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     public final static String PROJECT_NAME =  Manager.class.getPackage().getImplementationTitle();
  55     public final static String PROJECT_VERSION =  Manager.class.getPackage().getImplementationVersion();
  56     private final static String USER_AGENT = PROJECT_NAME + " " + PROJECT_VERSION;
  57
  58     private final static String settingsPath = System.getProperty("user.home") + "/.config/textsecure";
  59     private final static String dataPath = settingsPath + "/data";
  60     private final static String attachmentsPath = settingsPath + "/attachments";
  61
  62     private String username;
  63     private String password;
  64     private String signalingKey;
  65     private int preKeyIdOffset;
  66     private int nextSignedPreKeyId;
  67
  68     private boolean registered = false;
  69
  70     private JsonAxolotlStore axolotlStore;
  71     private TextSecureAccountManager accountManager;
  72
  73     public Manager(String username) {
  74         this.username = username;
  75     }
  76
  77     public String getFileName() {
  78         new File(dataPath).mkdirs();
  79         return dataPath + "/" + username;
  80     }
  81
  82     public boolean userExists() {
  83         File f = new File(getFileName());
  84         return !(!f.exists() || f.isDirectory());
  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, USER_AGENT);
 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.err.println("Saving file error: " + e.getMessage());
 128         }
 129     }
 130
 131     public void createNewIdentity() {
 132         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 133         int registrationId = KeyHelper.generateRegistrationId(false);
 134         axolotlStore = new JsonAxolotlStore(identityKey, registrationId);
 135         registered = false;
 136     }
 137
 138     public boolean isRegistered() {
 139         return registered;
 140     }
 141
 142     public void register(boolean voiceVerication) throws IOException {
 143         password = Util.getSecret(18);
 144
 145         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 146
 147         if (voiceVerication)
 148             accountManager.requestVoiceVerificationCode();
 149         else
 150             accountManager.requestSmsVerificationCode();
 151
 152         registered = false;
 153     }
 154
 155     private static final int BATCH_SIZE = 100;
 156
 157     private List<PreKeyRecord> generatePreKeys() {
 158         List<PreKeyRecord> records = new LinkedList<>();
 159
 160         for (int i = 0; i < BATCH_SIZE; i++) {
 161             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 162             ECKeyPair keyPair = Curve.generateKeyPair();
 163             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 164
 165             axolotlStore.storePreKey(preKeyId, record);
 166             records.add(record);
 167         }
 168
 169         preKeyIdOffset = (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE;
 170         return records;
 171     }
 172
 173     private PreKeyRecord generateLastResortPreKey() {
 174         if (axolotlStore.containsPreKey(Medium.MAX_VALUE)) {
 175             try {
 176                 return axolotlStore.loadPreKey(Medium.MAX_VALUE);
 177             } catch (InvalidKeyIdException e) {
 178                 axolotlStore.removePreKey(Medium.MAX_VALUE);
 179             }
 180         }
 181
 182         ECKeyPair keyPair = Curve.generateKeyPair();
 183         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 184
 185         axolotlStore.storePreKey(Medium.MAX_VALUE, record);
 186
 187         return record;
 188     }
 189
 190     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 191         try {
 192             ECKeyPair keyPair = Curve.generateKeyPair();
 193             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 194             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 195
 196             axolotlStore.storeSignedPreKey(nextSignedPreKeyId, record);
 197             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 198
 199             return record;
 200         } catch (InvalidKeyException e) {
 201             throw new AssertionError(e);
 202         }
 203     }
 204
 205     public void verifyAccount(String verificationCode) throws IOException {
 206         verificationCode = verificationCode.replace("-", "");
 207         signalingKey = Util.getSecret(52);
 208         accountManager.verifyAccountWithCode(verificationCode, signalingKey, axolotlStore.getLocalRegistrationId(), false);
 209
 210         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 211         registered = true;
 212
 213         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 214
 215         PreKeyRecord lastResortKey = generateLastResortPreKey();
 216
 217         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(axolotlStore.getIdentityKeyPair());
 218
 219         accountManager.setPreKeys(axolotlStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 220     }
 221
 222     public void sendMessage(List<TextSecureAddress> recipients, TextSecureDataMessage message)
 223             throws IOException, EncapsulatedExceptions {
 224         TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, username, password,
 225                 axolotlStore, USER_AGENT, Optional.<TextSecureMessageSender.EventListener>absent());
 226         messageSender.sendMessage(recipients, message);
 227     }
 228
 229     public TextSecureContent decryptMessage(TextSecureEnvelope envelope) {
 230         TextSecureCipher cipher = new TextSecureCipher(new TextSecureAddress(username), axolotlStore);
 231         try {
 232             return cipher.decrypt(envelope);
 233         } catch (Exception e) {
 234             // TODO handle all exceptions
 235             e.printStackTrace();
 236             return null;
 237         }
 238     }
 239
 240     public void handleEndSession(String source) {
 241         axolotlStore.deleteAllSessions(source);
 242     }
 243
 244     public interface ReceiveMessageHandler {
 245         void handleMessage(TextSecureEnvelope envelope);
 246     }
 247
 248     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 249         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 250         TextSecureMessagePipe messagePipe = null;
 251
 252         try {
 253             messagePipe = messageReceiver.createMessagePipe();
 254
 255             while (true) {
 256                 TextSecureEnvelope envelope;
 257                 try {
 258                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 259                     handler.handleMessage(envelope);
 260                 } catch (TimeoutException e) {
 261                     if (returnOnTimeout)
 262                         return;
 263                 } catch (InvalidVersionException e) {
 264                     System.err.println("Ignoring error: " + e.getMessage());
 265                 }
 266                 save();
 267             }
 268         } finally {
 269             if (messagePipe != null)
 270                 messagePipe.shutdown();
 271         }
 272     }
 273
 274     public File retrieveAttachment(TextSecureAttachmentPointer pointer) throws IOException, InvalidMessageException {
 275         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 276
 277         File tmpFile = File.createTempFile("ts_attach_" + pointer.getId(), ".tmp");
 278         InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile);
 279
 280         new File(attachmentsPath).mkdirs();
 281         File outputFile = new File(attachmentsPath + "/" + pointer.getId());
 282         OutputStream output = null;
 283         try {
 284             output = new FileOutputStream(outputFile);
 285             byte[] buffer = new byte[4096];
 286             int read;
 287
 288             while ((read = input.read(buffer)) != -1) {
 289                 output.write(buffer, 0, read);
 290             }
 291         } catch (FileNotFoundException e) {
 292             e.printStackTrace();
 293             return null;
 294         } finally {
 295             if (output != null) {
 296                 output.close();
 297                 output = null;
 298             }
 299             if (!tmpFile.delete()) {
 300                 System.err.println("Failed to delete temp file: " + tmpFile);
 301             }
 302         }
 303         if (pointer.getPreview().isPresent()) {
 304             File previewFile = new File(outputFile + ".preview");
 305             try {
 306                 output = new FileOutputStream(previewFile);
 307                 byte[] preview = pointer.getPreview().get();
 308                 output.write(preview, 0, preview.length);
 309             } catch (FileNotFoundException e) {
 310                 e.printStackTrace();
 311                 return null;
 312             } finally {
 313                 if (output != null) {
 314                     output.close();
 315                 }
 316             }
 317         }
 318         return outputFile;
 319     }
 320
 321     private String canonicalizeNumber(String number) throws InvalidNumberException {
 322         String localNumber = username;
 323         return PhoneNumberFormatter.formatNumber(number, localNumber);
 324     }
 325
 326     TextSecureAddress getPushAddress(String number) throws InvalidNumberException {
 327         String e164number = canonicalizeNumber(number);
 328         return new TextSecureAddress(e164number);
 329     }
 330 }