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1: /* 2: * SaslPlain.java 3: * Copyright (C) 2004 The Free Software Foundation 4: * 5: * This file is part of GNU inetlib, a library. 6: * 7: * GNU inetlib is free software; you can redistribute it and/or modify 8: * it under the terms of the GNU General Public License as published by 9: * the Free Software Foundation; either version 2 of the License, or 10: * (at your option) any later version. 11: * 12: * GNU inetlib is distributed in the hope that it will be useful, 13: * but WITHOUT ANY WARRANTY; without even the implied warranty of 14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15: * GNU General Public License for more details. 16: * 17: * You should have received a copy of the GNU General Public License 18: * along with this library; if not, write to the Free Software 19: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20: * 21: * Linking this library statically or dynamically with other modules is 22: * making a combined work based on this library. Thus, the terms and 23: * conditions of the GNU General Public License cover the whole 24: * combination. 25: * 26: * As a special exception, the copyright holders of this library give you 27: * permission to link this library with independent modules to produce an 28: * executable, regardless of the license terms of these independent 29: * modules, and to copy and distribute the resulting executable under 30: * terms of your choice, provided that you also meet, for each linked 31: * independent module, the terms and conditions of the license of that 32: * module. An independent module is a module which is not derived from 33: * or based on this library. If you modify this library, you may extend 34: * this exception to your version of the library, but you are not 35: * obliged to do so. If you do not wish to do so, delete this 36: * exception statement from your version. 37: */ 38: 39: package gnu.inet.util; 40: 41: import java.io.UnsupportedEncodingException; 42: import javax.security.sasl.SaslClient; 43: import javax.security.sasl.SaslException; 44: 45: /** 46: * SASL mechanism for PLAIN. 47: * 48: * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> 49: */ 50: public class SaslPlain 51: implements SaslClient 52: { 53: 54: private String username; 55: private String password; 56: private boolean complete; 57: 58: public SaslPlain(String username, String password) 59: { 60: this.username = username; 61: this.password = password; 62: } 63: 64: public String getMechanismName() 65: { 66: return "PLAIN"; 67: } 68: 69: public boolean hasInitialResponse() 70: { 71: return true; 72: } 73: 74: public byte[] evaluateChallenge(byte[] challenge) 75: throws SaslException 76: { 77: try 78: { 79: byte[] a = username.getBytes("UTF-8"); 80: byte[] b = password.getBytes("UTF-8"); 81: byte[] c = new byte[(a.length * 2) + b.length + 2]; 82: System.arraycopy(a, 0, c, 0, a.length); 83: System.arraycopy(a, 0, c, a.length + 1, a.length); 84: System.arraycopy(b, 0, c, (a.length * 2) + 2, b.length); 85: complete = true; 86: return c; 87: } 88: catch (UnsupportedEncodingException e) 89: { 90: String msg = "Username or password contains illegal UTF-8"; 91: throw new SaslException(msg, e); 92: } 93: } 94: 95: public boolean isComplete() 96: { 97: return complete; 98: } 99: 100: public byte[] unwrap(byte[] incoming, int off, int len) 101: throws SaslException 102: { 103: byte[] ret = new byte[len - off]; 104: System.arraycopy(incoming, off, ret, 0, len); 105: return ret; 106: } 107: 108: public byte[] wrap(byte[] outgoing, int off, int len) 109: throws SaslException 110: { 111: byte[] ret = new byte[len - off]; 112: System.arraycopy(outgoing, off, ret, 0, len); 113: return ret; 114: } 115: 116: public Object getNegotiatedProperty(String name) 117: { 118: return null; 119: } 120: 121: public void dispose() 122: { 123: } 124: 125: }