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.TextSecureEnvelope;
  39 import org.whispersystems.textsecure.api.push.TextSecureAddress;
  40 import org.whispersystems.textsecure.api.push.TrustStore;
  41 import org.whispersystems.textsecure.api.util.InvalidNumberException;
  42 import org.whispersystems.textsecure.api.util.PhoneNumberFormatter;
  43
  44 import java.io.*;
  45 import java.util.LinkedList;
  46 import java.util.List;
  47 import java.util.concurrent.TimeUnit;
  48 import java.util.concurrent.TimeoutException;
  49
  50 public class Manager {
  51     private final static String URL = "https://textsecure-service.whispersystems.org";
  52     private final static TrustStore TRUST_STORE = new WhisperTrustStore();
  53
  54     private final static String settingsPath = System.getProperty("user.home") + "/.config/textsecure";
  55
  56     private String username;
  57     private String password;
  58     private String signalingKey;
  59     private int preKeyIdOffset;
  60     private int nextSignedPreKeyId;
  61
  62     private boolean registered = false;
  63
  64     private JsonAxolotlStore axolotlStore;
  65     TextSecureAccountManager accountManager;
  66
  67     public Manager(String username) {
  68         this.username = username;
  69     }
  70
  71     private String getFileName() {
  72         String path = settingsPath + "/data";
  73         new File(path).mkdirs();
  74         return path + "/" + username;
  75     }
  76
  77     public boolean userExists() {
  78         File f = new File(getFileName());
  79         if (!f.exists() || f.isDirectory()) {
  80             return false;
  81         }
  82         return true;
  83     }
  84
  85     public boolean userHasKeys() {
  86         return axolotlStore != null;
  87     }
  88
  89     public void load() throws IOException, InvalidKeyException {
  90         JSONObject in = new JSONObject(IOUtils.toString(new FileInputStream(getFileName())));
  91         username = in.getString("username");
  92         password = in.getString("password");
  93         if (in.has("signalingKey")) {
  94             signalingKey = in.getString("signalingKey");
  95         }
  96         if (in.has("preKeyIdOffset")) {
  97             preKeyIdOffset = in.getInt("preKeyIdOffset");
  98         } else {
  99             preKeyIdOffset = 0;
 100         }
 101         if (in.has("nextSignedPreKeyId")) {
 102             nextSignedPreKeyId = in.getInt("nextSignedPreKeyId");
 103         } else {
 104             nextSignedPreKeyId = 0;
 105         }
 106         axolotlStore = new JsonAxolotlStore(in.getJSONObject("axolotlStore"));
 107         registered = in.getBoolean("registered");
 108         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password);
 109     }
 110
 111     public void save() {
 112         String out = new JSONObject().put("username", username)
 113                 .put("password", password)
 114                 .put("signalingKey", signalingKey)
 115                 .put("preKeyIdOffset", preKeyIdOffset)
 116                 .put("nextSignedPreKeyId", nextSignedPreKeyId)
 117                 .put("axolotlStore", axolotlStore.getJson())
 118                 .put("registered", registered).toString();
 119         try {
 120             OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(getFileName()));
 121             writer.write(out);
 122             writer.flush();
 123             writer.close();
 124         } catch (Exception e) {
 125             System.out.println("Saving file error: " + e.getMessage());
 126             return;
 127         }
 128     }
 129
 130     public void createNewIdentity() {
 131         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 132         int registrationId = KeyHelper.generateRegistrationId(false);
 133         axolotlStore = new JsonAxolotlStore(identityKey, registrationId);
 134         registered = false;
 135     }
 136
 137     public boolean isRegistered() {
 138         return registered;
 139     }
 140
 141     public void register(boolean voiceVerication) throws IOException {
 142         password = Util.getSecret(18);
 143
 144         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password);
 145
 146         if (voiceVerication)
 147             accountManager.requestVoiceVerificationCode();
 148         else
 149             accountManager.requestSmsVerificationCode();
 150
 151         registered = false;
 152     }
 153
 154     private static final int BATCH_SIZE = 100;
 155
 156     private List<PreKeyRecord> generatePreKeys() {
 157         List<PreKeyRecord> records = new LinkedList<>();
 158
 159         for (int i = 0; i < BATCH_SIZE; i++) {
 160             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 161             ECKeyPair keyPair = Curve.generateKeyPair();
 162             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 163
 164             axolotlStore.storePreKey(preKeyId, record);
 165             records.add(record);
 166         }
 167
 168         preKeyIdOffset = (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE;
 169         return records;
 170     }
 171
 172     private PreKeyRecord generateLastResortPreKey() {
 173         if (axolotlStore.containsPreKey(Medium.MAX_VALUE)) {
 174             try {
 175                 return axolotlStore.loadPreKey(Medium.MAX_VALUE);
 176             } catch (InvalidKeyIdException e) {
 177                 axolotlStore.removePreKey(Medium.MAX_VALUE);
 178             }
 179         }
 180
 181         ECKeyPair keyPair = Curve.generateKeyPair();
 182         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 183
 184         axolotlStore.storePreKey(Medium.MAX_VALUE, record);
 185
 186         return record;
 187     }
 188
 189     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 190         try {
 191             ECKeyPair keyPair = Curve.generateKeyPair();
 192             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 193             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 194
 195             axolotlStore.storeSignedPreKey(nextSignedPreKeyId, record);
 196             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 197
 198             return record;
 199         } catch (InvalidKeyException e) {
 200             throw new AssertionError(e);
 201         }
 202     }
 203
 204     public void verifyAccount(String verificationCode) throws IOException {
 205         verificationCode = verificationCode.replace("-", "");
 206         signalingKey = Util.getSecret(52);
 207         accountManager.verifyAccount(verificationCode, signalingKey, false, axolotlStore.getLocalRegistrationId());
 208
 209         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 210         registered = true;
 211
 212         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 213
 214         PreKeyRecord lastResortKey = generateLastResortPreKey();
 215
 216         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(axolotlStore.getIdentityKeyPair());
 217
 218         accountManager.setPreKeys(axolotlStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 219     }
 220
 221     public TextSecureMessageSender getMessageSender() {
 222         return new TextSecureMessageSender(URL, TRUST_STORE, username, password,
 223                 axolotlStore, Optional.<TextSecureMessageSender.EventListener>absent());
 224     }
 225
 226     public TextSecureContent decryptMessage(TextSecureEnvelope envelope) {
 227         TextSecureCipher cipher = new TextSecureCipher(new TextSecureAddress(username), axolotlStore);
 228         try {
 229             return cipher.decrypt(envelope);
 230         } catch (Exception e) {
 231             // TODO handle all exceptions
 232             e.printStackTrace();
 233             return null;
 234         }
 235     }
 236
 237     public void handleEndSession(String source) {
 238         axolotlStore.deleteAllSessions(source);
 239     }
 240
 241     public interface ReceiveMessageHandler {
 242         void handleMessage(TextSecureEnvelope envelope);
 243     }
 244
 245     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 246         TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey);
 247         TextSecureMessagePipe messagePipe = null;
 248
 249         try {
 250             messagePipe = messageReceiver.createMessagePipe();
 251
 252             while (true) {
 253                 TextSecureEnvelope envelope;
 254                 try {
 255                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 256                     handler.handleMessage(envelope);
 257                 } catch (TimeoutException e) {
 258                     if (returnOnTimeout)
 259                         return;
 260                 } catch (InvalidVersionException e) {
 261                     System.out.println("Ignoring error: " + e.getMessage());
 262                 }
 263                 save();
 264             }
 265         } finally {
 266             if (messagePipe != null)
 267                 messagePipe.shutdown();
 268         }
 269     }
 270
 271     public String canonicalizeNumber(String number) throws InvalidNumberException {
 272         String localNumber = username;
 273         return PhoneNumberFormatter.formatNumber(number, localNumber);
 274     }
 275
 276     protected TextSecureAddress getPushAddress(String number) throws InvalidNumberException {
 277         String e164number = canonicalizeNumber(number);
 278         return new TextSecureAddress(e164number);
 279     }
 280 }