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jeremybenn |
/* CramMD5AuthInfoProvider.java --
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Copyright (C) 2003, 2006 Free Software Foundation, Inc.
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This file is a part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.crypto.sasl.crammd5;
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import gnu.java.security.Registry;
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import gnu.javax.crypto.sasl.IAuthInfoProvider;
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import gnu.javax.crypto.sasl.NoSuchUserException;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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import javax.security.sasl.AuthenticationException;
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/**
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* The CRAM-MD5 mechanism authentication information provider implementation.
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*/
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public class CramMD5AuthInfoProvider
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implements IAuthInfoProvider
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{
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private PasswordFile passwordFile = null;
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// implicit 0-args constrcutor
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public void activate(Map context) throws AuthenticationException
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{
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try
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{
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if (context == null)
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passwordFile = new PasswordFile();
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else
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{
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String pfn = (String) context.get(CramMD5Registry.PASSWORD_FILE);
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if (pfn == null)
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passwordFile = new PasswordFile();
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else
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passwordFile = new PasswordFile(pfn);
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}
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}
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catch (IOException x)
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{
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throw new AuthenticationException("activate()", x);
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}
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}
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public void passivate() throws AuthenticationException
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{
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passwordFile = null;
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}
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public boolean contains(String userName) throws AuthenticationException
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{
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if (passwordFile == null)
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throw new AuthenticationException("contains()",
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new IllegalStateException());
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boolean result = false;
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try
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{
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result = passwordFile.contains(userName);
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}
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catch (IOException x)
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{
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throw new AuthenticationException("contains()", x);
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}
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return result;
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}
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public Map lookup(Map userID) throws AuthenticationException
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{
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if (passwordFile == null)
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throw new AuthenticationException("lookup()", new IllegalStateException());
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Map result = new HashMap();
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try
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{
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String userName = (String) userID.get(Registry.SASL_USERNAME);
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if (userName == null)
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throw new NoSuchUserException("");
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String[] data = passwordFile.lookup(userName);
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result.put(Registry.SASL_USERNAME, data[0]);
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result.put(Registry.SASL_PASSWORD, data[1]);
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result.put(CramMD5Registry.UID_FIELD, data[2]);
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result.put(CramMD5Registry.GID_FIELD, data[3]);
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result.put(CramMD5Registry.GECOS_FIELD, data[4]);
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result.put(CramMD5Registry.DIR_FIELD, data[5]);
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result.put(CramMD5Registry.SHELL_FIELD, data[6]);
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}
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catch (Exception x)
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{
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if (x instanceof AuthenticationException)
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throw (AuthenticationException) x;
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throw new AuthenticationException("lookup()", x);
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}
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return result;
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}
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public void update(Map userCredentials) throws AuthenticationException
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{
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if (passwordFile == null)
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throw new AuthenticationException("update()", new IllegalStateException());
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try
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{
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String userName = (String) userCredentials.get(Registry.SASL_USERNAME);
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String password = (String) userCredentials.get(Registry.SASL_PASSWORD);
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String uid = (String) userCredentials.get(CramMD5Registry.UID_FIELD);
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String gid = (String) userCredentials.get(CramMD5Registry.GID_FIELD);
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String gecos = (String) userCredentials.get(CramMD5Registry.GECOS_FIELD);
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String dir = (String) userCredentials.get(CramMD5Registry.DIR_FIELD);
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String shell = (String) userCredentials.get(CramMD5Registry.SHELL_FIELD);
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if (uid == null || gid == null || gecos == null || dir == null
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|| shell == null)
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passwordFile.changePasswd(userName, password);
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else
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{
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String[] attributes = new String[] { uid, gid, gecos, dir, shell };
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passwordFile.add(userName, password, attributes);
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}
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}
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catch (Exception x)
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{
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if (x instanceof AuthenticationException)
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throw (AuthenticationException) x;
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throw new AuthenticationException("update()", x);
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}
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}
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public Map getConfiguration(String mode) throws AuthenticationException
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{
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throw new AuthenticationException("", new UnsupportedOperationException());
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}
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}
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