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 org.apache.commons.io.IOUtils;
  20 import org.json.JSONObject;
  21 import org.whispersystems.libaxolotl.IdentityKeyPair;
  22 import org.whispersystems.libaxolotl.InvalidKeyException;
  23 import org.whispersystems.libaxolotl.InvalidKeyIdException;
  24 import org.whispersystems.libaxolotl.InvalidVersionException;
  25 import org.whispersystems.libaxolotl.ecc.Curve;
  26 import org.whispersystems.libaxolotl.ecc.ECKeyPair;
  27 import org.whispersystems.libaxolotl.state.PreKeyRecord;
  28 import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;
  29 import org.whispersystems.libaxolotl.util.KeyHelper;
  30 import org.whispersystems.libaxolotl.util.Medium;
  31 import org.whispersystems.libaxolotl.util.guava.Optional;
  32 import org.whispersystems.textsecure.api.TextSecureAccountManager;
  33 import org.whispersystems.textsecure.api.TextSecureMessagePipe;
  34 import org.whispersystems.textsecure.api.TextSecureMessageReceiver;
  35 import org.whispersystems.textsecure.api.TextSecureMessageSender;
  36 import org.whispersystems.textsecure.api.crypto.TextSecureCipher;
  37 import org.whispersystems.textsecure.api.messages.TextSecureContent;
  38 import org.whispersystems.textsecure.api.messages.TextSecureDataMessage;
  39 import org.whispersystems.textsecure.api.messages.TextSecureEnvelope;
  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.LinkedList;
  48 import java.util.List;
  49 import java.util.concurrent.TimeUnit;
  50 import java.util.concurrent.TimeoutException;
  51
  52 public class Manager {
  53     private final static String URL = "https://textsecure-service.whispersystems.org";
  54     private final static TrustStore TRUST_STORE = new WhisperTrustStore();
  55
  56     private final static String settingsPath = System.getProperty("user.home") + "/.config/textsecure";
  57
  58     private String username;
  59     private String password;
  60     private String signalingKey;
  61     private int preKeyIdOffset;
  62     private int nextSignedPreKeyId;
  63
  64     private boolean registered = false;
  65
  66     private JsonAxolotlStore axolotlStore;
  67     TextSecureAccountManager accountManager;
  68
  69     public Manager(String username) {
  70         this.username = username;
  71     }
  72
  73     public String getFileName() {
  74         String path = settingsPath + "/data";
  75         new File(path).mkdirs();
  76         return path + "/" + username;
  77     }
  78
  79     public boolean userExists() {
  80         File f = new File(getFileName());
  81         if (!f.exists() || f.isDirectory()) {
  82             return false;
  83         }
  84         return true;
  85     }
  86
  87     public boolean userHasKeys() {
  88         return axolotlStore != null;
  89     }
  90
  91     public void load() throws IOException, InvalidKeyException {
  92         JSONObject in = new JSONObject(IOUtils.toString(new FileInputStream(getFileName())));
  93         username = in.getString("username");
  94         password = in.getString("password");
  95         if (in.has("signalingKey")) {
  96             signalingKey = in.getString("signalingKey");
  97         }
  98         if (in.has("preKeyIdOffset")) {
  99             preKeyIdOffset = in.getInt("preKeyIdOffset");
 100         } else {
 101             preKeyIdOffset = 0;
 102         }
 103         if (in.has("nextSignedPreKeyId")) {
 104             nextSignedPreKeyId = in.getInt("nextSignedPreKeyId");
 105         } else {
 106             nextSignedPreKeyId = 0;
 107         }
 108         axolotlStore = new JsonAxolotlStore(in.getJSONObject("axolotlStore"));
 109         registered = in.getBoolean("registered");
 110         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password);
 111     }
 112
 113     public void save() {
 114         String out = new JSONObject().put("username", username)
 115                 .put("password", password)
 116                 .put("signalingKey", signalingKey)
 117                 .put("preKeyIdOffset", preKeyIdOffset)
 118                 .put("nextSignedPreKeyId", nextSignedPreKeyId)
 119                 .put("axolotlStore", axolotlStore.getJson())
 120                 .put("registered", registered).toString();
 121         try {
 122             OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(getFileName()));
 123             writer.write(out);
 124             writer.flush();
 125             writer.close();
 126         } catch (Exception e) {
 127             System.out.println("Saving file error: " + e.getMessage());
 128             return;
 129         }
 130     }
 131
 132     public void createNewIdentity() {
 133         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 134         int registrationId = KeyHelper.generateRegistrationId(false);
 135         axolotlStore = new JsonAxolotlStore(identityKey, registrationId);
 136         registered = false;
 137     }
 138
 139     public boolean isRegistered() {
 140         return registered;
 141     }
 142
 143     public void register(boolean voiceVerication) throws IOException {
 144         password = Util.getSecret(18);
 145
 146         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password);
 147
 148         if (voiceVerication)
 149             accountManager.requestVoiceVerificationCode();
 150         else
 151             accountManager.requestSmsVerificationCode();
 152
 153         registered = false;
 154     }
 155
 156     private static final int BATCH_SIZE = 100;
 157
 158     private List<PreKeyRecord> generatePreKeys() {
 159         List<PreKeyRecord> records = new LinkedList<>();
 160
 161         for (int i = 0; i < BATCH_SIZE; i++) {
 162             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 163             ECKeyPair keyPair = Curve.generateKeyPair();
 164             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 165
 166             axolotlStore.storePreKey(preKeyId, record);
 167             records.add(record);
 168         }
 169
 170         preKeyIdOffset = (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE;
 171         return records;
 172     }
 173
 174     private PreKeyRecord generateLastResortPreKey() {
 175         if (axolotlStore.containsPreKey(Medium.MAX_VALUE)) {
 176             try {
 177                 return axolotlStore.loadPreKey(Medium.MAX_VALUE);
 178             } catch (InvalidKeyIdException e) {
 179                 axolotlStore.removePreKey(Medium.MAX_VALUE);
 180             }
 181         }
 182
 183         ECKeyPair keyPair = Curve.generateKeyPair();
 184         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 185
 186         axolotlStore.storePreKey(Medium.MAX_VALUE, record);
 187
 188         return record;
 189     }
 190
 191     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 192         try {
 193             ECKeyPair keyPair = Curve.generateKeyPair();
 194             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 195             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 196
 197             axolotlStore.storeSignedPreKey(nextSignedPreKeyId, record);
 198             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 199
 200             return record;
 201         } catch (InvalidKeyException e) {
 202             throw new AssertionError(e);
 203         }
 204     }
 205
 206     public void verifyAccount(String verificationCode) throws IOException {
 207         verificationCode = verificationCode.replace("-", "");
 208         signalingKey = Util.getSecret(52);
 209         accountManager.verifyAccount(verificationCode, signalingKey, false, axolotlStore.getLocalRegistrationId());
 210
 211         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 212         registered = true;
 213
 214         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 215
 216         PreKeyRecord lastResortKey = generateLastResortPreKey();
 217
 218         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(axolotlStore.getIdentityKeyPair());
 219
 220         accountManager.setPreKeys(axolotlStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 221     }
 222
 223     public void sendMessage(List<TextSecureAddress> recipients, TextSecureDataMessage message)
 224             throws IOException, EncapsulatedExceptions {
 225         TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, username, password,
 226                 axolotlStore, Optional.<TextSecureMessageSender.EventListener>absent());
 227         messageSender.sendMessage(recipients, message);
 228     }
 229
 230     public TextSecureContent decryptMessage(TextSecureEnvelope envelope) {
 231         TextSecureCipher cipher = new TextSecureCipher(new TextSecureAddress(username), axolotlStore);
 232         try {
 233             return cipher.decrypt(envelope);
 234         } catch (Exception e) {
 235             // TODO handle all exceptions
 236             e.printStackTrace();
 237             return null;
 238         }
 239     }
 240
 241     public void handleEndSession(String source) {
 242         axolotlStore.deleteAllSessions(source);
 243     }
 244
 245     public interface ReceiveMessageHandler {
 246         void handleMessage(TextSecureEnvelope envelope);
 247     }
 248
 249     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 250         TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey);
 251         TextSecureMessagePipe messagePipe = null;
 252
 253         try {
 254             messagePipe = messageReceiver.createMessagePipe();
 255
 256             while (true) {
 257                 TextSecureEnvelope envelope;
 258                 try {
 259                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 260                     handler.handleMessage(envelope);
 261                 } catch (TimeoutException e) {
 262                     if (returnOnTimeout)
 263                         return;
 264                 } catch (InvalidVersionException e) {
 265                     System.out.println("Ignoring error: " + e.getMessage());
 266                 }
 267                 save();
 268             }
 269         } finally {
 270             if (messagePipe != null)
 271                 messagePipe.shutdown();
 272         }
 273     }
 274
 275     public String canonicalizeNumber(String number) throws InvalidNumberException {
 276         String localNumber = username;
 277         return PhoneNumberFormatter.formatNumber(number, localNumber);
 278     }
 279
 280     protected TextSecureAddress getPushAddress(String number) throws InvalidNumberException {
 281         String e164number = canonicalizeNumber(number);
 282         return new TextSecureAddress(e164number);
 283     }
 284 }