1 /* 2 * Copyright 2005-2009 Sun Microsystems, Inc. All Rights Reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Sun designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Sun in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 22 * CA 95054 USA or visit www.sun.com if you need additional information or 23 * have any questions. 24 */ 25 26 package sun.net.www.protocol.http; 27 import java.io.IOException; 28 import java.net.Authenticator; 29 import java.net.PasswordAuthentication; 30 import java.util.Arrays; 31 import javax.security.auth.callback.Callback; 32 import javax.security.auth.callback.CallbackHandler; 33 import javax.security.auth.callback.NameCallback; 34 import javax.security.auth.callback.PasswordCallback; 35 import javax.security.auth.callback.UnsupportedCallbackException; 36 37 /** 38 * @since 1.6 39 * Special callback handler used in JGSS for the HttpCaller. 40 */ 41 public class NegotiateCallbackHandler implements CallbackHandler { 42 43 private String username; 44 private char[] password; 45 46 private final HttpCallerInfo hci; 47 48 public NegotiateCallbackHandler(HttpCallerInfo hci) { 49 this.hci = hci; 50 } 51 52 public void handle(Callback[] callbacks) throws 53 UnsupportedCallbackException, IOException { 54 for (int i=0; i<callbacks.length; i++) { 55 Callback callBack = callbacks[i]; 56 57 if (callBack instanceof NameCallback) { 58 if (username == null) { 59 PasswordAuthentication passAuth = 60 Authenticator.requestPasswordAuthentication( 61 hci.host, hci.addr, hci.port, hci.protocol, 62 hci.prompt, hci.scheme, hci.url, hci.authType); 63 username = passAuth.getUserName(); 64 password = passAuth.getPassword(); 65 } 66 NameCallback nameCallback = 67 (NameCallback)callBack; 68 nameCallback.setName(username); 69 70 } else if (callBack instanceof PasswordCallback) { 71 PasswordCallback passwordCallback = 72 (PasswordCallback)callBack; 73 if (password == null) { 74 PasswordAuthentication passAuth = 75 Authenticator.requestPasswordAuthentication( 76 hci.host, hci.addr, hci.port, hci.protocol, 77 hci.prompt, hci.scheme, hci.url, hci.authType); 78 username = passAuth.getUserName(); 79 password = passAuth.getPassword(); 80 } 81 passwordCallback.setPassword(password); 82 Arrays.fill(password, ' '); 83 } else { 84 throw new UnsupportedCallbackException(callBack, 85 "Call back not supported"); 86 } 87 } 88 } 89 }