrace();
 313             return null;
 314         } finally {
 315             if (output != null) {
 316                 output.close();
 317                 output = null;
 318             }
 319             if (!tmpFile.delete()) {
 320                 System.err.println("Failed to delete temp file: " + tmpFile);
 321             }
 322         }
 323         if (pointer.getPreview().isPresent()) {
 324             File previewFile = new File(outputFile + ".preview");
 325             try {
 326                 output = new FileOutputStream(previewFile);
 327                 byte[] preview = pointer.getPreview().get();
 328                 output.write(preview, 0, preview.length);
 329             } catch (FileNotFoundException e) {
 330                 e.printStackTrace();
 331                 return null;
 332             } finally {
 333                 if (output != null) {
 334                     output.close();
 335                 }
 336             }
 337         }
 338         return outputFile;
 339     }
 340
 341     private String canonicalizeNumber(String number) throws InvalidNumberException {
 342         String localNumber = username;
 343         return PhoneNumberFormatter.formatNumber(number, localNumber);
 344     }
 345
 346     TextSecureAddress getPushAddress(String number) throws InvalidNumberException {
 347         String e164number = canonicalizeNumber(number);
 348         return new TextSecureAddress(e164number);
 349     }
 350 }