GSSAPI work by Jay Kline (SMACK-218).

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@8155 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
Matt Tucker 2007-05-02 23:11:10 +00:00 committed by matt
parent 6150c72ca7
commit eb56f8a557
3 changed files with 263 additions and 2 deletions

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@ -27,6 +27,7 @@ import org.jivesoftware.smack.packet.Session;
import org.jivesoftware.smack.sasl.SASLAnonymous;
import org.jivesoftware.smack.sasl.SASLMechanism;
import org.jivesoftware.smack.sasl.SASLPlainMechanism;
import org.jivesoftware.smack.sasl.SASLGSSAPIMechanism;
import java.io.IOException;
import java.lang.reflect.Constructor;
@ -79,7 +80,8 @@ public class SASLAuthentication implements UserAuthentication {
static {
// Register SASL mechanisms supported by Smack
registerSASLMechanism(0, "PLAIN", SASLPlainMechanism.class);
registerSASLMechanism(0, "GSSAPI", SASLGSSAPIMechanism.class);
registerSASLMechanism(1, "PLAIN", SASLPlainMechanism.class);
}
/**

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@ -0,0 +1,258 @@
/**
* $RCSfile$
* $Revision: $
* $Date: $
*
*
* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.smack.sasl;
import javax.security.sasl.*;
import java.util.*;
import java.io.IOException;
import org.jivesoftware.smack.SASLAuthentication;
import org.jivesoftware.smack.util.Base64;
/**
* Implementation of the SASL GSSAPI mechanisn
*
*
* @author Jay Kline
*/
public class SASLGSSAPIMechanism extends SASLMechanism {
private static final String protocol = "xmpp";
private static final String[] mechanisms = {"GSSAPI"};
private SaslClient sc;
public SASLGSSAPIMechanism(SASLAuthentication saslAuthentication) {
super(saslAuthentication);
System.setProperty("java.security.krb5.debug","true");
System.setProperty("javax.security.auth.useSubjectCredsOnly","false");
System.setProperty("java.security.auth.login.config","gss.conf");
}
protected String getName() {
return "GSSAPI";
}
/**
* Builds and sends the <tt>auth</tt> stanza to the server.
* This overrides from the abstract class because the initial token
* needed for GSSAPI is binary, and not safe to put in a string, thus
* getAuthenticationText() cannot be used.
*
* @param username the username of the user being authenticated.
* @param host the hostname where the user account resides.
* @param password the password of the user (ignored for GSSAPI)
* @throws IOException If a network error occures while authenticating.
*/
public void authenticate(String username, String host, String password) throws IOException {
// Build the authentication stanza encoding the authentication text
StringBuffer stanza = new StringBuffer();
Map props = new HashMap();
sc = Sasl.createSaslClient(mechanisms, username, protocol, host, props, null);
stanza.append("<auth mechanism=\"").append(getName());
stanza.append("\" xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">");
if(sc.hasInitialResponse()) {
byte[] response = sc.evaluateChallenge(new byte[0]);
String authenticationText = Base64.encodeBytes(response,Base64.DONT_BREAK_LINES);
if(authenticationText != null && !authenticationText.equals("")) {
stanza.append(authenticationText);
}
}
stanza.append("</auth>");
// Send the authentication to the server
getSASLAuthentication().send(stanza.toString());
}
protected String getAuthenticationText(String username, String host, String password) {
// Unused, see authenticate
return null;
}
/**
* The server is challenging the SASL mechanism for the stanza he just sent. Send a
* response to the server's challenge. This overrieds from the abstract class because the
* tokens needed for GSSAPI are binary, and not safe to put in a string, thus
* getChallengeResponse() cannot be used.
*
* @param challenge a base64 encoded string representing the challenge.
*/
public void challengeReceived(String challenge) throws IOException {
// Build the challenge response stanza encoding the response text
StringBuffer stanza = new StringBuffer();
byte response[];
if(challenge != null) {
response = sc.evaluateChallenge(Base64.decode(challenge));
} else {
response = sc.evaluateChallenge(null);
}
String authenticationText = Base64.encodeBytes(response,Base64.DONT_BREAK_LINES);
if(authenticationText.equals("")) {
authenticationText = "=";
}
stanza.append("<response xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">");
stanza.append(authenticationText);
stanza.append("</response>");
// Send the authentication to the server
getSASLAuthentication().send(stanza.toString());
}
protected String getChallengeResponse(byte[] bytes) {
// Unused, see challengeReceived
return null;
}
}
/**
* $RCSfile$
* $Revision: $
* $Date: $
*
*
* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.smack.sasl;
import javax.security.sasl.*;
import java.util.*;
import java.io.IOException;
import org.jivesoftware.smack.SASLAuthentication;
import org.jivesoftware.smack.util.Base64;
/**
* Implementation of the SASL GSSAPI mechanisn
*
*
* @author Jay Kline
*/
public class SASLGSSAPIMechanism extends SASLMechanism {
private static final String protocol = "xmpp";
private static final String[] mechanisms = {"GSSAPI"};
private SaslClient sc;
public SASLGSSAPIMechanism(SASLAuthentication saslAuthentication) {
super(saslAuthentication);
System.setProperty("java.security.krb5.debug","true");
System.setProperty("javax.security.auth.useSubjectCredsOnly","false");
System.setProperty("java.security.auth.login.config","gss.conf");
}
protected String getName() {
return "GSSAPI";
}
/**
* Builds and sends the <tt>auth</tt> stanza to the server.
* This overrides from the abstract class because the initial token
* needed for GSSAPI is binary, and not safe to put in a string, thus
* getAuthenticationText() cannot be used.
*
* @param username the username of the user being authenticated.
* @param host the hostname where the user account resides.
* @param password the password of the user (ignored for GSSAPI)
* @throws IOException If a network error occures while authenticating.
*/
public void authenticate(String username, String host, String password) throws IOException {
// Build the authentication stanza encoding the authentication text
StringBuffer stanza = new StringBuffer();
Map props = new HashMap();
sc = Sasl.createSaslClient(mechanisms, username, protocol, host, props, null);
stanza.append("<auth mechanism=\"").append(getName());
stanza.append("\" xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">");
if(sc.hasInitialResponse()) {
byte[] response = sc.evaluateChallenge(new byte[0]);
String authenticationText = Base64.encodeBytes(response,Base64.DONT_BREAK_LINES);
if(authenticationText != null && !authenticationText.equals("")) {
stanza.append(authenticationText);
}
}
stanza.append("</auth>");
// Send the authentication to the server
getSASLAuthentication().send(stanza.toString());
}
protected String getAuthenticationText(String username, String host, String password) {
// Unused, see authenticate
return null;
}
/**
* The server is challenging the SASL mechanism for the stanza he just sent. Send a
* response to the server's challenge. This overrieds from the abstract class because the
* tokens needed for GSSAPI are binary, and not safe to put in a string, thus
* getChallengeResponse() cannot be used.
*
* @param challenge a base64 encoded string representing the challenge.
*/
public void challengeReceived(String challenge) throws IOException {
// Build the challenge response stanza encoding the response text
StringBuffer stanza = new StringBuffer();
byte response[];
if(challenge != null) {
response = sc.evaluateChallenge(Base64.decode(challenge));
} else {
response = sc.evaluateChallenge(null);
}
String authenticationText = Base64.encodeBytes(response,Base64.DONT_BREAK_LINES);
if(authenticationText.equals("")) {
authenticationText = "=";
}
stanza.append("<response xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">");
stanza.append(authenticationText);
stanza.append("</response>");
// Send the authentication to the server
getSASLAuthentication().send(stanza.toString());
}
protected String getChallengeResponse(byte[] bytes) {
// Unused, see challengeReceived
return null;
}
}

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@ -44,7 +44,7 @@ package org.jivesoftware.smack.util;
* @author rob@iharder.net
* @version 2.1
*/
class Base64 {
public class Base64 {
/* ******** P U B L I C F I E L D S ******** */
@ -1442,3 +1442,4 @@ class Base64 {
} // end class Base64