diff options
Diffstat (limited to 'src/main/java/eu/siacs/conversations/crypto/OtrService.java')
| -rw-r--r-- | src/main/java/eu/siacs/conversations/crypto/OtrService.java | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/src/main/java/eu/siacs/conversations/crypto/OtrService.java b/src/main/java/eu/siacs/conversations/crypto/OtrService.java deleted file mode 100644 index 4ddf51fb..00000000 --- a/src/main/java/eu/siacs/conversations/crypto/OtrService.java +++ /dev/null @@ -1,308 +0,0 @@ -package eu.siacs.conversations.crypto; - -import net.java.otr4j.OtrEngineHost; -import net.java.otr4j.OtrException; -import net.java.otr4j.OtrPolicy; -import net.java.otr4j.OtrPolicyImpl; -import net.java.otr4j.crypto.OtrCryptoEngineImpl; -import net.java.otr4j.crypto.OtrCryptoException; -import net.java.otr4j.session.FragmenterInstructions; -import net.java.otr4j.session.InstanceTag; -import net.java.otr4j.session.SessionID; - -import org.json.JSONException; -import org.json.JSONObject; - -import java.math.BigInteger; -import java.security.KeyFactory; -import java.security.KeyPair; -import java.security.KeyPairGenerator; -import java.security.NoSuchAlgorithmException; -import java.security.PrivateKey; -import java.security.PublicKey; -import java.security.spec.DSAPrivateKeySpec; -import java.security.spec.DSAPublicKeySpec; -import java.security.spec.InvalidKeySpecException; - -import de.thedevstack.android.logcat.Logging; -import de.thedevstack.conversationsplus.ConversationsPlusPreferences; -import eu.siacs.conversations.Config; -import eu.siacs.conversations.entities.Account; -import eu.siacs.conversations.entities.Conversation; -import eu.siacs.conversations.generator.MessageGenerator; -import eu.siacs.conversations.services.XmppConnectionService; -import eu.siacs.conversations.xmpp.chatstate.ChatState; -import eu.siacs.conversations.xmpp.jid.InvalidJidException; -import eu.siacs.conversations.xmpp.jid.Jid; -import eu.siacs.conversations.xmpp.stanzas.MessagePacket; - -public class OtrService extends OtrCryptoEngineImpl implements OtrEngineHost { - - private Account account; - private OtrPolicy otrPolicy; - private KeyPair keyPair; - private XmppConnectionService mXmppConnectionService; - - public OtrService(XmppConnectionService service, Account account) { - this.account = account; - this.otrPolicy = new OtrPolicyImpl(); - this.otrPolicy.setAllowV1(false); - this.otrPolicy.setAllowV2(true); - this.otrPolicy.setAllowV3(true); - this.keyPair = loadKey(account.getKeys()); - this.mXmppConnectionService = service; - } - - private KeyPair loadKey(JSONObject keys) { - if (keys == null) { - return null; - } - try { - BigInteger x = new BigInteger(keys.getString("otr_x"), 16); - BigInteger y = new BigInteger(keys.getString("otr_y"), 16); - BigInteger p = new BigInteger(keys.getString("otr_p"), 16); - BigInteger q = new BigInteger(keys.getString("otr_q"), 16); - BigInteger g = new BigInteger(keys.getString("otr_g"), 16); - KeyFactory keyFactory = KeyFactory.getInstance("DSA"); - DSAPublicKeySpec pubKeySpec = new DSAPublicKeySpec(y, p, q, g); - DSAPrivateKeySpec privateKeySpec = new DSAPrivateKeySpec(x, p, q, g); - PublicKey publicKey = keyFactory.generatePublic(pubKeySpec); - PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec); - return new KeyPair(publicKey, privateKey); - } catch (JSONException e) { - return null; - } catch (NoSuchAlgorithmException e) { - return null; - } catch (InvalidKeySpecException e) { - return null; - } - } - - private void saveKey() { - PublicKey publicKey = keyPair.getPublic(); - PrivateKey privateKey = keyPair.getPrivate(); - KeyFactory keyFactory; - try { - keyFactory = KeyFactory.getInstance("DSA"); - DSAPrivateKeySpec privateKeySpec = keyFactory.getKeySpec( - privateKey, DSAPrivateKeySpec.class); - DSAPublicKeySpec publicKeySpec = keyFactory.getKeySpec(publicKey, - DSAPublicKeySpec.class); - this.account.setKey("otr_x", privateKeySpec.getX().toString(16)); - this.account.setKey("otr_g", privateKeySpec.getG().toString(16)); - this.account.setKey("otr_p", privateKeySpec.getP().toString(16)); - this.account.setKey("otr_q", privateKeySpec.getQ().toString(16)); - this.account.setKey("otr_y", publicKeySpec.getY().toString(16)); - } catch (final NoSuchAlgorithmException | InvalidKeySpecException e) { - e.printStackTrace(); - } - - } - - @Override - public void askForSecret(SessionID id, InstanceTag instanceTag, String question) { - try { - final Jid jid = Jid.fromSessionID(id); - Conversation conversation = this.mXmppConnectionService.find(this.account,jid); - if (conversation!=null) { - conversation.smp().hint = question; - conversation.smp().status = Conversation.Smp.STATUS_CONTACT_REQUESTED; - mXmppConnectionService.updateConversationUi(); - } - } catch (InvalidJidException e) { - Logging.d(Config.LOGTAG,account.getJid().toBareJid()+": smp in invalid session "+id.toString()); - } - } - - @Override - public void finishedSessionMessage(SessionID arg0, String arg1) - throws OtrException { - - } - - @Override - public String getFallbackMessage(SessionID arg0) { - return "I would like to start a private (OTR encrypted) conversation but your client doesn’t seem to support that"; - } - - @Override - public byte[] getLocalFingerprintRaw(SessionID arg0) { - try { - return getFingerprintRaw(getPublicKey()); - } catch (OtrCryptoException e) { - return null; - } - } - - public PublicKey getPublicKey() { - if (this.keyPair == null) { - return null; - } - return this.keyPair.getPublic(); - } - - @Override - public KeyPair getLocalKeyPair(SessionID arg0) throws OtrException { - if (this.keyPair == null) { - KeyPairGenerator kg; - try { - kg = KeyPairGenerator.getInstance("DSA"); - this.keyPair = kg.genKeyPair(); - this.saveKey(); - mXmppConnectionService.databaseBackend.updateAccount(account); - } catch (NoSuchAlgorithmException e) { - Logging.d(Config.LOGTAG, - "error generating key pair " + e.getMessage()); - } - } - return this.keyPair; - } - - @Override - public String getReplyForUnreadableMessage(SessionID arg0) { - // TODO Auto-generated method stub - return null; - } - - @Override - public OtrPolicy getSessionPolicy(SessionID arg0) { - return otrPolicy; - } - - @Override - public void injectMessage(SessionID session, String body) - throws OtrException { - MessagePacket packet = new MessagePacket(); - packet.setFrom(account.getJid()); - if (session.getUserID().isEmpty()) { - packet.setAttribute("to", session.getAccountID()); - } else { - packet.setAttribute("to", session.getAccountID() + "/" + session.getUserID()); - } - packet.setBody(body); - MessageGenerator.addMessageHints(packet); - try { - Jid jid = Jid.fromSessionID(session); - Conversation conversation = mXmppConnectionService.find(account,jid); - if (conversation != null && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) { - if (ConversationsPlusPreferences.chatStates()) { - packet.addChild(ChatState.toElement(conversation.getOutgoingChatState())); - } - } - } catch (final InvalidJidException ignored) { - - } - - packet.setType(MessagePacket.TYPE_CHAT); - account.getXmppConnection().sendMessagePacket(packet); - } - - @Override - public void messageFromAnotherInstanceReceived(SessionID session) { - sendOtrErrorMessage(session, "Message from another OTR-instance received"); - } - - @Override - public void multipleInstancesDetected(SessionID arg0) { - // TODO Auto-generated method stub - - } - - @Override - public void requireEncryptedMessage(SessionID arg0, String arg1) - throws OtrException { - // TODO Auto-generated method stub - - } - - @Override - public void showError(SessionID arg0, String arg1) throws OtrException { - Logging.d(Config.LOGTAG,"show error"); - } - - @Override - public void smpAborted(SessionID id) throws OtrException { - setSmpStatus(id, Conversation.Smp.STATUS_NONE); - } - - private void setSmpStatus(SessionID id, int status) { - try { - final Jid jid = Jid.fromSessionID(id); - Conversation conversation = this.mXmppConnectionService.find(this.account,jid); - if (conversation!=null) { - conversation.smp().status = status; - mXmppConnectionService.updateConversationUi(); - } - } catch (final InvalidJidException ignored) { - - } - } - - @Override - public void smpError(SessionID id, int arg1, boolean arg2) - throws OtrException { - setSmpStatus(id, Conversation.Smp.STATUS_NONE); - } - - @Override - public void unencryptedMessageReceived(SessionID arg0, String arg1) - throws OtrException { - throw new OtrException(new Exception("unencrypted message received")); - } - - @Override - public void unreadableMessageReceived(SessionID session) throws OtrException { - Logging.d(Config.LOGTAG,"unreadable message received"); - // Hier update des contents fuer FS#96 - sendOtrErrorMessage(session, "You sent me an unreadable OTR-encrypted message"); - } - - public void sendOtrErrorMessage(SessionID session, String errorText) { - try { - Jid jid = Jid.fromSessionID(session); - Conversation conversation = mXmppConnectionService.find(account, jid); - String id = conversation == null ? null : conversation.getLastReceivedOtrMessageId(); - if (id != null) { - MessagePacket packet = mXmppConnectionService.getMessageGenerator() - .generateOtrError(jid, id, errorText); - packet.setFrom(account.getJid()); - mXmppConnectionService.sendMessagePacket(account,packet); - Logging.d(Config.LOGTAG,packet.toString()); - Logging.d(Config.LOGTAG,account.getJid().toBareJid().toString() - +": unreadable OTR message in "+conversation.getName()); - } - } catch (InvalidJidException e) { - return; - } - } - - @Override - public void unverify(SessionID id, String arg1) { - setSmpStatus(id, Conversation.Smp.STATUS_FAILED); - } - - @Override - public void verify(SessionID id, String fingerprint, boolean approved) { - Logging.d(Config.LOGTAG,"OtrService.verify("+id.toString()+","+fingerprint+","+String.valueOf(approved)+")"); - try { - final Jid jid = Jid.fromSessionID(id); - Conversation conversation = this.mXmppConnectionService.find(this.account,jid); - if (conversation!=null) { - if (approved) { - conversation.getContact().addOtrFingerprint(fingerprint); - } - conversation.smp().hint = null; - conversation.smp().status = Conversation.Smp.STATUS_VERIFIED; - mXmppConnectionService.updateConversationUi(); - mXmppConnectionService.syncRosterToDisk(conversation.getAccount()); - } - } catch (final InvalidJidException ignored) { - } - } - - @Override - public FragmenterInstructions getFragmenterInstructions(SessionID sessionID) { - return null; - } - -} |