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Posted to dev@commons.apache.org by ol...@apache.org on 2003/12/10 22:37:42 UTC

cvs commit: jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/auth AuthPolicy.java

olegk       2003/12/10 13:37:42

  Modified:    httpclient/src/java/org/apache/commons/httpclient
                        HttpMethodBase.java
  Added:       httpclient/src/java/org/apache/commons/httpclient/auth
                        AuthPolicy.java
  Log:
  Forgot to add new file prior to committing stuff (as always). *sigh*
  
  Changelog:
  
  * Another attempt at fixing NTLM proxy + basic host authentication (R: #24352)
  
  * Plug-in mechanism for authentication modules
  
  * AuthModule interface implementing authentication modules can now be
  instantiated using default (parameter-less) constructor
  
  * Authentication modules can now retain limited state information (the state is
  retained within the lifetime of the method director)
  
  * Authentication scheme selection routine can be easily parameterized
  
  * Yet another massive refactoring of HttpMethodDirector
  
  Contributed by Oleg Kalnichevski
  Reviewed By Michael Becke
  
  Revision  Changes    Path
  1.192     +6 -4      jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/HttpMethodBase.java
  
  Index: HttpMethodBase.java
  ===================================================================
  RCS file: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/HttpMethodBase.java,v
  retrieving revision 1.191
  retrieving revision 1.192
  diff -u -r1.191 -r1.192
  --- HttpMethodBase.java	10 Dec 2003 21:04:13 -0000	1.191
  +++ HttpMethodBase.java	10 Dec 2003 21:37:41 -0000	1.192
  @@ -2061,6 +2061,8 @@
       }
   
       /**
  +     * @deprecated no longer used
  +     * 
        * Returns proxy authentication realm, if it has been used during authentication process. 
        * Otherwise returns <tt>null</tt>.
        * 
  
  
  
  1.1                  jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/auth/AuthPolicy.java
  
  Index: AuthPolicy.java
  ===================================================================
  /*
   * $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/auth/AuthPolicy.java,v 1.1 2003/12/10 21:37:42 olegk Exp $
   * $Revision: 1.1 $
   * $Date: 2003/12/10 21:37:42 $
   *
   * ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2002-2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Commons", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * [Additional notices, if required by prior licensing conditions]
   *
   */
  
  package org.apache.commons.httpclient.auth;
  
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  /**
   * Authentication policy class. The Authentication policy provides corresponding
   * authentication scheme interfrace for a given type of authorization challenge. 
   * <p>The following specifications are provided:
   *  <ul>
   *   <li><tt>Basic</tt>: Basic authentication scheme as defined in RFC2617
   *           (considered inherently insecure, but most widely supported)
   *   <li><tt>Digest</tt>: Digest authentication scheme as defined in RFC2617
   *   <li><tt>NTLM</tt>: The NTLM scheme is a proprietary Microsoft Windows 
   *           Authentication protocol (considered to be the most secure among
   *           currently supported authentication schemes)
   *  </ul>
   * 
   * @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a>
   *
   * @version $Revision: 1.1 $
   * @since 2.1
   */
  public abstract class AuthPolicy {
  
      private static Map SCHEMES = Collections.synchronizedMap(new HashMap());
      
      /**
       * The NTLM scheme is a proprietary Microsoft Windows Authentication 
       * protocol (considered to be the most secure among currently supported 
       * authentication schemes).
       */
      public static final String NTLM = "NTLM";
      
      /** 
       * Digest authentication scheme as defined in RFC2617.
       */
      public static final String DIGEST = "Digest";
  
      /** 
       * Basic authentication scheme as defined in RFC2617 (considered inherently
       * insecure, but most widely supported)
       */
      public static final String BASIC = "Basic";
      
      static {
          AuthPolicy.registerAuthScheme(BASIC, BasicScheme.class);
          AuthPolicy.registerAuthScheme(DIGEST, DigestScheme.class);
          AuthPolicy.registerAuthScheme(NTLM, NTLMScheme.class);
      }
      
      /** Log object. */
      protected static final Log LOG = LogFactory.getLog(AuthPolicy.class);
  
      /**
       * Registers a class implementing an {@link AuthScheme authentication scheme} with 
       * the given identifier. If a class with the given ID already exists it will be overridden.  
       * This ID is the same one used to retrieve the {@link AuthScheme authentication scheme} 
       * from {@link #getAuthScheme(String)}.
       * 
       * @param id the identifier for this scheme
       * @param clazz the class to register
       * 
       * @see #getAuthScheme(String)
       */
      public static void registerAuthScheme(final String id, Class clazz) {
           if (id == null) {
               throw new IllegalArgumentException("Id may not be null");
           }
          if (clazz == null) {
              throw new IllegalArgumentException("Authentication scheme class may not be null");
          }
          SCHEMES.put(id.toLowerCase(), clazz);
      }
  
      /**
       * Unregisters the class implementing an {@link AuthScheme authentication scheme} with 
       * the given ID.
       * 
       * @param id the ID of the class to unregister
       */
      public static void unregisterAuthScheme(final String id) {
           if (id == null) {
               throw new IllegalArgumentException("Id may not be null");
           }
          SCHEMES.remove(id.toLowerCase());
      }
  
      /**
       * Gets the {@link AuthScheme authentication scheme} with the given ID.
       * 
       * @param id the {@link AuthScheme authentication scheme} ID
       * 
       * @return {@link AuthScheme authentication scheme}
       * 
       * @throws IllegalStateException if a scheme with the ID cannot be found
       */
      public static AuthScheme getAuthScheme(final String id) 
          throws IllegalStateException {
  
          if (id == null) {
              throw new IllegalArgumentException("Id may not be null");
          }
          Class clazz = (Class)SCHEMES.get(id.toLowerCase());
          if (clazz != null) {
              try {
                  return (AuthScheme)clazz.newInstance();
              } catch (Exception e) {
                  LOG.error("Error initializing authentication scheme: " + id, e);
                  throw new IllegalStateException(id + 
                      " authentication scheme implemented by " +
                      clazz.getName() + " could not be initialized");
              }
          } else {
              throw new IllegalStateException("Unsupported authentication scheme " + id);
          }
      } 
  }
  
  
  

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