Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | /**
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| 2 | * $RCSfile$
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| 3 | * $Revision$
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| 4 | * $Date$
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| 5 | *
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| 6 | * Copyright 2003-2007 Jive Software.
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| 7 | *
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| 8 | * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
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| 9 | * you may not use this file except in compliance with the License.
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| 10 | * You may obtain a copy of the License at
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| 11 | *
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| 12 | * http://www.apache.org/licenses/LICENSE-2.0
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| 13 | *
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| 14 | * Unless required by applicable law or agreed to in writing, software
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| 15 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 17 | * See the License for the specific language governing permissions and
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| 18 | * limitations under the License.
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| 19 | */
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| 20 |
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| 21 | package org.jivesoftware.smack;
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| 22 |
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| 23 | import org.jivesoftware.smack.filter.PacketIDFilter;
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| 24 | import org.jivesoftware.smack.packet.Authentication;
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| 25 | import org.jivesoftware.smack.packet.IQ;
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| 26 |
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| 27 | import org.apache.harmony.javax.security.auth.callback.CallbackHandler;
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| 28 | import org.apache.harmony.javax.security.auth.callback.PasswordCallback;
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| 29 | import org.apache.harmony.javax.security.auth.callback.Callback;
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| 30 |
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| 31 | /**
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| 32 | * Implementation of JEP-0078: Non-SASL Authentication. Follow the following
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| 33 | * <a href=http://www.jabber.org/jeps/jep-0078.html>link</a> to obtain more
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| 34 | * information about the JEP.
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| 35 | *
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| 36 | * @author Gaston Dombiak
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| 37 | */
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| 38 | class NonSASLAuthentication implements UserAuthentication {
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| 39 |
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| 40 | private Connection connection;
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| 41 |
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| 42 | public NonSASLAuthentication(Connection connection) {
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| 43 | super();
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| 44 | this.connection = connection;
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| 45 | }
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| 46 |
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| 47 | public String authenticate(String username, String resource, CallbackHandler cbh) throws XMPPException {
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| 48 | //Use the callback handler to determine the password, and continue on.
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| 49 | PasswordCallback pcb = new PasswordCallback("Password: ",false);
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| 50 | try {
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| 51 | cbh.handle(new Callback[]{pcb});
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| 52 | return authenticate(username, String.valueOf(pcb.getPassword()),resource);
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| 53 | } catch (Exception e) {
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| 54 | throw new XMPPException("Unable to determine password.",e);
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| 55 | }
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| 56 | }
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| 57 |
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| 58 | public String authenticate(String username, String password, String resource) throws
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| 59 | XMPPException {
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| 60 | // If we send an authentication packet in "get" mode with just the username,
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| 61 | // the server will return the list of authentication protocols it supports.
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| 62 | Authentication discoveryAuth = new Authentication();
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| 63 | discoveryAuth.setType(IQ.Type.GET);
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| 64 | discoveryAuth.setUsername(username);
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| 65 |
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| 66 | PacketCollector collector =
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| 67 | connection.createPacketCollector(new PacketIDFilter(discoveryAuth.getPacketID()));
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| 68 | // Send the packet
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| 69 | connection.sendPacket(discoveryAuth);
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| 70 | // Wait up to a certain number of seconds for a response from the server.
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| 71 | IQ response = (IQ) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
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| 72 | if (response == null) {
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| 73 | throw new XMPPException("No response from the server.");
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| 74 | }
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| 75 | // If the server replied with an error, throw an exception.
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| 76 | else if (response.getType() == IQ.Type.ERROR) {
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| 77 | throw new XMPPException(response.getError());
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| 78 | }
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| 79 | // Otherwise, no error so continue processing.
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| 80 | Authentication authTypes = (Authentication) response;
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| 81 | collector.cancel();
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| 82 |
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| 83 | // Now, create the authentication packet we'll send to the server.
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| 84 | Authentication auth = new Authentication();
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| 85 | auth.setUsername(username);
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| 86 |
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| 87 | // Figure out if we should use digest or plain text authentication.
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| 88 | if (authTypes.getDigest() != null) {
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| 89 | auth.setDigest(connection.getConnectionID(), password);
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| 90 | }
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| 91 | else if (authTypes.getPassword() != null) {
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| 92 | auth.setPassword(password);
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| 93 | }
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| 94 | else {
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| 95 | throw new XMPPException("Server does not support compatible authentication mechanism.");
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| 96 | }
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| 97 |
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| 98 | auth.setResource(resource);
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| 99 |
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| 100 | collector = connection.createPacketCollector(new PacketIDFilter(auth.getPacketID()));
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| 101 | // Send the packet.
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| 102 | connection.sendPacket(auth);
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| 103 | // Wait up to a certain number of seconds for a response from the server.
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| 104 | response = (IQ) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
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| 105 | if (response == null) {
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| 106 | throw new XMPPException("Authentication failed.");
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| 107 | }
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| 108 | else if (response.getType() == IQ.Type.ERROR) {
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| 109 | throw new XMPPException(response.getError());
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| 110 | }
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| 111 | // We're done with the collector, so explicitly cancel it.
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| 112 | collector.cancel();
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| 113 |
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| 114 | return response.getTo();
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| 115 | }
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| 116 |
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| 117 | public String authenticateAnonymously() throws XMPPException {
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| 118 | // Create the authentication packet we'll send to the server.
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| 119 | Authentication auth = new Authentication();
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| 120 |
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| 121 | PacketCollector collector =
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| 122 | connection.createPacketCollector(new PacketIDFilter(auth.getPacketID()));
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| 123 | // Send the packet.
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| 124 | connection.sendPacket(auth);
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| 125 | // Wait up to a certain number of seconds for a response from the server.
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| 126 | IQ response = (IQ) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
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| 127 | if (response == null) {
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| 128 | throw new XMPPException("Anonymous login failed.");
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| 129 | }
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| 130 | else if (response.getType() == IQ.Type.ERROR) {
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| 131 | throw new XMPPException(response.getError());
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| 132 | }
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| 133 | // We're done with the collector, so explicitly cancel it.
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| 134 | collector.cancel();
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| 135 |
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| 136 | if (response.getTo() != null) {
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| 137 | return response.getTo();
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| 138 | }
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| 139 | else {
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| 140 | return connection.getServiceName() + "/" + ((Authentication) response).getResource();
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| 141 | }
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| 142 | }
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| 143 | }
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