AccountExtUtil.java

/*
 ** Module   : AccountExtUtil.java
 ** Abstract : Wrapper class for account ext methods (moved from SecurityManager).
 **
 ** Copyright (c) 2023, Golden Code Development Corporation.
 **
 ** -#- -I- --Date-- ------------------------------------Description-------------------------------------------
 ** 001 GBB  20230825 Initial version.
 */
/*
 ** 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.directory.*;

/**
 * Wrapper class for account ext methods.
 * <p>
 * Using it through {@link SecurityManager#accountExt} allows resetting SecurityManager instance.
 */
public class AccountExtUtil
{
   /** SecurityManager instance. */
   private final SecurityManager sm;

   /**
    * Package-private constructor.
    * 
    * @param sm
    *        SecurityManager instance
    */
   AccountExtUtil(SecurityManager sm)
   {
      this.sm = sm;
   }
   
   /**
    * Gets the named piece of account extension data of type int for the
    * current user account.
    *
    * @param extName
    *        account extension name
    *
    * @return extension value wrapped into <code>Integer</code> or
    *         <code>null</code> if no such extension exists.
    */
   public Integer getExtInteger(String extName)
   {
      return getExtInteger(extName, sm.getUserId());
   }

   /**
    * Gets the named piece of account extension data of type boolean for the
    * current user account.
    *
    * @param extName
    *        account extension name
    *
    * @return extension value wrapped into <code>Boolean</code> or
    *         <code>null</code> if no such extension exists.
    */
   public Boolean getExtBoolean(String extName)
   {
      return getExtBoolean(extName, sm.getUserId());
   }

   /**
    * Gets the named piece of account extension data of type String for the
    * current user account.
    *
    * @param extName
    *        account extension name
    *
    * @return extension value or
    *         <code>null</code> if no such extension exists.
    */
   public String getExtString(String extName)
   {
      return getExtString(extName, sm.getUserId());
   }

   /**
    * Gets the named piece of account extension data of type String for the
    * current user account.
    *
    * @param extName
    *        account extension name
    *
    * @return extension value or
    *         <code>null</code> if no such extension exists.
    */
   public DateValue getExtDate(String extName)
   {
      return getExtDate(extName, sm.getUserId());
   }

   /**
    * Gets the named piece of account extension data of type byte[] for the
    * current user account.
    *
    * @param extName
    *        account extension name
    *
    * @return extension value or
    *         <code>null</code> if no such extension exists.
    */
   public byte[] getExtBytes(String extName)
   {
      return getExtBytes(extName, sm.getUserId());
   }

   /**
    * Gets the named piece of account extension data of type int for the
    * specified account.
    *
    * @param extName
    *        account extension name
    * @param subjectId
    *        subject ID
    *
    * @return extension value wrapped into <code>Integer</code> or
    *         <code>null</code> if no such extension exists.
    */
   public Integer getExtInteger(String extName, String subjectId)
   {
      // check the access rights
      if (sm.getUserId().compareToIgnoreCase(subjectId) != 0)
      {
         SystemResource sr = (SystemResource) sm.getPluginInstance("system");
         boolean decision = sr.checkExtensionsAccess();
         if (!decision)
            return null;
      }

      String path = locateExtensionPath(subjectId);
      if (path == null)
         return null;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return null;
      if (!ds.bind())
         return null;

      // get the target directory object's "value" attribute of type Integer
      Integer value = ds.getNodeInteger(path + "/" + extName, "value");

      // deactivate directory services
      ds.unbind();

      return value;
   }

   /**
    * Gets the named piece of account extension data of type boolean for the
    * specified account.
    *
    * @param extName
    *        account extension name
    * @param subjectId
    *        subject ID
    *
    * @return extension value wrapped into <code>Boolean</code> or
    *         <code>null</code> if no such extension exists.
    */
   public Boolean getExtBoolean(String extName, String subjectId)
   {
      // check the access rights
      if (sm.getUserId().compareToIgnoreCase(subjectId) != 0)
      {
         SystemResource sr = (SystemResource) sm.getPluginInstance("system");
         boolean decision = sr.checkExtensionsAccess();
         if (!decision)
            return null;
      }

      String path = locateExtensionPath(subjectId);
      if (path == null)
         return null;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return null;
      if (!ds.bind())
         return null;

      // get the target directory object's "value" attribute of type Integer
      Boolean value = ds.getNodeBoolean(path + "/" + extName, "value");

      // deactivate directory services
      ds.unbind();

      return value;
   }

   /**
    * Gets the named piece of account extension data of type String for the
    * specified account.
    *
    * @param extName
    *        account extension name
    * @param subjectId
    *        subject ID
    *
    * @return extension value or
    *         <code>null</code> if no such extension exists.
    */
   public String getExtString(String extName, String subjectId)
   {
      // check the access rights
      if (sm.getUserId().compareToIgnoreCase(subjectId) != 0)
      {
         SystemResource sr = (SystemResource) sm.getPluginInstance("system");
         boolean decision = sr.checkExtensionsAccess();
         if (!decision)
            return null;
      }

      String path = locateExtensionPath(subjectId);
      if (path == null)
         return null;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return null;
      if (!ds.bind())
         return null;

      // get the target directory object's "value" attribute of type Integer
      String value = ds.getNodeString(path + "/" + extName, "value");

      // deactivate directory services
      ds.unbind();

      return value;
   }

   /**
    * Gets the named piece of account extension data of type date for the
    * specified account.
    *
    * @param extName
    *        account extension name
    * @param subjectId
    *        subject ID
    *
    * @return extension value or
    *         <code>null</code> if no such extension exists.
    */
   public DateValue getExtDate(String extName, String subjectId)
   {
      // check the access rights
      if (sm.getUserId().compareToIgnoreCase(subjectId) != 0)
      {
         SystemResource sr = (SystemResource) sm.getPluginInstance("system");
         boolean decision = sr.checkExtensionsAccess();
         if (!decision)
            return null;
      }

      String path = locateExtensionPath(subjectId);
      if (path == null)
         return null;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return null;
      if (!ds.bind())
         return null;

      // get the target directory object's "value" attribute of type Integer
      DateValue value = ds.getNodeDate(path + "/" + extName, "value");

      // deactivate directory services
      ds.unbind();

      return value;
   }

   /**
    * Gets the named piece of account extension data of type byte[] for the
    * specified account.
    *
    * @param extName
    *        account extension name
    * @param subjectId
    *        subject ID
    *
    * @return extension value or
    *         <code>null</code> if no such extension exists.
    */
   public byte[] getExtBytes(String extName, String subjectId)
   {
      // check the access rights
      if (sm.getUserId().compareToIgnoreCase(subjectId) != 0)
      {
         SystemResource sr = (SystemResource) sm.getPluginInstance("system");
         boolean decision = sr.checkExtensionsAccess();
         if (!decision)
            return null;
      }

      String path = locateExtensionPath(subjectId);
      if (path == null)
         return null;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return null;
      if (!ds.bind())
         return null;

      // get the target directory object's "value" attribute of type Integer
      byte[] value = ds.getNodeByteArray(path + "/" + extName, "value");

      // deactivate directory services
      ds.unbind();

      return value;
   }

   /**
    * Sets the named piece of account extension data of type int for the
    * current user account.
    *
    * @param extName
    *        account extension name
    * @param value
    *        new value for the account extension
    *
    * @return <code>true</code> if successfully set the value
    */
   public boolean setExtInteger(String extName, int value)
   {
      return setExtInteger(extName, sm.getUserId(), value);
   }

   /**
    * Sets the named piece of account extension data of type boolean for the
    * current user account.
    *
    * @param extName
    *        account extension name
    * @param value
    *        new value for the account extension
    *
    * @return <code>true</code> if successfully set the value
    */
   public boolean setExtBoolean(String extName, boolean value)
   {
      return setExtBoolean(extName, sm.getUserId(), value);
   }

   /**
    * Sets the named piece of account extension data of type String for the
    * current user account.
    *
    * @param extName
    *        account extension name
    * @param value
    *        new value for the account extension
    *
    * @return <code>true</code> if successfully set the value
    */
   public boolean setExtString(String extName, String value)
   {
      return setExtString(extName, sm.getUserId(), value);
   }

   /**
    * Sets the named piece of account extension data of type byte[] for the
    * current user account.
    *
    * @param extName
    *        account extension name
    * @param value
    *        new value for the account extension
    *
    * @return <code>true</code> if successfully set the value
    */
   public boolean setExtBytes(String extName, byte[] value)
   {
      return setExtBytes(extName, sm.getUserId(), value);
   }

   /**
    * Sets the named piece of account extension data of type int for the
    * specified account.
    *
    * @param extName
    *        account extension name
    * @param subjectId
    *        subject ID
    * @param value
    *        new value for the account extension
    *
    * @return <code>true</code> if successfully set the value
    */
   public boolean setExtInteger(String extName, String subjectId, int value)
   {
      // check the access rights
      if (sm.getUserId().compareToIgnoreCase(subjectId) != 0)
      {
         SystemResource sr = (SystemResource) sm.getPluginInstance("system");
         boolean decision = sr.checkExtensionsAccess();
         if (!decision)
            return false;
      }

      String path = locateExtensionPath(subjectId);
      if (path == null)
         return false;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return false;
      if (!ds.bind())
         return false;

      // open an editing batch
      if (!ds.openBatch(path))
      {
         ds.unbind();
         return false;
      }

      // set the target directory object's "value" attribute of type Integer
      boolean rc = ds.setNodeInteger(path + "/" + extName, "value", value);

      // close the batch
      boolean brc = ds.closeBatch(rc);

      // deactivate directory services
      ds.unbind();

      if (!brc)
         return false;

      return rc;
   }

   /**
    * Sets the named piece of account extension data of type boolean for the
    * specified account.
    *
    * @param extName
    *        account extension name
    * @param subjectId
    *        subject ID
    * @param value
    *        new value for the account extension
    *
    * @return <code>true</code> if successfully set the value
    */
   public boolean setExtBoolean(String extName, String subjectId, boolean value)
   {
      // check the access rights
      if (sm.getUserId().compareToIgnoreCase(subjectId) != 0)
      {
         SystemResource sr = (SystemResource) sm.getPluginInstance("system");
         boolean decision = sr.checkExtensionsAccess();
         if (!decision)
            return false;
      }

      String path = locateExtensionPath(subjectId);
      if (path == null)
         return false;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return false;
      if (!ds.bind())
         return false;

      // open an editing batch
      if (!ds.openBatch(path))
      {
         ds.unbind();
         return false;
      }

      // set the target directory object's "value" attribute of type Integer
      boolean rc = ds.setNodeBoolean(path + "/" + extName, "value", value);

      // close the batch
      if (!ds.closeBatch(true))
      {
         ds.unbind();
         return false;
      }

      // deactivate directory services
      ds.unbind();

      return rc;
   }

   /**
    * Sets the named piece of account extension data of type String for the
    * specified account.
    *
    * @param extName
    *        account extension name
    * @param subjectId
    *        subject ID
    * @param value
    *        new value for the account extension
    *
    * @return <code>true</code> if successfully set the value
    */
   public boolean setExtString(String extName, String subjectId, String value)
   {
      // check the access rights
      if (sm.getUserId().compareToIgnoreCase(subjectId) != 0)
      {
         SystemResource sr = (SystemResource) sm.getPluginInstance("system");
         boolean decision = sr.checkExtensionsAccess();
         if (!decision)
            return false;
      }

      String path = locateExtensionPath(subjectId);
      if (path == null)
         return false;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return false;
      if (!ds.bind())
         return false;

      // open an editing batch
      if (!ds.openBatch(path))
      {
         ds.unbind();
         return false;
      }

      // set the target directory object's "value" attribute of type Integer
      boolean rc = ds.setNodeString(path + "/" + extName, "value", value);

      // close the batch
      if (!ds.closeBatch(true))
      {
         ds.unbind();
         return false;
      }

      // deactivate directory services
      ds.unbind();

      return rc;
   }

   /**
    * Sets the named piece of account extension data of type byte[] for the
    * specified account.
    *
    * @param extName
    *        account extension name
    * @param subjectId
    *        subject ID
    * @param value
    *        new value for the account extension
    *
    * @return <code>true</code> if successfully set the value
    */
   public boolean setExtBytes(String extName, String subjectId, byte[] value)
   {
      // check the access rights
      if (sm.getUserId().compareToIgnoreCase(subjectId) != 0)
      {
         SystemResource sr = (SystemResource) sm.getPluginInstance("system");
         boolean decision = sr.checkExtensionsAccess();
         if (!decision)
            return false;
      }

      String path = locateExtensionPath(subjectId);
      if (path == null)
         return false;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return false;
      if (!ds.bind())
         return false;

      // open an editing batch
      if (!ds.openBatch(path))
      {
         ds.unbind();
         return false;
      }

      // set the target directory object's "value" attribute of type Integer
      boolean rc = ds.setNodeByteArray(path + "/" + extName, "value", value);

      // close the batch
      if (!ds.closeBatch(true))
      {
         ds.unbind();
         return false;
      }

      // deactivate directory services
      ds.unbind();

      return rc;
   }
   
   /**
    * Gets the user ID of a user having a matching value in a specified 
    * named account extension of integer type.
    *
    * @param extName
    *        account extension name
    *
    * @param extValue
    *        extension value 
    *
    * @return user ID or <code>null</code> if no such extension exists.
    */
   public String getIdByExtInteger(String extName, int extValue)
   {
      // check the access rights
      SystemResource sr = (SystemResource) sm.getPluginInstance("system");
      boolean decision = sr.checkExtensionsAccess();
      if (!decision)
         return null;

      // get all user account IDs
      String[] uid = sm.getAllUsers();

      String retValue = null;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return null;
      if (!ds.bind())
         return null;

      // try each user ID
      String path = null;
      Integer value = null;

      for (int i = 0; i < uid.length; i++)
      {
         path = locateExtensionPath(uid[i]);
         if (path == null)
            continue;

         // get the directory object's "value" attribute of type Integer
         value = ds.getNodeInteger(path + "/" + extName, "value");
         if (value == null)
         {
            continue;
         }

         if (value == extValue)
         {
            retValue = uid[i];
            break;
         }
      }

      // deactivate directory services
      ds.unbind();

      return retValue;
   }

   /**
    * Gets the user ID of a user having a matching value in a specified 
    * named account extension of string type.
    *
    * @param extName
    *        account extension name
    *
    * @param extValue
    *        extension value 
    *
    * @param cs
    *        case sensitivity for comparison. <code>true</code> means 
    *        case-sensitive comparison. 
    *
    * @return user ID or <code>null</code> if no such extension exists.
    */
   public String getIdByExtString(String extName, String extValue, boolean cs)
   {
      // check the access rights
      SystemResource sr = (SystemResource) sm.getPluginInstance("system");
      boolean decision = sr.checkExtensionsAccess();
      if (!decision)
         return null;

      // get all user account IDs
      String[] uid = sm.getAllUsers();

      String retValue = null;

      // activate directory services
      DirectoryService ds = DirectoryService.getInstance();
      if (ds == null)
         return null;
      if (!ds.bind())
         return null;

      // try each user ID
      String path = null;
      String value = null;
      boolean comp = false;

      for (int i = 0; i < uid.length; i++)
      {
         path = locateExtensionPath(uid[i]);
         if (path == null)
            continue;

         // get the target directory object's "value" attribute of type Integer
         value = ds.getNodeString(path + "/" + extName, "value");
         if (value == null)
         {
            continue;
         }

         // compare extension value accounting for requested case sensitivity
         if (cs)
            comp = value.equals(extValue);
         else
            comp = value.compareToIgnoreCase(extValue) == 0;

         if (comp)
         {
            retValue = uid[i];
            break;
         }
      }

      // deactivate directory services
      ds.unbind();

      return retValue;
   }
   
   /**
    * Locates the account extension directory path for the specified user ID.
    *
    * @param  uid
    *         user ID
    *
    * @return directory path to the account extensions
    */
   private String locateExtensionPath(String uid)
   {
      // Pick up the generation of security cache
      SecurityContextStack ctxs = SecurityContextStack.getContext();
      SecurityContext ctx = ctxs.getEffectiveContext();
      SecurityCache sc = ctx.getCache();

      // find the account
      Account acc = sc.getAccountById(uid);
      if (acc == null)
         return null;

      // figure out account type and extension path
      switch (acc.getAccountType())
      {
         case Account.ACC_USER:
            return "/security/accounts/users/" + uid;
         case Account.ACC_GROUP:
            return null;
         case Account.ACC_PROCESS:
            return "/security/accounts/processes/" + uid;
      }

      return null;
   }
}