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 USER_AGENT = "textsecure-cli";
  55
  56     private final static String settingsPath = System.getProperty("user.home") + "/.config/textsecure";
  57     private final static String dataPath = settingsPath + "/data";
  58     private final static String attachmentsPath = settingsPath + "/attachments";
  59
  60     private String username;
  61     private String password;
  62     private String signalingKey;
  63     private int preKeyIdOffset;
  64     private int nextSignedPreKeyId;
  65
  66     private boolean registered = false;
  67
  68     private JsonAxolotlStore axolotlStore;
  69     private TextSecureAccountManager accountManager;
  70
  71     public Manager(String username) {
  72         this.username = username;
  73     }
  74
  75     public String getFileName() {
  76         new File(dataPath).mkdirs();
  77         return dataPath + "/" + username;
  78     }
  79
  80     public boolean userExists() {
  81         File f = new File(getFileName());
  82         return !(!f.exists() || f.isDirectory());
  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, USER_AGENT);
 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         }
 127     }
 128
 129     public void createNewIdentity() {
 130         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 131         int registrationId = KeyHelper.generateRegistrationId(false);
 132         axolotlStore = new JsonAxolotlStore(identityKey, registrationId);
 133         registered = false;
 134     }
 135
 136     public boolean isRegistered() {
 137         return registered;
 138     }
 139
 140     public void register(boolean voiceVerication) throws IOException {
 141         password = Util.getSecret(18);
 142
 143         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 144
 145         if (voiceVerication)
 146             accountManager.requestVoiceVerificationCode();
 147         else
 148             accountManager.requestSmsVerificationCode();
 149
 150         registered = false;
 151     }
 152
 153     private static final int BATCH_SIZE = 100;
 154
 155     private List<PreKeyRecord> generatePreKeys() {
 156         List<PreKeyRecord> records = new LinkedList<>();
 157
 158         for (int i = 0; i < BATCH_SIZE; i++) {
 159             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 160             ECKeyPair keyPair = Curve.generateKeyPair();
 161             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 162
 163             axolotlStore.storePreKey(preKeyId, record);
 164             records.add(record);
 165         }
 166
 167         preKeyIdOffset = (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE;
 168         return records;
 169     }
 170
 171     private PreKeyRecord generateLastResortPreKey() {
 172         if (axolotlStore.containsPreKey(Medium.MAX_VALUE)) {
 173             try {
 174                 return axolotlStore.loadPreKey(Medium.MAX_VALUE);
 175             } catch (InvalidKeyIdException e) {
 176                 axolotlStore.removePreKey(Medium.MAX_VALUE);
 177             }
 178         }
 179
 180         ECKeyPair keyPair = Curve.generateKeyPair();
 181         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 182
 183         axolotlStore.storePreKey(Medium.MAX_VALUE, record);
 184
 185         return record;
 186     }
 187
 188     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 189         try {
 190             ECKeyPair keyPair = Curve.generateKeyPair();
 191             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 192             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 193
 194             axolotlStore.storeSignedPreKey(nextSignedPreKeyId, record);
 195             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 196
 197             return record;
 198         } catch (InvalidKeyException e) {
 199             throw new AssertionError(e);
 200         }
 201     }
 202
 203     public void verifyAccount(String verificationCode) throws IOException {
 204         verificationCode = verificationCode.replace("-", "");
 205         signalingKey = Util.getSecret(52);
 206         accountManager.verifyAccountWithCode(verificationCode, signalingKey, axolotlStore.getLocalRegistrationId());
 207
 208         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 209         registered = true;
 210
 211         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 212
 213         PreKeyRecord lastResortKey = generateLastResortPreKey();
 214
 215         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(axolotlStore.getIdentityKeyPair());
 216
 217         accountManager.setPreKeys(axolotlStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 218     }
 219
 220     public void sendMessage(List<TextSecureAddress> recipients, TextSecureDataMessage message)
 221             throws IOException, EncapsulatedExceptions {
 222         TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, username, password,
 223                 axolotlStore, USER_AGENT, Optional.<TextSecureMessageSender.EventListener>absent());
 224         messageSender.sendMessage(recipients, message);
 225     }
 226
 227     public TextSecureContent decryptMessage(TextSecureEnvelope envelope) {
 228         TextSecureCipher cipher = new TextSecureCipher(new TextSecureAddress(username), axolotlStore);
 229         try {
 230             return cipher.decrypt(envelope);
 231         } catch (Exception e) {
 232             // TODO handle all exceptions
 233             e.printStackTrace();
 234             return null;
 235         }
 236     }
 237
 238     public void handleEndSession(String source) {
 239         axolotlStore.deleteAllSessions(source);
 240     }
 241
 242     public interface ReceiveMessageHandler {
 243         void handleMessage(TextSecureEnvelope envelope);
 244     }
 245
 246     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 247         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 248         TextSecureMessagePipe messagePipe = null;
 249
 250         try {
 251             messagePipe = messageReceiver.createMessagePipe();
 252
 253             while (true) {
 254                 TextSecureEnvelope envelope;
 255                 try {
 256                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 257                     handler.handleMessage(envelope);
 258                 } catch (TimeoutException e) {
 259                     if (returnOnTimeout)
 260                         return;
 261                 } catch (InvalidVersionException e) {
 262                     System.out.println("Ignoring error: " + e.getMessage());
 263                 }
 264                 save();
 265             }
 266         } finally {
 267             if (messagePipe != null)
 268                 messagePipe.shutdown();
 269         }
 270     }
 271
 272     public File retrieveAttachment(TextSecureAttachmentPointer pointer) throws IOException, InvalidMessageException {
 273         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 274
 275         File tmpFile = File.createTempFile("ts_attach_" + pointer.getId(), ".tmp");
 276         InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile);
 277
 278         new File(attachmentsPath).mkdirs();
 279         File outputFile = new File(attachmentsPath + "/" + pointer.getId());
 280         OutputStream output = null;
 281         try {
 282             output = new FileOutputStream(outputFile);
 283             byte[] buffer = new byte[4096];
 284             int read;
 285
 286             while ((read = input.read(buffer)) != -1) {
 287                 output.write(buffer, 0, read);
 288             }
 289         } catch (FileNotFoundException e) {
 290             e.printStackTrace();
 291             return null;
 292         } finally {
 293             if (output != null) {
 294                 output.close();
 295             }
 296             tmpFile.delete();
 297         }
 298         return outputFile;
 299     }
 300
 301     private String canonicalizeNumber(String number) throws InvalidNumberException {
 302         String localNumber = username;
 303         return PhoneNumberFormatter.formatNumber(number, localNumber);
 304     }
 305
 306     TextSecureAddress getPushAddress(String number) throws InvalidNumberException {
 307         String e164number = canonicalizeNumber(number);
 308         return new TextSecureAddress(e164number);
 309     }
 310 }