SampleSsoAuthenticator.java

/*
 ** Module   : SampleSsoAuthenticator.java
 ** Abstract : Example implementation for standard SSO authentication hook interface.
 **
 ** Copyright (c) 2023, Golden Code Development Corporation.
 **
 ** -#- -I- --Date-- ---------------------------------Description---------------------------------
 ** 001 GBB 20230704 Created initial version
 ** 002 GBB 20231027 Prefix for storageId for authenticated users in the dummy implementation.
 ** 003 GBB 20231121 Session description added to successful auth result.
 */
/*
 ** This program is free software: you can redistribute it and/or modify
 ** it under the terms of the GNU Affero General Public License as
 ** published by the Free Software Foundation, either version 3 of the
 ** License, or (at your option) any later version.
 **
 ** This program is distributed in the hope that it will be useful,
 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ** GNU Affero General Public License for more details.
 **
 ** You may find a copy of the GNU Affero GPL version 3 at the following
 ** location: https://www.gnu.org/licenses/agpl-3.0.en.html
 **
 ** Additional terms under GNU Affero GPL version 3 section 7:
 **
 **   Under Section 7 of the GNU Affero GPL version 3, the following additional
 **   terms apply to the works covered under the License.  These additional terms
 **   are non-permissive additional terms allowed under Section 7 of the GNU
 **   Affero GPL version 3 and may not be removed by you.
 **
 **   0. Attribution Requirement.
 **
 **     You must preserve all legal notices or author attributions in the covered
 **     work or Appropriate Legal Notices displayed by works containing the covered
 **     work.  You may not remove from the covered work any author or developer
 **     credit already included within the covered work.
 **
 **   1. No License To Use Trademarks.
 **
 **     This license does not grant any license or rights to use the trademarks
 **     Golden Code, FWD, any Golden Code or FWD logo, or any other trademarks
 **     of Golden Code Development Corporation. You are not authorized to use the
 **     name Golden Code, FWD, or the names of any author or contributor, for
 **     publicity purposes without written authorization.
 **
 **   2. No Misrepresentation of Affiliation.
 **
 **     You may not represent yourself as Golden Code Development Corporation or FWD.
 **
 **     You may not represent yourself for publicity purposes as associated with
 **     Golden Code Development Corporation, FWD, or any author or contributor to
 **     the covered work, without written authorization.
 **
 **   3. No Misrepresentation of Source or Origin.
 **
 **     You may not represent the covered work as solely your work.  All modified
 **     versions of the covered work must be marked in a reasonable way to make it
 **     clear that the modified work is not originating from Golden Code Development
 **     Corporation or FWD.  All modified versions must contain the notices of
 **     attribution required in this license.
 */

package com.goldencode.p2j.security;

import com.goldencode.p2j.main.*;
import com.goldencode.util.*;

import javax.servlet.http.*;
import java.util.*;

/** Sample implementation of the standard SSO authenticator hook. Uses mostly hard-coded values. */
public class SampleSsoAuthenticator
implements SsoAuthenticator
{
   /** Cookie name used for auto-login. */
   private static final String SAMPLE_COOKIE_NAME = "SampleSsoAuthenticator";
   
   /** Cookie invalid value used to invalidate the cookie. */
   private static final String SAMPLE_COOKIE_INVALID_VALUE = "Invalid";

   /** Path for the auth cookie. */
   private static final String SAMPLE_COOKIE_PATH = "/; HttpOnly;";

   /** Example value for SESSION:AUTH-BLOB. */
   private static final String SAMPLE_AUTH_BLOB = "Bearer dfg978sdftgvsdfvvs879d9u0gvsdf";

   /** The FWD user returned by default for all in-app users. */
   private String defaultFwdUser = "newuser";
   
   /**
    * First attempts aut-login by validating only the cookies. If auth by cookie fails, simulates 
    * successful response by setting the hard-coded values in the result.
    *
    * @param    paramMap
    *           A map of all query / form params.
    * @param    cookies
    *           All cookies coming with the HTTP request for authentication.
    * @param    licensingData
    *           Data that can be used for enforcing licensing policy.
    *
    * @return   A container with all details needed by the FWD framework to spawn a new client.
    */
   @Override
   public Result authenticate(Map<String, String[]> paramMap, Cookie[] cookies, LicensingData licensingData)
   {
      if (cookies != null && cookies.length > 0)
      {
         Result cookieAuthResult = authenticate(cookies, licensingData);
         if (cookieAuthResult != null && cookieAuthResult.isSuccess())
         {
            return cookieAuthResult;
         }
      }

      String appUser = paramMap.get(FWD_SDK_LOGIN_PARAM_USER)[0];
      String appPass = paramMap.get(FWD_SDK_LOGIN_PARAM_PASS)[0];

      // TODO: check credentials against an auth provider
      Cookie cookie = new Cookie(SAMPLE_COOKIE_NAME, appUser);
      cookie.setPath(SAMPLE_COOKIE_PATH);
      cookie.setSecure(true);

      Result result = new Result(true,
                                 defaultFwdUser,
                                 "storage-" + appUser,
                                 SAMPLE_AUTH_BLOB,
                                 cookie);
      result.setSessionDescription("Session for end user " + appUser);
      return result;
   }
   
   /**
    * Invalidates the web session associated with the authentication cookie by communicating with the auth 
    * server or updating the DB and returns a cookie with the same name, but invalid value.
    *
    * @param    cookies
    *           The cookie to be returned to the browser and used in the next auth requests.
    *
    * @return   <code>null</code> if the web session / cookie invalidation failed, otherwise an 
    *           authentication Cookie with invalid value.
    */
   @Override
   public Cookie logout(Cookie[] cookies)
   {
      // TODO: invalidate session in auth provider
      
      Cookie cookie = new Cookie(SAMPLE_COOKIE_NAME, SAMPLE_COOKIE_INVALID_VALUE);
      cookie.setPath(SAMPLE_COOKIE_PATH);
      cookie.setSecure(true);
      return cookie;
   }

   /**
    * Simulates authentication by cookie.
    *
    * @param    cookies
    *           All cookies coming with the HTTP request for authentication.
    * @param    licensingData
    *           Data that can be used for enforcing licensing policy.
    *
    * @return   A container with all details needed by the FWD framework to spawn a new client.
    */
   @Override
   public Result authenticate(Cookie[] cookies, LicensingData licensingData)
   {
      if (cookies == null || cookies.length == 0)
      {
         return null;
      }
      // read the cookie, query the auth provider
      String authCookieValue = Arrays.stream(cookies)
                                     .filter(cookie -> cookie.getName().equals(SAMPLE_COOKIE_NAME))
                                     .findAny()
                                     .map(Cookie::getValue)
                                     .orElse(null);
      
      if (authCookieValue == null || SAMPLE_COOKIE_INVALID_VALUE.equals(authCookieValue))
      {
         return new Result(false, WebDriverHandler.SupportedHttpCode.UNAUTHORIZED, null);
      }

      // TODO: check cookie value against an auth provider and receive the new cookie value
      Cookie cookie = new Cookie(SAMPLE_COOKIE_NAME, authCookieValue);
      cookie.setPath(SAMPLE_COOKIE_PATH);
      cookie.setSecure(true);

      Result result = new Result(true,
                                 defaultFwdUser,
                                 "storage-" + authCookieValue,
                                 SAMPLE_AUTH_BLOB,
                                 cookie);
      result.setSessionDescription("Session for end user " + authCookieValue);
      return result;
   }

   /**
    * Returns the hard-coded cookie name used for authentication.
    *
    * @return   The name of the cookie used for authentication.
    */
   @Override
   public String getAuthCookieName()
   {
      return SAMPLE_COOKIE_NAME;
   }
   
   /**
    * Sets the default FWD user.
    *
    * @param    option
    *           All cookies coming with the HTTP request for authentication.
    */
   @Override
   public void setOption(String option)
   {
      if (StringHelper.hasContent(option))
      {
         this.defaultFwdUser = option;
      }
   }

   /**
    * Returns null. The default template will be used.
    *
    * @param    loadedTemplate
    *           The html template loaded from the standard location in the custom root package or null.
    *
    * @return   <code>null</code>.
    */
   @Override
   public String getLoginPage(String loadedTemplate)
   {
      return null;
   }
}