001/** 002 * 003 * Copyright © 2014 Daniele Ricci 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.jivesoftware.smack.sasl.provided; 018 019import javax.security.auth.callback.CallbackHandler; 020 021import org.jivesoftware.smack.SmackException; 022import org.jivesoftware.smack.sasl.SASLMechanism; 023import org.jivesoftware.smack.util.StringUtils; 024 025import org.jxmpp.util.XmppStringUtils; 026 027/** 028 * Implementation of the SASL-EXTERNAL authentication mechanism. 029 * 030 * @author Daniele Ricci 031 */ 032public class SASLExternalMechanism extends SASLMechanism { 033 034 public static final String NAME = EXTERNAL; 035 036 @Override 037 protected void authenticateInternal(CallbackHandler cbh) throws SmackException { 038 // Do nothing. Auth will be done external to Smack and which will receive the localpart 039 // after the resource binding 040 } 041 042 @Override 043 protected byte[] getAuthenticationText() throws SmackException { 044 if (authorizationId != null) { 045 return toBytes(authorizationId.toString()); 046 } 047 048 if (StringUtils.isNullOrEmpty(authenticationId)) { 049 return null; 050 } 051 052 return toBytes(XmppStringUtils.completeJidFrom(authenticationId, serviceName)); 053 } 054 055 @Override 056 public String getName() { 057 return NAME; 058 } 059 060 @Override 061 public int getPriority() { 062 return 510; 063 } 064 065 @Override 066 protected SASLMechanism newInstance() { 067 return new SASLExternalMechanism(); 068 } 069 070 @Override 071 public void checkIfSuccessfulOrThrow() throws SmackException { 072 // No check performed 073 } 074 075 @Override 076 public boolean authzidSupported() { 077 return true; 078 } 079 080}