/*
* Tigase Jabber/XMPP Server
* Copyright (C) 2004-2007 "Artur Hefczyc" <artur.hefczyc@tigase.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. Look for COPYING file in the top folder.
* If not, see http://www.gnu.org/licenses/.
*
* $Rev: 853 $
* Last modified by $Author: kobit $
* $Date: 2008-02-14 10:22:27 +0000 (Thu, 14 Feb 2008) $
*/
package tigase.db;
import java.io.IOException;
import java.security.NoSuchAlgorithmException;
import java.util.Map;
import java.util.TreeMap;
import java.util.logging.Logger;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.sasl.AuthorizeCallback;
import javax.security.sasl.RealmCallback;
import javax.security.sasl.Sasl;
import javax.security.sasl.SaslException;
import javax.security.sasl.SaslServer;
import tigase.util.Base64;
import tigase.util.Algorithms;
import tigase.util.JIDUtils;
import static tigase.db.UserAuthRepository.*;
/**
* Describe class UserAuthRepositoryImpl here.
*
*
* Created: Sat Nov 11 21:46:50 2006
*
* @author <a href="mailto:artur.hefczyc@tigase.org">Artur Hefczyc</a>
* @version $Rev: 853 $
*/
public class UserAuthRepositoryImpl implements UserAuthRepository {
private static final Logger log =
Logger.getLogger("tigase.db.UserAuthRepositoryImpl");
private static final String PASSWORD_KEY = "password";
private static final String[] non_sasl_mechs = {
"password"
, "digest"
};
private static final String[] sasl_mechs =
{
"PLAIN"
, "DIGEST-MD5"
, "CRAM-MD5"
};
private UserRepository repo = null;
/**
* Creates a new <code>UserAuthRepositoryImpl</code> instance.
*
*/
public UserAuthRepositoryImpl(UserRepository repo) {
this.repo = repo;
}
public String getResourceUri() { return repo.getResourceUri(); }
private String getPassword(final String user)
throws UserNotFoundException, TigaseDBException {
return repo.getData(user, PASSWORD_KEY);
}
// Implementation of tigase.db.UserAuthRepository
/**
* Describe <code>queryAuth</code> method here.
*
* @param authProps a <code>Map</code> value
*/
public void queryAuth(final Map<String, Object> authProps) {
String protocol = (String)authProps.get(PROTOCOL_KEY);
if (protocol.equals(PROTOCOL_VAL_NONSASL)) {
authProps.put(RESULT_KEY, non_sasl_mechs);
} // end of if (protocol.equals(PROTOCOL_VAL_NONSASL))
if (protocol.equals(PROTOCOL_VAL_SASL)) {
authProps.put(RESULT_KEY, sasl_mechs);
} // end of if (protocol.equals(PROTOCOL_VAL_NONSASL))
}
/**
* Describe <code>initRepository</code> method here.
*
* @param string a <code>String</code> value
* @exception DBInitException if an error occurs
*/
public void initRepository(final String string, Map<String, String> params)
throws DBInitException { }
/**
* Describe <code>plainAuth</code> method here.
*
* @param user a <code>String</code> value
* @param password a <code>String</code> value
* @return a <code>boolean</code> value
* @exception UserNotFoundException if an error occurs
* @exception TigaseDBException if an error occurs
*/
public boolean plainAuth(final String user, final String password)
throws UserNotFoundException, TigaseDBException {
String db_password = getPassword(user);
return password != null && db_password != null &&
db_password.equals(password);
}
/**
* Describe <code>digestAuth</code> method here.
*
* @param user a <code>String</code> value
* @param digest a <code>String</code> value
* @param id a <code>String</code> value
* @param alg a <code>String</code> value
* @return a <code>boolean</code> value
* @exception UserNotFoundException if an error occurs
* @exception TigaseDBException if an error occurs
* @exception AuthorizationException if an error occurs
*/
public boolean digestAuth(final String user, final String digest,
final String id, final String alg)
throws UserNotFoundException, TigaseDBException, AuthorizationException {
final String db_password = getPassword(user);
try {
final String digest_db_pass = Algorithms.hexDigest(id, db_password, alg);
log.finest("Comparing passwords, given: " + digest
+ ", db: " + digest_db_pass);
return digest.equals(digest_db_pass);
} catch (NoSuchAlgorithmException e) {
throw new AuthorizationException("No such algorithm.", e);
} // end of try-catch
}
/**
* Describe <code>otherAuth</code> method here.
*
* @param props a <code>Map</code> value
* @return a <code>boolean</code> value
* @exception UserNotFoundException if an error occurs
* @exception TigaseDBException if an error occurs
* @exception AuthorizationException if an error occurs
*/
public boolean otherAuth(final Map<String, Object> props)
throws UserNotFoundException, TigaseDBException, AuthorizationException {
String proto = (String)props.get(PROTOCOL_KEY);
if (proto.equals(PROTOCOL_VAL_SASL)) {
return saslAuth(props);
} // end of if (proto.equals(PROTOCOL_VAL_SASL))
throw new AuthorizationException("Protocol is not supported.");
}
public void logout(final String user) {}
/**
* Describe <code>addUser</code> method here.
*
* @param user a <code>String</code> value
* @param password a <code>String</code> value
* @exception UserExistsException if an error occurs
* @exception TigaseDBException if an error occurs
*/
public void addUser(final String user, final String password)
throws UserExistsException, TigaseDBException {
repo.addUser(user);
log.info("Repo user added: " + user);
updatePassword(user, password);
log.info("Password updated: " + user + ":" + password);
}
/**
* Describe <code>updatePassword</code> method here.
*
* @param user a <code>String</code> value
* @param password a <code>String</code> value
* @exception UserExistsException if an error occurs
* @exception TigaseDBException if an error occurs
*/
public void updatePassword(final String user, final String password)
throws TigaseDBException {
repo.setData(user, PASSWORD_KEY, password);
}
/**
* Describe <code>removeUser</code> method here.
*
* @param user a <code>String</code> value
* @exception UserNotFoundException if an error occurs
* @exception TigaseDBException if an error occurs
*/
public void removeUser(final String user)
throws UserNotFoundException, TigaseDBException {
repo.removeUser(user);
}
private boolean saslAuth(final Map<String, Object> props)
throws AuthorizationException {
try {
SaslServer ss = (SaslServer)props.get("SaslServer");
if (ss == null) {
Map<String, String> sasl_props = new TreeMap<String, String>();
sasl_props.put(Sasl.QOP, "auth");
ss = Sasl.createSaslServer((String)props.get(MACHANISM_KEY),
"xmpp", (String)props.get(SERVER_NAME_KEY),
sasl_props, new SaslCallbackHandler(props));
props.put("SaslServer", ss);
} // end of if (ss == null)
String data_str = (String)props.get(DATA_KEY);
byte[] in_data =
(data_str != null ? Base64.decode(data_str) : new byte[0]);
log.finest("response: " + new String(in_data));
byte[] challenge = ss.evaluateResponse(in_data);
log.finest("challenge: " +
(challenge != null ? new String(challenge) : "null"));
String challenge_str = (challenge != null && challenge.length > 0
? Base64.encode(challenge) : null);
props.put(RESULT_KEY, challenge_str);
if (ss.isComplete()) {
return true;
} else {
return false;
} // end of if (ss.isComplete()) else
} catch (SaslException e) {
throw new AuthorizationException("Sasl exception.", e);
} // end of try-catch
}
private class SaslCallbackHandler implements CallbackHandler {
private Map<String, Object> options = null;
private SaslCallbackHandler(final Map<String, Object> options) {
this.options = options;
}
// Implementation of javax.security.auth.callback.CallbackHandler
/**
* Describe <code>handle</code> method here.
*
* @param callbacks a <code>Callback[]</code> value
* @exception IOException if an error occurs
* @exception UnsupportedCallbackException if an error occurs
*/
public void handle(final Callback[] callbacks)
throws IOException, UnsupportedCallbackException {
String jid = null;
for (int i = 0; i < callbacks.length; i++) {
log.finest("Callback: " + callbacks[i].getClass().getSimpleName());
if (callbacks[i] instanceof RealmCallback) {
RealmCallback rc = (RealmCallback)callbacks[i];
String realm = (String)options.get(REALM_KEY);
if (realm != null) {
rc.setText(realm);
} // end of if (realm == null)
log.finest("RealmCallback: " + realm);
} else if (callbacks[i] instanceof NameCallback) {
NameCallback nc = (NameCallback)callbacks[i];
String user_name = nc.getName();
if (user_name == null) {
user_name = nc.getDefaultName();
} // end of if (name == null)
jid = JIDUtils.getNodeID(user_name, (String)options.get(REALM_KEY));
options.put(USER_ID_KEY, jid);
log.finest("NameCallback: " + user_name);
} else if (callbacks[i] instanceof PasswordCallback) {
PasswordCallback pc = (PasswordCallback)callbacks[i];
try {
String passwd = getPassword(jid);
pc.setPassword(passwd.toCharArray());
log.finest("PasswordCallback: " + passwd);
} catch (Exception e) {
throw new IOException("Password retrieving problem.", e);
} // end of try-catch
} else if (callbacks[i] instanceof AuthorizeCallback) {
AuthorizeCallback authCallback = ((AuthorizeCallback)callbacks[i]);
String authenId = authCallback.getAuthenticationID();
log.finest("AuthorizeCallback: authenId: " + authenId);
String authorId = authCallback.getAuthorizationID();
log.finest("AuthorizeCallback: authorId: " + authorId);
if (authenId.equals(authorId)) {
authCallback.setAuthorized(true);
} // end of if (authenId.equals(authorId))
} else {
throw new UnsupportedCallbackException
(callbacks[i], "Unrecognized Callback");
}
}
}
}
} // UserAuthRepositoryImpl