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    1   /*
    2    * Copyright 2006 University Corporation for Advanced Internet Development, Inc.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    * http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16
    17  package edu.internet2.middleware.shibboleth.idp.authn.provider;
    18
    19  import java.io.IOException;
    20
    21  import javax.servlet.http.HttpServletRequest;
    22  import javax.servlet.http.HttpServletResponse;
    23
    24  import org.opensaml.util.URLBuilder;
    25  import org.slf4j.Logger;
    26  import org.slf4j.LoggerFactory;
    27
    28  /**
    29   * Authenticate a username and password against a JAAS source.
    30   *
    31   * This login handler creates a {@link javax.security.auth.Subject} and binds it to the request as described in the
    32   * {@link edu.internet2.middleware.shibboleth.idp.authn.LoginHandler} documentation. If the JAAS module does not create
    33   * a principal for the user a {@link edu.internet2.middleware.shibboleth.idp.authn.UsernamePrincipal} is created, using the
    34   * entered username. If the <code>storeCredentialsInSubject</code> init parameter of the authentication servlet is set
    35   * to true a {@link UsernamePasswordCredential} is created, based on the entered username and password, and stored in
    36   * the Subject's private credentials.
    37   */
    38  public class UsernamePasswordLoginHandler extends AbstractLoginHandler {
    39
    40      /** Class logger. */
    41      private final Logger log = LoggerFactory.getLogger(UsernamePasswordLoginHandler.class);
    42
    43      /** The URL of the servlet used to perform authentication. */
    44      private String authenticationServletURL;
    45
    46      /**
    47       * Constructor.
    48       *
    49       * @param servletURL URL to the authentication servlet
    50       */
    51      public UsernamePasswordLoginHandler(String servletURL) {
    52          super();
    53          setSupportsPassive(false);
    54          setSupportsForceAuthentication(true);
    55          authenticationServletURL = servletURL;
    56      }
    57
    58      /** {@inheritDoc} */
    59      public void login(final HttpServletRequest httpRequest, final HttpServletResponse httpResponse) {
    60          // forward control to the servlet.
    61          try {
    62              StringBuilder pathBuilder = new StringBuilder();
    63              pathBuilder.append(httpRequest.getContextPath());
    64              if (!authenticationServletURL.startsWith("/")) {
    65                  pathBuilder.append("/");
    66              }
    67              pathBuilder.append(authenticationServletURL);
    68
    69              URLBuilder urlBuilder = new URLBuilder();
    70              urlBuilder.setScheme(httpRequest.getScheme());
    71              urlBuilder.setHost(httpRequest.getServerName());
    72              urlBuilder.setPort(httpRequest.getServerPort());
    73              urlBuilder.setPath(pathBuilder.toString());
    74
    75              log.debug("Redirecting to {}", urlBuilder.buildURL());
    76              httpResponse.sendRedirect(urlBuilder.buildURL());
    77              return;
    78          } catch (IOException ex) {
    79              log.error("Unable to redirect to authentication servlet.", ex);
    80          }
    81
    82      }
    83  }