public void savePublicKey(SessionID sessionID, PublicKey pubKey) {
if (sessionID == null) return;
X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(pubKey.getEncoded());
// if (!Address.hasResource(fullUserId))
// return;
this.store.setProperty(
sessionID.getRemoteUserId() + ".publicKey", x509EncodedKeySpec.getEncoded());
// Stash the associated fingerprint. This saves calculating it in the future
// and is useful for transferring rosters to other apps.
try {
String fingerprintString = new OtrCryptoEngineImpl().getFingerprint(pubKey);
String verifiedToken =
buildPublicKeyVerifiedId(sessionID.getRemoteUserId(), fingerprintString.toLowerCase());
if (!this.store.hasProperty(verifiedToken)) this.store.setProperty(verifiedToken, false);
this.store.setPropertyHex(
sessionID.getRemoteUserId() + ".fingerprint", Hex.decode(fingerprintString));
store.save();
} catch (OtrCryptoException e) {
e.printStackTrace();
}
}
@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 (mXmppConnectionService.sendChatStates()) {
packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
}
}
} catch (final InvalidJidException ignored) {
}
packet.setType(MessagePacket.TYPE_CHAT);
account.getXmppConnection().sendMessagePacket(packet);
}
public boolean isVerified(SessionID sessionID) {
if (sessionID == null) return false;
String remoteFingerprint = getRemoteFingerprint(sessionID.getRemoteUserId());
if (remoteFingerprint != null) {
String username = Address.stripResource(sessionID.getRemoteUserId());
String pubKeyVerifiedToken = buildPublicKeyVerifiedId(username, remoteFingerprint);
return this.store.getPropertyBoolean(pubKeyVerifiedToken, false);
} else {
return false;
}
}
public void verify(SessionID sessionID) {
if (sessionID == null) return;
if (this.isVerified(sessionID)) return;
verifyUser(sessionID.getRemoteUserId());
}
@Override
public void verify(SessionID id, String fingerprint, boolean approved) {
Log.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) {
}
}
/**
* Returns the key pair (private and public key) for the local machine
*
* @param sessionID sessionID for currect machine
*/
public KeyPair loadLocalKeyPair(SessionID sessionID) {
if (sessionID == null) return null;
String accountID = sessionID.getAccountID();
// Load Private Key.
byte[] b64PrivKey = this.store.getPropertyBytes(accountID + ".privateKey");
if (b64PrivKey == null) return null;
PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(b64PrivKey);
// Load Public Key.
byte[] b64PubKey = this.store.getPropertyBytes(accountID + ".publicKey");
if (b64PubKey == null) return null;
X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(b64PubKey);
PublicKey publicKey;
PrivateKey privateKey;
// Generate KeyPair.
KeyFactory keyFactory;
try {
keyFactory = KeyFactory.getInstance("DSA");
publicKey = keyFactory.generatePublic(publicKeySpec);
privateKey = keyFactory.generatePrivate(privateKeySpec);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
} catch (InvalidKeySpecException e) {
e.printStackTrace();
return null;
}
return new KeyPair(publicKey, privateKey);
}
/** Removes the verification for the specified sessionID */
public void unverify(SessionID sessionID) {
if (sessionID == null) return;
if (!isVerified(sessionID)) return;
this.store.removeProperty(sessionID.getUserID() + ".publicKey.verified");
for (OtrKeyManagerListener l : listeners) l.verificationStatusChanged(sessionID);
}
@Override
public void sessionStatusChanged(SessionID sessionID) {
if (sessionID
.getRemoteUserId()
.equals(mChatSession.getParticipant().getAddress().getAddress()))
onStatusChanged(mChatSession, OtrChatManager.getInstance().getSessionStatus(sessionID));
}
public void unverify(SessionID sessionID) {
if (sessionID == null) return;
if (!isVerified(sessionID)) return;
unverifyUser(sessionID.getRemoteUserId());
for (OtrKeyManagerListener l : listeners) l.verificationStatusChanged(sessionID);
}
/**
* Stores the public key for a specified user from sessionID
*
* @param sessionID sessionID to identifiy the owner of the key
* @param pubKey the key which should be stored
*/
public void savePublicKey(SessionID sessionID, PublicKey pubKey) {
if (sessionID == null) return;
X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(pubKey.getEncoded());
String userID = sessionID.getUserID();
this.store.setProperty(userID + ".publicKey", x509EncodedKeySpec.getEncoded());
this.store.removeProperty(userID + ".publicKey.verified");
}
@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) {
Log.d(
Config.LOGTAG,
account.getJid().toBareJid() + ": smp in invalid session " + id.toString());
}
}
/**
* Loads the public key for the specified sessionID. If there is no key stored, you will get
* 'null'
*/
public PublicKey loadRemotePublicKey(SessionID sessionID) {
if (sessionID == null) return null;
String userID = sessionID.getUserID();
byte[] b64PubKey = this.store.getPropertyBytes(userID + ".publicKey");
if (b64PubKey == null) return null;
X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(b64PubKey);
// Generate KeyPair.
KeyFactory keyFactory;
try {
keyFactory = KeyFactory.getInstance("DSA");
return keyFactory.generatePublic(publicKeySpec);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
} catch (InvalidKeySpecException e) {
e.printStackTrace();
return null;
}
}
/**
* Generate a local key pair. Be careful. If there is already an key pair, it will override it
*
* @param sessionID the sessionID that is identified with the local machine
*/
public void generateLocalKeyPair(SessionID sessionID) {
if (sessionID == null) return;
String accountID = sessionID.getAccountID();
KeyPair keyPair;
try {
keyPair = KeyPairGenerator.getInstance("DSA").genKeyPair();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return;
}
// Store Public Key.
PublicKey pubKey = keyPair.getPublic();
X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(pubKey.getEncoded());
this.store.setProperty(accountID + ".publicKey", x509EncodedKeySpec.getEncoded());
// Store Private Key.
PrivateKey privKey = keyPair.getPrivate();
PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(privKey.getEncoded());
this.store.setProperty(accountID + ".privateKey", pkcs8EncodedKeySpec.getEncoded());
}
public String getRemoteFingerprint(SessionID sessionID) {
return getRemoteFingerprint(sessionID.getRemoteUserId());
}
/** check if the specified sessionID is verified for this machine */
public boolean isVerified(SessionID sessionID) {
if (sessionID == null) return false;
return this.store.getPropertyBoolean(sessionID.getUserID() + ".publicKey.verified", false);
}
public KeyPair loadLocalKeyPair(SessionID sessionID) {
if (sessionID == null) return null;
return loadLocalKeyPair(sessionID.getLocalUserId());
}
public String getLocalFingerprint(SessionID sessionID) {
return getLocalFingerprint(sessionID.getLocalUserId());
}
public PublicKey loadRemotePublicKey(SessionID sessionID) {
return loadRemotePublicKeyFromStore(sessionID.getRemoteUserId());
}
public void selectPresence(final Conversation conversation, final OnPresenceSelected listener) {
final Contact contact = conversation.getContact();
if (conversation.hasValidOtrSession()) {
SessionID id = conversation.getOtrSession().getSessionID();
Jid jid;
try {
jid = Jid.fromString(id.getAccountID() + "/" + id.getUserID());
} catch (InvalidJidException e) {
jid = null;
}
conversation.setNextCounterpart(jid);
listener.onPresenceSelected();
} else if (!contact.showInRoster()) {
showAddToRosterDialog(conversation);
} else {
Presences presences = contact.getPresences();
if (presences.size() == 0) {
if (!contact.getOption(Contact.Options.TO)
&& !contact.getOption(Contact.Options.ASKING)
&& contact.getAccount().getStatus() == Account.State.ONLINE) {
showAskForPresenceDialog(contact);
} else if (!contact.getOption(Contact.Options.TO)
|| !contact.getOption(Contact.Options.FROM)) {
warnMutalPresenceSubscription(conversation, listener);
} else {
conversation.setNextCounterpart(null);
listener.onPresenceSelected();
}
} else if (presences.size() == 1) {
String presence = presences.asStringArray()[0];
try {
conversation.setNextCounterpart(
Jid.fromParts(
contact.getJid().getLocalpart(), contact.getJid().getDomainpart(), presence));
} catch (InvalidJidException e) {
conversation.setNextCounterpart(null);
}
listener.onPresenceSelected();
} else {
final StringBuilder presence = new StringBuilder();
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(getString(R.string.choose_presence));
final String[] presencesArray = presences.asStringArray();
int preselectedPresence = 0;
for (int i = 0; i < presencesArray.length; ++i) {
if (presencesArray[i].equals(contact.lastseen.presence)) {
preselectedPresence = i;
break;
}
}
presence.append(presencesArray[preselectedPresence]);
builder.setSingleChoiceItems(
presencesArray,
preselectedPresence,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
presence.delete(0, presence.length());
presence.append(presencesArray[which]);
}
});
builder.setNegativeButton(R.string.cancel, null);
builder.setPositiveButton(
R.string.ok,
new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
try {
conversation.setNextCounterpart(
Jid.fromParts(
contact.getJid().getLocalpart(),
contact.getJid().getDomainpart(),
presence.toString()));
} catch (InvalidJidException e) {
conversation.setNextCounterpart(null);
}
listener.onPresenceSelected();
}
});
builder.create().show();
}
}
}
public void generateLocalKeyPair(SessionID sessionID) {
if (sessionID == null) return;
generateLocalKeyPair(sessionID.getLocalUserId());
}
