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.*;
  22 import org.whispersystems.libaxolotl.ecc.Curve;
  23 import org.whispersystems.libaxolotl.ecc.ECKeyPair;
  24 import org.whispersystems.libaxolotl.state.PreKeyRecord;
  25 import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;
  26 import org.whispersystems.libaxolotl.util.KeyHelper;
  27 import org.whispersystems.libaxolotl.util.Medium;
  28 import org.whispersystems.libaxolotl.util.guava.Optional;
  29 import org.whispersystems.textsecure.api.TextSecureAccountManager;
  30 import org.whispersystems.textsecure.api.TextSecureMessagePipe;
  31 import org.whispersystems.textsecure.api.TextSecureMessageReceiver;
  32 import org.whispersystems.textsecure.api.TextSecureMessageSender;
  33 import org.whispersystems.textsecure.api.crypto.TextSecureCipher;
  34 import org.whispersystems.textsecure.api.messages.TextSecureAttachmentPointer;
  35 import org.whispersystems.textsecure.api.messages.TextSecureContent;
  36 import org.whispersystems.textsecure.api.messages.TextSecureDataMessage;
  37 import org.whispersystems.textsecure.api.messages.TextSecureEnvelope;
  38 import org.whispersystems.textsecure.api.push.TextSecureAddress;
  39 import org.whispersystems.textsecure.api.push.TrustStore;
  40 import org.whispersystems.textsecure.api.push.exceptions.EncapsulatedExceptions;
  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 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     private final static String dataPath = settingsPath + "/data";
  56     private final static String attachmentsPath = settingsPath + "/attachments";
  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     private TextSecureAccountManager accountManager;
  68
  69     public Manager(String username) {
  70         this.username = username;
  71     }
  72
  73     public String getFileName() {
  74         new File(dataPath).mkdirs();
  75         return dataPath + "/" + username;
  76     }
  77
  78     public boolean userExists() {
  79         File f = new File(getFileName());
  80         return !(!f.exists() || f.isDirectory());
  81     }
  82
  83     public boolean userHasKeys() {
  84         return axolotlStore != null;
  85     }
  86
  87     public void load() throws IOException, InvalidKeyException {
  88         JSONObject in = new JSONObject(IOUtils.toString(new FileInputStream(getFileName())));
  89         username = in.getString("username");
  90         password = in.getString("password");
  91         if (in.has("signalingKey")) {
  92             signalingKey = in.getString("signalingKey");
  93         }
  94         if (in.has("preKeyIdOffset")) {
  95             preKeyIdOffset = in.getInt("preKeyIdOffset");
  96         } else {
  97             preKeyIdOffset = 0;
  98         }
  99         if (in.has("nextSignedPreKeyId")) {
 100             nextSignedPreKeyId = in.getInt("nextSignedPreKeyId");
 101         } else {
 102             nextSignedPreKeyId = 0;
 103         }
 104         axolotlStore = new JsonAxolotlStore(in.getJSONObject("axolotlStore"));
 105         registered = in.getBoolean("registered");
 106         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password);
 107     }
 108
 109     public void save() {
 110         String out = new JSONObject().put("username", username)
 111                 .put("password", password)
 112                 .put("signalingKey", signalingKey)
 113                 .put("preKeyIdOffset", preKeyIdOffset)
 114                 .put("nextSignedPreKeyId", nextSignedPreKeyId)
 115                 .put("axolotlStore", axolotlStore.getJson())
 116                 .put("registered", registered).toString();
 117         try {
 118             OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(getFileName()));
 119             writer.write(out);
 120             writer.flush();
 121             writer.close();
 122         } catch (Exception e) {
 123             System.out.println("Saving file error: " + e.getMessage());
 124         }
 125     }
 126
 127     public void createNewIdentity() {
 128         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 129         int registrationId = KeyHelper.generateRegistrationId(false);
 130         axolotlStore = new JsonAxolotlStore(identityKey, registrationId);
 131         registered = false;
 132     }
 133
 134     public boolean isRegistered() {
 135         return registered;
 136     }
 137
 138     public void register(boolean voiceVerication) throws IOException {
 139         password = Util.getSecret(18);
 140
 141         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password);
 142
 143         if (voiceVerication)
 144             accountManager.requestVoiceVerificationCode();
 145         else
 146             accountManager.requestSmsVerificationCode();
 147
 148         registered = false;
 149     }
 150
 151     private static final int BATCH_SIZE = 100;
 152
 153     private List<PreKeyRecord> generatePreKeys() {
 154         List<PreKeyRecord> records = new LinkedList<>();
 155
 156         for (int i = 0; i < BATCH_SIZE; i++) {
 157             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 158             ECKeyPair keyPair = Curve.generateKeyPair();
 159             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 160
 161             axolotlStore.storePreKey(preKeyId, record);
 162             records.add(record);
 163         }
 164
 165         preKeyIdOffset = (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE;
 166         return records;
 167     }
 168
 169     private PreKeyRecord generateLastResortPreKey() {
 170         if (axolotlStore.containsPreKey(Medium.MAX_VALUE)) {
 171             try {
 172                 return axolotlStore.loadPreKey(Medium.MAX_VALUE);
 173             } catch (InvalidKeyIdException e) {
 174                 axolotlStore.removePreKey(Medium.MAX_VALUE);
 175             }
 176         }
 177
 178         ECKeyPair keyPair = Curve.generateKeyPair();
 179         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 180
 181         axolotlStore.storePreKey(Medium.MAX_VALUE, record);
 182
 183         return record;
 184     }
 185
 186     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 187         try {
 188             ECKeyPair keyPair = Curve.generateKeyPair();
 189             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 190             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 191
 192             axolotlStore.storeSignedPreKey(nextSignedPreKeyId, record);
 193             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 194
 195             return record;
 196         } catch (InvalidKeyException e) {
 197             throw new AssertionError(e);
 198         }
 199     }
 200
 201     public void verifyAccount(String verificationCode) throws IOException {
 202         verificationCode = verificationCode.replace("-", "");
 203         signalingKey = Util.getSecret(52);
 204         accountManager.verifyAccount(verificationCode, signalingKey, false, axolotlStore.getLocalRegistrationId());
 205
 206         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 207         registered = true;
 208
 209         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 210
 211         PreKeyRecord lastResortKey = generateLastResortPreKey();
 212
 213         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(axolotlStore.getIdentityKeyPair());
 214
 215         accountManager.setPreKeys(axolotlStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 216     }
 217
 218     public void sendMessage(List<TextSecureAddress> recipients, TextSecureDataMessage message)
 219             throws IOException, EncapsulatedExceptions {
 220         TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, username, password,
 221                 axolotlStore, Optional.<TextSecureMessageSender.EventListener>absent());
 222         messageSender.sendMessage(recipients, message);
 223     }
 224
 225     public TextSecureContent decryptMessage(TextSecureEnvelope envelope) {
 226         TextSecureCipher cipher = new TextSecureCipher(new TextSecureAddress(username), axolotlStore);
 227         try {
 228             return cipher.decrypt(envelope);
 229         } catch (Exception e) {
 230             // TODO handle all exceptions
 231             e.printStackTrace();
 232             return null;
 233         }
 234     }
 235
 236     public void handleEndSession(String source) {
 237         axolotlStore.deleteAllSessions(source);
 238     }
 239
 240     public interface ReceiveMessageHandler {
 241         void handleMessage(TextSecureEnvelope envelope);
 242     }
 243
 244     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 245         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey);
 246         TextSecureMessagePipe messagePipe = null;
 247
 248         try {
 249             messagePipe = messageReceiver.createMessagePipe();
 250
 251             while (true) {
 252                 TextSecureEnvelope envelope;
 253                 try {
 254                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 255                     handler.handleMessage(envelope);
 256                 } catch (TimeoutException e) {
 257                     if (returnOnTimeout)
 258                         return;
 259                 } catch (InvalidVersionException e) {
 260                     System.out.println("Ignoring error: " + e.getMessage());
 261                 }
 262                 save();
 263             }
 264         } finally {
 265             if (messagePipe != null)
 266                 messagePipe.shutdown();
 267         }
 268     }
 269
 270     public File retrieveAttachment(TextSecureAttachmentPointer pointer) throws IOException, InvalidMessageException {
 271         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey);
 272
 273         File tmpFile = File.createTempFile("ts_attach_" + pointer.getId(), ".tmp");
 274         InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile);
 275
 276         new File(attachmentsPath).mkdirs();
 277         File outputFile = new File(attachmentsPath + "/" + pointer.getId());
 278         OutputStream output = null;
 279         try {
 280             output = new FileOutputStream(outputFile);
 281             byte[] buffer = new byte[4096];
 282             int read;
 283
 284             while ((read = input.read(buffer)) != -1) {
 285                 output.write(buffer, 0, read);
 286             }
 287         } catch (FileNotFoundException e) {
 288             e.printStackTrace();
 289             return null;
 290         } finally {
 291             if (output != null) {
 292                 output.close();
 293             }
 294             tmpFile.delete();
 295         }
 296         return outputFile;
 297     }
 298
 299     private String canonicalizeNumber(String number) throws InvalidNumberException {
 300         String localNumber = username;
 301         return PhoneNumberFormatter.formatNumber(number, localNumber);
 302     }
 303
 304     TextSecureAddress getPushAddress(String number) throws InvalidNumberException {
 305         String e164number = canonicalizeNumber(number);
 306         return new TextSecureAddress(e164number);
 307     }
 308 }