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 com.fasterxml.jackson.annotation.JsonAutoDetect;
  20 import com.fasterxml.jackson.annotation.PropertyAccessor;
  21 import com.fasterxml.jackson.databind.DeserializationFeature;
  22 import com.fasterxml.jackson.databind.JsonNode;
  23 import com.fasterxml.jackson.databind.ObjectMapper;
  24 import com.fasterxml.jackson.databind.SerializationFeature;
  25 import com.fasterxml.jackson.databind.node.ObjectNode;
  26 import org.whispersystems.libaxolotl.*;
  27 import org.whispersystems.libaxolotl.ecc.Curve;
  28 import org.whispersystems.libaxolotl.ecc.ECKeyPair;
  29 import org.whispersystems.libaxolotl.state.PreKeyRecord;
  30 import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;
  31 import org.whispersystems.libaxolotl.util.KeyHelper;
  32 import org.whispersystems.libaxolotl.util.Medium;
  33 import org.whispersystems.libaxolotl.util.guava.Optional;
  34 import org.whispersystems.textsecure.api.TextSecureAccountManager;
  35 import org.whispersystems.textsecure.api.TextSecureMessagePipe;
  36 import org.whispersystems.textsecure.api.TextSecureMessageReceiver;
  37 import org.whispersystems.textsecure.api.TextSecureMessageSender;
  38 import org.whispersystems.textsecure.api.crypto.TextSecureCipher;
  39 import org.whispersystems.textsecure.api.messages.*;
  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 class Manager {
  53     private final static String URL = "https://textsecure-service.whispersystems.org";
  54     private final static TrustStore TRUST_STORE = new WhisperTrustStore();
  55
  56     public final static String PROJECT_NAME = Manager.class.getPackage().getImplementationTitle();
  57     public final static String PROJECT_VERSION = Manager.class.getPackage().getImplementationVersion();
  58     private final static String USER_AGENT = PROJECT_NAME + " " + PROJECT_VERSION;
  59
  60     private final static String settingsPath = System.getProperty("user.home") + "/.config/textsecure";
  61     private final static String dataPath = settingsPath + "/data";
  62     private final static String attachmentsPath = settingsPath + "/attachments";
  63
  64     private final ObjectMapper jsonProcessot = new ObjectMapper();
  65     private String username;
  66     private String password;
  67     private String signalingKey;
  68     private int preKeyIdOffset;
  69     private int nextSignedPreKeyId;
  70
  71     private boolean registered = false;
  72
  73     private JsonAxolotlStore axolotlStore;
  74     private TextSecureAccountManager accountManager;
  75     private JsonGroupStore groupStore;
  76
  77     public Manager(String username) {
  78         this.username = username;
  79         jsonProcessot.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.NONE); // disable autodetect
  80         jsonProcessot.enable(SerializationFeature.INDENT_OUTPUT); // for pretty print, you can disable it.
  81         jsonProcessot.enable(SerializationFeature.WRITE_NULL_MAP_VALUES);
  82         jsonProcessot.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
  83     }
  84
  85     public String getFileName() {
  86         new File(dataPath).mkdirs();
  87         return dataPath + "/" + username;
  88     }
  89
  90     public boolean userExists() {
  91         File f = new File(getFileName());
  92         return !(!f.exists() || f.isDirectory());
  93     }
  94
  95     public boolean userHasKeys() {
  96         return axolotlStore != null;
  97     }
  98
  99     private JsonNode getNotNullNode(JsonNode parent, String name) throws InvalidObjectException {
 100         JsonNode node = parent.get(name);
 101         if (node == null) {
 102             throw new InvalidObjectException(String.format("Incorrect file format: expected parameter %s not found ", name));
 103         }
 104
 105         return node;
 106     }
 107
 108     public void load() throws IOException, InvalidKeyException {
 109         JsonNode rootNode = jsonProcessot.readTree(new File(getFileName()));
 110
 111         username = getNotNullNode(rootNode, "username").asText();
 112         password = getNotNullNode(rootNode, "password").asText();
 113         if (rootNode.has("signalingKey")) {
 114             signalingKey = getNotNullNode(rootNode, "signalingKey").asText();
 115         }
 116         if (rootNode.has("preKeyIdOffset")) {
 117             preKeyIdOffset = getNotNullNode(rootNode, "preKeyIdOffset").asInt(0);
 118         } else {
 119             preKeyIdOffset = 0;
 120         }
 121         if (rootNode.has("nextSignedPreKeyId")) {
 122             nextSignedPreKeyId = getNotNullNode(rootNode, "nextSignedPreKeyId").asInt();
 123         } else {
 124             nextSignedPreKeyId = 0;
 125         }
 126         axolotlStore = jsonProcessot.convertValue(getNotNullNode(rootNode, "axolotlStore"), JsonAxolotlStore.class); //new JsonAxolotlStore(in.getJSONObject("axolotlStore"));
 127         registered = getNotNullNode(rootNode, "registered").asBoolean();
 128         JsonNode groupStoreNode = rootNode.get("groupStore");
 129         if (groupStoreNode != null) {
 130             groupStore = jsonProcessot.convertValue(groupStoreNode, JsonGroupStore.class);
 131         }
 132         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 133     }
 134
 135     public void save() {
 136         ObjectNode rootNode = jsonProcessot.createObjectNode();
 137         rootNode.put("username", username)
 138                 .put("password", password)
 139                 .put("signalingKey", signalingKey)
 140                 .put("preKeyIdOffset", preKeyIdOffset)
 141                 .put("nextSignedPreKeyId", nextSignedPreKeyId)
 142                 .put("registered", registered)
 143                 .putPOJO("axolotlStore", axolotlStore)
 144                 .putPOJO("groupStore", groupStore)
 145         ;
 146         try {
 147             jsonProcessot.writeValue(new File(getFileName()), rootNode);
 148         } catch (Exception e) {
 149             System.err.println(String.format("Error saving file: %s", e.getMessage()));
 150         }
 151     }
 152
 153     public void createNewIdentity() {
 154         IdentityKeyPair identityKey = KeyHelper.generateIdentityKeyPair();
 155         int registrationId = KeyHelper.generateRegistrationId(false);
 156         axolotlStore = new JsonAxolotlStore(identityKey, registrationId);
 157         groupStore = new JsonGroupStore();
 158         registered = false;
 159     }
 160
 161     public boolean isRegistered() {
 162         return registered;
 163     }
 164
 165     public void register(boolean voiceVerication) throws IOException {
 166         password = Util.getSecret(18);
 167
 168         accountManager = new TextSecureAccountManager(URL, TRUST_STORE, username, password, USER_AGENT);
 169
 170         if (voiceVerication)
 171             accountManager.requestVoiceVerificationCode();
 172         else
 173             accountManager.requestSmsVerificationCode();
 174
 175         registered = false;
 176     }
 177
 178     private static final int BATCH_SIZE = 100;
 179
 180     private List<PreKeyRecord> generatePreKeys() {
 181         List<PreKeyRecord> records = new LinkedList<>();
 182
 183         for (int i = 0; i < BATCH_SIZE; i++) {
 184             int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
 185             ECKeyPair keyPair = Curve.generateKeyPair();
 186             PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
 187
 188             axolotlStore.storePreKey(preKeyId, record);
 189             records.add(record);
 190         }
 191
 192         preKeyIdOffset = (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE;
 193         return records;
 194     }
 195
 196     private PreKeyRecord generateLastResortPreKey() {
 197         if (axolotlStore.containsPreKey(Medium.MAX_VALUE)) {
 198             try {
 199                 return axolotlStore.loadPreKey(Medium.MAX_VALUE);
 200             } catch (InvalidKeyIdException e) {
 201                 axolotlStore.removePreKey(Medium.MAX_VALUE);
 202             }
 203         }
 204
 205         ECKeyPair keyPair = Curve.generateKeyPair();
 206         PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
 207
 208         axolotlStore.storePreKey(Medium.MAX_VALUE, record);
 209
 210         return record;
 211     }
 212
 213     private SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair) {
 214         try {
 215             ECKeyPair keyPair = Curve.generateKeyPair();
 216             byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
 217             SignedPreKeyRecord record = new SignedPreKeyRecord(nextSignedPreKeyId, System.currentTimeMillis(), keyPair, signature);
 218
 219             axolotlStore.storeSignedPreKey(nextSignedPreKeyId, record);
 220             nextSignedPreKeyId = (nextSignedPreKeyId + 1) % Medium.MAX_VALUE;
 221
 222             return record;
 223         } catch (InvalidKeyException e) {
 224             throw new AssertionError(e);
 225         }
 226     }
 227
 228     public void verifyAccount(String verificationCode) throws IOException {
 229         verificationCode = verificationCode.replace("-", "");
 230         signalingKey = Util.getSecret(52);
 231         accountManager.verifyAccountWithCode(verificationCode, signalingKey, axolotlStore.getLocalRegistrationId(), false);
 232
 233         //accountManager.setGcmId(Optional.of(GoogleCloudMessaging.getInstance(this).register(REGISTRATION_ID)));
 234         registered = true;
 235
 236         List<PreKeyRecord> oneTimePreKeys = generatePreKeys();
 237
 238         PreKeyRecord lastResortKey = generateLastResortPreKey();
 239
 240         SignedPreKeyRecord signedPreKeyRecord = generateSignedPreKey(axolotlStore.getIdentityKeyPair());
 241
 242         accountManager.setPreKeys(axolotlStore.getIdentityKeyPair().getPublicKey(), lastResortKey, signedPreKeyRecord, oneTimePreKeys);
 243     }
 244
 245     public void sendMessage(List<TextSecureAddress> recipients, TextSecureDataMessage message)
 246             throws IOException, EncapsulatedExceptions {
 247         TextSecureMessageSender messageSender = new TextSecureMessageSender(URL, TRUST_STORE, username, password,
 248                 axolotlStore, USER_AGENT, Optional.<TextSecureMessageSender.EventListener>absent());
 249         messageSender.sendMessage(recipients, message);
 250     }
 251
 252     public TextSecureContent decryptMessage(TextSecureEnvelope envelope) {
 253         TextSecureCipher cipher = new TextSecureCipher(new TextSecureAddress(username), axolotlStore);
 254         try {
 255             return cipher.decrypt(envelope);
 256         } catch (Exception e) {
 257             // TODO handle all exceptions
 258             e.printStackTrace();
 259             return null;
 260         }
 261     }
 262
 263     public void handleEndSession(String source) {
 264         axolotlStore.deleteAllSessions(source);
 265     }
 266
 267     public interface ReceiveMessageHandler {
 268         void handleMessage(TextSecureEnvelope envelope, TextSecureContent decryptedContent, GroupInfo group);
 269     }
 270
 271     public void receiveMessages(int timeoutSeconds, boolean returnOnTimeout, ReceiveMessageHandler handler) throws IOException {
 272         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 273         TextSecureMessagePipe messagePipe = null;
 274
 275         try {
 276             messagePipe = messageReceiver.createMessagePipe();
 277
 278             while (true) {
 279                 TextSecureEnvelope envelope;
 280                 TextSecureContent content = null;
 281                 GroupInfo group = null;
 282                 try {
 283                     envelope = messagePipe.read(timeoutSeconds, TimeUnit.SECONDS);
 284                     if (!envelope.isReceipt()) {
 285                         content = decryptMessage(envelope);
 286                         if (content != null) {
 287                             if (content.getDataMessage().isPresent()) {
 288                                 TextSecureDataMessage message = content.getDataMessage().get();
 289                                 if (message.getGroupInfo().isPresent()) {
 290                                     TextSecureGroup groupInfo = message.getGroupInfo().get();
 291                                     switch (groupInfo.getType()) {
 292                                         case UPDATE:
 293                                             group = new GroupInfo(groupInfo.getGroupId(), groupInfo.getName().get(), groupInfo.getMembers().get(), groupInfo.getAvatar().get().asPointer().getId());
 294                                             groupStore.updateGroup(group);
 295                                             break;
 296                                         case DELIVER:
 297                                             group = groupStore.getGroup(groupInfo.getGroupId());
 298                                             break;
 299                                         case QUIT:
 300                                             group = groupStore.getGroup(groupInfo.getGroupId());
 301                                             if (group != null) {
 302                                                 group.members.remove(envelope.getSource());
 303                                             }
 304                                             break;
 305                                     }
 306                                 }
 307                             }
 308                         }
 309                     }
 310                     handler.handleMessage(envelope, content, group);
 311                 } catch (TimeoutException e) {
 312                     if (returnOnTimeout)
 313                         return;
 314                 } catch (InvalidVersionException e) {
 315                     System.err.println("Ignoring error: " + e.getMessage());
 316                 }
 317                 save();
 318             }
 319         } finally {
 320             if (messagePipe != null)
 321                 messagePipe.shutdown();
 322         }
 323     }
 324
 325     public File retrieveAttachment(TextSecureAttachmentPointer pointer) throws IOException, InvalidMessageException {
 326         final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey, USER_AGENT);
 327
 328         File tmpFile = File.createTempFile("ts_attach_" + pointer.getId(), ".tmp");
 329         InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile);
 330
 331         new File(attachmentsPath).mkdirs();
 332         File outputFile = new File(attachmentsPath + "/" + pointer.getId());
 333         OutputStream output = null;
 334         try {
 335             output = new FileOutputStream(outputFile);
 336             byte[] buffer = new byte[4096];
 337             int read;
 338
 339             while ((read = input.read(buffer)) != -1) {
 340                 output.write(buffer, 0, read);
 341             }
 342         } catch (FileNotFoundException e) {
 343             e.printStackTrace();
 344             return null;
 345         } finally {
 346             if (output != null) {
 347                 output.close();
 348                 output = null;
 349             }
 350             if (!tmpFile.delete()) {
 351                 System.err.println("Failed to delete temp file: " + tmpFile);
 352             }
 353         }
 354         if (pointer.getPreview().isPresent()) {
 355             File previewFile = new File(outputFile + ".preview");
 356             try {
 357                 output = new FileOutputStream(previewFile);
 358                 byte[] preview = pointer.getPreview().get();
 359                 output.write(preview, 0, preview.length);
 360             } catch (FileNotFoundException e) {
 361                 e.printStackTrace();
 362                 return null;
 363             } finally {
 364                 if (output != null) {
 365                     output.close();
 366                 }
 367             }
 368         }
 369         return outputFile;
 370     }
 371
 372     private String canonicalizeNumber(String number) throws InvalidNumberException {
 373         String localNumber = username;
 374         return PhoneNumberFormatter.formatNumber(number, localNumber);
 375     }
 376
 377     TextSecureAddress getPushAddress(String number) throws InvalidNumberException {
 378         String e164number = canonicalizeNumber(number);
 379         return new TextSecureAddress(e164number);
 380     }
 381
 382     GroupInfo getGroupInfo(byte[] groupId) {
 383         return groupStore.getGroup(groupId);
 384     }
 385 }