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-rw-r--r--src/main/java/de/thedevstack/conversationsplus/crypto/OtrService.java308
1 files changed, 0 insertions, 308 deletions
diff --git a/src/main/java/de/thedevstack/conversationsplus/crypto/OtrService.java b/src/main/java/de/thedevstack/conversationsplus/crypto/OtrService.java
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index 34023d9f..00000000
--- a/src/main/java/de/thedevstack/conversationsplus/crypto/OtrService.java
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@@ -1,308 +0,0 @@
-package de.thedevstack.conversationsplus.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 de.thedevstack.conversationsplus.Config;
-import de.thedevstack.conversationsplus.entities.Account;
-import de.thedevstack.conversationsplus.entities.Conversation;
-import de.thedevstack.conversationsplus.generator.MessageGenerator;
-import de.thedevstack.conversationsplus.services.XmppConnectionService;
-import de.thedevstack.conversationsplus.xmpp.chatstate.ChatState;
-import de.thedevstack.conversationsplus.xmpp.jid.InvalidJidException;
-import de.thedevstack.conversationsplus.xmpp.jid.Jid;
-import de.thedevstack.conversationsplus.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;
- }
-
-}