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    1   /* Copyright 2004, 2005 Acegi Technology Pty Limited
    2    *
    3    * Licensed under the Apache License, Version 2.0 (the "License");
    4    * you may not use this file except in compliance with the License.
    5    * You may obtain a copy of the License at
    6    *
    7    *     http://www.apache.org/licenses/LICENSE-2.0
    8    *
    9    * Unless required by applicable law or agreed to in writing, software
    10   * distributed under the License is distributed on an "AS IS" BASIS,
    11   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12   * See the License for the specific language governing permissions and
    13   * limitations under the License.
    14   */
    15
    16  package org.acegisecurity.ui.x509;
    17
    18  import org.acegisecurity.intercept.web.AuthenticationEntryPoint;
    19  import org.acegisecurity.AuthenticationException;
    20
    21  import javax.servlet.ServletRequest;
    22  import javax.servlet.ServletResponse;
    23  import javax.servlet.ServletException;
    24  import javax.servlet.http.HttpServletResponse;
    25  import java.io.IOException;
    26
    27  import org.apache.commons.logging.Log;
    28  import org.apache.commons.logging.LogFactory;
    29
    30  /***
    31   * In the X.509 authentication case (unlike CAS, for example) the certificate will already
    32   * have been extracted from the request and a secure context established by the time
    33   * the security-enforcement filter is invoked.
    34   * <p>
    35   * Therefore this class isn't actually responsible for the commencement of authentication, as it
    36   * is in the case of other providers. It will be called if the certificate was rejected by
    37   * Acegi's X509AuthenticationProvider, resulting in a null authentication.
    38   * </p>
    39   * The <code>commence</code> method will always return an
    40   * <code>HttpServletResponse.SC_FORBIDDEN</code> (403 error).
    41   *
    42   *
    43   * @author Luke Taylor
    44   * @version $Id: X509ProcessingFilterEntryPoint.java,v 1.5 2005/11/17 00:56:28 benalex Exp $
    45   * @see org.acegisecurity.intercept.web.SecurityEnforcementFilter
    46   */
    47  public class X509ProcessingFilterEntryPoint implements AuthenticationEntryPoint {
    48      //~ Static fields/initializers =============================================
    49
    50      private static final Log logger = LogFactory.getLog(X509ProcessingFilterEntryPoint.class);
    51
    52      //~ Methods ================================================================
    53
    54      /***
    55       * Returns a 403 error code to the client.
    56       */
    57      public void commence(ServletRequest request, ServletResponse response, AuthenticationException authException) throws IOException, ServletException {
    58          logger.debug("X509 entry point called. Rejecting access");
    59          HttpServletResponse httpResponse = (HttpServletResponse)response;
    60          httpResponse.sendError(HttpServletResponse.SC_FORBIDDEN, "Access Denied");
    61      }
    62  }