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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [gnu/] [javax/] [crypto/] [sasl/] [plain/] [PlainClient.java] - Blame information for rev 769

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1 769 jeremybenn
/* PlainClient.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.plain;
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import gnu.java.lang.CPStringBuilder;
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import gnu.java.security.Registry;
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import gnu.javax.crypto.sasl.ClientMechanism;
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import javax.security.sasl.SaslClient;
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import javax.security.sasl.SaslException;
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import javax.security.auth.callback.Callback;
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import javax.security.auth.callback.NameCallback;
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import javax.security.auth.callback.PasswordCallback;
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/**
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 * The PLAIN SASL client-side mechanism.
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 */
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public class PlainClient
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    extends ClientMechanism
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    implements SaslClient
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{
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  public PlainClient()
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  {
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    super(Registry.SASL_PLAIN_MECHANISM);
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  }
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  protected void initMechanism() throws SaslException
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  {
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  }
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  protected void resetMechanism() throws SaslException
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  {
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  }
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  public boolean hasInitialResponse()
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  {
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    return true;
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  }
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  public byte[] evaluateChallenge(final byte[] challenge) throws SaslException
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  {
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    try
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      {
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        final String username;
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        final char[] password;
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        Callback[] callbacks;
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        if ((! properties.containsKey(Registry.SASL_USERNAME))
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            && (! properties.containsKey(Registry.SASL_PASSWORD)))
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          {
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            callbacks = new Callback[2];
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            final NameCallback nameCB;
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            final String defaultName = System.getProperty("user.name");
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            if (defaultName == null)
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              nameCB = new NameCallback("username: ");
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            else
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              nameCB = new NameCallback("username: ", defaultName);
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            final PasswordCallback pwdCB = new PasswordCallback("password: ",
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                                                                false);
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            callbacks[0] = nameCB;
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            callbacks[1] = pwdCB;
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            this.handler.handle(callbacks);
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            username = nameCB.getName();
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            password = pwdCB.getPassword();
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          }
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        else
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          {
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            if (properties.containsKey(Registry.SASL_USERNAME))
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              username = (String) properties.get(Registry.SASL_USERNAME);
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            else
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              {
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                callbacks = new Callback[1];
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                final NameCallback nameCB;
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                final String defaultName = System.getProperty("user.name");
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                if (defaultName == null)
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                  nameCB = new NameCallback("username: ");
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                else
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                  nameCB = new NameCallback("username: ", defaultName);
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                callbacks[0] = nameCB;
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                this.handler.handle(callbacks);
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                username = nameCB.getName();
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              }
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            if (properties.containsKey(Registry.SASL_PASSWORD))
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              password = ((String) properties.get(Registry.SASL_PASSWORD)).toCharArray();
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            else
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              {
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                callbacks = new Callback[1];
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                final PasswordCallback pwdCB = new PasswordCallback("password: ",
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                                                                    false);
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                callbacks[0] = pwdCB;
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                this.handler.handle(callbacks);
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                password = pwdCB.getPassword();
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              }
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          }
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        if (password == null)
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          throw new SaslException("null password supplied");
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        final CPStringBuilder sb = new CPStringBuilder();
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        if (authorizationID != null)
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          sb.append(authorizationID);
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        sb.append('\0');
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        sb.append(username);
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        sb.append('\0');
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        sb.append(password);
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        this.complete = true;
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        final byte[] response = sb.toString().getBytes("UTF-8");
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        return response;
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      }
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    catch (Exception x)
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      {
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        if (x instanceof SaslException)
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          throw (SaslException) x;
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        throw new SaslException("evaluateChallenge()", x);
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      }
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  }
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  protected String getNegotiatedQOP()
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  {
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    return Registry.QOP_AUTH;
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  }
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}

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